[PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L

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* [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII
@ 2022-07-12 19:28 Noah Goldstein
  2022-07-12 19:28 ` [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S Noah Goldstein
                   ` (3 more replies)
  0 siblings, 4 replies; 8+ messages in thread
From: Noah Goldstein @ 2022-07-12 19:28 UTC (permalink / raw)
  To: libc-alpha

The previous macro name can be confusing given that both
`__strcasecmp_l_nonascii` and `__strcasecmp_nonascii` are
functions and we use the `_l` version.
---
 sysdeps/x86_64/multiarch/strcmp-avx2.S | 6 +++---
 sysdeps/x86_64/multiarch/strcmp-evex.S | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/sysdeps/x86_64/multiarch/strcmp-avx2.S b/sysdeps/x86_64/multiarch/strcmp-avx2.S
index 516cde1145..3ab21e3a58 100644
--- a/sysdeps/x86_64/multiarch/strcmp-avx2.S
+++ b/sysdeps/x86_64/multiarch/strcmp-avx2.S
@@ -89,12 +89,12 @@
 #   define STRCASECMP	__strncasecmp_avx2
 #   define LOCALE_REG	rcx
 #   define LOCALE_REG_LP	RCX_LP
-#   define STRCASECMP_NONASCII	__strncasecmp_l_nonascii
+#   define STRCASECMP_L_NONASCII	__strncasecmp_l_nonascii
 #  else
 #   define STRCASECMP	__strcasecmp_avx2
 #   define LOCALE_REG	rdx
 #   define LOCALE_REG_LP	RDX_LP
-#   define STRCASECMP_NONASCII	__strcasecmp_l_nonascii
+#   define STRCASECMP_L_NONASCII	__strcasecmp_l_nonascii
 #  endif
 # endif
 
@@ -215,7 +215,7 @@ STRCMP:
 	mov	(%LOCALE_REG), %RAX_LP
 #  endif
 	testl	$1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
-	jne	STRCASECMP_NONASCII
+	jne	STRCASECMP_L_NONASCII
 	leaq	_nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
 # endif
 
diff --git a/sysdeps/x86_64/multiarch/strcmp-evex.S b/sysdeps/x86_64/multiarch/strcmp-evex.S
index e97d51bb26..afbf13a230 100644
--- a/sysdeps/x86_64/multiarch/strcmp-evex.S
+++ b/sysdeps/x86_64/multiarch/strcmp-evex.S
@@ -123,12 +123,12 @@
 #   define STRCASECMP	__strncasecmp_evex
 #   define LOCALE_REG	rcx
 #   define LOCALE_REG_LP	RCX_LP
-#   define STRCASECMP_NONASCII	__strncasecmp_l_nonascii
+#   define STRCASECMP_L_NONASCII	__strncasecmp_l_nonascii
 #  else
 #   define STRCASECMP	__strcasecmp_evex
 #   define LOCALE_REG	rdx
 #   define LOCALE_REG_LP	RDX_LP
-#   define STRCASECMP_NONASCII	__strcasecmp_l_nonascii
+#   define STRCASECMP_L_NONASCII	__strcasecmp_l_nonascii
 #  endif
 # endif
 
@@ -241,7 +241,7 @@ STRCMP:
 	mov	(%LOCALE_REG), %RAX_LP
 #  endif
 	testl	$1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
-	jne	STRCASECMP_NONASCII
+	jne	STRCASECMP_L_NONASCII
 	leaq	_nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
 # endif
 
-- 
2.34.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S
  2022-07-12 19:28 [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII Noah Goldstein
@ 2022-07-12 19:28 ` Noah Goldstein
  2022-07-12 23:57   ` H.J. Lu
  2022-07-12 19:28 ` [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S Noah Goldstein
                   ` (2 subsequent siblings)
  3 siblings, 1 reply; 8+ messages in thread
From: Noah Goldstein @ 2022-07-12 19:28 UTC (permalink / raw)
  To: libc-alpha

This commit doesn't affect libc.so.6, its just housekeeping to prepare
for adding explicit ISA level support.

Because strcmp-sse2.S implements so many functions (more from
avx2/evex/sse42) add a new file 'strcmp-naming.h' to assist in
getting the correct symbol name for all the function across
multiarch/non-multiarch builds.

Tested build on x86_64 and x86_32 with/without multiarch.
---
 sysdeps/x86_64/multiarch/rtld-strcmp.S       |   18 +
 sysdeps/x86_64/multiarch/rtld-strncmp.S      |   18 +
 sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S |    5 +-
 sysdeps/x86_64/multiarch/strcmp-naming.h     |   68 +
 sysdeps/x86_64/multiarch/strcmp-sse2.S       | 2140 ++++++++++++++++-
 sysdeps/x86_64/multiarch/strncase_l-sse2.S   |    5 +-
 sysdeps/x86_64/multiarch/strncmp-sse2.S      |   12 +-
 sysdeps/x86_64/strcasecmp_l.S                |   11 +-
 sysdeps/x86_64/strcmp.S                      | 2147 +-----------------
 sysdeps/x86_64/strncase_l.S                  |   11 +-
 sysdeps/x86_64/strncmp.S                     |    7 +-
 11 files changed, 2264 insertions(+), 2178 deletions(-)
 create mode 100644 sysdeps/x86_64/multiarch/rtld-strcmp.S
 create mode 100644 sysdeps/x86_64/multiarch/rtld-strncmp.S
 create mode 100644 sysdeps/x86_64/multiarch/strcmp-naming.h

diff --git a/sysdeps/x86_64/multiarch/rtld-strcmp.S b/sysdeps/x86_64/multiarch/rtld-strcmp.S
new file mode 100644
index 0000000000..207078bdcc
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/rtld-strcmp.S
@@ -0,0 +1,18 @@
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include "../strcmp.S"
diff --git a/sysdeps/x86_64/multiarch/rtld-strncmp.S b/sysdeps/x86_64/multiarch/rtld-strncmp.S
new file mode 100644
index 0000000000..ac32150406
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/rtld-strncmp.S
@@ -0,0 +1,18 @@
+/* Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include "../strncmp.S"
diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S b/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
index 2360d104dd..a2b5741399 100644
--- a/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
+++ b/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
@@ -16,8 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#define STRCMP __strcasecmp_l_sse2
 #define USE_AS_STRCASECMP_L
-#define NO_NOLOCALE_ALIAS
-#define __strcasecmp __strcasecmp_sse2
-#include <sysdeps/x86_64/strcmp.S>
+#include "strcmp-sse2.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp-naming.h b/sysdeps/x86_64/multiarch/strcmp-naming.h
new file mode 100644
index 0000000000..6a7529b6a4
--- /dev/null
+++ b/sysdeps/x86_64/multiarch/strcmp-naming.h
@@ -0,0 +1,68 @@
+#ifndef _STRCMP_NAMING_H_
+#define _STRCMP_NAMING_H_
+
+/* Utility macros.  */
+#define STRCMP_SUFFIX(x, y) x##y
+#define STRCMP_NAME(x, y) STRCMP_SUFFIX (x, y)
+
+/* Setup base of all definitions.  */
+#define STRNCASECMP_BASE __strncasecmp
+#define STRCASECMP_BASE __strcasecmp
+#define WCSCMP_BASE __wcscmp
+
+#if defined USE_MULTIARCH && IS_IN (libc)
+# define WCSNCMP_BASE __wcsncmp
+# define STRNCMP_BASE __strncmp
+# define STRCMP_BASE __strcmp
+
+#else
+/* Covers IS_IN (rtld) or non-multiarch build.  */
+# define WCSNCMP_BASE wcsncmp
+# define STRNCMP_BASE strncmp
+# define STRCMP_BASE strcmp
+
+# undef STRCMP_ISA
+# define STRCMP_ISA
+#endif
+
+#if IS_IN (rtld) || defined USE_MULTIARCH
+# define ISA_HIDDEN_JUMPTARGET(...) __VA_ARGS__
+#else
+# define ISA_HIDDEN_JUMPTARGET(...) HIDDEN_JUMPTARGET (__VA_ARGS__)
+#endif
+
+/* Get correct symbol for OVERFLOW_STRCMP, STRCMP, and
+   STRCASECMP.  */
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+
+# if defined USE_AS_WCSCMP || defined USE_AS_WCSNCMP
+#  define OVERFLOW_STRCMP_SYM WCSCMP_BASE
+#  define STRCMP_SYM WCSNCMP_BASE
+# elif defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+#  define OVERFLOW_STRCMP_SYM STRCMP_NAME (STRCASECMP_BASE, _l)
+#  define STRCMP_SYM STRCMP_NAME (STRNCASECMP_BASE, _l)
+# else
+#  define OVERFLOW_STRCMP_SYM STRCMP_BASE
+#  define STRCMP_SYM STRNCMP_BASE
+# endif
+
+# define STRCASECMP_SYM STRNCASECMP_BASE
+# define OVERFLOW_STRCMP \
+    ISA_HIDDEN_JUMPTARGET (STRCMP_NAME (OVERFLOW_STRCMP_SYM, STRCMP_ISA))
+#else
+# ifdef USE_AS_WCSCMP
+#  define STRCMP_SYM WCSCMP_BASE
+# elif defined USE_AS_STRCASECMP_L
+#  define STRCMP_SYM STRCMP_NAME (STRCASECMP_BASE, _l)
+# else
+#  define STRCMP_SYM STRCMP_BASE
+# endif
+
+# define STRCASECMP_SYM STRCASECMP_BASE
+#endif
+
+#define STRCASECMP_L_NONASCII STRCMP_NAME (STRCASECMP_SYM, _l_nonascii)
+#define STRCASECMP STRCMP_NAME (STRCASECMP_SYM, STRCMP_ISA)
+#define STRCMP STRCMP_NAME (STRCMP_SYM, STRCMP_ISA)
+
+#endif
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2.S b/sysdeps/x86_64/multiarch/strcmp-sse2.S
index b8f95e59cf..b1220231ab 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse2.S
@@ -16,13 +16,2141 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#if IS_IN (libc)
+#if IS_IN (libc) || IS_IN (rtld)
+
+# define STRCMP_ISA	_sse2
+# include "strcmp-naming.h"
+
 # include <sysdep.h>
 
-# define STRCMP __strcmp_sse2
+# undef UPDATE_STRNCMP_COUNTER
 
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(strcmp)
-#endif
+# ifndef LABEL
+#  define LABEL(l) L(l)
+# endif
+
+# ifdef USE_AS_STRNCMP
+/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
+   if the new counter > the old one or is 0.  */
+#  define UPDATE_STRNCMP_COUNTER				\
+	/* calculate left number to compare */		\
+	lea	-16(%rcx, %r11), %r9;			\
+	cmp	%r9, %r11;				\
+	jb	LABEL(strcmp_exitz);			\
+	test	%r9, %r9;				\
+	je	LABEL(strcmp_exitz);			\
+	mov	%r9, %r11
+
+# elif defined USE_AS_STRCASECMP_L
+#  include "locale-defines.h"
+
+#  define UPDATE_STRNCMP_COUNTER
+# elif defined USE_AS_STRNCASECMP_L
+#  include "locale-defines.h"
+
+#  define UPDATE_STRNCMP_COUNTER				\
+	/* calculate left number to compare */		\
+	lea	-16(%rcx, %r11), %r9;			\
+	cmp	%r9, %r11;				\
+	jb	LABEL(strcmp_exitz);			\
+	test	%r9, %r9;				\
+	je	LABEL(strcmp_exitz);			\
+	mov	%r9, %r11
+# else
+#  define UPDATE_STRNCMP_COUNTER
+# endif
+
+	.text
+# ifdef USE_AS_STRCASECMP_L
+#  ifndef ENTRY2
+#   define ENTRY2(name) ENTRY (name)
+#   define END2(name) END (name)
+#  endif
+
+ENTRY2 (STRCASECMP)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RDX_LP
+
+	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
+	.p2align 4
+END2 (STRCASECMP)
+	/* FALLTHROUGH to strcasecmp_l.  */
+# elif defined USE_AS_STRNCASECMP_L
+#  ifndef ENTRY2
+#   define ENTRY2(name) ENTRY (name)
+#   define END2(name) END (name)
+#  endif
+
+ENTRY2 (STRCASECMP)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RCX_LP
+
+	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
+	.p2align 4
+END2 (STRCASECMP)
+	/* FALLTHROUGH to strncasecmp_l.  */
+# endif
+
+ENTRY (STRCMP)
+# ifdef USE_AS_STRCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
+#  else
+	mov	(%rdx), %RAX_LP
+#  endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strcasecmp_l_nonascii
+# elif defined USE_AS_STRNCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
+#  else
+	mov	(%rcx), %RAX_LP
+#  endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strncasecmp_l_nonascii
+# endif
+
+/*
+ * This implementation uses SSE to compare up to 16 bytes at a time.
+ */
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	test	%RDX_LP, %RDX_LP
+	je	LABEL(strcmp_exitz)
+	cmp	$1, %RDX_LP
+	je	LABEL(Byte0)
+	mov	%RDX_LP, %R11_LP
+# endif
+	mov	%esi, %ecx
+	mov	%edi, %eax
+/* Use 64bit AND here to avoid long NOP padding.  */
+	and	$0x3f, %rcx		/* rsi alignment in cache line */
+	and	$0x3f, %rax		/* rdi alignment in cache line */
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	.section .rodata.cst16,"aM",@progbits,16
+	.align 16
+.Llcase_min:
+	.quad	0x3f3f3f3f3f3f3f3f
+	.quad	0x3f3f3f3f3f3f3f3f
+.Llcase_max:
+	.quad	0x9999999999999999
+	.quad	0x9999999999999999
+.Lcase_add:
+	.quad	0x2020202020202020
+	.quad	0x2020202020202020
+	.previous
+	movdqa	.Llcase_min(%rip), %xmm5
+#  define LCASE_MIN_reg %xmm5
+	movdqa	.Llcase_max(%rip), %xmm6
+#  define LCASE_MAX_reg %xmm6
+	movdqa	.Lcase_add(%rip), %xmm7
+#  define CASE_ADD_reg %xmm7
+# endif
+	cmp	$0x30, %ecx
+	ja	LABEL(crosscache)	/* rsi: 16-byte load will cross cache line */
+	cmp	$0x30, %eax
+	ja	LABEL(crosscache)	/* rdi: 16-byte load will cross cache line */
+	movlpd	(%rdi), %xmm1
+	movlpd	(%rsi), %xmm2
+	movhpd	8(%rdi), %xmm1
+	movhpd	8(%rsi), %xmm2
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+#   define TOLOWER(reg1, reg2) \
+	movdqa	LCASE_MIN_reg, %xmm8;					\
+	movdqa	LCASE_MIN_reg, %xmm9;					\
+	paddb	reg1, %xmm8;					\
+	paddb	reg2, %xmm9;					\
+	pcmpgtb	LCASE_MAX_reg, %xmm8;				\
+	pcmpgtb	LCASE_MAX_reg, %xmm9;				\
+	pandn	CASE_ADD_reg, %xmm8;					\
+	pandn	CASE_ADD_reg, %xmm9;					\
+	paddb	%xmm8, reg1;					\
+	paddb	%xmm9, reg2
+	TOLOWER	(%xmm1, %xmm2)
+# else
+#  define TOLOWER(reg1, reg2)
+# endif
+	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
+	jnz	LABEL(less16bytes)	/* If not, find different value or null char */
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)	/* finish comparision */
+# endif
+	add	$16, %rsi		/* prepare to search next 16 bytes */
+	add	$16, %rdi		/* prepare to search next 16 bytes */
+
+	/*
+	 * Determine source and destination string offsets from 16-byte alignment.
+	 * Use relative offset difference between the two to determine which case
+	 * below to use.
+	 */
+	.p2align 4
+LABEL(crosscache):
+	and	$0xfffffffffffffff0, %rsi	/* force %rsi is 16 byte aligned */
+	and	$0xfffffffffffffff0, %rdi	/* force %rdi is 16 byte aligned */
+	mov	$0xffff, %edx			/* for equivalent offset */
+	xor	%r8d, %r8d
+	and	$0xf, %ecx			/* offset of rsi */
+	and	$0xf, %eax			/* offset of rdi */
+	cmp	%eax, %ecx
+	je	LABEL(ashr_0)			/* rsi and rdi relative offset same */
+	ja	LABEL(bigger)
+	mov	%edx, %r8d			/* r8d is offset flag for exit tail */
+	xchg	%ecx, %eax
+	xchg	%rsi, %rdi
+LABEL(bigger):
+	lea	15(%rax), %r9
+	sub	%rcx, %r9
+	lea	LABEL(unaligned_table)(%rip), %r10
+	movslq	(%r10, %r9,4), %r9
+	lea	(%r10, %r9), %r10
+	_CET_NOTRACK jmp *%r10			/* jump to corresponding case */
+
+/*
+ * The following cases will be handled by ashr_0
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
+ *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
+ */
+	.p2align 4
+LABEL(ashr_0):
+
+	movdqa	(%rsi), %xmm1
+	pxor	%xmm0, %xmm0			/* clear %xmm0 for null char check */
+	pcmpeqb	%xmm1, %xmm0			/* Any null chars? */
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpeqb	(%rdi), %xmm1			/* compare 16 bytes for equality */
+# else
+	movdqa	(%rdi), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm2, %xmm1			/* compare 16 bytes for equality */
+# endif
+	psubb	%xmm0, %xmm1			/* packed sub of comparison results*/
+	pmovmskb %xmm1, %r9d
+	shr	%cl, %edx			/* adjust 0xffff for offset */
+	shr	%cl, %r9d			/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	/*
+	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
+	 * the start from (16-rax) and no null char was seen.
+	 */
+	jne	LABEL(less32bytes)		/* mismatch or null char */
+	UPDATE_STRNCMP_COUNTER
+	mov	$16, %rcx
+	mov	$16, %r9
+	pxor	%xmm0, %xmm0			/* clear xmm0, may have changed above */
+
+	/*
+	 * Now both strings are aligned at 16-byte boundary. Loop over strings
+	 * checking 32-bytes per iteration.
+	 */
+	.p2align 4
+LABEL(loop_ashr_0):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)		/* mismatch or null char seen */
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rcx
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rcx
+	jmp	LABEL(loop_ashr_0)
+
+/*
+ * The following cases will be handled by ashr_1
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
+ *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
+ */
+	.p2align 4
+LABEL(ashr_1):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	pslldq	$15, %xmm2		/* shift first string to align with second */
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx		/* adjust 0xffff for offset */
+	shr	%cl, %r9d		/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx		/* index for loads*/
+	mov	$1, %r9d		/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	1(%rdi), %r10
+	and	$0xfff, %r10		/* offset into 4K page */
+	sub	$0x1000, %r10		/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_1):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
+
+LABEL(gobble_ashr_1):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4		 /* store for next cycle */
+
+	psrldq	$1, %xmm3
+	pslldq	$15, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4		/* store for next cycle */
+
+	psrldq	$1, %xmm3
+	pslldq	$15, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_1)
+
+	/*
+	 * Nibble avoids loads across page boundary. This is to avoid a potential
+	 * access into unmapped memory.
+	 */
+	.p2align 4
+LABEL(nibble_ashr_1):
+	pcmpeqb	%xmm3, %xmm0		 /* check nibble for null char*/
+	pmovmskb %xmm0, %edx
+	test	$0xfffe, %edx
+	jnz	LABEL(ashr_1_exittail)	/* find null char*/
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$15, %r11
+	jbe	LABEL(ashr_1_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10		/* substract 4K from %r10 */
+	jmp	LABEL(gobble_ashr_1)
+
+	/*
+	 * Once find null char, determine if there is a string mismatch
+	 * before the null char.
+	 */
+	.p2align 4
+LABEL(ashr_1_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$1, %xmm0
+	psrldq	$1, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_2
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
+ *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
+ */
+	.p2align 4
+LABEL(ashr_2):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$14, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$2, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	2(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_2):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2)
+
+LABEL(gobble_ashr_2):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$2, %xmm3
+	pslldq	$14, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$2, %xmm3
+	pslldq	$14, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_2)
+
+	.p2align 4
+LABEL(nibble_ashr_2):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfffc, %edx
+	jnz	LABEL(ashr_2_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$14, %r11
+	jbe	LABEL(ashr_2_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_2)
+
+	.p2align 4
+LABEL(ashr_2_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$2, %xmm0
+	psrldq	$2, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_3
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
+ */
+	.p2align 4
+LABEL(ashr_3):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$13, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$3, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	3(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_3):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3)
+
+LABEL(gobble_ashr_3):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$3, %xmm3
+	pslldq	$13, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$3, %xmm3
+	pslldq	$13, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_3)
+
+	.p2align 4
+LABEL(nibble_ashr_3):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfff8, %edx
+	jnz	LABEL(ashr_3_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$13, %r11
+	jbe	LABEL(ashr_3_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_3)
+
+	.p2align 4
+LABEL(ashr_3_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$3, %xmm0
+	psrldq	$3, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_4
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
+ */
+	.p2align 4
+LABEL(ashr_4):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$12, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$4, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	4(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_4):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4)
+
+LABEL(gobble_ashr_4):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$4, %xmm3
+	pslldq	$12, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$4, %xmm3
+	pslldq	$12, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_4)
+
+	.p2align 4
+LABEL(nibble_ashr_4):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfff0, %edx
+	jnz	LABEL(ashr_4_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$12, %r11
+	jbe	LABEL(ashr_4_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_4)
+
+	.p2align 4
+LABEL(ashr_4_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$4, %xmm0
+	psrldq	$4, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_5
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
+ */
+	.p2align 4
+LABEL(ashr_5):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$11, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$5, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	5(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_5):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5)
+
+LABEL(gobble_ashr_5):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$5, %xmm3
+	pslldq	$11, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$5, %xmm3
+	pslldq	$11, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_5)
+
+	.p2align 4
+LABEL(nibble_ashr_5):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xffe0, %edx
+	jnz	LABEL(ashr_5_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$11, %r11
+	jbe	LABEL(ashr_5_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_5)
+
+	.p2align 4
+LABEL(ashr_5_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$5, %xmm0
+	psrldq	$5, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_6
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
+ */
+	.p2align 4
+LABEL(ashr_6):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$10, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$6, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	6(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_6):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6)
+
+LABEL(gobble_ashr_6):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$6, %xmm3
+	pslldq	$10, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$6, %xmm3
+	pslldq	$10, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_6)
+
+	.p2align 4
+LABEL(nibble_ashr_6):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xffc0, %edx
+	jnz	LABEL(ashr_6_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$10, %r11
+	jbe	LABEL(ashr_6_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_6)
+
+	.p2align 4
+LABEL(ashr_6_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$6, %xmm0
+	psrldq	$6, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ * The following cases will be handled by ashr_7
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
+ */
+	.p2align 4
+LABEL(ashr_7):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$9, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$7, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	7(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_7):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7)
+
+LABEL(gobble_ashr_7):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$7, %xmm3
+	pslldq	$9, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$7, %xmm3
+	pslldq	$9, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_7)
+
+	.p2align 4
+LABEL(nibble_ashr_7):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xff80, %edx
+	jnz	LABEL(ashr_7_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$9, %r11
+	jbe	LABEL(ashr_7_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_7)
+
+	.p2align 4
+LABEL(ashr_7_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$7, %xmm0
+	psrldq	$7, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_8
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
+ */
+	.p2align 4
+LABEL(ashr_8):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$8, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$8, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	8(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_8):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8)
+
+LABEL(gobble_ashr_8):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$8, %xmm3
+	pslldq	$8, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
 
-#include <sysdeps/x86_64/strcmp.S>
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$8, %xmm3
+	pslldq	$8, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_8)
+
+	.p2align 4
+LABEL(nibble_ashr_8):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xff00, %edx
+	jnz	LABEL(ashr_8_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$8, %r11
+	jbe	LABEL(ashr_8_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_8)
+
+	.p2align 4
+LABEL(ashr_8_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$8, %xmm0
+	psrldq	$8, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_9
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
+ */
+	.p2align 4
+LABEL(ashr_9):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$7, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$9, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	9(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_9):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9)
+
+LABEL(gobble_ashr_9):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$9, %xmm3
+	pslldq	$7, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$9, %xmm3
+	pslldq	$7, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3		/* store for next cycle */
+	jmp	LABEL(loop_ashr_9)
+
+	.p2align 4
+LABEL(nibble_ashr_9):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfe00, %edx
+	jnz	LABEL(ashr_9_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$7, %r11
+	jbe	LABEL(ashr_9_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_9)
+
+	.p2align 4
+LABEL(ashr_9_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$9, %xmm0
+	psrldq	$9, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_10
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
+ */
+	.p2align 4
+LABEL(ashr_10):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$6, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$10, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	10(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_10):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10)
+
+LABEL(gobble_ashr_10):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$10, %xmm3
+	pslldq	$6, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$10, %xmm3
+	pslldq	$6, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_10)
+
+	.p2align 4
+LABEL(nibble_ashr_10):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xfc00, %edx
+	jnz	LABEL(ashr_10_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$6, %r11
+	jbe	LABEL(ashr_10_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_10)
+
+	.p2align 4
+LABEL(ashr_10_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$10, %xmm0
+	psrldq	$10, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_11
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
+ */
+	.p2align 4
+LABEL(ashr_11):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$5, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$11, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	11(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_11):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11)
+
+LABEL(gobble_ashr_11):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$11, %xmm3
+	pslldq	$5, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$11, %xmm3
+	pslldq	$5, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_11)
+
+	.p2align 4
+LABEL(nibble_ashr_11):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xf800, %edx
+	jnz	LABEL(ashr_11_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$5, %r11
+	jbe	LABEL(ashr_11_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_11)
+
+	.p2align 4
+LABEL(ashr_11_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$11, %xmm0
+	psrldq	$11, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_12
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
+ */
+	.p2align 4
+LABEL(ashr_12):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$4, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$12, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	12(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_12):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12)
+
+LABEL(gobble_ashr_12):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$12, %xmm3
+	pslldq	$4, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$12, %xmm3
+	pslldq	$4, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_12)
+
+	.p2align 4
+LABEL(nibble_ashr_12):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xf000, %edx
+	jnz	LABEL(ashr_12_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$4, %r11
+	jbe	LABEL(ashr_12_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_12)
+
+	.p2align 4
+LABEL(ashr_12_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$12, %xmm0
+	psrldq	$12, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_13
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
+ */
+	.p2align 4
+LABEL(ashr_13):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$3, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$13, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	13(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_13):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13)
+
+LABEL(gobble_ashr_13):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$13, %xmm3
+	pslldq	$3, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$13, %xmm3
+	pslldq	$3, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_13)
+
+	.p2align 4
+LABEL(nibble_ashr_13):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xe000, %edx
+	jnz	LABEL(ashr_13_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$3, %r11
+	jbe	LABEL(ashr_13_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_13)
+
+	.p2align 4
+LABEL(ashr_13_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq  $13, %xmm0
+	psrldq  $13, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_14
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
+ */
+	.p2align 4
+LABEL(ashr_14):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq  $2, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$14, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	14(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_14):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14)
+
+LABEL(gobble_ashr_14):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$14, %xmm3
+	pslldq	$2, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$14, %xmm3
+	pslldq	$2, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_14)
+
+	.p2align 4
+LABEL(nibble_ashr_14):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0xc000, %edx
+	jnz	LABEL(ashr_14_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	$2, %r11
+	jbe	LABEL(ashr_14_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_14)
+
+	.p2align 4
+LABEL(ashr_14_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$14, %xmm0
+	psrldq	$14, %xmm3
+	jmp	LABEL(aftertail)
+
+/*
+ *  The following cases will be handled by ashr_15
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
+ */
+	.p2align 4
+LABEL(ashr_15):
+	pxor	%xmm0, %xmm0
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0
+	pslldq	$1, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	pxor	%xmm0, %xmm0
+	mov	$16, %rcx	/* index for loads */
+	mov	$15, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	15(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	.p2align 4
+LABEL(loop_ashr_15):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15)
+
+LABEL(gobble_ashr_15):
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$15, %xmm3
+	pslldq	$1, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15)	/* cross page boundary */
+
+	movdqa	(%rsi, %rcx), %xmm1
+	movdqa	(%rdi, %rcx), %xmm2
+	movdqa	%xmm2, %xmm4
+
+	psrldq	$15, %xmm3
+	pslldq	$1, %xmm2
+	por	%xmm3, %xmm2		/* merge into one 16byte value */
+
+	TOLOWER (%xmm1, %xmm2)
+
+	pcmpeqb	%xmm1, %xmm0
+	pcmpeqb	%xmm2, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx
+	jnz	LABEL(exit)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rcx
+	movdqa	%xmm4, %xmm3
+	jmp	LABEL(loop_ashr_15)
+
+	.p2align 4
+LABEL(nibble_ashr_15):
+	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
+	pmovmskb %xmm0, %edx
+	test	$0x8000, %edx
+	jnz	LABEL(ashr_15_exittail)
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmpq	$1, %r11
+	jbe	LABEL(ashr_15_exittail)
+# endif
+
+	pxor	%xmm0, %xmm0
+	sub	$0x1000, %r10
+	jmp	LABEL(gobble_ashr_15)
+
+	.p2align 4
+LABEL(ashr_15_exittail):
+	movdqa	(%rsi, %rcx), %xmm1
+	psrldq	$15, %xmm3
+	psrldq	$15, %xmm0
+
+	.p2align 4
+LABEL(aftertail):
+	TOLOWER (%xmm1, %xmm3)
+	pcmpeqb	%xmm3, %xmm1
+	psubb	%xmm0, %xmm1
+	pmovmskb %xmm1, %edx
+	not	%edx
+
+	.p2align 4
+LABEL(exit):
+	lea	-16(%r9, %rcx), %rax	/* locate the exact offset for rdi */
+LABEL(less32bytes):
+	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
+	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
+	test	%r8d, %r8d
+	jz	LABEL(ret)
+	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
+
+	.p2align 4
+LABEL(ret):
+LABEL(less16bytes):
+	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	%rdx, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	movzbl	(%rsi, %rdx), %ecx
+	movzbl	(%rdi, %rdx), %eax
+
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+# endif
+
+	sub	%ecx, %eax
+	ret
+
+LABEL(strcmp_exitz):
+	xor	%eax, %eax
+	ret
+
+	.p2align 4
+LABEL(Byte0):
+	movzbl	(%rsi), %ecx
+	movzbl	(%rdi), %eax
+
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+# endif
+
+	sub	%ecx, %eax
+	ret
+END (STRCMP)
+
+	.section .rodata,"a",@progbits
+	.p2align 3
+LABEL(unaligned_table):
+	.int	LABEL(ashr_1) - LABEL(unaligned_table)
+	.int	LABEL(ashr_2) - LABEL(unaligned_table)
+	.int	LABEL(ashr_3) - LABEL(unaligned_table)
+	.int	LABEL(ashr_4) - LABEL(unaligned_table)
+	.int	LABEL(ashr_5) - LABEL(unaligned_table)
+	.int	LABEL(ashr_6) - LABEL(unaligned_table)
+	.int	LABEL(ashr_7) - LABEL(unaligned_table)
+	.int	LABEL(ashr_8) - LABEL(unaligned_table)
+	.int	LABEL(ashr_9) - LABEL(unaligned_table)
+	.int	LABEL(ashr_10) - LABEL(unaligned_table)
+	.int	LABEL(ashr_11) - LABEL(unaligned_table)
+	.int	LABEL(ashr_12) - LABEL(unaligned_table)
+	.int	LABEL(ashr_13) - LABEL(unaligned_table)
+	.int	LABEL(ashr_14) - LABEL(unaligned_table)
+	.int	LABEL(ashr_15) - LABEL(unaligned_table)
+	.int	LABEL(ashr_0) - LABEL(unaligned_table)
+#endif
diff --git a/sysdeps/x86_64/multiarch/strncase_l-sse2.S b/sysdeps/x86_64/multiarch/strncase_l-sse2.S
index 0ca4c836b2..fd8ad07450 100644
--- a/sysdeps/x86_64/multiarch/strncase_l-sse2.S
+++ b/sysdeps/x86_64/multiarch/strncase_l-sse2.S
@@ -16,8 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#define STRCMP __strncasecmp_l_sse2
-#define NO_NOLOCALE_ALIAS
 #define USE_AS_STRNCASECMP_L
-#define __strncasecmp __strncasecmp_sse2
-#include <sysdeps/x86_64/strcmp.S>
+#include "strcmp-sse2.S"
diff --git a/sysdeps/x86_64/multiarch/strncmp-sse2.S b/sysdeps/x86_64/multiarch/strncmp-sse2.S
index e3ba94f926..2152b8dc3d 100644
--- a/sysdeps/x86_64/multiarch/strncmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/strncmp-sse2.S
@@ -16,15 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sysdep.h>
-
-#if IS_IN (libc)
-# define STRCMP __strncmp_sse2
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(strcmp)
-#else
-# define STRCMP strncmp
-#endif
-
 #define USE_AS_STRNCMP
-#include <sysdeps/x86_64/strcmp.S>
+#include "strcmp-sse2.S"
diff --git a/sysdeps/x86_64/strcasecmp_l.S b/sysdeps/x86_64/strcasecmp_l.S
index 5456b3a49e..84fd7fdfd3 100644
--- a/sysdeps/x86_64/strcasecmp_l.S
+++ b/sysdeps/x86_64/strcasecmp_l.S
@@ -1,6 +1,11 @@
-#define STRCMP __strcasecmp_l
-#define USE_AS_STRCASECMP_L
-#include "strcmp.S"
+/* Symbols = __strcasecmp_l and __strcasecmp.  */
+
+#include "multiarch/strcasecmp_l-sse2.S"
+
+libc_hidden_builtin_def (__strcasecmp_l)
 
 weak_alias (__strcasecmp_l, strcasecmp_l)
 libc_hidden_def (strcasecmp_l)
+
+weak_alias (__strcasecmp, strcasecmp)
+libc_hidden_def (__strcasecmp)
diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
index c38dc627f9..19e54bd3a7 100644
--- a/sysdeps/x86_64/strcmp.S
+++ b/sysdeps/x86_64/strcmp.S
@@ -16,2148 +16,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sysdep.h>
-#include "asm-syntax.h"
+/* Symbol = strcmp.  */
 
-#undef UPDATE_STRNCMP_COUNTER
-
-#ifndef LABEL
-#define LABEL(l) L(l)
-#endif
-
-#ifdef USE_AS_STRNCMP
-/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
-   if the new counter > the old one or is 0.  */
-# define UPDATE_STRNCMP_COUNTER				\
-	/* calculate left number to compare */		\
-	lea	-16(%rcx, %r11), %r9;			\
-	cmp	%r9, %r11;				\
-	jb	LABEL(strcmp_exitz);			\
-	test	%r9, %r9;				\
-	je	LABEL(strcmp_exitz);			\
-	mov	%r9, %r11
-
-#elif defined USE_AS_STRCASECMP_L
-# include "locale-defines.h"
-
-# define UPDATE_STRNCMP_COUNTER
-#elif defined USE_AS_STRNCASECMP_L
-# include "locale-defines.h"
-
-# define UPDATE_STRNCMP_COUNTER				\
-	/* calculate left number to compare */		\
-	lea	-16(%rcx, %r11), %r9;			\
-	cmp	%r9, %r11;				\
-	jb	LABEL(strcmp_exitz);			\
-	test	%r9, %r9;				\
-	je	LABEL(strcmp_exitz);			\
-	mov	%r9, %r11
-#else
-# define UPDATE_STRNCMP_COUNTER
-# ifndef STRCMP
-#  define STRCMP strcmp
-# endif
-#endif
-
-	.text
-#ifdef USE_AS_STRCASECMP_L
-# ifndef ENTRY2
-#  define ENTRY2(name) ENTRY (name)
-#  define END2(name) END (name)
-# endif
-
-ENTRY2 (__strcasecmp)
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RDX_LP
-
-	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
-	.p2align 4
-END2 (__strcasecmp)
-# ifndef NO_NOLOCALE_ALIAS
-weak_alias (__strcasecmp, strcasecmp)
-libc_hidden_def (__strcasecmp)
-# endif
-	/* FALLTHROUGH to strcasecmp_l.  */
-#elif defined USE_AS_STRNCASECMP_L
-# ifndef ENTRY2
-#  define ENTRY2(name) ENTRY (name)
-#  define END2(name) END (name)
-# endif
-
-ENTRY2 (__strncasecmp)
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RCX_LP
-
-	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
-	.p2align 4
-END2 (__strncasecmp)
-# ifndef NO_NOLOCALE_ALIAS
-weak_alias (__strncasecmp, strncasecmp)
-libc_hidden_def (__strncasecmp)
-# endif
-	/* FALLTHROUGH to strncasecmp_l.  */
-#endif
-
-ENTRY (STRCMP)
-#ifdef USE_AS_STRCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
-# else
-	mov	(%rdx), %RAX_LP
-# endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strcasecmp_l_nonascii
-#elif defined USE_AS_STRNCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
-# else
-	mov	(%rcx), %RAX_LP
-# endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strncasecmp_l_nonascii
-#endif
-
-/*
- * This implementation uses SSE to compare up to 16 bytes at a time.
- */
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	test	%RDX_LP, %RDX_LP
-	je	LABEL(strcmp_exitz)
-	cmp	$1, %RDX_LP
-	je	LABEL(Byte0)
-	mov	%RDX_LP, %R11_LP
-#endif
-	mov	%esi, %ecx
-	mov	%edi, %eax
-/* Use 64bit AND here to avoid long NOP padding.  */
-	and	$0x3f, %rcx		/* rsi alignment in cache line */
-	and	$0x3f, %rax		/* rdi alignment in cache line */
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	.section .rodata.cst16,"aM",@progbits,16
-	.align 16
-.Llcase_min:
-	.quad	0x3f3f3f3f3f3f3f3f
-	.quad	0x3f3f3f3f3f3f3f3f
-.Llcase_max:
-	.quad	0x9999999999999999
-	.quad	0x9999999999999999
-.Lcase_add:
-	.quad	0x2020202020202020
-	.quad	0x2020202020202020
-	.previous
-	movdqa	.Llcase_min(%rip), %xmm5
-# define LCASE_MIN_reg %xmm5
-	movdqa	.Llcase_max(%rip), %xmm6
-# define LCASE_MAX_reg %xmm6
-	movdqa	.Lcase_add(%rip), %xmm7
-# define CASE_ADD_reg %xmm7
-#endif
-	cmp	$0x30, %ecx
-	ja	LABEL(crosscache)	/* rsi: 16-byte load will cross cache line */
-	cmp	$0x30, %eax
-	ja	LABEL(crosscache)	/* rdi: 16-byte load will cross cache line */
-	movlpd	(%rdi), %xmm1
-	movlpd	(%rsi), %xmm2
-	movhpd	8(%rdi), %xmm1
-	movhpd	8(%rsi), %xmm2
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-#  define TOLOWER(reg1, reg2) \
-	movdqa	LCASE_MIN_reg, %xmm8;					\
-	movdqa	LCASE_MIN_reg, %xmm9;					\
-	paddb	reg1, %xmm8;					\
-	paddb	reg2, %xmm9;					\
-	pcmpgtb	LCASE_MAX_reg, %xmm8;				\
-	pcmpgtb	LCASE_MAX_reg, %xmm9;				\
-	pandn	CASE_ADD_reg, %xmm8;					\
-	pandn	CASE_ADD_reg, %xmm9;					\
-	paddb	%xmm8, reg1;					\
-	paddb	%xmm9, reg2
-	TOLOWER	(%xmm1, %xmm2)
-#else
-# define TOLOWER(reg1, reg2)
-#endif
-	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
-	jnz	LABEL(less16bytes)	/* If not, find different value or null char */
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)	/* finish comparision */
-#endif
-	add	$16, %rsi		/* prepare to search next 16 bytes */
-	add	$16, %rdi		/* prepare to search next 16 bytes */
-
-	/*
-	 * Determine source and destination string offsets from 16-byte alignment.
-	 * Use relative offset difference between the two to determine which case
-	 * below to use.
-	 */
-	.p2align 4
-LABEL(crosscache):
-	and	$0xfffffffffffffff0, %rsi	/* force %rsi is 16 byte aligned */
-	and	$0xfffffffffffffff0, %rdi	/* force %rdi is 16 byte aligned */
-	mov	$0xffff, %edx			/* for equivalent offset */
-	xor	%r8d, %r8d
-	and	$0xf, %ecx			/* offset of rsi */
-	and	$0xf, %eax			/* offset of rdi */
-	cmp	%eax, %ecx
-	je	LABEL(ashr_0)			/* rsi and rdi relative offset same */
-	ja	LABEL(bigger)
-	mov	%edx, %r8d			/* r8d is offset flag for exit tail */
-	xchg	%ecx, %eax
-	xchg	%rsi, %rdi
-LABEL(bigger):
-	lea	15(%rax), %r9
-	sub	%rcx, %r9
-	lea	LABEL(unaligned_table)(%rip), %r10
-	movslq	(%r10, %r9,4), %r9
-	lea	(%r10, %r9), %r10
-	_CET_NOTRACK jmp *%r10			/* jump to corresponding case */
-
-/*
- * The following cases will be handled by ashr_0
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
- *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
- */
-	.p2align 4
-LABEL(ashr_0):
-
-	movdqa	(%rsi), %xmm1
-	pxor	%xmm0, %xmm0			/* clear %xmm0 for null char check */
-	pcmpeqb	%xmm1, %xmm0			/* Any null chars? */
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpeqb	(%rdi), %xmm1			/* compare 16 bytes for equality */
-#else
-	movdqa	(%rdi), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm2, %xmm1			/* compare 16 bytes for equality */
-#endif
-	psubb	%xmm0, %xmm1			/* packed sub of comparison results*/
-	pmovmskb %xmm1, %r9d
-	shr	%cl, %edx			/* adjust 0xffff for offset */
-	shr	%cl, %r9d			/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	/*
-	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
-	 * the start from (16-rax) and no null char was seen.
-	 */
-	jne	LABEL(less32bytes)		/* mismatch or null char */
-	UPDATE_STRNCMP_COUNTER
-	mov	$16, %rcx
-	mov	$16, %r9
-	pxor	%xmm0, %xmm0			/* clear xmm0, may have changed above */
-
-	/*
-	 * Now both strings are aligned at 16-byte boundary. Loop over strings
-	 * checking 32-bytes per iteration.
-	 */
-	.p2align 4
-LABEL(loop_ashr_0):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)		/* mismatch or null char seen */
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rcx
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rcx
-	jmp	LABEL(loop_ashr_0)
-
-/*
- * The following cases will be handled by ashr_1
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
- *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
- */
-	.p2align 4
-LABEL(ashr_1):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	pslldq	$15, %xmm2		/* shift first string to align with second */
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx		/* adjust 0xffff for offset */
-	shr	%cl, %r9d		/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx		/* index for loads*/
-	mov	$1, %r9d		/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	1(%rdi), %r10
-	and	$0xfff, %r10		/* offset into 4K page */
-	sub	$0x1000, %r10		/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_1):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
-
-LABEL(gobble_ashr_1):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4		 /* store for next cycle */
-
-	psrldq	$1, %xmm3
-	pslldq	$15, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4		/* store for next cycle */
-
-	psrldq	$1, %xmm3
-	pslldq	$15, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_1)
-
-	/*
-	 * Nibble avoids loads across page boundary. This is to avoid a potential
-	 * access into unmapped memory.
-	 */
-	.p2align 4
-LABEL(nibble_ashr_1):
-	pcmpeqb	%xmm3, %xmm0		 /* check nibble for null char*/
-	pmovmskb %xmm0, %edx
-	test	$0xfffe, %edx
-	jnz	LABEL(ashr_1_exittail)	/* find null char*/
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$15, %r11
-	jbe	LABEL(ashr_1_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10		/* substract 4K from %r10 */
-	jmp	LABEL(gobble_ashr_1)
-
-	/*
-	 * Once find null char, determine if there is a string mismatch
-	 * before the null char.
-	 */
-	.p2align 4
-LABEL(ashr_1_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$1, %xmm0
-	psrldq	$1, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_2
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
- *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
- */
-	.p2align 4
-LABEL(ashr_2):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$14, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$2, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	2(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_2):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2)
-
-LABEL(gobble_ashr_2):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$2, %xmm3
-	pslldq	$14, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$2, %xmm3
-	pslldq	$14, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_2)
-
-	.p2align 4
-LABEL(nibble_ashr_2):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfffc, %edx
-	jnz	LABEL(ashr_2_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$14, %r11
-	jbe	LABEL(ashr_2_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_2)
-
-	.p2align 4
-LABEL(ashr_2_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$2, %xmm0
-	psrldq	$2, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_3
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
- */
-	.p2align 4
-LABEL(ashr_3):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$13, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$3, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	3(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_3):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3)
-
-LABEL(gobble_ashr_3):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$3, %xmm3
-	pslldq	$13, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$3, %xmm3
-	pslldq	$13, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_3)
-
-	.p2align 4
-LABEL(nibble_ashr_3):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfff8, %edx
-	jnz	LABEL(ashr_3_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$13, %r11
-	jbe	LABEL(ashr_3_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_3)
-
-	.p2align 4
-LABEL(ashr_3_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$3, %xmm0
-	psrldq	$3, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_4
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
- */
-	.p2align 4
-LABEL(ashr_4):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$12, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$4, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	4(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_4):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4)
-
-LABEL(gobble_ashr_4):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$4, %xmm3
-	pslldq	$12, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$4, %xmm3
-	pslldq	$12, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_4)
-
-	.p2align 4
-LABEL(nibble_ashr_4):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfff0, %edx
-	jnz	LABEL(ashr_4_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$12, %r11
-	jbe	LABEL(ashr_4_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_4)
-
-	.p2align 4
-LABEL(ashr_4_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$4, %xmm0
-	psrldq	$4, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_5
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
- */
-	.p2align 4
-LABEL(ashr_5):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$11, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$5, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	5(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_5):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5)
-
-LABEL(gobble_ashr_5):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$5, %xmm3
-	pslldq	$11, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$5, %xmm3
-	pslldq	$11, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_5)
-
-	.p2align 4
-LABEL(nibble_ashr_5):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xffe0, %edx
-	jnz	LABEL(ashr_5_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$11, %r11
-	jbe	LABEL(ashr_5_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_5)
-
-	.p2align 4
-LABEL(ashr_5_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$5, %xmm0
-	psrldq	$5, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_6
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
- */
-	.p2align 4
-LABEL(ashr_6):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$10, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$6, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	6(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_6):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6)
-
-LABEL(gobble_ashr_6):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$6, %xmm3
-	pslldq	$10, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$6, %xmm3
-	pslldq	$10, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_6)
-
-	.p2align 4
-LABEL(nibble_ashr_6):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xffc0, %edx
-	jnz	LABEL(ashr_6_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$10, %r11
-	jbe	LABEL(ashr_6_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_6)
-
-	.p2align 4
-LABEL(ashr_6_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$6, %xmm0
-	psrldq	$6, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- * The following cases will be handled by ashr_7
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
- */
-	.p2align 4
-LABEL(ashr_7):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$9, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$7, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	7(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_7):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7)
-
-LABEL(gobble_ashr_7):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$7, %xmm3
-	pslldq	$9, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$7, %xmm3
-	pslldq	$9, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_7)
-
-	.p2align 4
-LABEL(nibble_ashr_7):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xff80, %edx
-	jnz	LABEL(ashr_7_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$9, %r11
-	jbe	LABEL(ashr_7_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_7)
-
-	.p2align 4
-LABEL(ashr_7_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$7, %xmm0
-	psrldq	$7, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_8
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
- */
-	.p2align 4
-LABEL(ashr_8):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$8, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$8, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	8(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_8):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8)
-
-LABEL(gobble_ashr_8):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$8, %xmm3
-	pslldq	$8, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$8, %xmm3
-	pslldq	$8, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_8)
-
-	.p2align 4
-LABEL(nibble_ashr_8):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xff00, %edx
-	jnz	LABEL(ashr_8_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$8, %r11
-	jbe	LABEL(ashr_8_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_8)
-
-	.p2align 4
-LABEL(ashr_8_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$8, %xmm0
-	psrldq	$8, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_9
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
- */
-	.p2align 4
-LABEL(ashr_9):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$7, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$9, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	9(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_9):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9)
-
-LABEL(gobble_ashr_9):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$9, %xmm3
-	pslldq	$7, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$9, %xmm3
-	pslldq	$7, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3		/* store for next cycle */
-	jmp	LABEL(loop_ashr_9)
-
-	.p2align 4
-LABEL(nibble_ashr_9):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfe00, %edx
-	jnz	LABEL(ashr_9_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$7, %r11
-	jbe	LABEL(ashr_9_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_9)
-
-	.p2align 4
-LABEL(ashr_9_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$9, %xmm0
-	psrldq	$9, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_10
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
- */
-	.p2align 4
-LABEL(ashr_10):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$6, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$10, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	10(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_10):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10)
-
-LABEL(gobble_ashr_10):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$10, %xmm3
-	pslldq	$6, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$10, %xmm3
-	pslldq	$6, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_10)
-
-	.p2align 4
-LABEL(nibble_ashr_10):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xfc00, %edx
-	jnz	LABEL(ashr_10_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$6, %r11
-	jbe	LABEL(ashr_10_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_10)
-
-	.p2align 4
-LABEL(ashr_10_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$10, %xmm0
-	psrldq	$10, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_11
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
- */
-	.p2align 4
-LABEL(ashr_11):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$5, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$11, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	11(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_11):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11)
-
-LABEL(gobble_ashr_11):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$11, %xmm3
-	pslldq	$5, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$11, %xmm3
-	pslldq	$5, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_11)
-
-	.p2align 4
-LABEL(nibble_ashr_11):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xf800, %edx
-	jnz	LABEL(ashr_11_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$5, %r11
-	jbe	LABEL(ashr_11_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_11)
-
-	.p2align 4
-LABEL(ashr_11_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$11, %xmm0
-	psrldq	$11, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_12
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
- */
-	.p2align 4
-LABEL(ashr_12):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$4, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$12, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	12(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_12):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12)
-
-LABEL(gobble_ashr_12):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$12, %xmm3
-	pslldq	$4, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$12, %xmm3
-	pslldq	$4, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_12)
-
-	.p2align 4
-LABEL(nibble_ashr_12):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xf000, %edx
-	jnz	LABEL(ashr_12_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$4, %r11
-	jbe	LABEL(ashr_12_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_12)
-
-	.p2align 4
-LABEL(ashr_12_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$12, %xmm0
-	psrldq	$12, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_13
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
- */
-	.p2align 4
-LABEL(ashr_13):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$3, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$13, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	13(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_13):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13)
-
-LABEL(gobble_ashr_13):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$13, %xmm3
-	pslldq	$3, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$13, %xmm3
-	pslldq	$3, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_13)
-
-	.p2align 4
-LABEL(nibble_ashr_13):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xe000, %edx
-	jnz	LABEL(ashr_13_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$3, %r11
-	jbe	LABEL(ashr_13_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_13)
-
-	.p2align 4
-LABEL(ashr_13_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq  $13, %xmm0
-	psrldq  $13, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_14
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
- */
-	.p2align 4
-LABEL(ashr_14):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq  $2, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$14, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	14(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_14):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14)
-
-LABEL(gobble_ashr_14):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$14, %xmm3
-	pslldq	$2, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$14, %xmm3
-	pslldq	$2, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_14)
-
-	.p2align 4
-LABEL(nibble_ashr_14):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0xc000, %edx
-	jnz	LABEL(ashr_14_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	$2, %r11
-	jbe	LABEL(ashr_14_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_14)
-
-	.p2align 4
-LABEL(ashr_14_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$14, %xmm0
-	psrldq	$14, %xmm3
-	jmp	LABEL(aftertail)
-
-/*
- *  The following cases will be handled by ashr_15
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
- */
-	.p2align 4
-LABEL(ashr_15):
-	pxor	%xmm0, %xmm0
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0
-	pslldq	$1, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	pxor	%xmm0, %xmm0
-	mov	$16, %rcx	/* index for loads */
-	mov	$15, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	15(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	.p2align 4
-LABEL(loop_ashr_15):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15)
-
-LABEL(gobble_ashr_15):
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$15, %xmm3
-	pslldq	$1, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15)	/* cross page boundary */
-
-	movdqa	(%rsi, %rcx), %xmm1
-	movdqa	(%rdi, %rcx), %xmm2
-	movdqa	%xmm2, %xmm4
-
-	psrldq	$15, %xmm3
-	pslldq	$1, %xmm2
-	por	%xmm3, %xmm2		/* merge into one 16byte value */
-
-	TOLOWER (%xmm1, %xmm2)
-
-	pcmpeqb	%xmm1, %xmm0
-	pcmpeqb	%xmm2, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx
-	jnz	LABEL(exit)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rcx
-	movdqa	%xmm4, %xmm3
-	jmp	LABEL(loop_ashr_15)
-
-	.p2align 4
-LABEL(nibble_ashr_15):
-	pcmpeqb	%xmm3, %xmm0		/* check nibble for null char */
-	pmovmskb %xmm0, %edx
-	test	$0x8000, %edx
-	jnz	LABEL(ashr_15_exittail)
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmpq	$1, %r11
-	jbe	LABEL(ashr_15_exittail)
-#endif
-
-	pxor	%xmm0, %xmm0
-	sub	$0x1000, %r10
-	jmp	LABEL(gobble_ashr_15)
-
-	.p2align 4
-LABEL(ashr_15_exittail):
-	movdqa	(%rsi, %rcx), %xmm1
-	psrldq	$15, %xmm3
-	psrldq	$15, %xmm0
-
-	.p2align 4
-LABEL(aftertail):
-	TOLOWER (%xmm1, %xmm3)
-	pcmpeqb	%xmm3, %xmm1
-	psubb	%xmm0, %xmm1
-	pmovmskb %xmm1, %edx
-	not	%edx
-
-	.p2align 4
-LABEL(exit):
-	lea	-16(%r9, %rcx), %rax	/* locate the exact offset for rdi */
-LABEL(less32bytes):
-	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
-	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
-	test	%r8d, %r8d
-	jz	LABEL(ret)
-	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
-
-	.p2align 4
-LABEL(ret):
-LABEL(less16bytes):
-	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	%rdx, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	movzbl	(%rsi, %rdx), %ecx
-	movzbl	(%rdi, %rdx), %eax
-
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-#endif
-
-	sub	%ecx, %eax
-	ret
-
-LABEL(strcmp_exitz):
-	xor	%eax, %eax
-	ret
-
-	.p2align 4
-LABEL(Byte0):
-	movzbl	(%rsi), %ecx
-	movzbl	(%rdi), %eax
-
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-#endif
-
-	sub	%ecx, %eax
-	ret
-END (STRCMP)
-
-	.section .rodata,"a",@progbits
-	.p2align 3
-LABEL(unaligned_table):
-	.int	LABEL(ashr_1) - LABEL(unaligned_table)
-	.int	LABEL(ashr_2) - LABEL(unaligned_table)
-	.int	LABEL(ashr_3) - LABEL(unaligned_table)
-	.int	LABEL(ashr_4) - LABEL(unaligned_table)
-	.int	LABEL(ashr_5) - LABEL(unaligned_table)
-	.int	LABEL(ashr_6) - LABEL(unaligned_table)
-	.int	LABEL(ashr_7) - LABEL(unaligned_table)
-	.int	LABEL(ashr_8) - LABEL(unaligned_table)
-	.int	LABEL(ashr_9) - LABEL(unaligned_table)
-	.int	LABEL(ashr_10) - LABEL(unaligned_table)
-	.int	LABEL(ashr_11) - LABEL(unaligned_table)
-	.int	LABEL(ashr_12) - LABEL(unaligned_table)
-	.int	LABEL(ashr_13) - LABEL(unaligned_table)
-	.int	LABEL(ashr_14) - LABEL(unaligned_table)
-	.int	LABEL(ashr_15) - LABEL(unaligned_table)
-	.int	LABEL(ashr_0) - LABEL(unaligned_table)
-libc_hidden_builtin_def (STRCMP)
+#include "multiarch/strcmp-sse2.S"
+libc_hidden_builtin_def (strcmp)
diff --git a/sysdeps/x86_64/strncase_l.S b/sysdeps/x86_64/strncase_l.S
index c725cd85b3..3780fc50b1 100644
--- a/sysdeps/x86_64/strncase_l.S
+++ b/sysdeps/x86_64/strncase_l.S
@@ -1,6 +1,11 @@
-#define STRCMP __strncasecmp_l
-#define USE_AS_STRNCASECMP_L
-#include "strcmp.S"
+/* Symbols = __strncasecmp_l and __strncasecmp.  */
+
+#include "multiarch/strncase_l-sse2.S"
+
+libc_hidden_builtin_def (__strncasecmp_l)
 
 weak_alias (__strncasecmp_l, strncasecmp_l)
 libc_hidden_def (strncasecmp_l)
+
+weak_alias (__strncasecmp, strncasecmp)
+libc_hidden_def (__strncasecmp)
diff --git a/sysdeps/x86_64/strncmp.S b/sysdeps/x86_64/strncmp.S
index 0af34e7f15..13d9e82ee2 100644
--- a/sysdeps/x86_64/strncmp.S
+++ b/sysdeps/x86_64/strncmp.S
@@ -1,3 +1,4 @@
-#define STRCMP strncmp
-#define USE_AS_STRNCMP
-#include "strcmp.S"
+/* Symbol = strncmp.  */
+
+#include "multiarch/strncmp-sse2.S"
+libc_hidden_builtin_def (strncmp)
-- 
2.34.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S
  2022-07-12 19:28 [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII Noah Goldstein
  2022-07-12 19:28 ` [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S Noah Goldstein
@ 2022-07-12 19:28 ` Noah Goldstein
  2022-07-13  0:05   ` H.J. Lu
  2022-07-12 19:28 ` [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S Noah Goldstein
  2022-07-12 23:30 ` [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII H.J. Lu
  3 siblings, 1 reply; 8+ messages in thread
From: Noah Goldstein @ 2022-07-12 19:28 UTC (permalink / raw)
  To: libc-alpha

This commit doesn't affect libc.so.6, its just housekeeping to prepare
for adding explicit ISA level support.

Tested build on x86_64 and x86_32 with/without multiarch.
---
 sysdeps/x86_64/multiarch/wcscmp-sse2.S | 936 ++++++++++++++++++++++++-
 sysdeps/x86_64/wcscmp.S                | 932 +-----------------------
 2 files changed, 934 insertions(+), 934 deletions(-)

diff --git a/sysdeps/x86_64/multiarch/wcscmp-sse2.S b/sysdeps/x86_64/multiarch/wcscmp-sse2.S
index 72a19bd64d..6cb7d9faf9 100644
--- a/sysdeps/x86_64/multiarch/wcscmp-sse2.S
+++ b/sysdeps/x86_64/multiarch/wcscmp-sse2.S
@@ -16,8 +16,936 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#if IS_IN (libc)
-# define __wcscmp __wcscmp_sse2
-#endif
+#define USE_AS_WCSCMP
+#define STRCMP_ISA	_sse2
+#include "strcmp-naming.h"
 
-#include "../wcscmp.S"
+#include <sysdep.h>
+
+/* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */
+
+	.text
+ENTRY (STRCMP)
+/*
+	* This implementation uses SSE to compare up to 16 bytes at a time.
+*/
+	mov	%esi, %eax
+	mov	%edi, %edx
+	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
+	mov	%al, %ch
+	mov	%dl, %cl
+	and	$63, %eax		/* rsi alignment in cache line */
+	and	$63, %edx		/* rdi alignment in cache line */
+	and	$15, %cl
+	jz	L(continue_00)
+	cmp	$16, %edx
+	jb	L(continue_0)
+	cmp	$32, %edx
+	jb	L(continue_16)
+	cmp	$48, %edx
+	jb	L(continue_32)
+
+L(continue_48):
+	and	$15, %ch
+	jz	L(continue_48_00)
+	cmp	$16, %eax
+	jb	L(continue_0_48)
+	cmp	$32, %eax
+	jb	L(continue_16_48)
+	cmp	$48, %eax
+	jb	L(continue_32_48)
+
+	.p2align 4
+L(continue_48_48):
+	mov	(%rsi), %ecx
+	cmp	%ecx, (%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	4(%rsi), %ecx
+	cmp	%ecx, 4(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	8(%rsi), %ecx
+	cmp	%ecx, 8(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	12(%rsi), %ecx
+	cmp	%ecx, 12(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	movdqu	16(%rdi), %xmm1
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rdi), %xmm1
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	movdqu	48(%rdi), %xmm1
+	movdqu	48(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_48_48)
+
+L(continue_0):
+	and	$15, %ch
+	jz	L(continue_0_00)
+	cmp	$16, %eax
+	jb	L(continue_0_0)
+	cmp	$32, %eax
+	jb	L(continue_0_16)
+	cmp	$48, %eax
+	jb	L(continue_0_32)
+
+	.p2align 4
+L(continue_0_48):
+	mov	(%rsi), %ecx
+	cmp	%ecx, (%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	4(%rsi), %ecx
+	cmp	%ecx, 4(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	8(%rsi), %ecx
+	cmp	%ecx, 8(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	12(%rsi), %ecx
+	cmp	%ecx, 12(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	movdqu	16(%rdi), %xmm1
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rdi), %xmm1
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	mov	48(%rsi), %ecx
+	cmp	%ecx, 48(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	52(%rsi), %ecx
+	cmp	%ecx, 52(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	56(%rsi), %ecx
+	cmp	%ecx, 56(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	60(%rsi), %ecx
+	cmp	%ecx, 60(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_0_48)
+
+	.p2align 4
+L(continue_00):
+	and	$15, %ch
+	jz	L(continue_00_00)
+	cmp	$16, %eax
+	jb	L(continue_00_0)
+	cmp	$32, %eax
+	jb	L(continue_00_16)
+	cmp	$48, %eax
+	jb	L(continue_00_32)
+
+	.p2align 4
+L(continue_00_48):
+	pcmpeqd	(%rdi), %xmm0
+	mov	(%rdi), %eax
+	pmovmskb %xmm0, %ecx
+	test	%ecx, %ecx
+	jnz	L(less4_double_words1)
+
+	cmp	(%rsi), %eax
+	jne	L(nequal)
+
+	mov	4(%rdi), %eax
+	cmp	4(%rsi), %eax
+	jne	L(nequal)
+
+	mov	8(%rdi), %eax
+	cmp	8(%rsi), %eax
+	jne	L(nequal)
+
+	mov	12(%rdi), %eax
+	cmp	12(%rsi), %eax
+	jne	L(nequal)
+
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	movdqu	48(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	48(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_00_48)
+
+	.p2align 4
+L(continue_32):
+	and	$15, %ch
+	jz	L(continue_32_00)
+	cmp	$16, %eax
+	jb	L(continue_0_32)
+	cmp	$32, %eax
+	jb	L(continue_16_32)
+	cmp	$48, %eax
+	jb	L(continue_32_32)
+
+	.p2align 4
+L(continue_32_48):
+	mov	(%rsi), %ecx
+	cmp	%ecx, (%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	4(%rsi), %ecx
+	cmp	%ecx, 4(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	8(%rsi), %ecx
+	cmp	%ecx, 8(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	12(%rsi), %ecx
+	cmp	%ecx, 12(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	16(%rsi), %ecx
+	cmp	%ecx, 16(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	20(%rsi), %ecx
+	cmp	%ecx, 20(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	24(%rsi), %ecx
+	cmp	%ecx, 24(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	28(%rsi), %ecx
+	cmp	%ecx, 28(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	movdqu	32(%rdi), %xmm1
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	movdqu	48(%rdi), %xmm1
+	movdqu	48(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_32_48)
+
+	.p2align 4
+L(continue_16):
+	and	$15, %ch
+	jz	L(continue_16_00)
+	cmp	$16, %eax
+	jb	L(continue_0_16)
+	cmp	$32, %eax
+	jb	L(continue_16_16)
+	cmp	$48, %eax
+	jb	L(continue_16_32)
+
+	.p2align 4
+L(continue_16_48):
+	mov	(%rsi), %ecx
+	cmp	%ecx, (%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	4(%rsi), %ecx
+	cmp	%ecx, 4(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	8(%rsi), %ecx
+	cmp	%ecx, 8(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	12(%rsi), %ecx
+	cmp	%ecx, 12(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	movdqu	16(%rdi), %xmm1
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	mov	32(%rsi), %ecx
+	cmp	%ecx, 32(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	36(%rsi), %ecx
+	cmp	%ecx, 36(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	40(%rsi), %ecx
+	cmp	%ecx, 40(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	44(%rsi), %ecx
+	cmp	%ecx, 44(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	movdqu	48(%rdi), %xmm1
+	movdqu	48(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_16_48)
+
+	.p2align 4
+L(continue_00_00):
+	movdqa	(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqa	16(%rdi), %xmm3
+	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rsi), %xmm3		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
+	pmovmskb %xmm3, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqa	32(%rdi), %xmm5
+	pcmpeqd	%xmm5, %xmm0		/* Any null double_word? */
+	pcmpeqd	32(%rsi), %xmm5		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm5		/* packed sub of comparison results*/
+	pmovmskb %xmm5, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	movdqa	48(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_00_00)
+
+	.p2align 4
+L(continue_00_32):
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	add	$16, %rsi
+	add	$16, %rdi
+	jmp	L(continue_00_48)
+
+	.p2align 4
+L(continue_00_16):
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	add	$32, %rsi
+	add	$32, %rdi
+	jmp	L(continue_00_48)
+
+	.p2align 4
+L(continue_00_0):
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
+	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	add	$48, %rsi
+	add	$48, %rdi
+	jmp	L(continue_00_48)
+
+	.p2align 4
+L(continue_48_00):
+	pcmpeqd	(%rsi), %xmm0
+	mov	(%rdi), %eax
+	pmovmskb %xmm0, %ecx
+	test	%ecx, %ecx
+	jnz	L(less4_double_words1)
+
+	cmp	(%rsi), %eax
+	jne	L(nequal)
+
+	mov	4(%rdi), %eax
+	cmp	4(%rsi), %eax
+	jne	L(nequal)
+
+	mov	8(%rdi), %eax
+	cmp	8(%rsi), %eax
+	jne	L(nequal)
+
+	mov	12(%rdi), %eax
+	cmp	12(%rsi), %eax
+	jne	L(nequal)
+
+	movdqu	16(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	movdqu	48(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_48)
+
+	add	$64, %rsi
+	add	$64, %rdi
+	jmp	L(continue_48_00)
+
+	.p2align 4
+L(continue_32_00):
+	movdqu	(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	add	$16, %rsi
+	add	$16, %rdi
+	jmp	L(continue_48_00)
+
+	.p2align 4
+L(continue_16_00):
+	movdqu	(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	add	$32, %rsi
+	add	$32, %rdi
+	jmp	L(continue_48_00)
+
+	.p2align 4
+L(continue_0_00):
+	movdqu	(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rdi), %xmm1
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	add	$48, %rsi
+	add	$48, %rdi
+	jmp	L(continue_48_00)
+
+	.p2align 4
+L(continue_32_32):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	add	$16, %rsi
+	add	$16, %rdi
+	jmp	L(continue_48_48)
+
+	.p2align 4
+L(continue_16_16):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rdi), %xmm3
+	movdqu	16(%rsi), %xmm4
+	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
+	pmovmskb %xmm3, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	add	$32, %rsi
+	add	$32, %rdi
+	jmp	L(continue_48_48)
+
+	.p2align 4
+L(continue_0_0):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rdi), %xmm3
+	movdqu	16(%rsi), %xmm4
+	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
+	pmovmskb %xmm3, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	movdqu	32(%rdi), %xmm1
+	movdqu	32(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_32)
+
+	add	$48, %rsi
+	add	$48, %rdi
+	jmp	L(continue_48_48)
+
+	.p2align 4
+L(continue_0_16):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	movdqu	16(%rdi), %xmm1
+	movdqu	16(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words_16)
+
+	add	$32, %rsi
+	add	$32, %rdi
+	jmp	L(continue_32_48)
+
+	.p2align 4
+L(continue_0_32):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	add	$16, %rsi
+	add	$16, %rdi
+	jmp	L(continue_16_48)
+
+	.p2align 4
+L(continue_16_32):
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
+	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
+	jnz	L(less4_double_words)
+
+	add	$16, %rsi
+	add	$16, %rdi
+	jmp	L(continue_32_48)
+
+	.p2align 4
+L(less4_double_words1):
+	cmp	(%rsi), %eax
+	jne	L(nequal)
+	test	%eax, %eax
+	jz	L(equal)
+
+	mov	4(%rsi), %ecx
+	cmp	%ecx, 4(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	8(%rsi), %ecx
+	cmp	%ecx, 8(%rdi)
+	jne	L(nequal)
+	test	%ecx, %ecx
+	jz	L(equal)
+
+	mov	12(%rsi), %ecx
+	cmp	%ecx, 12(%rdi)
+	jne	L(nequal)
+	xor	%eax, %eax
+	ret
+
+	.p2align 4
+L(less4_double_words):
+	xor	%eax, %eax
+	test	%dl, %dl
+	jz	L(next_two_double_words)
+	and	$15, %dl
+	jz	L(second_double_word)
+	mov	(%rdi), %eax
+	cmp	(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(second_double_word):
+	mov	4(%rdi), %eax
+	cmp	4(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(next_two_double_words):
+	and	$15, %dh
+	jz	L(fourth_double_word)
+	mov	8(%rdi), %eax
+	cmp	8(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(fourth_double_word):
+	mov	12(%rdi), %eax
+	cmp	12(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(less4_double_words_16):
+	xor	%eax, %eax
+	test	%dl, %dl
+	jz	L(next_two_double_words_16)
+	and	$15, %dl
+	jz	L(second_double_word_16)
+	mov	16(%rdi), %eax
+	cmp	16(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(second_double_word_16):
+	mov	20(%rdi), %eax
+	cmp	20(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(next_two_double_words_16):
+	and	$15, %dh
+	jz	L(fourth_double_word_16)
+	mov	24(%rdi), %eax
+	cmp	24(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(fourth_double_word_16):
+	mov	28(%rdi), %eax
+	cmp	28(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(less4_double_words_32):
+	xor	%eax, %eax
+	test	%dl, %dl
+	jz	L(next_two_double_words_32)
+	and	$15, %dl
+	jz	L(second_double_word_32)
+	mov	32(%rdi), %eax
+	cmp	32(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(second_double_word_32):
+	mov	36(%rdi), %eax
+	cmp	36(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(next_two_double_words_32):
+	and	$15, %dh
+	jz	L(fourth_double_word_32)
+	mov	40(%rdi), %eax
+	cmp	40(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(fourth_double_word_32):
+	mov	44(%rdi), %eax
+	cmp	44(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(less4_double_words_48):
+	xor	%eax, %eax
+	test	%dl, %dl
+	jz	L(next_two_double_words_48)
+	and	$15, %dl
+	jz	L(second_double_word_48)
+	mov	48(%rdi), %eax
+	cmp	48(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(second_double_word_48):
+	mov	52(%rdi), %eax
+	cmp	52(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(next_two_double_words_48):
+	and	$15, %dh
+	jz	L(fourth_double_word_48)
+	mov	56(%rdi), %eax
+	cmp	56(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(fourth_double_word_48):
+	mov	60(%rdi), %eax
+	cmp	60(%rsi), %eax
+	jne	L(nequal)
+	ret
+
+	.p2align 4
+L(nequal):
+	mov	$1, %eax
+	jg	L(nequal_bigger)
+	neg	%eax
+
+L(nequal_bigger):
+	ret
+
+	.p2align 4
+L(equal):
+	xor	%rax, %rax
+	ret
+
+END (STRCMP)
diff --git a/sysdeps/x86_64/wcscmp.S b/sysdeps/x86_64/wcscmp.S
index 5cb42f47b9..e04cdbf5fe 100644
--- a/sysdeps/x86_64/wcscmp.S
+++ b/sysdeps/x86_64/wcscmp.S
@@ -16,936 +16,8 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sysdep.h>
+/* Symbol = __wcscmp.  */
 
-/* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */
-
-	.text
-ENTRY (__wcscmp)
-/*
-	* This implementation uses SSE to compare up to 16 bytes at a time.
-*/
-	mov	%esi, %eax
-	mov	%edi, %edx
-	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
-	mov	%al, %ch
-	mov	%dl, %cl
-	and	$63, %eax		/* rsi alignment in cache line */
-	and	$63, %edx		/* rdi alignment in cache line */
-	and	$15, %cl
-	jz	L(continue_00)
-	cmp	$16, %edx
-	jb	L(continue_0)
-	cmp	$32, %edx
-	jb	L(continue_16)
-	cmp	$48, %edx
-	jb	L(continue_32)
-
-L(continue_48):
-	and	$15, %ch
-	jz	L(continue_48_00)
-	cmp	$16, %eax
-	jb	L(continue_0_48)
-	cmp	$32, %eax
-	jb	L(continue_16_48)
-	cmp	$48, %eax
-	jb	L(continue_32_48)
-
-	.p2align 4
-L(continue_48_48):
-	mov	(%rsi), %ecx
-	cmp	%ecx, (%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	4(%rsi), %ecx
-	cmp	%ecx, 4(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	8(%rsi), %ecx
-	cmp	%ecx, 8(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	12(%rsi), %ecx
-	cmp	%ecx, 12(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	movdqu	16(%rdi), %xmm1
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rdi), %xmm1
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	movdqu	48(%rdi), %xmm1
-	movdqu	48(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_48_48)
-
-L(continue_0):
-	and	$15, %ch
-	jz	L(continue_0_00)
-	cmp	$16, %eax
-	jb	L(continue_0_0)
-	cmp	$32, %eax
-	jb	L(continue_0_16)
-	cmp	$48, %eax
-	jb	L(continue_0_32)
-
-	.p2align 4
-L(continue_0_48):
-	mov	(%rsi), %ecx
-	cmp	%ecx, (%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	4(%rsi), %ecx
-	cmp	%ecx, 4(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	8(%rsi), %ecx
-	cmp	%ecx, 8(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	12(%rsi), %ecx
-	cmp	%ecx, 12(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	movdqu	16(%rdi), %xmm1
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rdi), %xmm1
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	mov	48(%rsi), %ecx
-	cmp	%ecx, 48(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	52(%rsi), %ecx
-	cmp	%ecx, 52(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	56(%rsi), %ecx
-	cmp	%ecx, 56(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	60(%rsi), %ecx
-	cmp	%ecx, 60(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_0_48)
-
-	.p2align 4
-L(continue_00):
-	and	$15, %ch
-	jz	L(continue_00_00)
-	cmp	$16, %eax
-	jb	L(continue_00_0)
-	cmp	$32, %eax
-	jb	L(continue_00_16)
-	cmp	$48, %eax
-	jb	L(continue_00_32)
-
-	.p2align 4
-L(continue_00_48):
-	pcmpeqd	(%rdi), %xmm0
-	mov	(%rdi), %eax
-	pmovmskb %xmm0, %ecx
-	test	%ecx, %ecx
-	jnz	L(less4_double_words1)
-
-	cmp	(%rsi), %eax
-	jne	L(nequal)
-
-	mov	4(%rdi), %eax
-	cmp	4(%rsi), %eax
-	jne	L(nequal)
-
-	mov	8(%rdi), %eax
-	cmp	8(%rsi), %eax
-	jne	L(nequal)
-
-	mov	12(%rdi), %eax
-	cmp	12(%rsi), %eax
-	jne	L(nequal)
-
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	movdqu	48(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	48(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_00_48)
-
-	.p2align 4
-L(continue_32):
-	and	$15, %ch
-	jz	L(continue_32_00)
-	cmp	$16, %eax
-	jb	L(continue_0_32)
-	cmp	$32, %eax
-	jb	L(continue_16_32)
-	cmp	$48, %eax
-	jb	L(continue_32_32)
-
-	.p2align 4
-L(continue_32_48):
-	mov	(%rsi), %ecx
-	cmp	%ecx, (%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	4(%rsi), %ecx
-	cmp	%ecx, 4(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	8(%rsi), %ecx
-	cmp	%ecx, 8(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	12(%rsi), %ecx
-	cmp	%ecx, 12(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	16(%rsi), %ecx
-	cmp	%ecx, 16(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	20(%rsi), %ecx
-	cmp	%ecx, 20(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	24(%rsi), %ecx
-	cmp	%ecx, 24(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	28(%rsi), %ecx
-	cmp	%ecx, 28(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	movdqu	32(%rdi), %xmm1
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	movdqu	48(%rdi), %xmm1
-	movdqu	48(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_32_48)
-
-	.p2align 4
-L(continue_16):
-	and	$15, %ch
-	jz	L(continue_16_00)
-	cmp	$16, %eax
-	jb	L(continue_0_16)
-	cmp	$32, %eax
-	jb	L(continue_16_16)
-	cmp	$48, %eax
-	jb	L(continue_16_32)
-
-	.p2align 4
-L(continue_16_48):
-	mov	(%rsi), %ecx
-	cmp	%ecx, (%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	4(%rsi), %ecx
-	cmp	%ecx, 4(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	8(%rsi), %ecx
-	cmp	%ecx, 8(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	12(%rsi), %ecx
-	cmp	%ecx, 12(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	movdqu	16(%rdi), %xmm1
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	mov	32(%rsi), %ecx
-	cmp	%ecx, 32(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	36(%rsi), %ecx
-	cmp	%ecx, 36(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	40(%rsi), %ecx
-	cmp	%ecx, 40(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	44(%rsi), %ecx
-	cmp	%ecx, 44(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	movdqu	48(%rdi), %xmm1
-	movdqu	48(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_16_48)
-
-	.p2align 4
-L(continue_00_00):
-	movdqa	(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqa	16(%rdi), %xmm3
-	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rsi), %xmm3		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
-	pmovmskb %xmm3, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqa	32(%rdi), %xmm5
-	pcmpeqd	%xmm5, %xmm0		/* Any null double_word? */
-	pcmpeqd	32(%rsi), %xmm5		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm5		/* packed sub of comparison results*/
-	pmovmskb %xmm5, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	movdqa	48(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_00_00)
-
-	.p2align 4
-L(continue_00_32):
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	add	$16, %rsi
-	add	$16, %rdi
-	jmp	L(continue_00_48)
-
-	.p2align 4
-L(continue_00_16):
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	add	$32, %rsi
-	add	$32, %rdi
-	jmp	L(continue_00_48)
-
-	.p2align 4
-L(continue_00_0):
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm2, %xmm0		/* Any null double_word? */
-	pcmpeqd	32(%rdi), %xmm2		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	add	$48, %rsi
-	add	$48, %rdi
-	jmp	L(continue_00_48)
-
-	.p2align 4
-L(continue_48_00):
-	pcmpeqd	(%rsi), %xmm0
-	mov	(%rdi), %eax
-	pmovmskb %xmm0, %ecx
-	test	%ecx, %ecx
-	jnz	L(less4_double_words1)
-
-	cmp	(%rsi), %eax
-	jne	L(nequal)
-
-	mov	4(%rdi), %eax
-	cmp	4(%rsi), %eax
-	jne	L(nequal)
-
-	mov	8(%rdi), %eax
-	cmp	8(%rsi), %eax
-	jne	L(nequal)
-
-	mov	12(%rdi), %eax
-	cmp	12(%rsi), %eax
-	jne	L(nequal)
-
-	movdqu	16(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	movdqu	48(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	48(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_48)
-
-	add	$64, %rsi
-	add	$64, %rdi
-	jmp	L(continue_48_00)
-
-	.p2align 4
-L(continue_32_00):
-	movdqu	(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	add	$16, %rsi
-	add	$16, %rdi
-	jmp	L(continue_48_00)
-
-	.p2align 4
-L(continue_16_00):
-	movdqu	(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	add	$32, %rsi
-	add	$32, %rdi
-	jmp	L(continue_48_00)
-
-	.p2align 4
-L(continue_0_00):
-	movdqu	(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	16(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rdi), %xmm1
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	32(%rsi), %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	add	$48, %rsi
-	add	$48, %rdi
-	jmp	L(continue_48_00)
-
-	.p2align 4
-L(continue_32_32):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	add	$16, %rsi
-	add	$16, %rdi
-	jmp	L(continue_48_48)
-
-	.p2align 4
-L(continue_16_16):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rdi), %xmm3
-	movdqu	16(%rsi), %xmm4
-	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
-	pmovmskb %xmm3, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	add	$32, %rsi
-	add	$32, %rdi
-	jmp	L(continue_48_48)
-
-	.p2align 4
-L(continue_0_0):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rdi), %xmm3
-	movdqu	16(%rsi), %xmm4
-	pcmpeqd	%xmm3, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm4, %xmm3		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm3		/* packed sub of comparison results*/
-	pmovmskb %xmm3, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	movdqu	32(%rdi), %xmm1
-	movdqu	32(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_32)
-
-	add	$48, %rsi
-	add	$48, %rdi
-	jmp	L(continue_48_48)
-
-	.p2align 4
-L(continue_0_16):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	movdqu	16(%rdi), %xmm1
-	movdqu	16(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words_16)
-
-	add	$32, %rsi
-	add	$32, %rdi
-	jmp	L(continue_32_48)
-
-	.p2align 4
-L(continue_0_32):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	add	$16, %rsi
-	add	$16, %rdi
-	jmp	L(continue_16_48)
-
-	.p2align 4
-L(continue_16_32):
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-	pcmpeqd	%xmm1, %xmm0		/* Any null double_word? */
-	pcmpeqd	%xmm2, %xmm1		/* compare first 4 double_words for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 4 double_words are same, edx == 0xffff */
-	jnz	L(less4_double_words)
-
-	add	$16, %rsi
-	add	$16, %rdi
-	jmp	L(continue_32_48)
-
-	.p2align 4
-L(less4_double_words1):
-	cmp	(%rsi), %eax
-	jne	L(nequal)
-	test	%eax, %eax
-	jz	L(equal)
-
-	mov	4(%rsi), %ecx
-	cmp	%ecx, 4(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	8(%rsi), %ecx
-	cmp	%ecx, 8(%rdi)
-	jne	L(nequal)
-	test	%ecx, %ecx
-	jz	L(equal)
-
-	mov	12(%rsi), %ecx
-	cmp	%ecx, 12(%rdi)
-	jne	L(nequal)
-	xor	%eax, %eax
-	ret
-
-	.p2align 4
-L(less4_double_words):
-	xor	%eax, %eax
-	test	%dl, %dl
-	jz	L(next_two_double_words)
-	and	$15, %dl
-	jz	L(second_double_word)
-	mov	(%rdi), %eax
-	cmp	(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(second_double_word):
-	mov	4(%rdi), %eax
-	cmp	4(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(next_two_double_words):
-	and	$15, %dh
-	jz	L(fourth_double_word)
-	mov	8(%rdi), %eax
-	cmp	8(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(fourth_double_word):
-	mov	12(%rdi), %eax
-	cmp	12(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(less4_double_words_16):
-	xor	%eax, %eax
-	test	%dl, %dl
-	jz	L(next_two_double_words_16)
-	and	$15, %dl
-	jz	L(second_double_word_16)
-	mov	16(%rdi), %eax
-	cmp	16(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(second_double_word_16):
-	mov	20(%rdi), %eax
-	cmp	20(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(next_two_double_words_16):
-	and	$15, %dh
-	jz	L(fourth_double_word_16)
-	mov	24(%rdi), %eax
-	cmp	24(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(fourth_double_word_16):
-	mov	28(%rdi), %eax
-	cmp	28(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(less4_double_words_32):
-	xor	%eax, %eax
-	test	%dl, %dl
-	jz	L(next_two_double_words_32)
-	and	$15, %dl
-	jz	L(second_double_word_32)
-	mov	32(%rdi), %eax
-	cmp	32(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(second_double_word_32):
-	mov	36(%rdi), %eax
-	cmp	36(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(next_two_double_words_32):
-	and	$15, %dh
-	jz	L(fourth_double_word_32)
-	mov	40(%rdi), %eax
-	cmp	40(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(fourth_double_word_32):
-	mov	44(%rdi), %eax
-	cmp	44(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(less4_double_words_48):
-	xor	%eax, %eax
-	test	%dl, %dl
-	jz	L(next_two_double_words_48)
-	and	$15, %dl
-	jz	L(second_double_word_48)
-	mov	48(%rdi), %eax
-	cmp	48(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(second_double_word_48):
-	mov	52(%rdi), %eax
-	cmp	52(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(next_two_double_words_48):
-	and	$15, %dh
-	jz	L(fourth_double_word_48)
-	mov	56(%rdi), %eax
-	cmp	56(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(fourth_double_word_48):
-	mov	60(%rdi), %eax
-	cmp	60(%rsi), %eax
-	jne	L(nequal)
-	ret
-
-	.p2align 4
-L(nequal):
-	mov	$1, %eax
-	jg	L(nequal_bigger)
-	neg	%eax
-
-L(nequal_bigger):
-	ret
-
-	.p2align 4
-L(equal):
-	xor	%rax, %rax
-	ret
-
-END (__wcscmp)
-#ifndef __wcscmp
+#include "multiarch/wcscmp-sse2.S"
 libc_hidden_def (__wcscmp)
 weak_alias (__wcscmp, wcscmp)
-#endif
-- 
2.34.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S
  2022-07-12 19:28 [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII Noah Goldstein
  2022-07-12 19:28 ` [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S Noah Goldstein
  2022-07-12 19:28 ` [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S Noah Goldstein
@ 2022-07-12 19:28 ` Noah Goldstein
  2022-07-13  0:07   ` H.J. Lu
  2022-07-12 23:30 ` [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII H.J. Lu
  3 siblings, 1 reply; 8+ messages in thread
From: Noah Goldstein @ 2022-07-12 19:28 UTC (permalink / raw)
  To: libc-alpha

This commit doesn't affect libc.so.6, its just housekeeping to prepare
for adding explicit ISA level support.

Tested build on x86_64 and x86_32 with/without multiarch.
---
 .../x86_64/multiarch/strcasecmp_l-sse4_2.S    |    3 +-
 sysdeps/x86_64/multiarch/strcmp-sse42.S       | 1782 -----------------
 sysdeps/x86_64/multiarch/strcmp-sse4_2.S      | 1763 +++++++++++++++-
 sysdeps/x86_64/multiarch/strncase_l-sse4_2.S  |    3 +-
 sysdeps/x86_64/multiarch/strncmp-sse4_2.S     |    7 +-
 5 files changed, 1766 insertions(+), 1792 deletions(-)
 delete mode 100644 sysdeps/x86_64/multiarch/strcmp-sse42.S

diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S b/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
index 411ab7d283..ac03b95756 100644
--- a/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
+++ b/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
@@ -16,6 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#define STRCMP_SSE42 __strcasecmp_l_sse42
 #define USE_AS_STRCASECMP_L
-#include "strcmp-sse42.S"
+#include "strcmp-sse4_2.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S
deleted file mode 100644
index 60313c647a..0000000000
--- a/sysdeps/x86_64/multiarch/strcmp-sse42.S
+++ /dev/null
@@ -1,1782 +0,0 @@
-/* strcmp with SSE4.2
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-
-#ifndef STRCMP_SSE42
-# define STRCMP_SSE42	__strcmp_sse42
-#endif
-
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-# include "locale-defines.h"
-#endif
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
-   if the new counter > the old one or is 0.  */
-# define UPDATE_STRNCMP_COUNTER				\
-	/* calculate left number to compare */		\
-	lea	-16(%rcx, %r11), %r9;			\
-	cmp	%r9, %r11;				\
-	jb	LABEL(strcmp_exitz);			\
-	test	%r9, %r9;				\
-	je	LABEL(strcmp_exitz);			\
-	mov	%r9, %r11
-#else
-# define UPDATE_STRNCMP_COUNTER
-#endif
-
-#define SECTION	sse4.2
-#define GLABEL(l)	l##_sse42
-
-#define LABEL(l)	.L##l
-
-/* We use 0x1a:
-	_SIDD_SBYTE_OPS
-	| _SIDD_CMP_EQUAL_EACH
-	| _SIDD_NEGATIVE_POLARITY
-	| _SIDD_LEAST_SIGNIFICANT
-   on pcmpistri to find out if two 16byte data elements are the same
-   and the offset of the first different byte.  There are 4 cases:
-
-   1. Both 16byte data elements are valid and identical.
-   2. Both 16byte data elements have EOS and identical.
-   3. Both 16byte data elements are valid and they differ at offset X.
-   4. At least one 16byte data element has EOS at offset X.  Two 16byte
-      data elements must differ at or before offset X.
-
-   Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
-
-   case		ECX	CFlag	ZFlag	SFlag
-    1		16	  0	  0	  0
-    2		16	  0	  1	  1
-    3		 X	  1	  0	  0
-    4	       0 <= X	  1	 0/1	 0/1
-
-   We exit from the loop for cases 2, 3 and 4 with jbe which branches
-   when either CFlag or ZFlag is 1.  If CFlag == 0, we return 0 for
-   case 2.  */
-
-	/* Put all SSE 4.2 functions together.  */
-	.section .text.SECTION,"ax",@progbits
-	.align	16
-	.type	STRCMP_SSE42, @function
-	.globl	STRCMP_SSE42
-#ifdef USE_AS_STRCASECMP_L
-ENTRY (GLABEL(__strcasecmp))
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RDX_LP
-
-	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
-	.p2align 4
-END (GLABEL(__strcasecmp))
-	/* FALLTHROUGH to strcasecmp_l.  */
-#endif
-#ifdef USE_AS_STRNCASECMP_L
-ENTRY (GLABEL(__strncasecmp))
-	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
-	mov	%fs:(%rax),%RCX_LP
-
-	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
-	.p2align 4
-END (GLABEL(__strncasecmp))
-	/* FALLTHROUGH to strncasecmp_l.  */
-#endif
-
-
-#define arg arg
-
-STRCMP_SSE42:
-	cfi_startproc
-	_CET_ENDBR
-	CALL_MCOUNT
-
-/*
- * This implementation uses SSE to compare up to 16 bytes at a time.
- */
-#ifdef USE_AS_STRCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
-# else
-	mov	(%rdx), %RAX_LP
-# endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strcasecmp_l_nonascii
-#endif
-#ifdef USE_AS_STRNCASECMP_L
-	/* We have to fall back on the C implementation for locales
-	   with encodings not matching ASCII for single bytes.  */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
-	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
-# else
-	mov	(%rcx), %RAX_LP
-# endif
-	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
-	jne	__strncasecmp_l_nonascii
-#endif
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	test	%RDX_LP, %RDX_LP
-	je	LABEL(strcmp_exitz)
-	cmp	$1, %RDX_LP
-	je	LABEL(Byte0)
-	mov	%RDX_LP, %R11_LP
-#endif
-	mov	%esi, %ecx
-	mov	%edi, %eax
-/* Use 64bit AND here to avoid long NOP padding.  */
-	and	$0x3f, %rcx		/* rsi alignment in cache line */
-	and	$0x3f, %rax		/* rdi alignment in cache line */
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	.section .rodata.cst16,"aM",@progbits,16
-	.align 16
-LABEL(lcase_min):
-	.quad	0x3f3f3f3f3f3f3f3f
-	.quad	0x3f3f3f3f3f3f3f3f
-LABEL(lcase_max):
-	.quad	0x9999999999999999
-	.quad	0x9999999999999999
-LABEL(case_add):
-	.quad	0x2020202020202020
-	.quad	0x2020202020202020
-	.previous
-	movdqa	LABEL(lcase_min)(%rip), %xmm4
-# define LCASE_MIN_reg %xmm4
-	movdqa	LABEL(lcase_max)(%rip), %xmm5
-# define LCASE_MAX_reg %xmm5
-	movdqa	LABEL(case_add)(%rip), %xmm6
-# define CASE_ADD_reg %xmm6
-#endif
-	cmp	$0x30, %ecx
-	ja	LABEL(crosscache)/* rsi: 16-byte load will cross cache line */
-	cmp	$0x30, %eax
-	ja	LABEL(crosscache)/* rdi: 16-byte load will cross cache line */
-	movdqu	(%rdi), %xmm1
-	movdqu	(%rsi), %xmm2
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-# define TOLOWER(reg1, reg2) \
-	movdqa	LCASE_MIN_reg, %xmm7;					\
-	movdqa	LCASE_MIN_reg, %xmm8;					\
-	paddb	reg1, %xmm7;					\
-	paddb	reg2, %xmm8;					\
-	pcmpgtb	LCASE_MAX_reg, %xmm7;				\
-	pcmpgtb	LCASE_MAX_reg, %xmm8;				\
-	pandn	CASE_ADD_reg, %xmm7;					\
-	pandn	CASE_ADD_reg, %xmm8;					\
-	paddb	%xmm7, reg1;					\
-	paddb	%xmm8, reg2
-
-	TOLOWER (%xmm1, %xmm2)
-#else
-# define TOLOWER(reg1, reg2)
-#endif
-	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %edx
-	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
-	jnz	LABEL(less16bytes)/* If not, find different value or null char */
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)/* finish comparison */
-#endif
-	add	$16, %rsi		/* prepare to search next 16 bytes */
-	add	$16, %rdi		/* prepare to search next 16 bytes */
-
-	/*
-	 * Determine source and destination string offsets from 16-byte
-	 * alignment.  Use relative offset difference between the two to
-	 * determine which case below to use.
-	 */
-	.p2align 4
-LABEL(crosscache):
-	and	$0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
-	and	$0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
-	mov	$0xffff, %edx		/* for equivalent offset */
-	xor	%r8d, %r8d
-	and	$0xf, %ecx		/* offset of rsi */
-	and	$0xf, %eax		/* offset of rdi */
-	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char check */
-	cmp	%eax, %ecx
-	je	LABEL(ashr_0)		/* rsi and rdi relative offset same */
-	ja	LABEL(bigger)
-	mov	%edx, %r8d		/* r8d is offset flag for exit tail */
-	xchg	%ecx, %eax
-	xchg	%rsi, %rdi
-LABEL(bigger):
-	movdqa	(%rdi), %xmm2
-	movdqa	(%rsi), %xmm1
-	lea	15(%rax), %r9
-	sub	%rcx, %r9
-	lea	LABEL(unaligned_table)(%rip), %r10
-	movslq	(%r10, %r9,4), %r9
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-	lea	(%r10, %r9), %r10
-	_CET_NOTRACK jmp *%r10		/* jump to corresponding case */
-
-/*
- * The following cases will be handled by ashr_0
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
- *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
- */
-	.p2align 4
-LABEL(ashr_0):
-
-	movdqa	(%rsi), %xmm1
-	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpeqb	(%rdi), %xmm1		/* compare 16 bytes for equality */
-#else
-	movdqa	(%rdi), %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm2, %xmm1		/* compare 16 bytes for equality */
-#endif
-	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
-	pmovmskb %xmm1, %r9d
-	shr	%cl, %edx		/* adjust 0xffff for offset */
-	shr	%cl, %r9d		/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	/*
-	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
-	 * the start from (16-rax) and no null char was seen.
-	 */
-	jne	LABEL(less32bytes)	/* mismatch or null char */
-	UPDATE_STRNCMP_COUNTER
-	mov	$16, %rcx
-	mov	$16, %r9
-
-	/*
-	 * Now both strings are aligned at 16-byte boundary. Loop over strings
-	 * checking 32-bytes per iteration.
-	 */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-	.p2align 4
-LABEL(ashr_0_use):
-	movdqa	(%rdi,%rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	lea	16(%rdx), %rdx
-	jbe	LABEL(ashr_0_exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	movdqa	(%rdi,%rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	lea	16(%rdx), %rdx
-	jbe	LABEL(ashr_0_exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	jmp	LABEL(ashr_0_use)
-
-
-	.p2align 4
-LABEL(ashr_0_exit_use):
-	jnc	LABEL(strcmp_exitz)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	%rcx, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	lea	-16(%rdx, %rcx), %rcx
-	movzbl	(%rdi, %rcx), %eax
-	movzbl	(%rsi, %rcx), %edx
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
-	movl	(%rcx,%rax,4), %eax
-	movl	(%rcx,%rdx,4), %edx
-#endif
-	sub	%edx, %eax
-	ret
-
-
-
-/*
- * The following cases will be handled by ashr_1
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
- *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
- */
-	.p2align 4
-LABEL(ashr_1):
-	pslldq	$15, %xmm2		/* shift first string to align with second */
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
-	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx		/* adjust 0xffff for offset */
-	shr	%cl, %r9d		/* adjust for 16-byte offset */
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx		/* index for loads*/
-	mov	$1, %r9d		/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	1(%rdi), %r10
-	and	$0xfff, %r10		/* offset into 4K page */
-	sub	$0x1000, %r10		/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_1_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1_use)
-
-LABEL(nibble_ashr_1_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $1, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_1_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $1, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_1_use)
-
-	.p2align 4
-LABEL(nibble_ashr_1_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$1, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$14, %ecx
-	ja	LABEL(nibble_ashr_1_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_2
- * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
- *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
- */
-	.p2align 4
-LABEL(ashr_2):
-	pslldq	$14, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$2, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	2(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_2_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2_use)
-
-LABEL(nibble_ashr_2_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $2, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_2_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $2, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_2_use)
-
-	.p2align 4
-LABEL(nibble_ashr_2_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$2, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$13, %ecx
-	ja	LABEL(nibble_ashr_2_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_3
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
- */
-	.p2align 4
-LABEL(ashr_3):
-	pslldq	$13, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$3, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	3(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-LABEL(loop_ashr_3_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3_use)
-
-LABEL(nibble_ashr_3_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $3, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_3_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $3, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_3_use)
-
-	.p2align 4
-LABEL(nibble_ashr_3_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$3, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$12, %ecx
-	ja	LABEL(nibble_ashr_3_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_4
- *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
- *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
- */
-	.p2align 4
-LABEL(ashr_4):
-	pslldq	$12, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$4, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	4(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_4_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4_use)
-
-LABEL(nibble_ashr_4_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $4, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_4_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $4, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_4_use)
-
-	.p2align 4
-LABEL(nibble_ashr_4_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$4, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$11, %ecx
-	ja	LABEL(nibble_ashr_4_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_5
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
- */
-	.p2align 4
-LABEL(ashr_5):
-	pslldq	$11, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$5, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	5(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_5_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5_use)
-
-LABEL(nibble_ashr_5_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $5, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_5_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-
-	palignr $5, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_5_use)
-
-	.p2align 4
-LABEL(nibble_ashr_5_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$5, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$10, %ecx
-	ja	LABEL(nibble_ashr_5_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_6
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
- */
-	.p2align 4
-LABEL(ashr_6):
-	pslldq	$10, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$6, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	6(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_6_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6_use)
-
-LABEL(nibble_ashr_6_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $6, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_6_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $6, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_6_use)
-
-	.p2align 4
-LABEL(nibble_ashr_6_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$6, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$9, %ecx
-	ja	LABEL(nibble_ashr_6_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- * The following cases will be handled by ashr_7
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
- *        n(9~15)          n - 9		  6(15 +(n - 9) - n)         ashr_7
- */
-	.p2align 4
-LABEL(ashr_7):
-	pslldq	$9, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$7, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	7(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_7_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7_use)
-
-LABEL(nibble_ashr_7_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $7, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_7_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $7, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_7_use)
-
-	.p2align 4
-LABEL(nibble_ashr_7_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$7, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$8, %ecx
-	ja	LABEL(nibble_ashr_7_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_8
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(8~15)          n - 8		  7(15 +(n - 8) - n)         ashr_8
- */
-	.p2align 4
-LABEL(ashr_8):
-	pslldq	$8, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$8, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	8(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_8_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8_use)
-
-LABEL(nibble_ashr_8_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $8, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_8_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $8, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_8_use)
-
-	.p2align 4
-LABEL(nibble_ashr_8_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$8, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$7, %ecx
-	ja	LABEL(nibble_ashr_8_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_9
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(7~15)          n - 7		  8(15 +(n - 7) - n)         ashr_9
- */
-	.p2align 4
-LABEL(ashr_9):
-	pslldq	$7, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$9, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	9(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_9_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9_use)
-
-LABEL(nibble_ashr_9_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-
-	palignr $9, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_9_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $9, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_9_use)
-
-	.p2align 4
-LABEL(nibble_ashr_9_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$9, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$6, %ecx
-	ja	LABEL(nibble_ashr_9_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_10
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(6~15)          n - 6		  9(15 +(n - 6) - n)         ashr_10
- */
-	.p2align 4
-LABEL(ashr_10):
-	pslldq	$6, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$10, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	10(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_10_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10_use)
-
-LABEL(nibble_ashr_10_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $10, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_10_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $10, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_10_use)
-
-	.p2align 4
-LABEL(nibble_ashr_10_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$10, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$5, %ecx
-	ja	LABEL(nibble_ashr_10_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_11
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(5~15)          n - 5		  10(15 +(n - 5) - n)         ashr_11
- */
-	.p2align 4
-LABEL(ashr_11):
-	pslldq	$5, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$11, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	11(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_11_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11_use)
-
-LABEL(nibble_ashr_11_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $11, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_11_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $11, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_11_use)
-
-	.p2align 4
-LABEL(nibble_ashr_11_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$11, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$4, %ecx
-	ja	LABEL(nibble_ashr_11_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_12
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(4~15)          n - 4		  11(15 +(n - 4) - n)         ashr_12
- */
-	.p2align 4
-LABEL(ashr_12):
-	pslldq	$4, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$12, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	12(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_12_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12_use)
-
-LABEL(nibble_ashr_12_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $12, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_12_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $12, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_12_use)
-
-	.p2align 4
-LABEL(nibble_ashr_12_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$12, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$3, %ecx
-	ja	LABEL(nibble_ashr_12_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_13
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(3~15)          n - 3		  12(15 +(n - 3) - n)         ashr_13
- */
-	.p2align 4
-LABEL(ashr_13):
-	pslldq	$3, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$13, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	13(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_13_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13_use)
-
-LABEL(nibble_ashr_13_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $13, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_13_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $13, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_13_use)
-
-	.p2align 4
-LABEL(nibble_ashr_13_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$13, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$2, %ecx
-	ja	LABEL(nibble_ashr_13_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_14
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(2~15)          n - 2		  13(15 +(n - 2) - n)         ashr_14
- */
-	.p2align 4
-LABEL(ashr_14):
-	pslldq  $2, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$14, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	14(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_14_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14_use)
-
-LABEL(nibble_ashr_14_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $14, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_14_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $14, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_14_use)
-
-	.p2align 4
-LABEL(nibble_ashr_14_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$14, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$1, %ecx
-	ja	LABEL(nibble_ashr_14_restart_use)
-
-	jmp	LABEL(nibble_ashr_exit_use)
-
-/*
- *  The following cases will be handled by ashr_15
- *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
- *        n(1~15)          n - 1		  14(15 +(n - 1) - n)         ashr_15
- */
-	.p2align 4
-LABEL(ashr_15):
-	pslldq	$1, %xmm2
-	TOLOWER (%xmm1, %xmm2)
-	pcmpeqb	%xmm1, %xmm2
-	psubb	%xmm0, %xmm2
-	pmovmskb %xmm2, %r9d
-	shr	%cl, %edx
-	shr	%cl, %r9d
-	sub	%r9d, %edx
-	jnz	LABEL(less32bytes)
-
-	movdqa	(%rdi), %xmm3
-
-	UPDATE_STRNCMP_COUNTER
-
-	mov	$16, %rcx	/* index for loads */
-	mov	$15, %r9d	/* byte position left over from less32bytes case */
-	/*
-	 * Setup %r10 value allows us to detect crossing a page boundary.
-	 * When %r10 goes positive we have crossed a page boundary and
-	 * need to do a nibble.
-	 */
-	lea	15(%rdi), %r10
-	and	$0xfff, %r10	/* offset into 4K page */
-
-	sub	$0x1000, %r10	/* subtract 4K pagesize */
-
-	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
-
-	.p2align 4
-LABEL(loop_ashr_15_use):
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15_use)
-
-LABEL(nibble_ashr_15_restart_use):
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $15, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-
-	add	$16, %rdx
-	add	$16, %r10
-	jg	LABEL(nibble_ashr_15_use)
-
-	movdqa	(%rdi, %rdx), %xmm0
-	palignr $15, -16(%rdi, %rdx), %xmm0
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	jbe	LABEL(exit_use)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	$16, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	$16, %rdx
-	jmp	LABEL(loop_ashr_15_use)
-
-	.p2align 4
-LABEL(nibble_ashr_15_use):
-	sub	$0x1000, %r10
-	movdqa	-16(%rdi, %rdx), %xmm0
-	psrldq	$15, %xmm0
-	pcmpistri      $0x3a,%xmm0, %xmm0
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	cmp	%r11, %rcx
-	jae	LABEL(nibble_ashr_exit_use)
-#endif
-	cmp	$0, %ecx
-	ja	LABEL(nibble_ashr_15_restart_use)
-
-LABEL(nibble_ashr_exit_use):
-#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
-	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
-#else
-	movdqa	(%rsi,%rdx), %xmm1
-	TOLOWER (%xmm0, %xmm1)
-	pcmpistri $0x1a, %xmm1, %xmm0
-#endif
-	.p2align 4
-LABEL(exit_use):
-	jnc	LABEL(strcmp_exitz)
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	%rcx, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	add	%rcx, %rdx
-	lea	-16(%rdi, %r9), %rdi
-	movzbl	(%rdi, %rdx), %eax
-	movzbl	(%rsi, %rdx), %edx
-	test	%r8d, %r8d
-	jz	LABEL(ret_use)
-	xchg	%eax, %edx
-LABEL(ret_use):
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
-	movl	(%rcx,%rdx,4), %edx
-	movl	(%rcx,%rax,4), %eax
-#endif
-
-	sub	%edx, %eax
-	ret
-
-LABEL(less32bytes):
-	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
-	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
-	test	%r8d, %r8d
-	jz	LABEL(ret)
-	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
-
-	.p2align 4
-LABEL(ret):
-LABEL(less16bytes):
-	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
-
-#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
-	sub	%rdx, %r11
-	jbe	LABEL(strcmp_exitz)
-#endif
-	movzbl	(%rsi, %rdx), %ecx
-	movzbl	(%rdi, %rdx), %eax
-
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-#endif
-
-	sub	%ecx, %eax
-	ret
-
-LABEL(strcmp_exitz):
-	xor	%eax, %eax
-	ret
-
-	.p2align 4
-	// XXX Same as code above
-LABEL(Byte0):
-	movzbl	(%rsi), %ecx
-	movzbl	(%rdi), %eax
-
-#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
-	movl	(%rdx,%rcx,4), %ecx
-	movl	(%rdx,%rax,4), %eax
-#endif
-
-	sub	%ecx, %eax
-	ret
-	cfi_endproc
-	.size	STRCMP_SSE42, .-STRCMP_SSE42
-
-#undef UCLOW_reg
-#undef UCHIGH_reg
-#undef LCQWORD_reg
-#undef TOLOWER
-
-	/* Put all SSE 4.2 functions together.  */
-	.section .rodata.SECTION,"a",@progbits
-	.p2align 3
-LABEL(unaligned_table):
-	.int	LABEL(ashr_1) - LABEL(unaligned_table)
-	.int	LABEL(ashr_2) - LABEL(unaligned_table)
-	.int	LABEL(ashr_3) - LABEL(unaligned_table)
-	.int	LABEL(ashr_4) - LABEL(unaligned_table)
-	.int	LABEL(ashr_5) - LABEL(unaligned_table)
-	.int	LABEL(ashr_6) - LABEL(unaligned_table)
-	.int	LABEL(ashr_7) - LABEL(unaligned_table)
-	.int	LABEL(ashr_8) - LABEL(unaligned_table)
-	.int	LABEL(ashr_9) - LABEL(unaligned_table)
-	.int	LABEL(ashr_10) - LABEL(unaligned_table)
-	.int	LABEL(ashr_11) - LABEL(unaligned_table)
-	.int	LABEL(ashr_12) - LABEL(unaligned_table)
-	.int	LABEL(ashr_13) - LABEL(unaligned_table)
-	.int	LABEL(ashr_14) - LABEL(unaligned_table)
-	.int	LABEL(ashr_15) - LABEL(unaligned_table)
-	.int	LABEL(ashr_0) - LABEL(unaligned_table)
-
-#undef LABEL
-#undef GLABEL
-#undef SECTION
-#undef movdqa
-#undef movdqu
-#undef pmovmskb
-#undef pcmpistri
-#undef psubb
-#undef pcmpeqb
-#undef psrldq
-#undef pslldq
-#undef palignr
-#undef pxor
-#undef D
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
index 2c916bafa0..963e208ccb 100644
--- a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
+++ b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
@@ -17,5 +17,1766 @@
    <https://www.gnu.org/licenses/>.  */
 
 #if IS_IN (libc)
-# include "strcmp-sse42.S"
+# include <sysdep.h>
+
+# define STRCMP_ISA	_sse42
+# include "strcmp-naming.h"
+
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+#  include "locale-defines.h"
+# endif
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
+   if the new counter > the old one or is 0.  */
+#  define UPDATE_STRNCMP_COUNTER				\
+	/* calculate left number to compare */		\
+	lea	-16(%rcx, %r11), %r9;			\
+	cmp	%r9, %r11;				\
+	jb	LABEL(strcmp_exitz);			\
+	test	%r9, %r9;				\
+	je	LABEL(strcmp_exitz);			\
+	mov	%r9, %r11
+# else
+#  define UPDATE_STRNCMP_COUNTER
+# endif
+
+# define SECTION	sse4.2
+
+# define LABEL(l)	.L##l
+
+/* We use 0x1a:
+	_SIDD_SBYTE_OPS
+	| _SIDD_CMP_EQUAL_EACH
+	| _SIDD_NEGATIVE_POLARITY
+	| _SIDD_LEAST_SIGNIFICANT
+   on pcmpistri to find out if two 16byte data elements are the same
+   and the offset of the first different byte.  There are 4 cases:
+
+   1. Both 16byte data elements are valid and identical.
+   2. Both 16byte data elements have EOS and identical.
+   3. Both 16byte data elements are valid and they differ at offset X.
+   4. At least one 16byte data element has EOS at offset X.  Two 16byte
+      data elements must differ at or before offset X.
+
+   Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
+
+   case		ECX	CFlag	ZFlag	SFlag
+    1		16	  0	  0	  0
+    2		16	  0	  1	  1
+    3		 X	  1	  0	  0
+    4	       0 <= X	  1	 0/1	 0/1
+
+   We exit from the loop for cases 2, 3 and 4 with jbe which branches
+   when either CFlag or ZFlag is 1.  If CFlag == 0, we return 0 for
+   case 2.  */
+
+	/* Put all SSE 4.2 functions together.  */
+	.section .text.SECTION,"ax",@progbits
+	.align	16
+	.type	STRCMP, @function
+	.globl	STRCMP
+# ifdef USE_AS_STRCASECMP_L
+ENTRY (STRCASECMP)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RDX_LP
+
+	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
+	.p2align 4
+END (STRCASECMP)
+	/* FALLTHROUGH to strcasecmp_l.  */
+# endif
+# ifdef USE_AS_STRNCASECMP_L
+ENTRY (STRCASECMP)
+	movq	__libc_tsd_LOCALE@gottpoff(%rip),%rax
+	mov	%fs:(%rax),%RCX_LP
+
+	/* Either 1 or 5 bytes (dependeing if CET is enabled).  */
+	.p2align 4
+END (STRCASECMP)
+	/* FALLTHROUGH to strncasecmp_l.  */
+# endif
+
+
+# define arg arg
+
+STRCMP:
+	cfi_startproc
+	_CET_ENDBR
+	CALL_MCOUNT
+
+/*
+ * This implementation uses SSE to compare up to 16 bytes at a time.
+ */
+# ifdef USE_AS_STRCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
+#  else
+	mov	(%rdx), %RAX_LP
+#  endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strcasecmp_l_nonascii
+# endif
+# ifdef USE_AS_STRNCASECMP_L
+	/* We have to fall back on the C implementation for locales
+	   with encodings not matching ASCII for single bytes.  */
+#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+	mov	LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
+#  else
+	mov	(%rcx), %RAX_LP
+#  endif
+	testl	$1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+	jne	__strncasecmp_l_nonascii
+# endif
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	test	%RDX_LP, %RDX_LP
+	je	LABEL(strcmp_exitz)
+	cmp	$1, %RDX_LP
+	je	LABEL(Byte0)
+	mov	%RDX_LP, %R11_LP
+# endif
+	mov	%esi, %ecx
+	mov	%edi, %eax
+/* Use 64bit AND here to avoid long NOP padding.  */
+	and	$0x3f, %rcx		/* rsi alignment in cache line */
+	and	$0x3f, %rax		/* rdi alignment in cache line */
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	.section .rodata.cst16,"aM",@progbits,16
+	.align 16
+LABEL(lcase_min):
+	.quad	0x3f3f3f3f3f3f3f3f
+	.quad	0x3f3f3f3f3f3f3f3f
+LABEL(lcase_max):
+	.quad	0x9999999999999999
+	.quad	0x9999999999999999
+LABEL(case_add):
+	.quad	0x2020202020202020
+	.quad	0x2020202020202020
+	.previous
+	movdqa	LABEL(lcase_min)(%rip), %xmm4
+#  define LCASE_MIN_reg %xmm4
+	movdqa	LABEL(lcase_max)(%rip), %xmm5
+#  define LCASE_MAX_reg %xmm5
+	movdqa	LABEL(case_add)(%rip), %xmm6
+#  define CASE_ADD_reg %xmm6
+# endif
+	cmp	$0x30, %ecx
+	ja	LABEL(crosscache)/* rsi: 16-byte load will cross cache line */
+	cmp	$0x30, %eax
+	ja	LABEL(crosscache)/* rdi: 16-byte load will cross cache line */
+	movdqu	(%rdi), %xmm1
+	movdqu	(%rsi), %xmm2
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+#  define TOLOWER(reg1, reg2) \
+	movdqa	LCASE_MIN_reg, %xmm7;					\
+	movdqa	LCASE_MIN_reg, %xmm8;					\
+	paddb	reg1, %xmm7;					\
+	paddb	reg2, %xmm8;					\
+	pcmpgtb	LCASE_MAX_reg, %xmm7;				\
+	pcmpgtb	LCASE_MAX_reg, %xmm8;				\
+	pandn	CASE_ADD_reg, %xmm7;					\
+	pandn	CASE_ADD_reg, %xmm8;					\
+	paddb	%xmm7, reg1;					\
+	paddb	%xmm8, reg2
+
+	TOLOWER (%xmm1, %xmm2)
+# else
+#  define TOLOWER(reg1, reg2)
+# endif
+	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char checks */
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	pcmpeqb	%xmm2, %xmm1		/* compare first 16 bytes for equality */
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %edx
+	sub	$0xffff, %edx		/* if first 16 bytes are same, edx == 0xffff */
+	jnz	LABEL(less16bytes)/* If not, find different value or null char */
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)/* finish comparison */
+# endif
+	add	$16, %rsi		/* prepare to search next 16 bytes */
+	add	$16, %rdi		/* prepare to search next 16 bytes */
+
+	/*
+	 * Determine source and destination string offsets from 16-byte
+	 * alignment.  Use relative offset difference between the two to
+	 * determine which case below to use.
+	 */
+	.p2align 4
+LABEL(crosscache):
+	and	$0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
+	and	$0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
+	mov	$0xffff, %edx		/* for equivalent offset */
+	xor	%r8d, %r8d
+	and	$0xf, %ecx		/* offset of rsi */
+	and	$0xf, %eax		/* offset of rdi */
+	pxor	%xmm0, %xmm0		/* clear %xmm0 for null char check */
+	cmp	%eax, %ecx
+	je	LABEL(ashr_0)		/* rsi and rdi relative offset same */
+	ja	LABEL(bigger)
+	mov	%edx, %r8d		/* r8d is offset flag for exit tail */
+	xchg	%ecx, %eax
+	xchg	%rsi, %rdi
+LABEL(bigger):
+	movdqa	(%rdi), %xmm2
+	movdqa	(%rsi), %xmm1
+	lea	15(%rax), %r9
+	sub	%rcx, %r9
+	lea	LABEL(unaligned_table)(%rip), %r10
+	movslq	(%r10, %r9,4), %r9
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+	lea	(%r10, %r9), %r10
+	_CET_NOTRACK jmp *%r10		/* jump to corresponding case */
+
+/*
+ * The following cases will be handled by ashr_0
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
+ *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
+ */
+	.p2align 4
+LABEL(ashr_0):
+
+	movdqa	(%rsi), %xmm1
+	pcmpeqb	%xmm1, %xmm0		/* Any null chars? */
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpeqb	(%rdi), %xmm1		/* compare 16 bytes for equality */
+# else
+	movdqa	(%rdi), %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm2, %xmm1		/* compare 16 bytes for equality */
+# endif
+	psubb	%xmm0, %xmm1		/* packed sub of comparison results*/
+	pmovmskb %xmm1, %r9d
+	shr	%cl, %edx		/* adjust 0xffff for offset */
+	shr	%cl, %r9d		/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	/*
+	 * edx must be the same with r9d if in left byte (16-rcx) is equal to
+	 * the start from (16-rax) and no null char was seen.
+	 */
+	jne	LABEL(less32bytes)	/* mismatch or null char */
+	UPDATE_STRNCMP_COUNTER
+	mov	$16, %rcx
+	mov	$16, %r9
+
+	/*
+	 * Now both strings are aligned at 16-byte boundary. Loop over strings
+	 * checking 32-bytes per iteration.
+	 */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+	.p2align 4
+LABEL(ashr_0_use):
+	movdqa	(%rdi,%rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	lea	16(%rdx), %rdx
+	jbe	LABEL(ashr_0_exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	movdqa	(%rdi,%rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	lea	16(%rdx), %rdx
+	jbe	LABEL(ashr_0_exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	jmp	LABEL(ashr_0_use)
+
+
+	.p2align 4
+LABEL(ashr_0_exit_use):
+	jnc	LABEL(strcmp_exitz)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	%rcx, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	lea	-16(%rdx, %rcx), %rcx
+	movzbl	(%rdi, %rcx), %eax
+	movzbl	(%rsi, %rcx), %edx
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
+	movl	(%rcx,%rax,4), %eax
+	movl	(%rcx,%rdx,4), %edx
+# endif
+	sub	%edx, %eax
+	ret
+
+
+
+/*
+ * The following cases will be handled by ashr_1
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
+ *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
+ */
+	.p2align 4
+LABEL(ashr_1):
+	pslldq	$15, %xmm2		/* shift first string to align with second */
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2		/* compare 16 bytes for equality */
+	psubb	%xmm0, %xmm2		/* packed sub of comparison results*/
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx		/* adjust 0xffff for offset */
+	shr	%cl, %r9d		/* adjust for 16-byte offset */
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)	/* mismatch or null char seen */
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx		/* index for loads*/
+	mov	$1, %r9d		/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	1(%rdi), %r10
+	and	$0xfff, %r10		/* offset into 4K page */
+	sub	$0x1000, %r10		/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_1_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1_use)
+
+LABEL(nibble_ashr_1_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $1, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_1_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $1, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_1_use)
+
+	.p2align 4
+LABEL(nibble_ashr_1_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$1, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$14, %ecx
+	ja	LABEL(nibble_ashr_1_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_2
+ * rcx(offset of rsi)  rax(offset of rdi)   relative offset	corresponding case
+ *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
+ */
+	.p2align 4
+LABEL(ashr_2):
+	pslldq	$14, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$2, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	2(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_2_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2_use)
+
+LABEL(nibble_ashr_2_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $2, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_2_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $2, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_2_use)
+
+	.p2align 4
+LABEL(nibble_ashr_2_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$2, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$13, %ecx
+	ja	LABEL(nibble_ashr_2_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_3
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
+ */
+	.p2align 4
+LABEL(ashr_3):
+	pslldq	$13, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$3, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	3(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+LABEL(loop_ashr_3_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3_use)
+
+LABEL(nibble_ashr_3_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $3, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_3_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $3, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_3_use)
+
+	.p2align 4
+LABEL(nibble_ashr_3_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$3, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$12, %ecx
+	ja	LABEL(nibble_ashr_3_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_4
+ *  rcx(offset of rsi)  rax(offset of rdi)  relative offset	 corresponding case
+ *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
+ */
+	.p2align 4
+LABEL(ashr_4):
+	pslldq	$12, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$4, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	4(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_4_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4_use)
+
+LABEL(nibble_ashr_4_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $4, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_4_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $4, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_4_use)
+
+	.p2align 4
+LABEL(nibble_ashr_4_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$4, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$11, %ecx
+	ja	LABEL(nibble_ashr_4_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_5
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(11~15)          n - 11		  4(15 +(n-11) - n)         ashr_5
+ */
+	.p2align 4
+LABEL(ashr_5):
+	pslldq	$11, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$5, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	5(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_5_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5_use)
+
+LABEL(nibble_ashr_5_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $5, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_5_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+
+	palignr $5, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_5_use)
+
+	.p2align 4
+LABEL(nibble_ashr_5_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$5, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$10, %ecx
+	ja	LABEL(nibble_ashr_5_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_6
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(10~15)          n - 10		  5(15 +(n-10) - n)         ashr_6
+ */
+	.p2align 4
+LABEL(ashr_6):
+	pslldq	$10, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$6, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	6(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_6_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6_use)
+
+LABEL(nibble_ashr_6_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $6, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_6_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $6, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_6_use)
+
+	.p2align 4
+LABEL(nibble_ashr_6_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$6, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$9, %ecx
+	ja	LABEL(nibble_ashr_6_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_7
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
+ *        n(9~15)          n - 9		  6(15 +(n - 9) - n)         ashr_7
+ */
+	.p2align 4
+LABEL(ashr_7):
+	pslldq	$9, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$7, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	7(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_7_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7_use)
+
+LABEL(nibble_ashr_7_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $7, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_7_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $7, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri	$0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_7_use)
+
+	.p2align 4
+LABEL(nibble_ashr_7_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$7, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$8, %ecx
+	ja	LABEL(nibble_ashr_7_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_8
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(8~15)          n - 8		  7(15 +(n - 8) - n)         ashr_8
+ */
+	.p2align 4
+LABEL(ashr_8):
+	pslldq	$8, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$8, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	8(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_8_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8_use)
+
+LABEL(nibble_ashr_8_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $8, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_8_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $8, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_8_use)
+
+	.p2align 4
+LABEL(nibble_ashr_8_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$8, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$7, %ecx
+	ja	LABEL(nibble_ashr_8_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_9
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(7~15)          n - 7		  8(15 +(n - 7) - n)         ashr_9
+ */
+	.p2align 4
+LABEL(ashr_9):
+	pslldq	$7, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$9, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	9(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_9_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9_use)
+
+LABEL(nibble_ashr_9_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+
+	palignr $9, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_9_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $9, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_9_use)
+
+	.p2align 4
+LABEL(nibble_ashr_9_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$9, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$6, %ecx
+	ja	LABEL(nibble_ashr_9_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_10
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(6~15)          n - 6		  9(15 +(n - 6) - n)         ashr_10
+ */
+	.p2align 4
+LABEL(ashr_10):
+	pslldq	$6, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$10, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	10(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_10_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10_use)
+
+LABEL(nibble_ashr_10_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $10, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_10_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $10, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_10_use)
+
+	.p2align 4
+LABEL(nibble_ashr_10_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$10, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$5, %ecx
+	ja	LABEL(nibble_ashr_10_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_11
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(5~15)          n - 5		  10(15 +(n - 5) - n)         ashr_11
+ */
+	.p2align 4
+LABEL(ashr_11):
+	pslldq	$5, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$11, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	11(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_11_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11_use)
+
+LABEL(nibble_ashr_11_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $11, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_11_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $11, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_11_use)
+
+	.p2align 4
+LABEL(nibble_ashr_11_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$11, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$4, %ecx
+	ja	LABEL(nibble_ashr_11_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_12
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(4~15)          n - 4		  11(15 +(n - 4) - n)         ashr_12
+ */
+	.p2align 4
+LABEL(ashr_12):
+	pslldq	$4, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$12, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	12(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_12_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12_use)
+
+LABEL(nibble_ashr_12_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $12, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_12_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $12, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_12_use)
+
+	.p2align 4
+LABEL(nibble_ashr_12_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$12, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$3, %ecx
+	ja	LABEL(nibble_ashr_12_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_13
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(3~15)          n - 3		  12(15 +(n - 3) - n)         ashr_13
+ */
+	.p2align 4
+LABEL(ashr_13):
+	pslldq	$3, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$13, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	13(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_13_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13_use)
+
+LABEL(nibble_ashr_13_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $13, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_13_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $13, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_13_use)
+
+	.p2align 4
+LABEL(nibble_ashr_13_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$13, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$2, %ecx
+	ja	LABEL(nibble_ashr_13_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_14
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(2~15)          n - 2		  13(15 +(n - 2) - n)         ashr_14
+ */
+	.p2align 4
+LABEL(ashr_14):
+	pslldq  $2, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$14, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	14(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_14_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14_use)
+
+LABEL(nibble_ashr_14_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $14, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_14_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $14, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_14_use)
+
+	.p2align 4
+LABEL(nibble_ashr_14_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$14, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$1, %ecx
+	ja	LABEL(nibble_ashr_14_restart_use)
+
+	jmp	LABEL(nibble_ashr_exit_use)
+
+/*
+ *  The following cases will be handled by ashr_15
+ *  rcx(offset of rsi)  rax(offset of rdi)        relative offset	 corresponding case
+ *        n(1~15)          n - 1		  14(15 +(n - 1) - n)         ashr_15
+ */
+	.p2align 4
+LABEL(ashr_15):
+	pslldq	$1, %xmm2
+	TOLOWER (%xmm1, %xmm2)
+	pcmpeqb	%xmm1, %xmm2
+	psubb	%xmm0, %xmm2
+	pmovmskb %xmm2, %r9d
+	shr	%cl, %edx
+	shr	%cl, %r9d
+	sub	%r9d, %edx
+	jnz	LABEL(less32bytes)
+
+	movdqa	(%rdi), %xmm3
+
+	UPDATE_STRNCMP_COUNTER
+
+	mov	$16, %rcx	/* index for loads */
+	mov	$15, %r9d	/* byte position left over from less32bytes case */
+	/*
+	 * Setup %r10 value allows us to detect crossing a page boundary.
+	 * When %r10 goes positive we have crossed a page boundary and
+	 * need to do a nibble.
+	 */
+	lea	15(%rdi), %r10
+	and	$0xfff, %r10	/* offset into 4K page */
+
+	sub	$0x1000, %r10	/* subtract 4K pagesize */
+
+	mov	%rcx, %rdx	/* only for offset of sse4 instruction loop*/
+
+	.p2align 4
+LABEL(loop_ashr_15_use):
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15_use)
+
+LABEL(nibble_ashr_15_restart_use):
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $15, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+
+	add	$16, %rdx
+	add	$16, %r10
+	jg	LABEL(nibble_ashr_15_use)
+
+	movdqa	(%rdi, %rdx), %xmm0
+	palignr $15, -16(%rdi, %rdx), %xmm0
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	jbe	LABEL(exit_use)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	$16, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	$16, %rdx
+	jmp	LABEL(loop_ashr_15_use)
+
+	.p2align 4
+LABEL(nibble_ashr_15_use):
+	sub	$0x1000, %r10
+	movdqa	-16(%rdi, %rdx), %xmm0
+	psrldq	$15, %xmm0
+	pcmpistri      $0x3a,%xmm0, %xmm0
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	cmp	%r11, %rcx
+	jae	LABEL(nibble_ashr_exit_use)
+# endif
+	cmp	$0, %ecx
+	ja	LABEL(nibble_ashr_15_restart_use)
+
+LABEL(nibble_ashr_exit_use):
+# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+	pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
+# else
+	movdqa	(%rsi,%rdx), %xmm1
+	TOLOWER (%xmm0, %xmm1)
+	pcmpistri $0x1a, %xmm1, %xmm0
+# endif
+	.p2align 4
+LABEL(exit_use):
+	jnc	LABEL(strcmp_exitz)
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	%rcx, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	add	%rcx, %rdx
+	lea	-16(%rdi, %r9), %rdi
+	movzbl	(%rdi, %rdx), %eax
+	movzbl	(%rsi, %rdx), %edx
+	test	%r8d, %r8d
+	jz	LABEL(ret_use)
+	xchg	%eax, %edx
+LABEL(ret_use):
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
+	movl	(%rcx,%rdx,4), %edx
+	movl	(%rcx,%rax,4), %eax
+# endif
+
+	sub	%edx, %eax
+	ret
+
+LABEL(less32bytes):
+	lea	(%rdi, %rax), %rdi	/* locate the exact address for first operand(rdi) */
+	lea	(%rsi, %rcx), %rsi	/* locate the exact address for second operand(rsi) */
+	test	%r8d, %r8d
+	jz	LABEL(ret)
+	xchg	%rsi, %rdi		/* recover original order according to flag(%r8d) */
+
+	.p2align 4
+LABEL(ret):
+LABEL(less16bytes):
+	bsf	%rdx, %rdx		/* find and store bit index in %rdx */
+
+# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+	sub	%rdx, %r11
+	jbe	LABEL(strcmp_exitz)
+# endif
+	movzbl	(%rsi, %rdx), %ecx
+	movzbl	(%rdi, %rdx), %eax
+
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+# endif
+
+	sub	%ecx, %eax
+	ret
+
+LABEL(strcmp_exitz):
+	xor	%eax, %eax
+	ret
+
+	.p2align 4
+	// XXX Same as code above
+LABEL(Byte0):
+	movzbl	(%rsi), %ecx
+	movzbl	(%rdi), %eax
+
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+	leaq	_nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+	movl	(%rdx,%rcx,4), %ecx
+	movl	(%rdx,%rax,4), %eax
+# endif
+
+	sub	%ecx, %eax
+	ret
+	cfi_endproc
+	.size	STRCMP, .-STRCMP
+
+# undef UCLOW_reg
+# undef UCHIGH_reg
+# undef LCQWORD_reg
+# undef TOLOWER
+
+	/* Put all SSE 4.2 functions together.  */
+	.section .rodata.SECTION,"a",@progbits
+	.p2align 3
+LABEL(unaligned_table):
+	.int	LABEL(ashr_1) - LABEL(unaligned_table)
+	.int	LABEL(ashr_2) - LABEL(unaligned_table)
+	.int	LABEL(ashr_3) - LABEL(unaligned_table)
+	.int	LABEL(ashr_4) - LABEL(unaligned_table)
+	.int	LABEL(ashr_5) - LABEL(unaligned_table)
+	.int	LABEL(ashr_6) - LABEL(unaligned_table)
+	.int	LABEL(ashr_7) - LABEL(unaligned_table)
+	.int	LABEL(ashr_8) - LABEL(unaligned_table)
+	.int	LABEL(ashr_9) - LABEL(unaligned_table)
+	.int	LABEL(ashr_10) - LABEL(unaligned_table)
+	.int	LABEL(ashr_11) - LABEL(unaligned_table)
+	.int	LABEL(ashr_12) - LABEL(unaligned_table)
+	.int	LABEL(ashr_13) - LABEL(unaligned_table)
+	.int	LABEL(ashr_14) - LABEL(unaligned_table)
+	.int	LABEL(ashr_15) - LABEL(unaligned_table)
+	.int	LABEL(ashr_0) - LABEL(unaligned_table)
+
+# undef LABEL
+# undef GLABEL
+# undef SECTION
+# undef movdqa
+# undef movdqu
+# undef pmovmskb
+# undef pcmpistri
+# undef psubb
+# undef pcmpeqb
+# undef psrldq
+# undef pslldq
+# undef palignr
+# undef pxor
+# undef D
 #endif
diff --git a/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S b/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
index 08e23548c3..1ce5c4e93f 100644
--- a/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
+++ b/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
@@ -16,6 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#define STRCMP_SSE42 __strncasecmp_l_sse42
 #define USE_AS_STRNCASECMP_L
-#include "strcmp-sse42.S"
+#include "strcmp-sse4_2.S"
diff --git a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
index 310a6dbe77..2a02f0c2a6 100644
--- a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
+++ b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
@@ -16,8 +16,5 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#if IS_IN (libc)
-# define STRCMP_SSE42 __strncmp_sse42
-# define USE_AS_STRNCMP
-# include "strcmp-sse42.S"
-#endif
+#define USE_AS_STRNCMP
+#include "strcmp-sse4_2.S"
-- 
2.34.1


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII
  2022-07-12 19:28 [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII Noah Goldstein
                   ` (2 preceding siblings ...)
  2022-07-12 19:28 ` [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S Noah Goldstein
@ 2022-07-12 23:30 ` H.J. Lu
  3 siblings, 0 replies; 8+ messages in thread
From: H.J. Lu @ 2022-07-12 23:30 UTC (permalink / raw)
  To: Noah Goldstein; +Cc: GNU C Library, Carlos O'Donell

On Tue, Jul 12, 2022 at 12:28 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> The previous macro name can be confusing given that both
> `__strcasecmp_l_nonascii` and `__strcasecmp_nonascii` are
> functions and we use the `_l` version.
> ---
>  sysdeps/x86_64/multiarch/strcmp-avx2.S | 6 +++---
>  sysdeps/x86_64/multiarch/strcmp-evex.S | 6 +++---
>  2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/sysdeps/x86_64/multiarch/strcmp-avx2.S b/sysdeps/x86_64/multiarch/strcmp-avx2.S
> index 516cde1145..3ab21e3a58 100644
> --- a/sysdeps/x86_64/multiarch/strcmp-avx2.S
> +++ b/sysdeps/x86_64/multiarch/strcmp-avx2.S
> @@ -89,12 +89,12 @@
>  #   define STRCASECMP  __strncasecmp_avx2
>  #   define LOCALE_REG  rcx
>  #   define LOCALE_REG_LP       RCX_LP
> -#   define STRCASECMP_NONASCII __strncasecmp_l_nonascii
> +#   define STRCASECMP_L_NONASCII       __strncasecmp_l_nonascii
>  #  else
>  #   define STRCASECMP  __strcasecmp_avx2
>  #   define LOCALE_REG  rdx
>  #   define LOCALE_REG_LP       RDX_LP
> -#   define STRCASECMP_NONASCII __strcasecmp_l_nonascii
> +#   define STRCASECMP_L_NONASCII       __strcasecmp_l_nonascii
>  #  endif
>  # endif
>
> @@ -215,7 +215,7 @@ STRCMP:
>         mov     (%LOCALE_REG), %RAX_LP
>  #  endif
>         testl   $1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
> -       jne     STRCASECMP_NONASCII
> +       jne     STRCASECMP_L_NONASCII
>         leaq    _nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
>  # endif
>
> diff --git a/sysdeps/x86_64/multiarch/strcmp-evex.S b/sysdeps/x86_64/multiarch/strcmp-evex.S
> index e97d51bb26..afbf13a230 100644
> --- a/sysdeps/x86_64/multiarch/strcmp-evex.S
> +++ b/sysdeps/x86_64/multiarch/strcmp-evex.S
> @@ -123,12 +123,12 @@
>  #   define STRCASECMP  __strncasecmp_evex
>  #   define LOCALE_REG  rcx
>  #   define LOCALE_REG_LP       RCX_LP
> -#   define STRCASECMP_NONASCII __strncasecmp_l_nonascii
> +#   define STRCASECMP_L_NONASCII       __strncasecmp_l_nonascii
>  #  else
>  #   define STRCASECMP  __strcasecmp_evex
>  #   define LOCALE_REG  rdx
>  #   define LOCALE_REG_LP       RDX_LP
> -#   define STRCASECMP_NONASCII __strcasecmp_l_nonascii
> +#   define STRCASECMP_L_NONASCII       __strcasecmp_l_nonascii
>  #  endif
>  # endif
>
> @@ -241,7 +241,7 @@ STRCMP:
>         mov     (%LOCALE_REG), %RAX_LP
>  #  endif
>         testl   $1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
> -       jne     STRCASECMP_NONASCII
> +       jne     STRCASECMP_L_NONASCII
>         leaq    _nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
>  # endif
>
> --
> 2.34.1
>

LGTM.

Thanks.

-- 
H.J.

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S
  2022-07-12 19:28 ` [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S Noah Goldstein
@ 2022-07-12 23:57   ` H.J. Lu
  0 siblings, 0 replies; 8+ messages in thread
From: H.J. Lu @ 2022-07-12 23:57 UTC (permalink / raw)
  To: Noah Goldstein; +Cc: GNU C Library, Carlos O'Donell

On Tue, Jul 12, 2022 at 12:28 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> This commit doesn't affect libc.so.6, its just housekeeping to prepare
> for adding explicit ISA level support.
>
> Because strcmp-sse2.S implements so many functions (more from
> avx2/evex/sse42) add a new file 'strcmp-naming.h' to assist in
> getting the correct symbol name for all the function across
> multiarch/non-multiarch builds.
>
> Tested build on x86_64 and x86_32 with/without multiarch.
> ---
>  sysdeps/x86_64/multiarch/rtld-strcmp.S       |   18 +
>  sysdeps/x86_64/multiarch/rtld-strncmp.S      |   18 +
>  sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S |    5 +-
>  sysdeps/x86_64/multiarch/strcmp-naming.h     |   68 +
>  sysdeps/x86_64/multiarch/strcmp-sse2.S       | 2140 ++++++++++++++++-
>  sysdeps/x86_64/multiarch/strncase_l-sse2.S   |    5 +-
>  sysdeps/x86_64/multiarch/strncmp-sse2.S      |   12 +-
>  sysdeps/x86_64/strcasecmp_l.S                |   11 +-
>  sysdeps/x86_64/strcmp.S                      | 2147 +-----------------
>  sysdeps/x86_64/strncase_l.S                  |   11 +-
>  sysdeps/x86_64/strncmp.S                     |    7 +-
>  11 files changed, 2264 insertions(+), 2178 deletions(-)
>  create mode 100644 sysdeps/x86_64/multiarch/rtld-strcmp.S
>  create mode 100644 sysdeps/x86_64/multiarch/rtld-strncmp.S
>  create mode 100644 sysdeps/x86_64/multiarch/strcmp-naming.h
>
> diff --git a/sysdeps/x86_64/multiarch/rtld-strcmp.S b/sysdeps/x86_64/multiarch/rtld-strcmp.S
> new file mode 100644
> index 0000000000..207078bdcc
> --- /dev/null
> +++ b/sysdeps/x86_64/multiarch/rtld-strcmp.S
> @@ -0,0 +1,18 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include "../strcmp.S"
> diff --git a/sysdeps/x86_64/multiarch/rtld-strncmp.S b/sysdeps/x86_64/multiarch/rtld-strncmp.S
> new file mode 100644
> index 0000000000..ac32150406
> --- /dev/null
> +++ b/sysdeps/x86_64/multiarch/rtld-strncmp.S
> @@ -0,0 +1,18 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include "../strncmp.S"
> diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S b/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
> index 2360d104dd..a2b5741399 100644
> --- a/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
> +++ b/sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S
> @@ -16,8 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#define STRCMP __strcasecmp_l_sse2
>  #define USE_AS_STRCASECMP_L
> -#define NO_NOLOCALE_ALIAS
> -#define __strcasecmp __strcasecmp_sse2
> -#include <sysdeps/x86_64/strcmp.S>
> +#include "strcmp-sse2.S"
> diff --git a/sysdeps/x86_64/multiarch/strcmp-naming.h b/sysdeps/x86_64/multiarch/strcmp-naming.h
> new file mode 100644
> index 0000000000..6a7529b6a4
> --- /dev/null
> +++ b/sysdeps/x86_64/multiarch/strcmp-naming.h
> @@ -0,0 +1,68 @@
> +#ifndef _STRCMP_NAMING_H_
> +#define _STRCMP_NAMING_H_
> +
> +/* Utility macros.  */
> +#define STRCMP_SUFFIX(x, y) x##y
> +#define STRCMP_NAME(x, y) STRCMP_SUFFIX (x, y)
> +
> +/* Setup base of all definitions.  */
> +#define STRNCASECMP_BASE __strncasecmp
> +#define STRCASECMP_BASE __strcasecmp
> +#define WCSCMP_BASE __wcscmp
> +
> +#if defined USE_MULTIARCH && IS_IN (libc)
> +# define WCSNCMP_BASE __wcsncmp
> +# define STRNCMP_BASE __strncmp
> +# define STRCMP_BASE __strcmp
> +
> +#else
> +/* Covers IS_IN (rtld) or non-multiarch build.  */
> +# define WCSNCMP_BASE wcsncmp
> +# define STRNCMP_BASE strncmp
> +# define STRCMP_BASE strcmp
> +
> +# undef STRCMP_ISA
> +# define STRCMP_ISA
> +#endif
> +
> +#if IS_IN (rtld) || defined USE_MULTIARCH
> +# define ISA_HIDDEN_JUMPTARGET(...) __VA_ARGS__
> +#else
> +# define ISA_HIDDEN_JUMPTARGET(...) HIDDEN_JUMPTARGET (__VA_ARGS__)
> +#endif
> +
> +/* Get correct symbol for OVERFLOW_STRCMP, STRCMP, and
> +   STRCASECMP.  */
> +#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +
> +# if defined USE_AS_WCSCMP || defined USE_AS_WCSNCMP
> +#  define OVERFLOW_STRCMP_SYM WCSCMP_BASE
> +#  define STRCMP_SYM WCSNCMP_BASE
> +# elif defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +#  define OVERFLOW_STRCMP_SYM STRCMP_NAME (STRCASECMP_BASE, _l)
> +#  define STRCMP_SYM STRCMP_NAME (STRNCASECMP_BASE, _l)
> +# else
> +#  define OVERFLOW_STRCMP_SYM STRCMP_BASE
> +#  define STRCMP_SYM STRNCMP_BASE
> +# endif
> +
> +# define STRCASECMP_SYM STRNCASECMP_BASE
> +# define OVERFLOW_STRCMP \
> +    ISA_HIDDEN_JUMPTARGET (STRCMP_NAME (OVERFLOW_STRCMP_SYM, STRCMP_ISA))
> +#else
> +# ifdef USE_AS_WCSCMP
> +#  define STRCMP_SYM WCSCMP_BASE
> +# elif defined USE_AS_STRCASECMP_L
> +#  define STRCMP_SYM STRCMP_NAME (STRCASECMP_BASE, _l)
> +# else
> +#  define STRCMP_SYM STRCMP_BASE
> +# endif
> +
> +# define STRCASECMP_SYM STRCASECMP_BASE
> +#endif
> +
> +#define STRCASECMP_L_NONASCII STRCMP_NAME (STRCASECMP_SYM, _l_nonascii)
> +#define STRCASECMP STRCMP_NAME (STRCASECMP_SYM, STRCMP_ISA)
> +#define STRCMP STRCMP_NAME (STRCMP_SYM, STRCMP_ISA)
> +
> +#endif
> diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2.S b/sysdeps/x86_64/multiarch/strcmp-sse2.S
> index b8f95e59cf..b1220231ab 100644
> --- a/sysdeps/x86_64/multiarch/strcmp-sse2.S
> +++ b/sysdeps/x86_64/multiarch/strcmp-sse2.S
> @@ -16,13 +16,2141 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#if IS_IN (libc)
> +#if IS_IN (libc) || IS_IN (rtld)
> +
> +# define STRCMP_ISA    _sse2
> +# include "strcmp-naming.h"
> +
>  # include <sysdep.h>
>
> -# define STRCMP __strcmp_sse2
> +# undef UPDATE_STRNCMP_COUNTER
>
> -# undef libc_hidden_builtin_def
> -# define libc_hidden_builtin_def(strcmp)
> -#endif
> +# ifndef LABEL
> +#  define LABEL(l) L(l)
> +# endif
> +
> +# ifdef USE_AS_STRNCMP
> +/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
> +   if the new counter > the old one or is 0.  */
> +#  define UPDATE_STRNCMP_COUNTER                               \
> +       /* calculate left number to compare */          \
> +       lea     -16(%rcx, %r11), %r9;                   \
> +       cmp     %r9, %r11;                              \
> +       jb      LABEL(strcmp_exitz);                    \
> +       test    %r9, %r9;                               \
> +       je      LABEL(strcmp_exitz);                    \
> +       mov     %r9, %r11
> +
> +# elif defined USE_AS_STRCASECMP_L
> +#  include "locale-defines.h"
> +
> +#  define UPDATE_STRNCMP_COUNTER
> +# elif defined USE_AS_STRNCASECMP_L
> +#  include "locale-defines.h"
> +
> +#  define UPDATE_STRNCMP_COUNTER                               \
> +       /* calculate left number to compare */          \
> +       lea     -16(%rcx, %r11), %r9;                   \
> +       cmp     %r9, %r11;                              \
> +       jb      LABEL(strcmp_exitz);                    \
> +       test    %r9, %r9;                               \
> +       je      LABEL(strcmp_exitz);                    \
> +       mov     %r9, %r11
> +# else
> +#  define UPDATE_STRNCMP_COUNTER
> +# endif
> +
> +       .text
> +# ifdef USE_AS_STRCASECMP_L
> +#  ifndef ENTRY2
> +#   define ENTRY2(name) ENTRY (name)
> +#   define END2(name) END (name)
> +#  endif
> +
> +ENTRY2 (STRCASECMP)
> +       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> +       mov     %fs:(%rax),%RDX_LP
> +
> +       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> +       .p2align 4
> +END2 (STRCASECMP)
> +       /* FALLTHROUGH to strcasecmp_l.  */
> +# elif defined USE_AS_STRNCASECMP_L
> +#  ifndef ENTRY2
> +#   define ENTRY2(name) ENTRY (name)
> +#   define END2(name) END (name)
> +#  endif
> +
> +ENTRY2 (STRCASECMP)
> +       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> +       mov     %fs:(%rax),%RCX_LP
> +
> +       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> +       .p2align 4
> +END2 (STRCASECMP)
> +       /* FALLTHROUGH to strncasecmp_l.  */
> +# endif
> +
> +ENTRY (STRCMP)
> +# ifdef USE_AS_STRCASECMP_L
> +       /* We have to fall back on the C implementation for locales
> +          with encodings not matching ASCII for single bytes.  */
> +#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> +       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
> +#  else
> +       mov     (%rdx), %RAX_LP
> +#  endif
> +       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> +       jne     __strcasecmp_l_nonascii
> +# elif defined USE_AS_STRNCASECMP_L
> +       /* We have to fall back on the C implementation for locales
> +          with encodings not matching ASCII for single bytes.  */
> +#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> +       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
> +#  else
> +       mov     (%rcx), %RAX_LP
> +#  endif
> +       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> +       jne     __strncasecmp_l_nonascii
> +# endif
> +
> +/*
> + * This implementation uses SSE to compare up to 16 bytes at a time.
> + */
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       test    %RDX_LP, %RDX_LP
> +       je      LABEL(strcmp_exitz)
> +       cmp     $1, %RDX_LP
> +       je      LABEL(Byte0)
> +       mov     %RDX_LP, %R11_LP
> +# endif
> +       mov     %esi, %ecx
> +       mov     %edi, %eax
> +/* Use 64bit AND here to avoid long NOP padding.  */
> +       and     $0x3f, %rcx             /* rsi alignment in cache line */
> +       and     $0x3f, %rax             /* rdi alignment in cache line */
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       .section .rodata.cst16,"aM",@progbits,16
> +       .align 16
> +.Llcase_min:
> +       .quad   0x3f3f3f3f3f3f3f3f
> +       .quad   0x3f3f3f3f3f3f3f3f
> +.Llcase_max:
> +       .quad   0x9999999999999999
> +       .quad   0x9999999999999999
> +.Lcase_add:
> +       .quad   0x2020202020202020
> +       .quad   0x2020202020202020
> +       .previous
> +       movdqa  .Llcase_min(%rip), %xmm5
> +#  define LCASE_MIN_reg %xmm5
> +       movdqa  .Llcase_max(%rip), %xmm6
> +#  define LCASE_MAX_reg %xmm6
> +       movdqa  .Lcase_add(%rip), %xmm7
> +#  define CASE_ADD_reg %xmm7
> +# endif
> +       cmp     $0x30, %ecx
> +       ja      LABEL(crosscache)       /* rsi: 16-byte load will cross cache line */
> +       cmp     $0x30, %eax
> +       ja      LABEL(crosscache)       /* rdi: 16-byte load will cross cache line */
> +       movlpd  (%rdi), %xmm1
> +       movlpd  (%rsi), %xmm2
> +       movhpd  8(%rdi), %xmm1
> +       movhpd  8(%rsi), %xmm2
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +#   define TOLOWER(reg1, reg2) \
> +       movdqa  LCASE_MIN_reg, %xmm8;                                   \
> +       movdqa  LCASE_MIN_reg, %xmm9;                                   \
> +       paddb   reg1, %xmm8;                                    \
> +       paddb   reg2, %xmm9;                                    \
> +       pcmpgtb LCASE_MAX_reg, %xmm8;                           \
> +       pcmpgtb LCASE_MAX_reg, %xmm9;                           \
> +       pandn   CASE_ADD_reg, %xmm8;                                    \
> +       pandn   CASE_ADD_reg, %xmm9;                                    \
> +       paddb   %xmm8, reg1;                                    \
> +       paddb   %xmm9, reg2
> +       TOLOWER (%xmm1, %xmm2)
> +# else
> +#  define TOLOWER(reg1, reg2)
> +# endif
> +       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> +       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> +       pcmpeqb %xmm2, %xmm1            /* compare first 16 bytes for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 16 bytes are same, edx == 0xffff */
> +       jnz     LABEL(less16bytes)      /* If not, find different value or null char */
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)     /* finish comparision */
> +# endif
> +       add     $16, %rsi               /* prepare to search next 16 bytes */
> +       add     $16, %rdi               /* prepare to search next 16 bytes */
> +
> +       /*
> +        * Determine source and destination string offsets from 16-byte alignment.
> +        * Use relative offset difference between the two to determine which case
> +        * below to use.
> +        */
> +       .p2align 4
> +LABEL(crosscache):
> +       and     $0xfffffffffffffff0, %rsi       /* force %rsi is 16 byte aligned */
> +       and     $0xfffffffffffffff0, %rdi       /* force %rdi is 16 byte aligned */
> +       mov     $0xffff, %edx                   /* for equivalent offset */
> +       xor     %r8d, %r8d
> +       and     $0xf, %ecx                      /* offset of rsi */
> +       and     $0xf, %eax                      /* offset of rdi */
> +       cmp     %eax, %ecx
> +       je      LABEL(ashr_0)                   /* rsi and rdi relative offset same */
> +       ja      LABEL(bigger)
> +       mov     %edx, %r8d                      /* r8d is offset flag for exit tail */
> +       xchg    %ecx, %eax
> +       xchg    %rsi, %rdi
> +LABEL(bigger):
> +       lea     15(%rax), %r9
> +       sub     %rcx, %r9
> +       lea     LABEL(unaligned_table)(%rip), %r10
> +       movslq  (%r10, %r9,4), %r9
> +       lea     (%r10, %r9), %r10
> +       _CET_NOTRACK jmp *%r10                  /* jump to corresponding case */
> +
> +/*
> + * The following cases will be handled by ashr_0
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
> + *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
> + */
> +       .p2align 4
> +LABEL(ashr_0):
> +
> +       movdqa  (%rsi), %xmm1
> +       pxor    %xmm0, %xmm0                    /* clear %xmm0 for null char check */
> +       pcmpeqb %xmm1, %xmm0                    /* Any null chars? */
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpeqb (%rdi), %xmm1                   /* compare 16 bytes for equality */
> +# else
> +       movdqa  (%rdi), %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm2, %xmm1                    /* compare 16 bytes for equality */
> +# endif
> +       psubb   %xmm0, %xmm1                    /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %r9d
> +       shr     %cl, %edx                       /* adjust 0xffff for offset */
> +       shr     %cl, %r9d                       /* adjust for 16-byte offset */
> +       sub     %r9d, %edx
> +       /*
> +        * edx must be the same with r9d if in left byte (16-rcx) is equal to
> +        * the start from (16-rax) and no null char was seen.
> +        */
> +       jne     LABEL(less32bytes)              /* mismatch or null char */
> +       UPDATE_STRNCMP_COUNTER
> +       mov     $16, %rcx
> +       mov     $16, %r9
> +       pxor    %xmm0, %xmm0                    /* clear xmm0, may have changed above */
> +
> +       /*
> +        * Now both strings are aligned at 16-byte boundary. Loop over strings
> +        * checking 32-bytes per iteration.
> +        */
> +       .p2align 4
> +LABEL(loop_ashr_0):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)             /* mismatch or null char seen */
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rcx
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rcx
> +       jmp     LABEL(loop_ashr_0)
> +
> +/*
> + * The following cases will be handled by ashr_1
> + * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> + *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
> + */
> +       .p2align 4
> +LABEL(ashr_1):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> +       pslldq  $15, %xmm2              /* shift first string to align with second */
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2            /* compare 16 bytes for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx               /* adjust 0xffff for offset */
> +       shr     %cl, %r9d               /* adjust for 16-byte offset */
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)      /* mismatch or null char seen */
> +       movdqa  (%rdi), %xmm3
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx               /* index for loads*/
> +       mov     $1, %r9d                /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     1(%rdi), %r10
> +       and     $0xfff, %r10            /* offset into 4K page */
> +       sub     $0x1000, %r10           /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_1):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_1)    /* cross page boundary */
> +
> +LABEL(gobble_ashr_1):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4             /* store for next cycle */
> +
> +       psrldq  $1, %xmm3
> +       pslldq  $15, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_1)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4            /* store for next cycle */
> +
> +       psrldq  $1, %xmm3
> +       pslldq  $15, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_1)
> +
> +       /*
> +        * Nibble avoids loads across page boundary. This is to avoid a potential
> +        * access into unmapped memory.
> +        */
> +       .p2align 4
> +LABEL(nibble_ashr_1):
> +       pcmpeqb %xmm3, %xmm0             /* check nibble for null char*/
> +       pmovmskb %xmm0, %edx
> +       test    $0xfffe, %edx
> +       jnz     LABEL(ashr_1_exittail)  /* find null char*/
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $15, %r11
> +       jbe     LABEL(ashr_1_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10           /* substract 4K from %r10 */
> +       jmp     LABEL(gobble_ashr_1)
> +
> +       /*
> +        * Once find null char, determine if there is a string mismatch
> +        * before the null char.
> +        */
> +       .p2align 4
> +LABEL(ashr_1_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $1, %xmm0
> +       psrldq  $1, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_2
> + * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
> + *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
> + */
> +       .p2align 4
> +LABEL(ashr_2):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $14, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $2, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     2(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_2):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_2)
> +
> +LABEL(gobble_ashr_2):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $2, %xmm3
> +       pslldq  $14, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_2)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $2, %xmm3
> +       pslldq  $14, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_2)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_2):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xfffc, %edx
> +       jnz     LABEL(ashr_2_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $14, %r11
> +       jbe     LABEL(ashr_2_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_2)
> +
> +       .p2align 4
> +LABEL(ashr_2_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $2, %xmm0
> +       psrldq  $2, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_3
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> + *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
> + */
> +       .p2align 4
> +LABEL(ashr_3):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $13, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $3, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     3(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_3):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_3)
> +
> +LABEL(gobble_ashr_3):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $3, %xmm3
> +       pslldq  $13, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_3)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $3, %xmm3
> +       pslldq  $13, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_3)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_3):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xfff8, %edx
> +       jnz     LABEL(ashr_3_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $13, %r11
> +       jbe     LABEL(ashr_3_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_3)
> +
> +       .p2align 4
> +LABEL(ashr_3_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $3, %xmm0
> +       psrldq  $3, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_4
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> + *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
> + */
> +       .p2align 4
> +LABEL(ashr_4):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $12, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $4, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     4(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_4):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_4)
> +
> +LABEL(gobble_ashr_4):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $4, %xmm3
> +       pslldq  $12, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_4)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $4, %xmm3
> +       pslldq  $12, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_4)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_4):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xfff0, %edx
> +       jnz     LABEL(ashr_4_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $12, %r11
> +       jbe     LABEL(ashr_4_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_4)
> +
> +       .p2align 4
> +LABEL(ashr_4_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $4, %xmm0
> +       psrldq  $4, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_5
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(11~15)          n - 11               4(15 +(n-11) - n)         ashr_5
> + */
> +       .p2align 4
> +LABEL(ashr_5):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $11, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $5, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     5(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_5):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_5)
> +
> +LABEL(gobble_ashr_5):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $5, %xmm3
> +       pslldq  $11, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_5)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $5, %xmm3
> +       pslldq  $11, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_5)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_5):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xffe0, %edx
> +       jnz     LABEL(ashr_5_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $11, %r11
> +       jbe     LABEL(ashr_5_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_5)
> +
> +       .p2align 4
> +LABEL(ashr_5_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $5, %xmm0
> +       psrldq  $5, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_6
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(10~15)          n - 10               5(15 +(n-10) - n)         ashr_6
> + */
> +       .p2align 4
> +LABEL(ashr_6):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $10, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $6, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     6(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_6):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_6)
> +
> +LABEL(gobble_ashr_6):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $6, %xmm3
> +       pslldq  $10, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_6)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $6, %xmm3
> +       pslldq  $10, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_6)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_6):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xffc0, %edx
> +       jnz     LABEL(ashr_6_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $10, %r11
> +       jbe     LABEL(ashr_6_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_6)
> +
> +       .p2align 4
> +LABEL(ashr_6_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $6, %xmm0
> +       psrldq  $6, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + * The following cases will be handled by ashr_7
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
> + */
> +       .p2align 4
> +LABEL(ashr_7):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $9, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $7, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     7(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_7):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_7)
> +
> +LABEL(gobble_ashr_7):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $7, %xmm3
> +       pslldq  $9, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_7)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $7, %xmm3
> +       pslldq  $9, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_7)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_7):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xff80, %edx
> +       jnz     LABEL(ashr_7_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $9, %r11
> +       jbe     LABEL(ashr_7_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_7)
> +
> +       .p2align 4
> +LABEL(ashr_7_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $7, %xmm0
> +       psrldq  $7, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_8
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
> + */
> +       .p2align 4
> +LABEL(ashr_8):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $8, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $8, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     8(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_8):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_8)
> +
> +LABEL(gobble_ashr_8):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $8, %xmm3
> +       pslldq  $8, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
>
> -#include <sysdeps/x86_64/strcmp.S>
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_8)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $8, %xmm3
> +       pslldq  $8, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_8)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_8):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xff00, %edx
> +       jnz     LABEL(ashr_8_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $8, %r11
> +       jbe     LABEL(ashr_8_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_8)
> +
> +       .p2align 4
> +LABEL(ashr_8_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $8, %xmm0
> +       psrldq  $8, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_9
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
> + */
> +       .p2align 4
> +LABEL(ashr_9):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $7, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $9, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     9(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_9):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_9)
> +
> +LABEL(gobble_ashr_9):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $9, %xmm3
> +       pslldq  $7, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_9)    /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $9, %xmm3
> +       pslldq  $7, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3            /* store for next cycle */
> +       jmp     LABEL(loop_ashr_9)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_9):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xfe00, %edx
> +       jnz     LABEL(ashr_9_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $7, %r11
> +       jbe     LABEL(ashr_9_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_9)
> +
> +       .p2align 4
> +LABEL(ashr_9_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $9, %xmm0
> +       psrldq  $9, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_10
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
> + */
> +       .p2align 4
> +LABEL(ashr_10):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $6, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $10, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     10(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_10):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_10)
> +
> +LABEL(gobble_ashr_10):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $10, %xmm3
> +       pslldq  $6, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_10)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $10, %xmm3
> +       pslldq  $6, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_10)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_10):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xfc00, %edx
> +       jnz     LABEL(ashr_10_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $6, %r11
> +       jbe     LABEL(ashr_10_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_10)
> +
> +       .p2align 4
> +LABEL(ashr_10_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $10, %xmm0
> +       psrldq  $10, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_11
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
> + */
> +       .p2align 4
> +LABEL(ashr_11):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $5, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $11, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     11(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_11):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_11)
> +
> +LABEL(gobble_ashr_11):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $11, %xmm3
> +       pslldq  $5, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_11)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $11, %xmm3
> +       pslldq  $5, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_11)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_11):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xf800, %edx
> +       jnz     LABEL(ashr_11_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $5, %r11
> +       jbe     LABEL(ashr_11_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_11)
> +
> +       .p2align 4
> +LABEL(ashr_11_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $11, %xmm0
> +       psrldq  $11, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_12
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
> + */
> +       .p2align 4
> +LABEL(ashr_12):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $4, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $12, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     12(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_12):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_12)
> +
> +LABEL(gobble_ashr_12):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $12, %xmm3
> +       pslldq  $4, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_12)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $12, %xmm3
> +       pslldq  $4, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_12)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_12):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xf000, %edx
> +       jnz     LABEL(ashr_12_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $4, %r11
> +       jbe     LABEL(ashr_12_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_12)
> +
> +       .p2align 4
> +LABEL(ashr_12_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $12, %xmm0
> +       psrldq  $12, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_13
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
> + */
> +       .p2align 4
> +LABEL(ashr_13):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $3, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $13, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     13(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_13):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_13)
> +
> +LABEL(gobble_ashr_13):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $13, %xmm3
> +       pslldq  $3, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_13)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $13, %xmm3
> +       pslldq  $3, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_13)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_13):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xe000, %edx
> +       jnz     LABEL(ashr_13_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $3, %r11
> +       jbe     LABEL(ashr_13_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_13)
> +
> +       .p2align 4
> +LABEL(ashr_13_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $13, %xmm0
> +       psrldq  $13, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_14
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
> + */
> +       .p2align 4
> +LABEL(ashr_14):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $2, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $14, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     14(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_14):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_14)
> +
> +LABEL(gobble_ashr_14):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $14, %xmm3
> +       pslldq  $2, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_14)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $14, %xmm3
> +       pslldq  $2, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_14)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_14):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0xc000, %edx
> +       jnz     LABEL(ashr_14_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     $2, %r11
> +       jbe     LABEL(ashr_14_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_14)
> +
> +       .p2align 4
> +LABEL(ashr_14_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $14, %xmm0
> +       psrldq  $14, %xmm3
> +       jmp     LABEL(aftertail)
> +
> +/*
> + *  The following cases will be handled by ashr_15
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
> + */
> +       .p2align 4
> +LABEL(ashr_15):
> +       pxor    %xmm0, %xmm0
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0
> +       pslldq  $1, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       pxor    %xmm0, %xmm0
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $15, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     15(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       .p2align 4
> +LABEL(loop_ashr_15):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_15)
> +
> +LABEL(gobble_ashr_15):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $15, %xmm3
> +       pslldq  $1, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_15)   /* cross page boundary */
> +
> +       movdqa  (%rsi, %rcx), %xmm1
> +       movdqa  (%rdi, %rcx), %xmm2
> +       movdqa  %xmm2, %xmm4
> +
> +       psrldq  $15, %xmm3
> +       pslldq  $1, %xmm2
> +       por     %xmm3, %xmm2            /* merge into one 16byte value */
> +
> +       TOLOWER (%xmm1, %xmm2)
> +
> +       pcmpeqb %xmm1, %xmm0
> +       pcmpeqb %xmm2, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx
> +       jnz     LABEL(exit)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rcx
> +       movdqa  %xmm4, %xmm3
> +       jmp     LABEL(loop_ashr_15)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_15):
> +       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> +       pmovmskb %xmm0, %edx
> +       test    $0x8000, %edx
> +       jnz     LABEL(ashr_15_exittail)
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmpq    $1, %r11
> +       jbe     LABEL(ashr_15_exittail)
> +# endif
> +
> +       pxor    %xmm0, %xmm0
> +       sub     $0x1000, %r10
> +       jmp     LABEL(gobble_ashr_15)
> +
> +       .p2align 4
> +LABEL(ashr_15_exittail):
> +       movdqa  (%rsi, %rcx), %xmm1
> +       psrldq  $15, %xmm3
> +       psrldq  $15, %xmm0
> +
> +       .p2align 4
> +LABEL(aftertail):
> +       TOLOWER (%xmm1, %xmm3)
> +       pcmpeqb %xmm3, %xmm1
> +       psubb   %xmm0, %xmm1
> +       pmovmskb %xmm1, %edx
> +       not     %edx
> +
> +       .p2align 4
> +LABEL(exit):
> +       lea     -16(%r9, %rcx), %rax    /* locate the exact offset for rdi */
> +LABEL(less32bytes):
> +       lea     (%rdi, %rax), %rdi      /* locate the exact address for first operand(rdi) */
> +       lea     (%rsi, %rcx), %rsi      /* locate the exact address for second operand(rsi) */
> +       test    %r8d, %r8d
> +       jz      LABEL(ret)
> +       xchg    %rsi, %rdi              /* recover original order according to flag(%r8d) */
> +
> +       .p2align 4
> +LABEL(ret):
> +LABEL(less16bytes):
> +       bsf     %rdx, %rdx              /* find and store bit index in %rdx */
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     %rdx, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       movzbl  (%rsi, %rdx), %ecx
> +       movzbl  (%rdi, %rdx), %eax
> +
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> +       movl    (%rdx,%rcx,4), %ecx
> +       movl    (%rdx,%rax,4), %eax
> +# endif
> +
> +       sub     %ecx, %eax
> +       ret
> +
> +LABEL(strcmp_exitz):
> +       xor     %eax, %eax
> +       ret
> +
> +       .p2align 4
> +LABEL(Byte0):
> +       movzbl  (%rsi), %ecx
> +       movzbl  (%rdi), %eax
> +
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> +       movl    (%rdx,%rcx,4), %ecx
> +       movl    (%rdx,%rax,4), %eax
> +# endif
> +
> +       sub     %ecx, %eax
> +       ret
> +END (STRCMP)
> +
> +       .section .rodata,"a",@progbits
> +       .p2align 3
> +LABEL(unaligned_table):
> +       .int    LABEL(ashr_1) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_2) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_3) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_4) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_5) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_6) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_7) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_8) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_9) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_10) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_11) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_12) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_13) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_14) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_15) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_0) - LABEL(unaligned_table)
> +#endif
> diff --git a/sysdeps/x86_64/multiarch/strncase_l-sse2.S b/sysdeps/x86_64/multiarch/strncase_l-sse2.S
> index 0ca4c836b2..fd8ad07450 100644
> --- a/sysdeps/x86_64/multiarch/strncase_l-sse2.S
> +++ b/sysdeps/x86_64/multiarch/strncase_l-sse2.S
> @@ -16,8 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#define STRCMP __strncasecmp_l_sse2
> -#define NO_NOLOCALE_ALIAS
>  #define USE_AS_STRNCASECMP_L
> -#define __strncasecmp __strncasecmp_sse2
> -#include <sysdeps/x86_64/strcmp.S>
> +#include "strcmp-sse2.S"
> diff --git a/sysdeps/x86_64/multiarch/strncmp-sse2.S b/sysdeps/x86_64/multiarch/strncmp-sse2.S
> index e3ba94f926..2152b8dc3d 100644
> --- a/sysdeps/x86_64/multiarch/strncmp-sse2.S
> +++ b/sysdeps/x86_64/multiarch/strncmp-sse2.S
> @@ -16,15 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#include <sysdep.h>
> -
> -#if IS_IN (libc)
> -# define STRCMP __strncmp_sse2
> -# undef libc_hidden_builtin_def
> -# define libc_hidden_builtin_def(strcmp)
> -#else
> -# define STRCMP strncmp
> -#endif
> -
>  #define USE_AS_STRNCMP
> -#include <sysdeps/x86_64/strcmp.S>
> +#include "strcmp-sse2.S"
> diff --git a/sysdeps/x86_64/strcasecmp_l.S b/sysdeps/x86_64/strcasecmp_l.S
> index 5456b3a49e..84fd7fdfd3 100644
> --- a/sysdeps/x86_64/strcasecmp_l.S
> +++ b/sysdeps/x86_64/strcasecmp_l.S
> @@ -1,6 +1,11 @@
> -#define STRCMP __strcasecmp_l
> -#define USE_AS_STRCASECMP_L
> -#include "strcmp.S"
> +/* Symbols = __strcasecmp_l and __strcasecmp.  */
> +
> +#include "multiarch/strcasecmp_l-sse2.S"
> +
> +libc_hidden_builtin_def (__strcasecmp_l)
>
>  weak_alias (__strcasecmp_l, strcasecmp_l)
>  libc_hidden_def (strcasecmp_l)
> +
> +weak_alias (__strcasecmp, strcasecmp)
> +libc_hidden_def (__strcasecmp)
> diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
> index c38dc627f9..19e54bd3a7 100644
> --- a/sysdeps/x86_64/strcmp.S
> +++ b/sysdeps/x86_64/strcmp.S
> @@ -16,2148 +16,7 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#include <sysdep.h>
> -#include "asm-syntax.h"
> +/* Symbol = strcmp.  */
>
> -#undef UPDATE_STRNCMP_COUNTER
> -
> -#ifndef LABEL
> -#define LABEL(l) L(l)
> -#endif
> -
> -#ifdef USE_AS_STRNCMP
> -/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
> -   if the new counter > the old one or is 0.  */
> -# define UPDATE_STRNCMP_COUNTER                                \
> -       /* calculate left number to compare */          \
> -       lea     -16(%rcx, %r11), %r9;                   \
> -       cmp     %r9, %r11;                              \
> -       jb      LABEL(strcmp_exitz);                    \
> -       test    %r9, %r9;                               \
> -       je      LABEL(strcmp_exitz);                    \
> -       mov     %r9, %r11
> -
> -#elif defined USE_AS_STRCASECMP_L
> -# include "locale-defines.h"
> -
> -# define UPDATE_STRNCMP_COUNTER
> -#elif defined USE_AS_STRNCASECMP_L
> -# include "locale-defines.h"
> -
> -# define UPDATE_STRNCMP_COUNTER                                \
> -       /* calculate left number to compare */          \
> -       lea     -16(%rcx, %r11), %r9;                   \
> -       cmp     %r9, %r11;                              \
> -       jb      LABEL(strcmp_exitz);                    \
> -       test    %r9, %r9;                               \
> -       je      LABEL(strcmp_exitz);                    \
> -       mov     %r9, %r11
> -#else
> -# define UPDATE_STRNCMP_COUNTER
> -# ifndef STRCMP
> -#  define STRCMP strcmp
> -# endif
> -#endif
> -
> -       .text
> -#ifdef USE_AS_STRCASECMP_L
> -# ifndef ENTRY2
> -#  define ENTRY2(name) ENTRY (name)
> -#  define END2(name) END (name)
> -# endif
> -
> -ENTRY2 (__strcasecmp)
> -       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> -       mov     %fs:(%rax),%RDX_LP
> -
> -       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> -       .p2align 4
> -END2 (__strcasecmp)
> -# ifndef NO_NOLOCALE_ALIAS
> -weak_alias (__strcasecmp, strcasecmp)
> -libc_hidden_def (__strcasecmp)
> -# endif
> -       /* FALLTHROUGH to strcasecmp_l.  */
> -#elif defined USE_AS_STRNCASECMP_L
> -# ifndef ENTRY2
> -#  define ENTRY2(name) ENTRY (name)
> -#  define END2(name) END (name)
> -# endif
> -
> -ENTRY2 (__strncasecmp)
> -       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> -       mov     %fs:(%rax),%RCX_LP
> -
> -       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> -       .p2align 4
> -END2 (__strncasecmp)
> -# ifndef NO_NOLOCALE_ALIAS
> -weak_alias (__strncasecmp, strncasecmp)
> -libc_hidden_def (__strncasecmp)
> -# endif
> -       /* FALLTHROUGH to strncasecmp_l.  */
> -#endif
> -
> -ENTRY (STRCMP)
> -#ifdef USE_AS_STRCASECMP_L
> -       /* We have to fall back on the C implementation for locales
> -          with encodings not matching ASCII for single bytes.  */
> -# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> -       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
> -# else
> -       mov     (%rdx), %RAX_LP
> -# endif
> -       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> -       jne     __strcasecmp_l_nonascii
> -#elif defined USE_AS_STRNCASECMP_L
> -       /* We have to fall back on the C implementation for locales
> -          with encodings not matching ASCII for single bytes.  */
> -# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> -       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
> -# else
> -       mov     (%rcx), %RAX_LP
> -# endif
> -       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> -       jne     __strncasecmp_l_nonascii
> -#endif
> -
> -/*
> - * This implementation uses SSE to compare up to 16 bytes at a time.
> - */
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       test    %RDX_LP, %RDX_LP
> -       je      LABEL(strcmp_exitz)
> -       cmp     $1, %RDX_LP
> -       je      LABEL(Byte0)
> -       mov     %RDX_LP, %R11_LP
> -#endif
> -       mov     %esi, %ecx
> -       mov     %edi, %eax
> -/* Use 64bit AND here to avoid long NOP padding.  */
> -       and     $0x3f, %rcx             /* rsi alignment in cache line */
> -       and     $0x3f, %rax             /* rdi alignment in cache line */
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       .section .rodata.cst16,"aM",@progbits,16
> -       .align 16
> -.Llcase_min:
> -       .quad   0x3f3f3f3f3f3f3f3f
> -       .quad   0x3f3f3f3f3f3f3f3f
> -.Llcase_max:
> -       .quad   0x9999999999999999
> -       .quad   0x9999999999999999
> -.Lcase_add:
> -       .quad   0x2020202020202020
> -       .quad   0x2020202020202020
> -       .previous
> -       movdqa  .Llcase_min(%rip), %xmm5
> -# define LCASE_MIN_reg %xmm5
> -       movdqa  .Llcase_max(%rip), %xmm6
> -# define LCASE_MAX_reg %xmm6
> -       movdqa  .Lcase_add(%rip), %xmm7
> -# define CASE_ADD_reg %xmm7
> -#endif
> -       cmp     $0x30, %ecx
> -       ja      LABEL(crosscache)       /* rsi: 16-byte load will cross cache line */
> -       cmp     $0x30, %eax
> -       ja      LABEL(crosscache)       /* rdi: 16-byte load will cross cache line */
> -       movlpd  (%rdi), %xmm1
> -       movlpd  (%rsi), %xmm2
> -       movhpd  8(%rdi), %xmm1
> -       movhpd  8(%rsi), %xmm2
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -#  define TOLOWER(reg1, reg2) \
> -       movdqa  LCASE_MIN_reg, %xmm8;                                   \
> -       movdqa  LCASE_MIN_reg, %xmm9;                                   \
> -       paddb   reg1, %xmm8;                                    \
> -       paddb   reg2, %xmm9;                                    \
> -       pcmpgtb LCASE_MAX_reg, %xmm8;                           \
> -       pcmpgtb LCASE_MAX_reg, %xmm9;                           \
> -       pandn   CASE_ADD_reg, %xmm8;                                    \
> -       pandn   CASE_ADD_reg, %xmm9;                                    \
> -       paddb   %xmm8, reg1;                                    \
> -       paddb   %xmm9, reg2
> -       TOLOWER (%xmm1, %xmm2)
> -#else
> -# define TOLOWER(reg1, reg2)
> -#endif
> -       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> -       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> -       pcmpeqb %xmm2, %xmm1            /* compare first 16 bytes for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 16 bytes are same, edx == 0xffff */
> -       jnz     LABEL(less16bytes)      /* If not, find different value or null char */
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)     /* finish comparision */
> -#endif
> -       add     $16, %rsi               /* prepare to search next 16 bytes */
> -       add     $16, %rdi               /* prepare to search next 16 bytes */
> -
> -       /*
> -        * Determine source and destination string offsets from 16-byte alignment.
> -        * Use relative offset difference between the two to determine which case
> -        * below to use.
> -        */
> -       .p2align 4
> -LABEL(crosscache):
> -       and     $0xfffffffffffffff0, %rsi       /* force %rsi is 16 byte aligned */
> -       and     $0xfffffffffffffff0, %rdi       /* force %rdi is 16 byte aligned */
> -       mov     $0xffff, %edx                   /* for equivalent offset */
> -       xor     %r8d, %r8d
> -       and     $0xf, %ecx                      /* offset of rsi */
> -       and     $0xf, %eax                      /* offset of rdi */
> -       cmp     %eax, %ecx
> -       je      LABEL(ashr_0)                   /* rsi and rdi relative offset same */
> -       ja      LABEL(bigger)
> -       mov     %edx, %r8d                      /* r8d is offset flag for exit tail */
> -       xchg    %ecx, %eax
> -       xchg    %rsi, %rdi
> -LABEL(bigger):
> -       lea     15(%rax), %r9
> -       sub     %rcx, %r9
> -       lea     LABEL(unaligned_table)(%rip), %r10
> -       movslq  (%r10, %r9,4), %r9
> -       lea     (%r10, %r9), %r10
> -       _CET_NOTRACK jmp *%r10                  /* jump to corresponding case */
> -
> -/*
> - * The following cases will be handled by ashr_0
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
> - *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
> - */
> -       .p2align 4
> -LABEL(ashr_0):
> -
> -       movdqa  (%rsi), %xmm1
> -       pxor    %xmm0, %xmm0                    /* clear %xmm0 for null char check */
> -       pcmpeqb %xmm1, %xmm0                    /* Any null chars? */
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpeqb (%rdi), %xmm1                   /* compare 16 bytes for equality */
> -#else
> -       movdqa  (%rdi), %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm2, %xmm1                    /* compare 16 bytes for equality */
> -#endif
> -       psubb   %xmm0, %xmm1                    /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %r9d
> -       shr     %cl, %edx                       /* adjust 0xffff for offset */
> -       shr     %cl, %r9d                       /* adjust for 16-byte offset */
> -       sub     %r9d, %edx
> -       /*
> -        * edx must be the same with r9d if in left byte (16-rcx) is equal to
> -        * the start from (16-rax) and no null char was seen.
> -        */
> -       jne     LABEL(less32bytes)              /* mismatch or null char */
> -       UPDATE_STRNCMP_COUNTER
> -       mov     $16, %rcx
> -       mov     $16, %r9
> -       pxor    %xmm0, %xmm0                    /* clear xmm0, may have changed above */
> -
> -       /*
> -        * Now both strings are aligned at 16-byte boundary. Loop over strings
> -        * checking 32-bytes per iteration.
> -        */
> -       .p2align 4
> -LABEL(loop_ashr_0):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)             /* mismatch or null char seen */
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rcx
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rcx
> -       jmp     LABEL(loop_ashr_0)
> -
> -/*
> - * The following cases will be handled by ashr_1
> - * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> - *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
> - */
> -       .p2align 4
> -LABEL(ashr_1):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> -       pslldq  $15, %xmm2              /* shift first string to align with second */
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2            /* compare 16 bytes for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx               /* adjust 0xffff for offset */
> -       shr     %cl, %r9d               /* adjust for 16-byte offset */
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)      /* mismatch or null char seen */
> -       movdqa  (%rdi), %xmm3
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx               /* index for loads*/
> -       mov     $1, %r9d                /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     1(%rdi), %r10
> -       and     $0xfff, %r10            /* offset into 4K page */
> -       sub     $0x1000, %r10           /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_1):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_1)    /* cross page boundary */
> -
> -LABEL(gobble_ashr_1):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4             /* store for next cycle */
> -
> -       psrldq  $1, %xmm3
> -       pslldq  $15, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_1)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4            /* store for next cycle */
> -
> -       psrldq  $1, %xmm3
> -       pslldq  $15, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_1)
> -
> -       /*
> -        * Nibble avoids loads across page boundary. This is to avoid a potential
> -        * access into unmapped memory.
> -        */
> -       .p2align 4
> -LABEL(nibble_ashr_1):
> -       pcmpeqb %xmm3, %xmm0             /* check nibble for null char*/
> -       pmovmskb %xmm0, %edx
> -       test    $0xfffe, %edx
> -       jnz     LABEL(ashr_1_exittail)  /* find null char*/
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $15, %r11
> -       jbe     LABEL(ashr_1_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10           /* substract 4K from %r10 */
> -       jmp     LABEL(gobble_ashr_1)
> -
> -       /*
> -        * Once find null char, determine if there is a string mismatch
> -        * before the null char.
> -        */
> -       .p2align 4
> -LABEL(ashr_1_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $1, %xmm0
> -       psrldq  $1, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_2
> - * rcx(offset of rsi)  rax(offset of rdi)   relative offset   corresponding case
> - *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
> - */
> -       .p2align 4
> -LABEL(ashr_2):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $14, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $2, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     2(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_2):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_2)
> -
> -LABEL(gobble_ashr_2):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $2, %xmm3
> -       pslldq  $14, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_2)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $2, %xmm3
> -       pslldq  $14, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_2)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_2):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xfffc, %edx
> -       jnz     LABEL(ashr_2_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $14, %r11
> -       jbe     LABEL(ashr_2_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_2)
> -
> -       .p2align 4
> -LABEL(ashr_2_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $2, %xmm0
> -       psrldq  $2, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_3
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> - *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
> - */
> -       .p2align 4
> -LABEL(ashr_3):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $13, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $3, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     3(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_3):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_3)
> -
> -LABEL(gobble_ashr_3):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $3, %xmm3
> -       pslldq  $13, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_3)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $3, %xmm3
> -       pslldq  $13, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_3)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_3):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xfff8, %edx
> -       jnz     LABEL(ashr_3_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $13, %r11
> -       jbe     LABEL(ashr_3_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_3)
> -
> -       .p2align 4
> -LABEL(ashr_3_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $3, %xmm0
> -       psrldq  $3, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_4
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> - *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
> - */
> -       .p2align 4
> -LABEL(ashr_4):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $12, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $4, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     4(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_4):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_4)
> -
> -LABEL(gobble_ashr_4):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $4, %xmm3
> -       pslldq  $12, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_4)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $4, %xmm3
> -       pslldq  $12, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_4)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_4):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xfff0, %edx
> -       jnz     LABEL(ashr_4_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $12, %r11
> -       jbe     LABEL(ashr_4_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_4)
> -
> -       .p2align 4
> -LABEL(ashr_4_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $4, %xmm0
> -       psrldq  $4, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_5
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(11~15)          n - 11               4(15 +(n-11) - n)         ashr_5
> - */
> -       .p2align 4
> -LABEL(ashr_5):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $11, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $5, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     5(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_5):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_5)
> -
> -LABEL(gobble_ashr_5):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $5, %xmm3
> -       pslldq  $11, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_5)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $5, %xmm3
> -       pslldq  $11, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_5)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_5):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xffe0, %edx
> -       jnz     LABEL(ashr_5_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $11, %r11
> -       jbe     LABEL(ashr_5_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_5)
> -
> -       .p2align 4
> -LABEL(ashr_5_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $5, %xmm0
> -       psrldq  $5, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_6
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(10~15)          n - 10               5(15 +(n-10) - n)         ashr_6
> - */
> -       .p2align 4
> -LABEL(ashr_6):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $10, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $6, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     6(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_6):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_6)
> -
> -LABEL(gobble_ashr_6):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $6, %xmm3
> -       pslldq  $10, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_6)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $6, %xmm3
> -       pslldq  $10, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_6)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_6):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xffc0, %edx
> -       jnz     LABEL(ashr_6_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $10, %r11
> -       jbe     LABEL(ashr_6_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_6)
> -
> -       .p2align 4
> -LABEL(ashr_6_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $6, %xmm0
> -       psrldq  $6, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - * The following cases will be handled by ashr_7
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(9~15)          n - 9                6(15 +(n - 9) - n)         ashr_7
> - */
> -       .p2align 4
> -LABEL(ashr_7):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $9, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $7, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     7(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_7):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_7)
> -
> -LABEL(gobble_ashr_7):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $7, %xmm3
> -       pslldq  $9, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_7)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $7, %xmm3
> -       pslldq  $9, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_7)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_7):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xff80, %edx
> -       jnz     LABEL(ashr_7_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $9, %r11
> -       jbe     LABEL(ashr_7_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_7)
> -
> -       .p2align 4
> -LABEL(ashr_7_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $7, %xmm0
> -       psrldq  $7, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_8
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(8~15)          n - 8                7(15 +(n - 8) - n)         ashr_8
> - */
> -       .p2align 4
> -LABEL(ashr_8):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $8, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $8, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     8(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_8):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_8)
> -
> -LABEL(gobble_ashr_8):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $8, %xmm3
> -       pslldq  $8, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_8)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $8, %xmm3
> -       pslldq  $8, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_8)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_8):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xff00, %edx
> -       jnz     LABEL(ashr_8_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $8, %r11
> -       jbe     LABEL(ashr_8_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_8)
> -
> -       .p2align 4
> -LABEL(ashr_8_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $8, %xmm0
> -       psrldq  $8, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_9
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(7~15)          n - 7                8(15 +(n - 7) - n)         ashr_9
> - */
> -       .p2align 4
> -LABEL(ashr_9):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $7, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $9, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     9(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_9):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_9)
> -
> -LABEL(gobble_ashr_9):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $9, %xmm3
> -       pslldq  $7, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_9)    /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $9, %xmm3
> -       pslldq  $7, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3            /* store for next cycle */
> -       jmp     LABEL(loop_ashr_9)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_9):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xfe00, %edx
> -       jnz     LABEL(ashr_9_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $7, %r11
> -       jbe     LABEL(ashr_9_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_9)
> -
> -       .p2align 4
> -LABEL(ashr_9_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $9, %xmm0
> -       psrldq  $9, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_10
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(6~15)          n - 6                9(15 +(n - 6) - n)         ashr_10
> - */
> -       .p2align 4
> -LABEL(ashr_10):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $6, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $10, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     10(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_10):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_10)
> -
> -LABEL(gobble_ashr_10):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $10, %xmm3
> -       pslldq  $6, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_10)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $10, %xmm3
> -       pslldq  $6, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_10)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_10):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xfc00, %edx
> -       jnz     LABEL(ashr_10_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $6, %r11
> -       jbe     LABEL(ashr_10_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_10)
> -
> -       .p2align 4
> -LABEL(ashr_10_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $10, %xmm0
> -       psrldq  $10, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_11
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(5~15)          n - 5               10(15 +(n - 5) - n)         ashr_11
> - */
> -       .p2align 4
> -LABEL(ashr_11):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $5, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $11, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     11(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_11):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_11)
> -
> -LABEL(gobble_ashr_11):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $11, %xmm3
> -       pslldq  $5, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_11)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $11, %xmm3
> -       pslldq  $5, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_11)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_11):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xf800, %edx
> -       jnz     LABEL(ashr_11_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $5, %r11
> -       jbe     LABEL(ashr_11_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_11)
> -
> -       .p2align 4
> -LABEL(ashr_11_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $11, %xmm0
> -       psrldq  $11, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_12
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(4~15)          n - 4                11(15 +(n - 4) - n)         ashr_12
> - */
> -       .p2align 4
> -LABEL(ashr_12):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $4, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $12, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     12(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_12):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_12)
> -
> -LABEL(gobble_ashr_12):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $12, %xmm3
> -       pslldq  $4, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_12)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $12, %xmm3
> -       pslldq  $4, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_12)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_12):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xf000, %edx
> -       jnz     LABEL(ashr_12_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $4, %r11
> -       jbe     LABEL(ashr_12_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_12)
> -
> -       .p2align 4
> -LABEL(ashr_12_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $12, %xmm0
> -       psrldq  $12, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_13
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(3~15)          n - 3                12(15 +(n - 3) - n)         ashr_13
> - */
> -       .p2align 4
> -LABEL(ashr_13):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $3, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $13, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     13(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_13):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_13)
> -
> -LABEL(gobble_ashr_13):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $13, %xmm3
> -       pslldq  $3, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_13)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $13, %xmm3
> -       pslldq  $3, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_13)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_13):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xe000, %edx
> -       jnz     LABEL(ashr_13_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $3, %r11
> -       jbe     LABEL(ashr_13_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_13)
> -
> -       .p2align 4
> -LABEL(ashr_13_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $13, %xmm0
> -       psrldq  $13, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_14
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(2~15)          n - 2                13(15 +(n - 2) - n)         ashr_14
> - */
> -       .p2align 4
> -LABEL(ashr_14):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $2, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $14, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     14(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_14):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_14)
> -
> -LABEL(gobble_ashr_14):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $14, %xmm3
> -       pslldq  $2, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_14)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $14, %xmm3
> -       pslldq  $2, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP | defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_14)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_14):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0xc000, %edx
> -       jnz     LABEL(ashr_14_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     $2, %r11
> -       jbe     LABEL(ashr_14_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_14)
> -
> -       .p2align 4
> -LABEL(ashr_14_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $14, %xmm0
> -       psrldq  $14, %xmm3
> -       jmp     LABEL(aftertail)
> -
> -/*
> - *  The following cases will be handled by ashr_15
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(1~15)          n - 1                14(15 +(n - 1) - n)         ashr_15
> - */
> -       .p2align 4
> -LABEL(ashr_15):
> -       pxor    %xmm0, %xmm0
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0
> -       pslldq  $1, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       pxor    %xmm0, %xmm0
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $15, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     15(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       .p2align 4
> -LABEL(loop_ashr_15):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_15)
> -
> -LABEL(gobble_ashr_15):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $15, %xmm3
> -       pslldq  $1, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_15)   /* cross page boundary */
> -
> -       movdqa  (%rsi, %rcx), %xmm1
> -       movdqa  (%rdi, %rcx), %xmm2
> -       movdqa  %xmm2, %xmm4
> -
> -       psrldq  $15, %xmm3
> -       pslldq  $1, %xmm2
> -       por     %xmm3, %xmm2            /* merge into one 16byte value */
> -
> -       TOLOWER (%xmm1, %xmm2)
> -
> -       pcmpeqb %xmm1, %xmm0
> -       pcmpeqb %xmm2, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx
> -       jnz     LABEL(exit)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rcx
> -       movdqa  %xmm4, %xmm3
> -       jmp     LABEL(loop_ashr_15)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_15):
> -       pcmpeqb %xmm3, %xmm0            /* check nibble for null char */
> -       pmovmskb %xmm0, %edx
> -       test    $0x8000, %edx
> -       jnz     LABEL(ashr_15_exittail)
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmpq    $1, %r11
> -       jbe     LABEL(ashr_15_exittail)
> -#endif
> -
> -       pxor    %xmm0, %xmm0
> -       sub     $0x1000, %r10
> -       jmp     LABEL(gobble_ashr_15)
> -
> -       .p2align 4
> -LABEL(ashr_15_exittail):
> -       movdqa  (%rsi, %rcx), %xmm1
> -       psrldq  $15, %xmm3
> -       psrldq  $15, %xmm0
> -
> -       .p2align 4
> -LABEL(aftertail):
> -       TOLOWER (%xmm1, %xmm3)
> -       pcmpeqb %xmm3, %xmm1
> -       psubb   %xmm0, %xmm1
> -       pmovmskb %xmm1, %edx
> -       not     %edx
> -
> -       .p2align 4
> -LABEL(exit):
> -       lea     -16(%r9, %rcx), %rax    /* locate the exact offset for rdi */
> -LABEL(less32bytes):
> -       lea     (%rdi, %rax), %rdi      /* locate the exact address for first operand(rdi) */
> -       lea     (%rsi, %rcx), %rsi      /* locate the exact address for second operand(rsi) */
> -       test    %r8d, %r8d
> -       jz      LABEL(ret)
> -       xchg    %rsi, %rdi              /* recover original order according to flag(%r8d) */
> -
> -       .p2align 4
> -LABEL(ret):
> -LABEL(less16bytes):
> -       bsf     %rdx, %rdx              /* find and store bit index in %rdx */
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     %rdx, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       movzbl  (%rsi, %rdx), %ecx
> -       movzbl  (%rdi, %rdx), %eax
> -
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> -       movl    (%rdx,%rcx,4), %ecx
> -       movl    (%rdx,%rax,4), %eax
> -#endif
> -
> -       sub     %ecx, %eax
> -       ret
> -
> -LABEL(strcmp_exitz):
> -       xor     %eax, %eax
> -       ret
> -
> -       .p2align 4
> -LABEL(Byte0):
> -       movzbl  (%rsi), %ecx
> -       movzbl  (%rdi), %eax
> -
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> -       movl    (%rdx,%rcx,4), %ecx
> -       movl    (%rdx,%rax,4), %eax
> -#endif
> -
> -       sub     %ecx, %eax
> -       ret
> -END (STRCMP)
> -
> -       .section .rodata,"a",@progbits
> -       .p2align 3
> -LABEL(unaligned_table):
> -       .int    LABEL(ashr_1) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_2) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_3) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_4) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_5) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_6) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_7) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_8) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_9) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_10) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_11) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_12) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_13) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_14) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_15) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_0) - LABEL(unaligned_table)
> -libc_hidden_builtin_def (STRCMP)
> +#include "multiarch/strcmp-sse2.S"
> +libc_hidden_builtin_def (strcmp)
> diff --git a/sysdeps/x86_64/strncase_l.S b/sysdeps/x86_64/strncase_l.S
> index c725cd85b3..3780fc50b1 100644
> --- a/sysdeps/x86_64/strncase_l.S
> +++ b/sysdeps/x86_64/strncase_l.S
> @@ -1,6 +1,11 @@
> -#define STRCMP __strncasecmp_l
> -#define USE_AS_STRNCASECMP_L
> -#include "strcmp.S"
> +/* Symbols = __strncasecmp_l and __strncasecmp.  */
> +
> +#include "multiarch/strncase_l-sse2.S"
> +
> +libc_hidden_builtin_def (__strncasecmp_l)
>
>  weak_alias (__strncasecmp_l, strncasecmp_l)
>  libc_hidden_def (strncasecmp_l)
> +
> +weak_alias (__strncasecmp, strncasecmp)
> +libc_hidden_def (__strncasecmp)
> diff --git a/sysdeps/x86_64/strncmp.S b/sysdeps/x86_64/strncmp.S
> index 0af34e7f15..13d9e82ee2 100644
> --- a/sysdeps/x86_64/strncmp.S
> +++ b/sysdeps/x86_64/strncmp.S
> @@ -1,3 +1,4 @@
> -#define STRCMP strncmp
> -#define USE_AS_STRNCMP
> -#include "strcmp.S"
> +/* Symbol = strncmp.  */
> +
> +#include "multiarch/strncmp-sse2.S"
> +libc_hidden_builtin_def (strncmp)
> --
> 2.34.1
>

LGTM.

Thanks.

-- 
H.J.

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S
  2022-07-12 19:28 ` [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S Noah Goldstein
@ 2022-07-13  0:05   ` H.J. Lu
  0 siblings, 0 replies; 8+ messages in thread
From: H.J. Lu @ 2022-07-13  0:05 UTC (permalink / raw)
  To: Noah Goldstein; +Cc: GNU C Library, Carlos O'Donell

On Tue, Jul 12, 2022 at 12:28 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> This commit doesn't affect libc.so.6, its just housekeeping to prepare
> for adding explicit ISA level support.
>
> Tested build on x86_64 and x86_32 with/without multiarch.
> ---
>  sysdeps/x86_64/multiarch/wcscmp-sse2.S | 936 ++++++++++++++++++++++++-
>  sysdeps/x86_64/wcscmp.S                | 932 +-----------------------
>  2 files changed, 934 insertions(+), 934 deletions(-)
>
> diff --git a/sysdeps/x86_64/multiarch/wcscmp-sse2.S b/sysdeps/x86_64/multiarch/wcscmp-sse2.S
> index 72a19bd64d..6cb7d9faf9 100644
> --- a/sysdeps/x86_64/multiarch/wcscmp-sse2.S
> +++ b/sysdeps/x86_64/multiarch/wcscmp-sse2.S
> @@ -16,8 +16,936 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#if IS_IN (libc)
> -# define __wcscmp __wcscmp_sse2
> -#endif
> +#define USE_AS_WCSCMP
> +#define STRCMP_ISA     _sse2
> +#include "strcmp-naming.h"
>
> -#include "../wcscmp.S"
> +#include <sysdep.h>
> +
> +/* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */
> +
> +       .text
> +ENTRY (STRCMP)
> +/*
> +       * This implementation uses SSE to compare up to 16 bytes at a time.
> +*/
> +       mov     %esi, %eax
> +       mov     %edi, %edx
> +       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> +       mov     %al, %ch
> +       mov     %dl, %cl
> +       and     $63, %eax               /* rsi alignment in cache line */
> +       and     $63, %edx               /* rdi alignment in cache line */
> +       and     $15, %cl
> +       jz      L(continue_00)
> +       cmp     $16, %edx
> +       jb      L(continue_0)
> +       cmp     $32, %edx
> +       jb      L(continue_16)
> +       cmp     $48, %edx
> +       jb      L(continue_32)
> +
> +L(continue_48):
> +       and     $15, %ch
> +       jz      L(continue_48_00)
> +       cmp     $16, %eax
> +       jb      L(continue_0_48)
> +       cmp     $32, %eax
> +       jb      L(continue_16_48)
> +       cmp     $48, %eax
> +       jb      L(continue_32_48)
> +
> +       .p2align 4
> +L(continue_48_48):
> +       mov     (%rsi), %ecx
> +       cmp     %ecx, (%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     4(%rsi), %ecx
> +       cmp     %ecx, 4(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     8(%rsi), %ecx
> +       cmp     %ecx, 8(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     12(%rsi), %ecx
> +       cmp     %ecx, 12(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       movdqu  16(%rdi), %xmm1
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rdi), %xmm1
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       movdqu  48(%rdi), %xmm1
> +       movdqu  48(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_48_48)
> +
> +L(continue_0):
> +       and     $15, %ch
> +       jz      L(continue_0_00)
> +       cmp     $16, %eax
> +       jb      L(continue_0_0)
> +       cmp     $32, %eax
> +       jb      L(continue_0_16)
> +       cmp     $48, %eax
> +       jb      L(continue_0_32)
> +
> +       .p2align 4
> +L(continue_0_48):
> +       mov     (%rsi), %ecx
> +       cmp     %ecx, (%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     4(%rsi), %ecx
> +       cmp     %ecx, 4(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     8(%rsi), %ecx
> +       cmp     %ecx, 8(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     12(%rsi), %ecx
> +       cmp     %ecx, 12(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       movdqu  16(%rdi), %xmm1
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rdi), %xmm1
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       mov     48(%rsi), %ecx
> +       cmp     %ecx, 48(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     52(%rsi), %ecx
> +       cmp     %ecx, 52(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     56(%rsi), %ecx
> +       cmp     %ecx, 56(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     60(%rsi), %ecx
> +       cmp     %ecx, 60(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_0_48)
> +
> +       .p2align 4
> +L(continue_00):
> +       and     $15, %ch
> +       jz      L(continue_00_00)
> +       cmp     $16, %eax
> +       jb      L(continue_00_0)
> +       cmp     $32, %eax
> +       jb      L(continue_00_16)
> +       cmp     $48, %eax
> +       jb      L(continue_00_32)
> +
> +       .p2align 4
> +L(continue_00_48):
> +       pcmpeqd (%rdi), %xmm0
> +       mov     (%rdi), %eax
> +       pmovmskb %xmm0, %ecx
> +       test    %ecx, %ecx
> +       jnz     L(less4_double_words1)
> +
> +       cmp     (%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     4(%rdi), %eax
> +       cmp     4(%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     8(%rdi), %eax
> +       cmp     8(%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     12(%rdi), %eax
> +       cmp     12(%rsi), %eax
> +       jne     L(nequal)
> +
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 32(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       movdqu  48(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 48(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_00_48)
> +
> +       .p2align 4
> +L(continue_32):
> +       and     $15, %ch
> +       jz      L(continue_32_00)
> +       cmp     $16, %eax
> +       jb      L(continue_0_32)
> +       cmp     $32, %eax
> +       jb      L(continue_16_32)
> +       cmp     $48, %eax
> +       jb      L(continue_32_32)
> +
> +       .p2align 4
> +L(continue_32_48):
> +       mov     (%rsi), %ecx
> +       cmp     %ecx, (%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     4(%rsi), %ecx
> +       cmp     %ecx, 4(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     8(%rsi), %ecx
> +       cmp     %ecx, 8(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     12(%rsi), %ecx
> +       cmp     %ecx, 12(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     16(%rsi), %ecx
> +       cmp     %ecx, 16(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     20(%rsi), %ecx
> +       cmp     %ecx, 20(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     24(%rsi), %ecx
> +       cmp     %ecx, 24(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     28(%rsi), %ecx
> +       cmp     %ecx, 28(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       movdqu  32(%rdi), %xmm1
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       movdqu  48(%rdi), %xmm1
> +       movdqu  48(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_32_48)
> +
> +       .p2align 4
> +L(continue_16):
> +       and     $15, %ch
> +       jz      L(continue_16_00)
> +       cmp     $16, %eax
> +       jb      L(continue_0_16)
> +       cmp     $32, %eax
> +       jb      L(continue_16_16)
> +       cmp     $48, %eax
> +       jb      L(continue_16_32)
> +
> +       .p2align 4
> +L(continue_16_48):
> +       mov     (%rsi), %ecx
> +       cmp     %ecx, (%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     4(%rsi), %ecx
> +       cmp     %ecx, 4(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     8(%rsi), %ecx
> +       cmp     %ecx, 8(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     12(%rsi), %ecx
> +       cmp     %ecx, 12(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       movdqu  16(%rdi), %xmm1
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       mov     32(%rsi), %ecx
> +       cmp     %ecx, 32(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     36(%rsi), %ecx
> +       cmp     %ecx, 36(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     40(%rsi), %ecx
> +       cmp     %ecx, 40(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     44(%rsi), %ecx
> +       cmp     %ecx, 44(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       movdqu  48(%rdi), %xmm1
> +       movdqu  48(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_16_48)
> +
> +       .p2align 4
> +L(continue_00_00):
> +       movdqa  (%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqa  16(%rdi), %xmm3
> +       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rsi), %xmm3         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> +       pmovmskb %xmm3, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqa  32(%rdi), %xmm5
> +       pcmpeqd %xmm5, %xmm0            /* Any null double_word? */
> +       pcmpeqd 32(%rsi), %xmm5         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm5            /* packed sub of comparison results*/
> +       pmovmskb %xmm5, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       movdqa  48(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 48(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_00_00)
> +
> +       .p2align 4
> +L(continue_00_32):
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       add     $16, %rsi
> +       add     $16, %rdi
> +       jmp     L(continue_00_48)
> +
> +       .p2align 4
> +L(continue_00_16):
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       add     $32, %rsi
> +       add     $32, %rdi
> +       jmp     L(continue_00_48)
> +
> +       .p2align 4
> +L(continue_00_0):
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> +       pcmpeqd 32(%rdi), %xmm2         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       add     $48, %rsi
> +       add     $48, %rdi
> +       jmp     L(continue_00_48)
> +
> +       .p2align 4
> +L(continue_48_00):
> +       pcmpeqd (%rsi), %xmm0
> +       mov     (%rdi), %eax
> +       pmovmskb %xmm0, %ecx
> +       test    %ecx, %ecx
> +       jnz     L(less4_double_words1)
> +
> +       cmp     (%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     4(%rdi), %eax
> +       cmp     4(%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     8(%rdi), %eax
> +       cmp     8(%rsi), %eax
> +       jne     L(nequal)
> +
> +       mov     12(%rdi), %eax
> +       cmp     12(%rsi), %eax
> +       jne     L(nequal)
> +
> +       movdqu  16(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 32(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       movdqu  48(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 48(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_48)
> +
> +       add     $64, %rsi
> +       add     $64, %rdi
> +       jmp     L(continue_48_00)
> +
> +       .p2align 4
> +L(continue_32_00):
> +       movdqu  (%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       add     $16, %rsi
> +       add     $16, %rdi
> +       jmp     L(continue_48_00)
> +
> +       .p2align 4
> +L(continue_16_00):
> +       movdqu  (%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       add     $32, %rsi
> +       add     $32, %rdi
> +       jmp     L(continue_48_00)
> +
> +       .p2align 4
> +L(continue_0_00):
> +       movdqu  (%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rdi), %xmm1
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd 32(%rsi), %xmm1         /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       add     $48, %rsi
> +       add     $48, %rdi
> +       jmp     L(continue_48_00)
> +
> +       .p2align 4
> +L(continue_32_32):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       add     $16, %rsi
> +       add     $16, %rdi
> +       jmp     L(continue_48_48)
> +
> +       .p2align 4
> +L(continue_16_16):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rdi), %xmm3
> +       movdqu  16(%rsi), %xmm4
> +       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm4, %xmm3            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> +       pmovmskb %xmm3, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       add     $32, %rsi
> +       add     $32, %rdi
> +       jmp     L(continue_48_48)
> +
> +       .p2align 4
> +L(continue_0_0):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rdi), %xmm3
> +       movdqu  16(%rsi), %xmm4
> +       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm4, %xmm3            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> +       pmovmskb %xmm3, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       movdqu  32(%rdi), %xmm1
> +       movdqu  32(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_32)
> +
> +       add     $48, %rsi
> +       add     $48, %rdi
> +       jmp     L(continue_48_48)
> +
> +       .p2align 4
> +L(continue_0_16):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       movdqu  16(%rdi), %xmm1
> +       movdqu  16(%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words_16)
> +
> +       add     $32, %rsi
> +       add     $32, %rdi
> +       jmp     L(continue_32_48)
> +
> +       .p2align 4
> +L(continue_0_32):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       add     $16, %rsi
> +       add     $16, %rdi
> +       jmp     L(continue_16_48)
> +
> +       .p2align 4
> +L(continue_16_32):
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> +       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> +       jnz     L(less4_double_words)
> +
> +       add     $16, %rsi
> +       add     $16, %rdi
> +       jmp     L(continue_32_48)
> +
> +       .p2align 4
> +L(less4_double_words1):
> +       cmp     (%rsi), %eax
> +       jne     L(nequal)
> +       test    %eax, %eax
> +       jz      L(equal)
> +
> +       mov     4(%rsi), %ecx
> +       cmp     %ecx, 4(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     8(%rsi), %ecx
> +       cmp     %ecx, 8(%rdi)
> +       jne     L(nequal)
> +       test    %ecx, %ecx
> +       jz      L(equal)
> +
> +       mov     12(%rsi), %ecx
> +       cmp     %ecx, 12(%rdi)
> +       jne     L(nequal)
> +       xor     %eax, %eax
> +       ret
> +
> +       .p2align 4
> +L(less4_double_words):
> +       xor     %eax, %eax
> +       test    %dl, %dl
> +       jz      L(next_two_double_words)
> +       and     $15, %dl
> +       jz      L(second_double_word)
> +       mov     (%rdi), %eax
> +       cmp     (%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(second_double_word):
> +       mov     4(%rdi), %eax
> +       cmp     4(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(next_two_double_words):
> +       and     $15, %dh
> +       jz      L(fourth_double_word)
> +       mov     8(%rdi), %eax
> +       cmp     8(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(fourth_double_word):
> +       mov     12(%rdi), %eax
> +       cmp     12(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(less4_double_words_16):
> +       xor     %eax, %eax
> +       test    %dl, %dl
> +       jz      L(next_two_double_words_16)
> +       and     $15, %dl
> +       jz      L(second_double_word_16)
> +       mov     16(%rdi), %eax
> +       cmp     16(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(second_double_word_16):
> +       mov     20(%rdi), %eax
> +       cmp     20(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(next_two_double_words_16):
> +       and     $15, %dh
> +       jz      L(fourth_double_word_16)
> +       mov     24(%rdi), %eax
> +       cmp     24(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(fourth_double_word_16):
> +       mov     28(%rdi), %eax
> +       cmp     28(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(less4_double_words_32):
> +       xor     %eax, %eax
> +       test    %dl, %dl
> +       jz      L(next_two_double_words_32)
> +       and     $15, %dl
> +       jz      L(second_double_word_32)
> +       mov     32(%rdi), %eax
> +       cmp     32(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(second_double_word_32):
> +       mov     36(%rdi), %eax
> +       cmp     36(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(next_two_double_words_32):
> +       and     $15, %dh
> +       jz      L(fourth_double_word_32)
> +       mov     40(%rdi), %eax
> +       cmp     40(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(fourth_double_word_32):
> +       mov     44(%rdi), %eax
> +       cmp     44(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(less4_double_words_48):
> +       xor     %eax, %eax
> +       test    %dl, %dl
> +       jz      L(next_two_double_words_48)
> +       and     $15, %dl
> +       jz      L(second_double_word_48)
> +       mov     48(%rdi), %eax
> +       cmp     48(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(second_double_word_48):
> +       mov     52(%rdi), %eax
> +       cmp     52(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(next_two_double_words_48):
> +       and     $15, %dh
> +       jz      L(fourth_double_word_48)
> +       mov     56(%rdi), %eax
> +       cmp     56(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(fourth_double_word_48):
> +       mov     60(%rdi), %eax
> +       cmp     60(%rsi), %eax
> +       jne     L(nequal)
> +       ret
> +
> +       .p2align 4
> +L(nequal):
> +       mov     $1, %eax
> +       jg      L(nequal_bigger)
> +       neg     %eax
> +
> +L(nequal_bigger):
> +       ret
> +
> +       .p2align 4
> +L(equal):
> +       xor     %rax, %rax
> +       ret
> +
> +END (STRCMP)
> diff --git a/sysdeps/x86_64/wcscmp.S b/sysdeps/x86_64/wcscmp.S
> index 5cb42f47b9..e04cdbf5fe 100644
> --- a/sysdeps/x86_64/wcscmp.S
> +++ b/sysdeps/x86_64/wcscmp.S
> @@ -16,936 +16,8 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#include <sysdep.h>
> +/* Symbol = __wcscmp.  */
>
> -/* Note: wcscmp uses signed comparison, not unsighed as in strcmp function. */
> -
> -       .text
> -ENTRY (__wcscmp)
> -/*
> -       * This implementation uses SSE to compare up to 16 bytes at a time.
> -*/
> -       mov     %esi, %eax
> -       mov     %edi, %edx
> -       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> -       mov     %al, %ch
> -       mov     %dl, %cl
> -       and     $63, %eax               /* rsi alignment in cache line */
> -       and     $63, %edx               /* rdi alignment in cache line */
> -       and     $15, %cl
> -       jz      L(continue_00)
> -       cmp     $16, %edx
> -       jb      L(continue_0)
> -       cmp     $32, %edx
> -       jb      L(continue_16)
> -       cmp     $48, %edx
> -       jb      L(continue_32)
> -
> -L(continue_48):
> -       and     $15, %ch
> -       jz      L(continue_48_00)
> -       cmp     $16, %eax
> -       jb      L(continue_0_48)
> -       cmp     $32, %eax
> -       jb      L(continue_16_48)
> -       cmp     $48, %eax
> -       jb      L(continue_32_48)
> -
> -       .p2align 4
> -L(continue_48_48):
> -       mov     (%rsi), %ecx
> -       cmp     %ecx, (%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     4(%rsi), %ecx
> -       cmp     %ecx, 4(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     8(%rsi), %ecx
> -       cmp     %ecx, 8(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     12(%rsi), %ecx
> -       cmp     %ecx, 12(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       movdqu  16(%rdi), %xmm1
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rdi), %xmm1
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       movdqu  48(%rdi), %xmm1
> -       movdqu  48(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_48_48)
> -
> -L(continue_0):
> -       and     $15, %ch
> -       jz      L(continue_0_00)
> -       cmp     $16, %eax
> -       jb      L(continue_0_0)
> -       cmp     $32, %eax
> -       jb      L(continue_0_16)
> -       cmp     $48, %eax
> -       jb      L(continue_0_32)
> -
> -       .p2align 4
> -L(continue_0_48):
> -       mov     (%rsi), %ecx
> -       cmp     %ecx, (%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     4(%rsi), %ecx
> -       cmp     %ecx, 4(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     8(%rsi), %ecx
> -       cmp     %ecx, 8(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     12(%rsi), %ecx
> -       cmp     %ecx, 12(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       movdqu  16(%rdi), %xmm1
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rdi), %xmm1
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       mov     48(%rsi), %ecx
> -       cmp     %ecx, 48(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     52(%rsi), %ecx
> -       cmp     %ecx, 52(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     56(%rsi), %ecx
> -       cmp     %ecx, 56(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     60(%rsi), %ecx
> -       cmp     %ecx, 60(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_0_48)
> -
> -       .p2align 4
> -L(continue_00):
> -       and     $15, %ch
> -       jz      L(continue_00_00)
> -       cmp     $16, %eax
> -       jb      L(continue_00_0)
> -       cmp     $32, %eax
> -       jb      L(continue_00_16)
> -       cmp     $48, %eax
> -       jb      L(continue_00_32)
> -
> -       .p2align 4
> -L(continue_00_48):
> -       pcmpeqd (%rdi), %xmm0
> -       mov     (%rdi), %eax
> -       pmovmskb %xmm0, %ecx
> -       test    %ecx, %ecx
> -       jnz     L(less4_double_words1)
> -
> -       cmp     (%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     4(%rdi), %eax
> -       cmp     4(%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     8(%rdi), %eax
> -       cmp     8(%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     12(%rdi), %eax
> -       cmp     12(%rsi), %eax
> -       jne     L(nequal)
> -
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 32(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       movdqu  48(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 48(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_00_48)
> -
> -       .p2align 4
> -L(continue_32):
> -       and     $15, %ch
> -       jz      L(continue_32_00)
> -       cmp     $16, %eax
> -       jb      L(continue_0_32)
> -       cmp     $32, %eax
> -       jb      L(continue_16_32)
> -       cmp     $48, %eax
> -       jb      L(continue_32_32)
> -
> -       .p2align 4
> -L(continue_32_48):
> -       mov     (%rsi), %ecx
> -       cmp     %ecx, (%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     4(%rsi), %ecx
> -       cmp     %ecx, 4(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     8(%rsi), %ecx
> -       cmp     %ecx, 8(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     12(%rsi), %ecx
> -       cmp     %ecx, 12(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     16(%rsi), %ecx
> -       cmp     %ecx, 16(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     20(%rsi), %ecx
> -       cmp     %ecx, 20(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     24(%rsi), %ecx
> -       cmp     %ecx, 24(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     28(%rsi), %ecx
> -       cmp     %ecx, 28(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       movdqu  32(%rdi), %xmm1
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       movdqu  48(%rdi), %xmm1
> -       movdqu  48(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_32_48)
> -
> -       .p2align 4
> -L(continue_16):
> -       and     $15, %ch
> -       jz      L(continue_16_00)
> -       cmp     $16, %eax
> -       jb      L(continue_0_16)
> -       cmp     $32, %eax
> -       jb      L(continue_16_16)
> -       cmp     $48, %eax
> -       jb      L(continue_16_32)
> -
> -       .p2align 4
> -L(continue_16_48):
> -       mov     (%rsi), %ecx
> -       cmp     %ecx, (%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     4(%rsi), %ecx
> -       cmp     %ecx, 4(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     8(%rsi), %ecx
> -       cmp     %ecx, 8(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     12(%rsi), %ecx
> -       cmp     %ecx, 12(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       movdqu  16(%rdi), %xmm1
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       mov     32(%rsi), %ecx
> -       cmp     %ecx, 32(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     36(%rsi), %ecx
> -       cmp     %ecx, 36(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     40(%rsi), %ecx
> -       cmp     %ecx, 40(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     44(%rsi), %ecx
> -       cmp     %ecx, 44(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       movdqu  48(%rdi), %xmm1
> -       movdqu  48(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_16_48)
> -
> -       .p2align 4
> -L(continue_00_00):
> -       movdqa  (%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqa  16(%rdi), %xmm3
> -       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rsi), %xmm3         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> -       pmovmskb %xmm3, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqa  32(%rdi), %xmm5
> -       pcmpeqd %xmm5, %xmm0            /* Any null double_word? */
> -       pcmpeqd 32(%rsi), %xmm5         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm5            /* packed sub of comparison results*/
> -       pmovmskb %xmm5, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       movdqa  48(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 48(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_00_00)
> -
> -       .p2align 4
> -L(continue_00_32):
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       add     $16, %rsi
> -       add     $16, %rdi
> -       jmp     L(continue_00_48)
> -
> -       .p2align 4
> -L(continue_00_16):
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       add     $32, %rsi
> -       add     $32, %rdi
> -       jmp     L(continue_00_48)
> -
> -       .p2align 4
> -L(continue_00_0):
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rdi), %xmm2           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm2, %xmm0            /* Any null double_word? */
> -       pcmpeqd 32(%rdi), %xmm2         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       add     $48, %rsi
> -       add     $48, %rdi
> -       jmp     L(continue_00_48)
> -
> -       .p2align 4
> -L(continue_48_00):
> -       pcmpeqd (%rsi), %xmm0
> -       mov     (%rdi), %eax
> -       pmovmskb %xmm0, %ecx
> -       test    %ecx, %ecx
> -       jnz     L(less4_double_words1)
> -
> -       cmp     (%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     4(%rdi), %eax
> -       cmp     4(%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     8(%rdi), %eax
> -       cmp     8(%rsi), %eax
> -       jne     L(nequal)
> -
> -       mov     12(%rdi), %eax
> -       cmp     12(%rsi), %eax
> -       jne     L(nequal)
> -
> -       movdqu  16(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 32(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       movdqu  48(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 48(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_48)
> -
> -       add     $64, %rsi
> -       add     $64, %rdi
> -       jmp     L(continue_48_00)
> -
> -       .p2align 4
> -L(continue_32_00):
> -       movdqu  (%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       add     $16, %rsi
> -       add     $16, %rdi
> -       jmp     L(continue_48_00)
> -
> -       .p2align 4
> -L(continue_16_00):
> -       movdqu  (%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       add     $32, %rsi
> -       add     $32, %rdi
> -       jmp     L(continue_48_00)
> -
> -       .p2align 4
> -L(continue_0_00):
> -       movdqu  (%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd (%rsi), %xmm1           /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 16(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rdi), %xmm1
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd 32(%rsi), %xmm1         /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       add     $48, %rsi
> -       add     $48, %rdi
> -       jmp     L(continue_48_00)
> -
> -       .p2align 4
> -L(continue_32_32):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       add     $16, %rsi
> -       add     $16, %rdi
> -       jmp     L(continue_48_48)
> -
> -       .p2align 4
> -L(continue_16_16):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rdi), %xmm3
> -       movdqu  16(%rsi), %xmm4
> -       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm4, %xmm3            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> -       pmovmskb %xmm3, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       add     $32, %rsi
> -       add     $32, %rdi
> -       jmp     L(continue_48_48)
> -
> -       .p2align 4
> -L(continue_0_0):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rdi), %xmm3
> -       movdqu  16(%rsi), %xmm4
> -       pcmpeqd %xmm3, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm4, %xmm3            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm3            /* packed sub of comparison results*/
> -       pmovmskb %xmm3, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       movdqu  32(%rdi), %xmm1
> -       movdqu  32(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_32)
> -
> -       add     $48, %rsi
> -       add     $48, %rdi
> -       jmp     L(continue_48_48)
> -
> -       .p2align 4
> -L(continue_0_16):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       movdqu  16(%rdi), %xmm1
> -       movdqu  16(%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words_16)
> -
> -       add     $32, %rsi
> -       add     $32, %rdi
> -       jmp     L(continue_32_48)
> -
> -       .p2align 4
> -L(continue_0_32):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       add     $16, %rsi
> -       add     $16, %rdi
> -       jmp     L(continue_16_48)
> -
> -       .p2align 4
> -L(continue_16_32):
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -       pcmpeqd %xmm1, %xmm0            /* Any null double_word? */
> -       pcmpeqd %xmm2, %xmm1            /* compare first 4 double_words for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 4 double_words are same, edx == 0xffff */
> -       jnz     L(less4_double_words)
> -
> -       add     $16, %rsi
> -       add     $16, %rdi
> -       jmp     L(continue_32_48)
> -
> -       .p2align 4
> -L(less4_double_words1):
> -       cmp     (%rsi), %eax
> -       jne     L(nequal)
> -       test    %eax, %eax
> -       jz      L(equal)
> -
> -       mov     4(%rsi), %ecx
> -       cmp     %ecx, 4(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     8(%rsi), %ecx
> -       cmp     %ecx, 8(%rdi)
> -       jne     L(nequal)
> -       test    %ecx, %ecx
> -       jz      L(equal)
> -
> -       mov     12(%rsi), %ecx
> -       cmp     %ecx, 12(%rdi)
> -       jne     L(nequal)
> -       xor     %eax, %eax
> -       ret
> -
> -       .p2align 4
> -L(less4_double_words):
> -       xor     %eax, %eax
> -       test    %dl, %dl
> -       jz      L(next_two_double_words)
> -       and     $15, %dl
> -       jz      L(second_double_word)
> -       mov     (%rdi), %eax
> -       cmp     (%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(second_double_word):
> -       mov     4(%rdi), %eax
> -       cmp     4(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(next_two_double_words):
> -       and     $15, %dh
> -       jz      L(fourth_double_word)
> -       mov     8(%rdi), %eax
> -       cmp     8(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(fourth_double_word):
> -       mov     12(%rdi), %eax
> -       cmp     12(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(less4_double_words_16):
> -       xor     %eax, %eax
> -       test    %dl, %dl
> -       jz      L(next_two_double_words_16)
> -       and     $15, %dl
> -       jz      L(second_double_word_16)
> -       mov     16(%rdi), %eax
> -       cmp     16(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(second_double_word_16):
> -       mov     20(%rdi), %eax
> -       cmp     20(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(next_two_double_words_16):
> -       and     $15, %dh
> -       jz      L(fourth_double_word_16)
> -       mov     24(%rdi), %eax
> -       cmp     24(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(fourth_double_word_16):
> -       mov     28(%rdi), %eax
> -       cmp     28(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(less4_double_words_32):
> -       xor     %eax, %eax
> -       test    %dl, %dl
> -       jz      L(next_two_double_words_32)
> -       and     $15, %dl
> -       jz      L(second_double_word_32)
> -       mov     32(%rdi), %eax
> -       cmp     32(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(second_double_word_32):
> -       mov     36(%rdi), %eax
> -       cmp     36(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(next_two_double_words_32):
> -       and     $15, %dh
> -       jz      L(fourth_double_word_32)
> -       mov     40(%rdi), %eax
> -       cmp     40(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(fourth_double_word_32):
> -       mov     44(%rdi), %eax
> -       cmp     44(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(less4_double_words_48):
> -       xor     %eax, %eax
> -       test    %dl, %dl
> -       jz      L(next_two_double_words_48)
> -       and     $15, %dl
> -       jz      L(second_double_word_48)
> -       mov     48(%rdi), %eax
> -       cmp     48(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(second_double_word_48):
> -       mov     52(%rdi), %eax
> -       cmp     52(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(next_two_double_words_48):
> -       and     $15, %dh
> -       jz      L(fourth_double_word_48)
> -       mov     56(%rdi), %eax
> -       cmp     56(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(fourth_double_word_48):
> -       mov     60(%rdi), %eax
> -       cmp     60(%rsi), %eax
> -       jne     L(nequal)
> -       ret
> -
> -       .p2align 4
> -L(nequal):
> -       mov     $1, %eax
> -       jg      L(nequal_bigger)
> -       neg     %eax
> -
> -L(nequal_bigger):
> -       ret
> -
> -       .p2align 4
> -L(equal):
> -       xor     %rax, %rax
> -       ret
> -
> -END (__wcscmp)
> -#ifndef __wcscmp
> +#include "multiarch/wcscmp-sse2.S"
>  libc_hidden_def (__wcscmp)
>  weak_alias (__wcscmp, wcscmp)
> -#endif
> --
> 2.34.1
>

LGTM.

Thanks.

-- 
H.J.

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S
  2022-07-12 19:28 ` [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S Noah Goldstein
@ 2022-07-13  0:07   ` H.J. Lu
  0 siblings, 0 replies; 8+ messages in thread
From: H.J. Lu @ 2022-07-13  0:07 UTC (permalink / raw)
  To: Noah Goldstein; +Cc: GNU C Library, Carlos O'Donell

On Tue, Jul 12, 2022 at 12:28 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> This commit doesn't affect libc.so.6, its just housekeeping to prepare
> for adding explicit ISA level support.
>
> Tested build on x86_64 and x86_32 with/without multiarch.
> ---
>  .../x86_64/multiarch/strcasecmp_l-sse4_2.S    |    3 +-
>  sysdeps/x86_64/multiarch/strcmp-sse42.S       | 1782 -----------------
>  sysdeps/x86_64/multiarch/strcmp-sse4_2.S      | 1763 +++++++++++++++-
>  sysdeps/x86_64/multiarch/strncase_l-sse4_2.S  |    3 +-
>  sysdeps/x86_64/multiarch/strncmp-sse4_2.S     |    7 +-
>  5 files changed, 1766 insertions(+), 1792 deletions(-)
>  delete mode 100644 sysdeps/x86_64/multiarch/strcmp-sse42.S
>
> diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S b/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
> index 411ab7d283..ac03b95756 100644
> --- a/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
> +++ b/sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S
> @@ -16,6 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#define STRCMP_SSE42 __strcasecmp_l_sse42
>  #define USE_AS_STRCASECMP_L
> -#include "strcmp-sse42.S"
> +#include "strcmp-sse4_2.S"
> diff --git a/sysdeps/x86_64/multiarch/strcmp-sse42.S b/sysdeps/x86_64/multiarch/strcmp-sse42.S
> deleted file mode 100644
> index 60313c647a..0000000000
> --- a/sysdeps/x86_64/multiarch/strcmp-sse42.S
> +++ /dev/null
> @@ -1,1782 +0,0 @@
> -/* strcmp with SSE4.2
> -   Copyright (C) 2009-2022 Free Software Foundation, Inc.
> -   This file is part of the GNU C Library.
> -
> -   The GNU C Library is free software; you can redistribute it and/or
> -   modify it under the terms of the GNU Lesser General Public
> -   License as published by the Free Software Foundation; either
> -   version 2.1 of the License, or (at your option) any later version.
> -
> -   The GNU C Library is distributed in the hope that it will be useful,
> -   but WITHOUT ANY WARRANTY; without even the implied warranty of
> -   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> -   Lesser General Public License for more details.
> -
> -   You should have received a copy of the GNU Lesser General Public
> -   License along with the GNU C Library; if not, see
> -   <https://www.gnu.org/licenses/>.  */
> -
> -#include <sysdep.h>
> -
> -#ifndef STRCMP_SSE42
> -# define STRCMP_SSE42  __strcmp_sse42
> -#endif
> -
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -# include "locale-defines.h"
> -#endif
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
> -   if the new counter > the old one or is 0.  */
> -# define UPDATE_STRNCMP_COUNTER                                \
> -       /* calculate left number to compare */          \
> -       lea     -16(%rcx, %r11), %r9;                   \
> -       cmp     %r9, %r11;                              \
> -       jb      LABEL(strcmp_exitz);                    \
> -       test    %r9, %r9;                               \
> -       je      LABEL(strcmp_exitz);                    \
> -       mov     %r9, %r11
> -#else
> -# define UPDATE_STRNCMP_COUNTER
> -#endif
> -
> -#define SECTION        sse4.2
> -#define GLABEL(l)      l##_sse42
> -
> -#define LABEL(l)       .L##l
> -
> -/* We use 0x1a:
> -       _SIDD_SBYTE_OPS
> -       | _SIDD_CMP_EQUAL_EACH
> -       | _SIDD_NEGATIVE_POLARITY
> -       | _SIDD_LEAST_SIGNIFICANT
> -   on pcmpistri to find out if two 16byte data elements are the same
> -   and the offset of the first different byte.  There are 4 cases:
> -
> -   1. Both 16byte data elements are valid and identical.
> -   2. Both 16byte data elements have EOS and identical.
> -   3. Both 16byte data elements are valid and they differ at offset X.
> -   4. At least one 16byte data element has EOS at offset X.  Two 16byte
> -      data elements must differ at or before offset X.
> -
> -   Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
> -
> -   case                ECX     CFlag   ZFlag   SFlag
> -    1          16        0       0       0
> -    2          16        0       1       1
> -    3           X        1       0       0
> -    4         0 <= X     1      0/1     0/1
> -
> -   We exit from the loop for cases 2, 3 and 4 with jbe which branches
> -   when either CFlag or ZFlag is 1.  If CFlag == 0, we return 0 for
> -   case 2.  */
> -
> -       /* Put all SSE 4.2 functions together.  */
> -       .section .text.SECTION,"ax",@progbits
> -       .align  16
> -       .type   STRCMP_SSE42, @function
> -       .globl  STRCMP_SSE42
> -#ifdef USE_AS_STRCASECMP_L
> -ENTRY (GLABEL(__strcasecmp))
> -       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> -       mov     %fs:(%rax),%RDX_LP
> -
> -       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> -       .p2align 4
> -END (GLABEL(__strcasecmp))
> -       /* FALLTHROUGH to strcasecmp_l.  */
> -#endif
> -#ifdef USE_AS_STRNCASECMP_L
> -ENTRY (GLABEL(__strncasecmp))
> -       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> -       mov     %fs:(%rax),%RCX_LP
> -
> -       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> -       .p2align 4
> -END (GLABEL(__strncasecmp))
> -       /* FALLTHROUGH to strncasecmp_l.  */
> -#endif
> -
> -
> -#define arg arg
> -
> -STRCMP_SSE42:
> -       cfi_startproc
> -       _CET_ENDBR
> -       CALL_MCOUNT
> -
> -/*
> - * This implementation uses SSE to compare up to 16 bytes at a time.
> - */
> -#ifdef USE_AS_STRCASECMP_L
> -       /* We have to fall back on the C implementation for locales
> -          with encodings not matching ASCII for single bytes.  */
> -# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> -       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
> -# else
> -       mov     (%rdx), %RAX_LP
> -# endif
> -       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> -       jne     __strcasecmp_l_nonascii
> -#endif
> -#ifdef USE_AS_STRNCASECMP_L
> -       /* We have to fall back on the C implementation for locales
> -          with encodings not matching ASCII for single bytes.  */
> -# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> -       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
> -# else
> -       mov     (%rcx), %RAX_LP
> -# endif
> -       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> -       jne     __strncasecmp_l_nonascii
> -#endif
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       test    %RDX_LP, %RDX_LP
> -       je      LABEL(strcmp_exitz)
> -       cmp     $1, %RDX_LP
> -       je      LABEL(Byte0)
> -       mov     %RDX_LP, %R11_LP
> -#endif
> -       mov     %esi, %ecx
> -       mov     %edi, %eax
> -/* Use 64bit AND here to avoid long NOP padding.  */
> -       and     $0x3f, %rcx             /* rsi alignment in cache line */
> -       and     $0x3f, %rax             /* rdi alignment in cache line */
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       .section .rodata.cst16,"aM",@progbits,16
> -       .align 16
> -LABEL(lcase_min):
> -       .quad   0x3f3f3f3f3f3f3f3f
> -       .quad   0x3f3f3f3f3f3f3f3f
> -LABEL(lcase_max):
> -       .quad   0x9999999999999999
> -       .quad   0x9999999999999999
> -LABEL(case_add):
> -       .quad   0x2020202020202020
> -       .quad   0x2020202020202020
> -       .previous
> -       movdqa  LABEL(lcase_min)(%rip), %xmm4
> -# define LCASE_MIN_reg %xmm4
> -       movdqa  LABEL(lcase_max)(%rip), %xmm5
> -# define LCASE_MAX_reg %xmm5
> -       movdqa  LABEL(case_add)(%rip), %xmm6
> -# define CASE_ADD_reg %xmm6
> -#endif
> -       cmp     $0x30, %ecx
> -       ja      LABEL(crosscache)/* rsi: 16-byte load will cross cache line */
> -       cmp     $0x30, %eax
> -       ja      LABEL(crosscache)/* rdi: 16-byte load will cross cache line */
> -       movdqu  (%rdi), %xmm1
> -       movdqu  (%rsi), %xmm2
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -# define TOLOWER(reg1, reg2) \
> -       movdqa  LCASE_MIN_reg, %xmm7;                                   \
> -       movdqa  LCASE_MIN_reg, %xmm8;                                   \
> -       paddb   reg1, %xmm7;                                    \
> -       paddb   reg2, %xmm8;                                    \
> -       pcmpgtb LCASE_MAX_reg, %xmm7;                           \
> -       pcmpgtb LCASE_MAX_reg, %xmm8;                           \
> -       pandn   CASE_ADD_reg, %xmm7;                                    \
> -       pandn   CASE_ADD_reg, %xmm8;                                    \
> -       paddb   %xmm7, reg1;                                    \
> -       paddb   %xmm8, reg2
> -
> -       TOLOWER (%xmm1, %xmm2)
> -#else
> -# define TOLOWER(reg1, reg2)
> -#endif
> -       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> -       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> -       pcmpeqb %xmm2, %xmm1            /* compare first 16 bytes for equality */
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %edx
> -       sub     $0xffff, %edx           /* if first 16 bytes are same, edx == 0xffff */
> -       jnz     LABEL(less16bytes)/* If not, find different value or null char */
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)/* finish comparison */
> -#endif
> -       add     $16, %rsi               /* prepare to search next 16 bytes */
> -       add     $16, %rdi               /* prepare to search next 16 bytes */
> -
> -       /*
> -        * Determine source and destination string offsets from 16-byte
> -        * alignment.  Use relative offset difference between the two to
> -        * determine which case below to use.
> -        */
> -       .p2align 4
> -LABEL(crosscache):
> -       and     $0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
> -       and     $0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
> -       mov     $0xffff, %edx           /* for equivalent offset */
> -       xor     %r8d, %r8d
> -       and     $0xf, %ecx              /* offset of rsi */
> -       and     $0xf, %eax              /* offset of rdi */
> -       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char check */
> -       cmp     %eax, %ecx
> -       je      LABEL(ashr_0)           /* rsi and rdi relative offset same */
> -       ja      LABEL(bigger)
> -       mov     %edx, %r8d              /* r8d is offset flag for exit tail */
> -       xchg    %ecx, %eax
> -       xchg    %rsi, %rdi
> -LABEL(bigger):
> -       movdqa  (%rdi), %xmm2
> -       movdqa  (%rsi), %xmm1
> -       lea     15(%rax), %r9
> -       sub     %rcx, %r9
> -       lea     LABEL(unaligned_table)(%rip), %r10
> -       movslq  (%r10, %r9,4), %r9
> -       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> -       lea     (%r10, %r9), %r10
> -       _CET_NOTRACK jmp *%r10          /* jump to corresponding case */
> -
> -/*
> - * The following cases will be handled by ashr_0
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
> - *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
> - */
> -       .p2align 4
> -LABEL(ashr_0):
> -
> -       movdqa  (%rsi), %xmm1
> -       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpeqb (%rdi), %xmm1           /* compare 16 bytes for equality */
> -#else
> -       movdqa  (%rdi), %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm2, %xmm1            /* compare 16 bytes for equality */
> -#endif
> -       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> -       pmovmskb %xmm1, %r9d
> -       shr     %cl, %edx               /* adjust 0xffff for offset */
> -       shr     %cl, %r9d               /* adjust for 16-byte offset */
> -       sub     %r9d, %edx
> -       /*
> -        * edx must be the same with r9d if in left byte (16-rcx) is equal to
> -        * the start from (16-rax) and no null char was seen.
> -        */
> -       jne     LABEL(less32bytes)      /* mismatch or null char */
> -       UPDATE_STRNCMP_COUNTER
> -       mov     $16, %rcx
> -       mov     $16, %r9
> -
> -       /*
> -        * Now both strings are aligned at 16-byte boundary. Loop over strings
> -        * checking 32-bytes per iteration.
> -        */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -       .p2align 4
> -LABEL(ashr_0_use):
> -       movdqa  (%rdi,%rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       lea     16(%rdx), %rdx
> -       jbe     LABEL(ashr_0_exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       movdqa  (%rdi,%rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       lea     16(%rdx), %rdx
> -       jbe     LABEL(ashr_0_exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       jmp     LABEL(ashr_0_use)
> -
> -
> -       .p2align 4
> -LABEL(ashr_0_exit_use):
> -       jnc     LABEL(strcmp_exitz)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     %rcx, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       lea     -16(%rdx, %rcx), %rcx
> -       movzbl  (%rdi, %rcx), %eax
> -       movzbl  (%rsi, %rcx), %edx
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
> -       movl    (%rcx,%rax,4), %eax
> -       movl    (%rcx,%rdx,4), %edx
> -#endif
> -       sub     %edx, %eax
> -       ret
> -
> -
> -
> -/*
> - * The following cases will be handled by ashr_1
> - * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> - *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
> - */
> -       .p2align 4
> -LABEL(ashr_1):
> -       pslldq  $15, %xmm2              /* shift first string to align with second */
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2            /* compare 16 bytes for equality */
> -       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx               /* adjust 0xffff for offset */
> -       shr     %cl, %r9d               /* adjust for 16-byte offset */
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)      /* mismatch or null char seen */
> -       movdqa  (%rdi), %xmm3
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx               /* index for loads*/
> -       mov     $1, %r9d                /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     1(%rdi), %r10
> -       and     $0xfff, %r10            /* offset into 4K page */
> -       sub     $0x1000, %r10           /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_1_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_1_use)
> -
> -LABEL(nibble_ashr_1_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $1, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_1_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $1, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_1_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_1_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $1, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $14, %ecx
> -       ja      LABEL(nibble_ashr_1_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_2
> - * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> - *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
> - */
> -       .p2align 4
> -LABEL(ashr_2):
> -       pslldq  $14, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $2, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     2(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_2_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_2_use)
> -
> -LABEL(nibble_ashr_2_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $2, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_2_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $2, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_2_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_2_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $2, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $13, %ecx
> -       ja      LABEL(nibble_ashr_2_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_3
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> - *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
> - */
> -       .p2align 4
> -LABEL(ashr_3):
> -       pslldq  $13, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $3, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     3(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -LABEL(loop_ashr_3_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_3_use)
> -
> -LABEL(nibble_ashr_3_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $3, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_3_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $3, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_3_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_3_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $3, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $12, %ecx
> -       ja      LABEL(nibble_ashr_3_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_4
> - *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> - *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
> - */
> -       .p2align 4
> -LABEL(ashr_4):
> -       pslldq  $12, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $4, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     4(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_4_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_4_use)
> -
> -LABEL(nibble_ashr_4_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $4, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_4_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $4, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_4_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_4_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $4, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $11, %ecx
> -       ja      LABEL(nibble_ashr_4_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_5
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(11~15)          n - 11               4(15 +(n-11) - n)         ashr_5
> - */
> -       .p2align 4
> -LABEL(ashr_5):
> -       pslldq  $11, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $5, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     5(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_5_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_5_use)
> -
> -LABEL(nibble_ashr_5_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $5, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_5_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -
> -       palignr $5, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_5_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_5_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $5, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $10, %ecx
> -       ja      LABEL(nibble_ashr_5_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_6
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(10~15)          n - 10               5(15 +(n-10) - n)         ashr_6
> - */
> -       .p2align 4
> -LABEL(ashr_6):
> -       pslldq  $10, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $6, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     6(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_6_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_6_use)
> -
> -LABEL(nibble_ashr_6_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $6, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_6_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $6, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_6_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_6_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $6, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $9, %ecx
> -       ja      LABEL(nibble_ashr_6_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - * The following cases will be handled by ashr_7
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> - *        n(9~15)          n - 9                 6(15 +(n - 9) - n)         ashr_7
> - */
> -       .p2align 4
> -LABEL(ashr_7):
> -       pslldq  $9, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $7, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     7(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_7_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_7_use)
> -
> -LABEL(nibble_ashr_7_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $7, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_7_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $7, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_7_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_7_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $7, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $8, %ecx
> -       ja      LABEL(nibble_ashr_7_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_8
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(8~15)          n - 8                 7(15 +(n - 8) - n)         ashr_8
> - */
> -       .p2align 4
> -LABEL(ashr_8):
> -       pslldq  $8, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $8, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     8(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_8_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_8_use)
> -
> -LABEL(nibble_ashr_8_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $8, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_8_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $8, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_8_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_8_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $8, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $7, %ecx
> -       ja      LABEL(nibble_ashr_8_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_9
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(7~15)          n - 7                 8(15 +(n - 7) - n)         ashr_9
> - */
> -       .p2align 4
> -LABEL(ashr_9):
> -       pslldq  $7, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $9, %r9d        /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     9(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_9_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_9_use)
> -
> -LABEL(nibble_ashr_9_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -
> -       palignr $9, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_9_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $9, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_9_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_9_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $9, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $6, %ecx
> -       ja      LABEL(nibble_ashr_9_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_10
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(6~15)          n - 6                 9(15 +(n - 6) - n)         ashr_10
> - */
> -       .p2align 4
> -LABEL(ashr_10):
> -       pslldq  $6, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $10, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     10(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_10_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_10_use)
> -
> -LABEL(nibble_ashr_10_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $10, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_10_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $10, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_10_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_10_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $10, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $5, %ecx
> -       ja      LABEL(nibble_ashr_10_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_11
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(5~15)          n - 5                 10(15 +(n - 5) - n)         ashr_11
> - */
> -       .p2align 4
> -LABEL(ashr_11):
> -       pslldq  $5, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $11, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     11(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_11_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_11_use)
> -
> -LABEL(nibble_ashr_11_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $11, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_11_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $11, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_11_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_11_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $11, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $4, %ecx
> -       ja      LABEL(nibble_ashr_11_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_12
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(4~15)          n - 4                 11(15 +(n - 4) - n)         ashr_12
> - */
> -       .p2align 4
> -LABEL(ashr_12):
> -       pslldq  $4, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $12, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     12(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_12_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_12_use)
> -
> -LABEL(nibble_ashr_12_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $12, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_12_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $12, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_12_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_12_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $12, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $3, %ecx
> -       ja      LABEL(nibble_ashr_12_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_13
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(3~15)          n - 3                 12(15 +(n - 3) - n)         ashr_13
> - */
> -       .p2align 4
> -LABEL(ashr_13):
> -       pslldq  $3, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $13, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     13(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_13_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_13_use)
> -
> -LABEL(nibble_ashr_13_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $13, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_13_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $13, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_13_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_13_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $13, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $2, %ecx
> -       ja      LABEL(nibble_ashr_13_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_14
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(2~15)          n - 2                 13(15 +(n - 2) - n)         ashr_14
> - */
> -       .p2align 4
> -LABEL(ashr_14):
> -       pslldq  $2, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $14, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     14(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_14_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_14_use)
> -
> -LABEL(nibble_ashr_14_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $14, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_14_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $14, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_14_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_14_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $14, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $1, %ecx
> -       ja      LABEL(nibble_ashr_14_restart_use)
> -
> -       jmp     LABEL(nibble_ashr_exit_use)
> -
> -/*
> - *  The following cases will be handled by ashr_15
> - *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> - *        n(1~15)          n - 1                 14(15 +(n - 1) - n)         ashr_15
> - */
> -       .p2align 4
> -LABEL(ashr_15):
> -       pslldq  $1, %xmm2
> -       TOLOWER (%xmm1, %xmm2)
> -       pcmpeqb %xmm1, %xmm2
> -       psubb   %xmm0, %xmm2
> -       pmovmskb %xmm2, %r9d
> -       shr     %cl, %edx
> -       shr     %cl, %r9d
> -       sub     %r9d, %edx
> -       jnz     LABEL(less32bytes)
> -
> -       movdqa  (%rdi), %xmm3
> -
> -       UPDATE_STRNCMP_COUNTER
> -
> -       mov     $16, %rcx       /* index for loads */
> -       mov     $15, %r9d       /* byte position left over from less32bytes case */
> -       /*
> -        * Setup %r10 value allows us to detect crossing a page boundary.
> -        * When %r10 goes positive we have crossed a page boundary and
> -        * need to do a nibble.
> -        */
> -       lea     15(%rdi), %r10
> -       and     $0xfff, %r10    /* offset into 4K page */
> -
> -       sub     $0x1000, %r10   /* subtract 4K pagesize */
> -
> -       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> -
> -       .p2align 4
> -LABEL(loop_ashr_15_use):
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_15_use)
> -
> -LABEL(nibble_ashr_15_restart_use):
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $15, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -
> -       add     $16, %rdx
> -       add     $16, %r10
> -       jg      LABEL(nibble_ashr_15_use)
> -
> -       movdqa  (%rdi, %rdx), %xmm0
> -       palignr $15, -16(%rdi, %rdx), %xmm0
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       jbe     LABEL(exit_use)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     $16, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     $16, %rdx
> -       jmp     LABEL(loop_ashr_15_use)
> -
> -       .p2align 4
> -LABEL(nibble_ashr_15_use):
> -       sub     $0x1000, %r10
> -       movdqa  -16(%rdi, %rdx), %xmm0
> -       psrldq  $15, %xmm0
> -       pcmpistri      $0x3a,%xmm0, %xmm0
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       cmp     %r11, %rcx
> -       jae     LABEL(nibble_ashr_exit_use)
> -#endif
> -       cmp     $0, %ecx
> -       ja      LABEL(nibble_ashr_15_restart_use)
> -
> -LABEL(nibble_ashr_exit_use):
> -#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> -       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> -#else
> -       movdqa  (%rsi,%rdx), %xmm1
> -       TOLOWER (%xmm0, %xmm1)
> -       pcmpistri $0x1a, %xmm1, %xmm0
> -#endif
> -       .p2align 4
> -LABEL(exit_use):
> -       jnc     LABEL(strcmp_exitz)
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     %rcx, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       add     %rcx, %rdx
> -       lea     -16(%rdi, %r9), %rdi
> -       movzbl  (%rdi, %rdx), %eax
> -       movzbl  (%rsi, %rdx), %edx
> -       test    %r8d, %r8d
> -       jz      LABEL(ret_use)
> -       xchg    %eax, %edx
> -LABEL(ret_use):
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
> -       movl    (%rcx,%rdx,4), %edx
> -       movl    (%rcx,%rax,4), %eax
> -#endif
> -
> -       sub     %edx, %eax
> -       ret
> -
> -LABEL(less32bytes):
> -       lea     (%rdi, %rax), %rdi      /* locate the exact address for first operand(rdi) */
> -       lea     (%rsi, %rcx), %rsi      /* locate the exact address for second operand(rsi) */
> -       test    %r8d, %r8d
> -       jz      LABEL(ret)
> -       xchg    %rsi, %rdi              /* recover original order according to flag(%r8d) */
> -
> -       .p2align 4
> -LABEL(ret):
> -LABEL(less16bytes):
> -       bsf     %rdx, %rdx              /* find and store bit index in %rdx */
> -
> -#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> -       sub     %rdx, %r11
> -       jbe     LABEL(strcmp_exitz)
> -#endif
> -       movzbl  (%rsi, %rdx), %ecx
> -       movzbl  (%rdi, %rdx), %eax
> -
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> -       movl    (%rdx,%rcx,4), %ecx
> -       movl    (%rdx,%rax,4), %eax
> -#endif
> -
> -       sub     %ecx, %eax
> -       ret
> -
> -LABEL(strcmp_exitz):
> -       xor     %eax, %eax
> -       ret
> -
> -       .p2align 4
> -       // XXX Same as code above
> -LABEL(Byte0):
> -       movzbl  (%rsi), %ecx
> -       movzbl  (%rdi), %eax
> -
> -#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> -       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> -       movl    (%rdx,%rcx,4), %ecx
> -       movl    (%rdx,%rax,4), %eax
> -#endif
> -
> -       sub     %ecx, %eax
> -       ret
> -       cfi_endproc
> -       .size   STRCMP_SSE42, .-STRCMP_SSE42
> -
> -#undef UCLOW_reg
> -#undef UCHIGH_reg
> -#undef LCQWORD_reg
> -#undef TOLOWER
> -
> -       /* Put all SSE 4.2 functions together.  */
> -       .section .rodata.SECTION,"a",@progbits
> -       .p2align 3
> -LABEL(unaligned_table):
> -       .int    LABEL(ashr_1) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_2) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_3) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_4) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_5) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_6) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_7) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_8) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_9) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_10) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_11) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_12) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_13) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_14) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_15) - LABEL(unaligned_table)
> -       .int    LABEL(ashr_0) - LABEL(unaligned_table)
> -
> -#undef LABEL
> -#undef GLABEL
> -#undef SECTION
> -#undef movdqa
> -#undef movdqu
> -#undef pmovmskb
> -#undef pcmpistri
> -#undef psubb
> -#undef pcmpeqb
> -#undef psrldq
> -#undef pslldq
> -#undef palignr
> -#undef pxor
> -#undef D
> diff --git a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
> index 2c916bafa0..963e208ccb 100644
> --- a/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
> +++ b/sysdeps/x86_64/multiarch/strcmp-sse4_2.S
> @@ -17,5 +17,1766 @@
>     <https://www.gnu.org/licenses/>.  */
>
>  #if IS_IN (libc)
> -# include "strcmp-sse42.S"
> +# include <sysdep.h>
> +
> +# define STRCMP_ISA    _sse42
> +# include "strcmp-naming.h"
> +
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +#  include "locale-defines.h"
> +# endif
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +/* Since the counter, %r11, is unsigned, we branch to strcmp_exitz
> +   if the new counter > the old one or is 0.  */
> +#  define UPDATE_STRNCMP_COUNTER                               \
> +       /* calculate left number to compare */          \
> +       lea     -16(%rcx, %r11), %r9;                   \
> +       cmp     %r9, %r11;                              \
> +       jb      LABEL(strcmp_exitz);                    \
> +       test    %r9, %r9;                               \
> +       je      LABEL(strcmp_exitz);                    \
> +       mov     %r9, %r11
> +# else
> +#  define UPDATE_STRNCMP_COUNTER
> +# endif
> +
> +# define SECTION       sse4.2
> +
> +# define LABEL(l)      .L##l
> +
> +/* We use 0x1a:
> +       _SIDD_SBYTE_OPS
> +       | _SIDD_CMP_EQUAL_EACH
> +       | _SIDD_NEGATIVE_POLARITY
> +       | _SIDD_LEAST_SIGNIFICANT
> +   on pcmpistri to find out if two 16byte data elements are the same
> +   and the offset of the first different byte.  There are 4 cases:
> +
> +   1. Both 16byte data elements are valid and identical.
> +   2. Both 16byte data elements have EOS and identical.
> +   3. Both 16byte data elements are valid and they differ at offset X.
> +   4. At least one 16byte data element has EOS at offset X.  Two 16byte
> +      data elements must differ at or before offset X.
> +
> +   Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
> +
> +   case                ECX     CFlag   ZFlag   SFlag
> +    1          16        0       0       0
> +    2          16        0       1       1
> +    3           X        1       0       0
> +    4         0 <= X     1      0/1     0/1
> +
> +   We exit from the loop for cases 2, 3 and 4 with jbe which branches
> +   when either CFlag or ZFlag is 1.  If CFlag == 0, we return 0 for
> +   case 2.  */
> +
> +       /* Put all SSE 4.2 functions together.  */
> +       .section .text.SECTION,"ax",@progbits
> +       .align  16
> +       .type   STRCMP, @function
> +       .globl  STRCMP
> +# ifdef USE_AS_STRCASECMP_L
> +ENTRY (STRCASECMP)
> +       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> +       mov     %fs:(%rax),%RDX_LP
> +
> +       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> +       .p2align 4
> +END (STRCASECMP)
> +       /* FALLTHROUGH to strcasecmp_l.  */
> +# endif
> +# ifdef USE_AS_STRNCASECMP_L
> +ENTRY (STRCASECMP)
> +       movq    __libc_tsd_LOCALE@gottpoff(%rip),%rax
> +       mov     %fs:(%rax),%RCX_LP
> +
> +       /* Either 1 or 5 bytes (dependeing if CET is enabled).  */
> +       .p2align 4
> +END (STRCASECMP)
> +       /* FALLTHROUGH to strncasecmp_l.  */
> +# endif
> +
> +
> +# define arg arg
> +
> +STRCMP:
> +       cfi_startproc
> +       _CET_ENDBR
> +       CALL_MCOUNT
> +
> +/*
> + * This implementation uses SSE to compare up to 16 bytes at a time.
> + */
> +# ifdef USE_AS_STRCASECMP_L
> +       /* We have to fall back on the C implementation for locales
> +          with encodings not matching ASCII for single bytes.  */
> +#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> +       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rdx), %RAX_LP
> +#  else
> +       mov     (%rdx), %RAX_LP
> +#  endif
> +       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> +       jne     __strcasecmp_l_nonascii
> +# endif
> +# ifdef USE_AS_STRNCASECMP_L
> +       /* We have to fall back on the C implementation for locales
> +          with encodings not matching ASCII for single bytes.  */
> +#  if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
> +       mov     LOCALE_T___LOCALES+LC_CTYPE*LP_SIZE(%rcx), %RAX_LP
> +#  else
> +       mov     (%rcx), %RAX_LP
> +#  endif
> +       testl   $1, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
> +       jne     __strncasecmp_l_nonascii
> +# endif
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       test    %RDX_LP, %RDX_LP
> +       je      LABEL(strcmp_exitz)
> +       cmp     $1, %RDX_LP
> +       je      LABEL(Byte0)
> +       mov     %RDX_LP, %R11_LP
> +# endif
> +       mov     %esi, %ecx
> +       mov     %edi, %eax
> +/* Use 64bit AND here to avoid long NOP padding.  */
> +       and     $0x3f, %rcx             /* rsi alignment in cache line */
> +       and     $0x3f, %rax             /* rdi alignment in cache line */
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       .section .rodata.cst16,"aM",@progbits,16
> +       .align 16
> +LABEL(lcase_min):
> +       .quad   0x3f3f3f3f3f3f3f3f
> +       .quad   0x3f3f3f3f3f3f3f3f
> +LABEL(lcase_max):
> +       .quad   0x9999999999999999
> +       .quad   0x9999999999999999
> +LABEL(case_add):
> +       .quad   0x2020202020202020
> +       .quad   0x2020202020202020
> +       .previous
> +       movdqa  LABEL(lcase_min)(%rip), %xmm4
> +#  define LCASE_MIN_reg %xmm4
> +       movdqa  LABEL(lcase_max)(%rip), %xmm5
> +#  define LCASE_MAX_reg %xmm5
> +       movdqa  LABEL(case_add)(%rip), %xmm6
> +#  define CASE_ADD_reg %xmm6
> +# endif
> +       cmp     $0x30, %ecx
> +       ja      LABEL(crosscache)/* rsi: 16-byte load will cross cache line */
> +       cmp     $0x30, %eax
> +       ja      LABEL(crosscache)/* rdi: 16-byte load will cross cache line */
> +       movdqu  (%rdi), %xmm1
> +       movdqu  (%rsi), %xmm2
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +#  define TOLOWER(reg1, reg2) \
> +       movdqa  LCASE_MIN_reg, %xmm7;                                   \
> +       movdqa  LCASE_MIN_reg, %xmm8;                                   \
> +       paddb   reg1, %xmm7;                                    \
> +       paddb   reg2, %xmm8;                                    \
> +       pcmpgtb LCASE_MAX_reg, %xmm7;                           \
> +       pcmpgtb LCASE_MAX_reg, %xmm8;                           \
> +       pandn   CASE_ADD_reg, %xmm7;                                    \
> +       pandn   CASE_ADD_reg, %xmm8;                                    \
> +       paddb   %xmm7, reg1;                                    \
> +       paddb   %xmm8, reg2
> +
> +       TOLOWER (%xmm1, %xmm2)
> +# else
> +#  define TOLOWER(reg1, reg2)
> +# endif
> +       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char checks */
> +       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> +       pcmpeqb %xmm2, %xmm1            /* compare first 16 bytes for equality */
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %edx
> +       sub     $0xffff, %edx           /* if first 16 bytes are same, edx == 0xffff */
> +       jnz     LABEL(less16bytes)/* If not, find different value or null char */
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)/* finish comparison */
> +# endif
> +       add     $16, %rsi               /* prepare to search next 16 bytes */
> +       add     $16, %rdi               /* prepare to search next 16 bytes */
> +
> +       /*
> +        * Determine source and destination string offsets from 16-byte
> +        * alignment.  Use relative offset difference between the two to
> +        * determine which case below to use.
> +        */
> +       .p2align 4
> +LABEL(crosscache):
> +       and     $0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
> +       and     $0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
> +       mov     $0xffff, %edx           /* for equivalent offset */
> +       xor     %r8d, %r8d
> +       and     $0xf, %ecx              /* offset of rsi */
> +       and     $0xf, %eax              /* offset of rdi */
> +       pxor    %xmm0, %xmm0            /* clear %xmm0 for null char check */
> +       cmp     %eax, %ecx
> +       je      LABEL(ashr_0)           /* rsi and rdi relative offset same */
> +       ja      LABEL(bigger)
> +       mov     %edx, %r8d              /* r8d is offset flag for exit tail */
> +       xchg    %ecx, %eax
> +       xchg    %rsi, %rdi
> +LABEL(bigger):
> +       movdqa  (%rdi), %xmm2
> +       movdqa  (%rsi), %xmm1
> +       lea     15(%rax), %r9
> +       sub     %rcx, %r9
> +       lea     LABEL(unaligned_table)(%rip), %r10
> +       movslq  (%r10, %r9,4), %r9
> +       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> +       lea     (%r10, %r9), %r10
> +       _CET_NOTRACK jmp *%r10          /* jump to corresponding case */
> +
> +/*
> + * The following cases will be handled by ashr_0
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset  corresponding case
> + *        n(0~15)            n(0~15)           15(15+ n-n)         ashr_0
> + */
> +       .p2align 4
> +LABEL(ashr_0):
> +
> +       movdqa  (%rsi), %xmm1
> +       pcmpeqb %xmm1, %xmm0            /* Any null chars? */
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpeqb (%rdi), %xmm1           /* compare 16 bytes for equality */
> +# else
> +       movdqa  (%rdi), %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm2, %xmm1            /* compare 16 bytes for equality */
> +# endif
> +       psubb   %xmm0, %xmm1            /* packed sub of comparison results*/
> +       pmovmskb %xmm1, %r9d
> +       shr     %cl, %edx               /* adjust 0xffff for offset */
> +       shr     %cl, %r9d               /* adjust for 16-byte offset */
> +       sub     %r9d, %edx
> +       /*
> +        * edx must be the same with r9d if in left byte (16-rcx) is equal to
> +        * the start from (16-rax) and no null char was seen.
> +        */
> +       jne     LABEL(less32bytes)      /* mismatch or null char */
> +       UPDATE_STRNCMP_COUNTER
> +       mov     $16, %rcx
> +       mov     $16, %r9
> +
> +       /*
> +        * Now both strings are aligned at 16-byte boundary. Loop over strings
> +        * checking 32-bytes per iteration.
> +        */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +       .p2align 4
> +LABEL(ashr_0_use):
> +       movdqa  (%rdi,%rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       lea     16(%rdx), %rdx
> +       jbe     LABEL(ashr_0_exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       movdqa  (%rdi,%rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       lea     16(%rdx), %rdx
> +       jbe     LABEL(ashr_0_exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       jmp     LABEL(ashr_0_use)
> +
> +
> +       .p2align 4
> +LABEL(ashr_0_exit_use):
> +       jnc     LABEL(strcmp_exitz)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     %rcx, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       lea     -16(%rdx, %rcx), %rcx
> +       movzbl  (%rdi, %rcx), %eax
> +       movzbl  (%rsi, %rcx), %edx
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
> +       movl    (%rcx,%rax,4), %eax
> +       movl    (%rcx,%rdx,4), %edx
> +# endif
> +       sub     %edx, %eax
> +       ret
> +
> +
> +
> +/*
> + * The following cases will be handled by ashr_1
> + * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> + *        n(15)            n -15            0(15 +(n-15) - n)         ashr_1
> + */
> +       .p2align 4
> +LABEL(ashr_1):
> +       pslldq  $15, %xmm2              /* shift first string to align with second */
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2            /* compare 16 bytes for equality */
> +       psubb   %xmm0, %xmm2            /* packed sub of comparison results*/
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx               /* adjust 0xffff for offset */
> +       shr     %cl, %r9d               /* adjust for 16-byte offset */
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)      /* mismatch or null char seen */
> +       movdqa  (%rdi), %xmm3
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx               /* index for loads*/
> +       mov     $1, %r9d                /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     1(%rdi), %r10
> +       and     $0xfff, %r10            /* offset into 4K page */
> +       sub     $0x1000, %r10           /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_1_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_1_use)
> +
> +LABEL(nibble_ashr_1_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $1, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_1_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $1, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_1_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_1_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $1, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $14, %ecx
> +       ja      LABEL(nibble_ashr_1_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_2
> + * rcx(offset of rsi)  rax(offset of rdi)   relative offset    corresponding case
> + *        n(14~15)            n -14         1(15 +(n-14) - n)         ashr_2
> + */
> +       .p2align 4
> +LABEL(ashr_2):
> +       pslldq  $14, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $2, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     2(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_2_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_2_use)
> +
> +LABEL(nibble_ashr_2_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $2, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_2_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $2, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_2_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_2_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $2, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $13, %ecx
> +       ja      LABEL(nibble_ashr_2_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_3
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> + *        n(13~15)            n -13         2(15 +(n-13) - n)         ashr_3
> + */
> +       .p2align 4
> +LABEL(ashr_3):
> +       pslldq  $13, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $3, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     3(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +LABEL(loop_ashr_3_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_3_use)
> +
> +LABEL(nibble_ashr_3_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $3, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_3_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $3, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_3_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_3_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $3, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $12, %ecx
> +       ja      LABEL(nibble_ashr_3_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_4
> + *  rcx(offset of rsi)  rax(offset of rdi)  relative offset     corresponding case
> + *        n(12~15)            n -12         3(15 +(n-12) - n)         ashr_4
> + */
> +       .p2align 4
> +LABEL(ashr_4):
> +       pslldq  $12, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $4, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     4(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_4_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_4_use)
> +
> +LABEL(nibble_ashr_4_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $4, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_4_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $4, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_4_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_4_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $4, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $11, %ecx
> +       ja      LABEL(nibble_ashr_4_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_5
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(11~15)          n - 11               4(15 +(n-11) - n)         ashr_5
> + */
> +       .p2align 4
> +LABEL(ashr_5):
> +       pslldq  $11, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $5, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     5(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_5_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_5_use)
> +
> +LABEL(nibble_ashr_5_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $5, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_5_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +
> +       palignr $5, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_5_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_5_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $5, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $10, %ecx
> +       ja      LABEL(nibble_ashr_5_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_6
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(10~15)          n - 10               5(15 +(n-10) - n)         ashr_6
> + */
> +       .p2align 4
> +LABEL(ashr_6):
> +       pslldq  $10, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $6, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     6(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_6_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_6_use)
> +
> +LABEL(nibble_ashr_6_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $6, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_6_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $6, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_6_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_6_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $6, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $9, %ecx
> +       ja      LABEL(nibble_ashr_6_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + * The following cases will be handled by ashr_7
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset      corresponding case
> + *        n(9~15)          n - 9                 6(15 +(n - 9) - n)         ashr_7
> + */
> +       .p2align 4
> +LABEL(ashr_7):
> +       pslldq  $9, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $7, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     7(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_7_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_7_use)
> +
> +LABEL(nibble_ashr_7_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $7, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_7_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $7, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri       $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_7_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_7_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $7, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $8, %ecx
> +       ja      LABEL(nibble_ashr_7_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_8
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(8~15)          n - 8                 7(15 +(n - 8) - n)         ashr_8
> + */
> +       .p2align 4
> +LABEL(ashr_8):
> +       pslldq  $8, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $8, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     8(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_8_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_8_use)
> +
> +LABEL(nibble_ashr_8_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $8, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_8_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $8, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_8_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_8_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $8, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $7, %ecx
> +       ja      LABEL(nibble_ashr_8_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_9
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(7~15)          n - 7                 8(15 +(n - 7) - n)         ashr_9
> + */
> +       .p2align 4
> +LABEL(ashr_9):
> +       pslldq  $7, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $9, %r9d        /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     9(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_9_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_9_use)
> +
> +LABEL(nibble_ashr_9_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +
> +       palignr $9, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_9_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $9, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_9_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_9_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $9, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $6, %ecx
> +       ja      LABEL(nibble_ashr_9_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_10
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(6~15)          n - 6                 9(15 +(n - 6) - n)         ashr_10
> + */
> +       .p2align 4
> +LABEL(ashr_10):
> +       pslldq  $6, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $10, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     10(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_10_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_10_use)
> +
> +LABEL(nibble_ashr_10_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $10, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_10_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $10, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_10_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_10_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $10, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $5, %ecx
> +       ja      LABEL(nibble_ashr_10_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_11
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(5~15)          n - 5                 10(15 +(n - 5) - n)         ashr_11
> + */
> +       .p2align 4
> +LABEL(ashr_11):
> +       pslldq  $5, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $11, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     11(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_11_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_11_use)
> +
> +LABEL(nibble_ashr_11_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $11, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_11_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $11, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_11_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_11_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $11, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $4, %ecx
> +       ja      LABEL(nibble_ashr_11_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_12
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(4~15)          n - 4                 11(15 +(n - 4) - n)         ashr_12
> + */
> +       .p2align 4
> +LABEL(ashr_12):
> +       pslldq  $4, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $12, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     12(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_12_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_12_use)
> +
> +LABEL(nibble_ashr_12_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $12, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_12_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $12, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_12_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_12_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $12, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $3, %ecx
> +       ja      LABEL(nibble_ashr_12_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_13
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(3~15)          n - 3                 12(15 +(n - 3) - n)         ashr_13
> + */
> +       .p2align 4
> +LABEL(ashr_13):
> +       pslldq  $3, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $13, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     13(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_13_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_13_use)
> +
> +LABEL(nibble_ashr_13_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $13, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_13_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $13, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_13_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_13_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $13, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $2, %ecx
> +       ja      LABEL(nibble_ashr_13_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_14
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(2~15)          n - 2                 13(15 +(n - 2) - n)         ashr_14
> + */
> +       .p2align 4
> +LABEL(ashr_14):
> +       pslldq  $2, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $14, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     14(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_14_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_14_use)
> +
> +LABEL(nibble_ashr_14_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $14, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_14_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $14, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_14_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_14_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $14, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $1, %ecx
> +       ja      LABEL(nibble_ashr_14_restart_use)
> +
> +       jmp     LABEL(nibble_ashr_exit_use)
> +
> +/*
> + *  The following cases will be handled by ashr_15
> + *  rcx(offset of rsi)  rax(offset of rdi)        relative offset       corresponding case
> + *        n(1~15)          n - 1                 14(15 +(n - 1) - n)         ashr_15
> + */
> +       .p2align 4
> +LABEL(ashr_15):
> +       pslldq  $1, %xmm2
> +       TOLOWER (%xmm1, %xmm2)
> +       pcmpeqb %xmm1, %xmm2
> +       psubb   %xmm0, %xmm2
> +       pmovmskb %xmm2, %r9d
> +       shr     %cl, %edx
> +       shr     %cl, %r9d
> +       sub     %r9d, %edx
> +       jnz     LABEL(less32bytes)
> +
> +       movdqa  (%rdi), %xmm3
> +
> +       UPDATE_STRNCMP_COUNTER
> +
> +       mov     $16, %rcx       /* index for loads */
> +       mov     $15, %r9d       /* byte position left over from less32bytes case */
> +       /*
> +        * Setup %r10 value allows us to detect crossing a page boundary.
> +        * When %r10 goes positive we have crossed a page boundary and
> +        * need to do a nibble.
> +        */
> +       lea     15(%rdi), %r10
> +       and     $0xfff, %r10    /* offset into 4K page */
> +
> +       sub     $0x1000, %r10   /* subtract 4K pagesize */
> +
> +       mov     %rcx, %rdx      /* only for offset of sse4 instruction loop*/
> +
> +       .p2align 4
> +LABEL(loop_ashr_15_use):
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_15_use)
> +
> +LABEL(nibble_ashr_15_restart_use):
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $15, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +
> +       add     $16, %rdx
> +       add     $16, %r10
> +       jg      LABEL(nibble_ashr_15_use)
> +
> +       movdqa  (%rdi, %rdx), %xmm0
> +       palignr $15, -16(%rdi, %rdx), %xmm0
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri $0x1a, (%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       jbe     LABEL(exit_use)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     $16, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     $16, %rdx
> +       jmp     LABEL(loop_ashr_15_use)
> +
> +       .p2align 4
> +LABEL(nibble_ashr_15_use):
> +       sub     $0x1000, %r10
> +       movdqa  -16(%rdi, %rdx), %xmm0
> +       psrldq  $15, %xmm0
> +       pcmpistri      $0x3a,%xmm0, %xmm0
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       cmp     %r11, %rcx
> +       jae     LABEL(nibble_ashr_exit_use)
> +# endif
> +       cmp     $0, %ecx
> +       ja      LABEL(nibble_ashr_15_restart_use)
> +
> +LABEL(nibble_ashr_exit_use):
> +# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
> +       pcmpistri      $0x1a,(%rsi,%rdx), %xmm0
> +# else
> +       movdqa  (%rsi,%rdx), %xmm1
> +       TOLOWER (%xmm0, %xmm1)
> +       pcmpistri $0x1a, %xmm1, %xmm0
> +# endif
> +       .p2align 4
> +LABEL(exit_use):
> +       jnc     LABEL(strcmp_exitz)
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     %rcx, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       add     %rcx, %rdx
> +       lea     -16(%rdi, %r9), %rdi
> +       movzbl  (%rdi, %rdx), %eax
> +       movzbl  (%rsi, %rdx), %edx
> +       test    %r8d, %r8d
> +       jz      LABEL(ret_use)
> +       xchg    %eax, %edx
> +LABEL(ret_use):
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
> +       movl    (%rcx,%rdx,4), %edx
> +       movl    (%rcx,%rax,4), %eax
> +# endif
> +
> +       sub     %edx, %eax
> +       ret
> +
> +LABEL(less32bytes):
> +       lea     (%rdi, %rax), %rdi      /* locate the exact address for first operand(rdi) */
> +       lea     (%rsi, %rcx), %rsi      /* locate the exact address for second operand(rsi) */
> +       test    %r8d, %r8d
> +       jz      LABEL(ret)
> +       xchg    %rsi, %rdi              /* recover original order according to flag(%r8d) */
> +
> +       .p2align 4
> +LABEL(ret):
> +LABEL(less16bytes):
> +       bsf     %rdx, %rdx              /* find and store bit index in %rdx */
> +
> +# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
> +       sub     %rdx, %r11
> +       jbe     LABEL(strcmp_exitz)
> +# endif
> +       movzbl  (%rsi, %rdx), %ecx
> +       movzbl  (%rdi, %rdx), %eax
> +
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> +       movl    (%rdx,%rcx,4), %ecx
> +       movl    (%rdx,%rax,4), %eax
> +# endif
> +
> +       sub     %ecx, %eax
> +       ret
> +
> +LABEL(strcmp_exitz):
> +       xor     %eax, %eax
> +       ret
> +
> +       .p2align 4
> +       // XXX Same as code above
> +LABEL(Byte0):
> +       movzbl  (%rsi), %ecx
> +       movzbl  (%rdi), %eax
> +
> +# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
> +       leaq    _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
> +       movl    (%rdx,%rcx,4), %ecx
> +       movl    (%rdx,%rax,4), %eax
> +# endif
> +
> +       sub     %ecx, %eax
> +       ret
> +       cfi_endproc
> +       .size   STRCMP, .-STRCMP
> +
> +# undef UCLOW_reg
> +# undef UCHIGH_reg
> +# undef LCQWORD_reg
> +# undef TOLOWER
> +
> +       /* Put all SSE 4.2 functions together.  */
> +       .section .rodata.SECTION,"a",@progbits
> +       .p2align 3
> +LABEL(unaligned_table):
> +       .int    LABEL(ashr_1) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_2) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_3) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_4) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_5) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_6) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_7) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_8) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_9) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_10) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_11) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_12) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_13) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_14) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_15) - LABEL(unaligned_table)
> +       .int    LABEL(ashr_0) - LABEL(unaligned_table)
> +
> +# undef LABEL
> +# undef GLABEL
> +# undef SECTION
> +# undef movdqa
> +# undef movdqu
> +# undef pmovmskb
> +# undef pcmpistri
> +# undef psubb
> +# undef pcmpeqb
> +# undef psrldq
> +# undef pslldq
> +# undef palignr
> +# undef pxor
> +# undef D
>  #endif
> diff --git a/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S b/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
> index 08e23548c3..1ce5c4e93f 100644
> --- a/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
> +++ b/sysdeps/x86_64/multiarch/strncase_l-sse4_2.S
> @@ -16,6 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#define STRCMP_SSE42 __strncasecmp_l_sse42
>  #define USE_AS_STRNCASECMP_L
> -#include "strcmp-sse42.S"
> +#include "strcmp-sse4_2.S"
> diff --git a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
> index 310a6dbe77..2a02f0c2a6 100644
> --- a/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
> +++ b/sysdeps/x86_64/multiarch/strncmp-sse4_2.S
> @@ -16,8 +16,5 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>
> -#if IS_IN (libc)
> -# define STRCMP_SSE42 __strncmp_sse42
> -# define USE_AS_STRNCMP
> -# include "strcmp-sse42.S"
> -#endif
> +#define USE_AS_STRNCMP
> +#include "strcmp-sse4_2.S"
> --
> 2.34.1
>

LGTM.

Thanks.

-- 
H.J.

^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2022-07-13  0:07 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-07-12 19:28 [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII Noah Goldstein
2022-07-12 19:28 ` [PATCH v1 2/4] x86: Move strcmp SSE2 implementation to multiarch/strcmp-sse2.S Noah Goldstein
2022-07-12 23:57   ` H.J. Lu
2022-07-12 19:28 ` [PATCH v1 3/4] x86: Move wcscmp SSE2 implementation to multiarch/wcscmp-sse2.S Noah Goldstein
2022-07-13  0:05   ` H.J. Lu
2022-07-12 19:28 ` [PATCH v1 4/4] x86: Move strcmp SSE42 implementation to multiarch/strcmp-sse4_2.S Noah Goldstein
2022-07-13  0:07   ` H.J. Lu
2022-07-12 23:30 ` [PATCH v1 1/4] x86: Rename STRCASECMP_NONASCII macro to STRCASECMP_L_NONASCII H.J. Lu

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