From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vk1-xa35.google.com (mail-vk1-xa35.google.com [IPv6:2607:f8b0:4864:20::a35]) by sourceware.org (Postfix) with ESMTPS id 433853835825; Thu, 12 May 2022 19:53:12 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 433853835825 Received: by mail-vk1-xa35.google.com with SMTP id q136so3196626vke.10; Thu, 12 May 2022 12:53:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=b6rCUu7aFIibZ8lV5vkT3/0smLMcQfEy9wKCVH/sElI=; b=ITN72utM7YmWygkrbbqDUAHm9GKU/rgFFvCWuVmEYPNcr9QCvpEOKFna16q+UyyKa8 usCDVTrHh2lKUpvtz4VT4tAVWjPzZJZDSpuCyPkhsRA7wkoJe50dcf12dj0Jd+zdppvx tmLEEGQ4ofKYKVJZZnOpuxgsdRHBPQUqN3OSEqfiQXHE/F3FdRfpAnELqSoaWYUgfF4D vJ2SJNv6JA8B0lisFi9PWwU6WWYel7X0Tfb7WxAzcTWhqhaGUqao9voUeIZ7l49A/Fv6 V3cjp595Bi7fkEl7fMO37bk5MM44ENHWSBFGWLRY/vsXy7H1BtlljJB7q718euDSg3kj J9rg== X-Gm-Message-State: AOAM530UG+AqKSWyYeQBeRX+Fstbuj+nJEk57jXs0Po8HgfD14L5RuMD PoVgmQD6QnNZYNBC2fppyj2ZItCVQ5kCgNkA64EOupTa X-Google-Smtp-Source: ABdhPJwgxraQJPLK0RiYXsqYQbQZnWrMF8Mc+Ta8alYQdQDBSYVufVAne1DgaDGakOpIWYP0S5QWpsyOoR6mEOB3i5U= X-Received: by 2002:a05:6122:890:b0:352:b096:d44b with SMTP id 16-20020a056122089000b00352b096d44bmr1078517vkf.41.1652385191279; Thu, 12 May 2022 12:53:11 -0700 (PDT) MIME-Version: 1.0 References: <20220323215734.3927131-21-goldstein.w.n@gmail.com> <20220324235613.2445581-1-goldstein.w.n@gmail.com> <20220324235613.2445581-2-goldstein.w.n@gmail.com> In-Reply-To: From: Sunil Pandey Date: Thu, 12 May 2022 12:52:35 -0700 Message-ID: Subject: Re: [PATCH v4 22/23] x86: Add EVEX optimized str{n}casecmp To: Noah Goldstein , Libc-stable Mailing List Cc: "H.J. Lu" , GNU C Library Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM, GIT_PATCH_0, HK_RANDOM_ENVFROM, HK_RANDOM_FROM, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: libc-stable@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-stable mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 May 2022 19:53:16 -0000 On Thu, May 12, 2022 at 12:47 PM Sunil Pandey wrote: > > On Fri, Mar 25, 2022 at 11:20 AM Noah Goldstein via Libc-alpha > wrote: > > > > On Fri, Mar 25, 2022 at 1:15 PM H.J. Lu wrote: > > > > > > On Thu, Mar 24, 2022 at 4:56 PM Noah Goldstein wrote: > > > > > > > > geometric_mean(N=40) of all benchmarks EVEX / SSE42: .621 > > > > > > > > All string/memory tests pass. > > > > Reviewed-by: H.J. Lu > > > > --- > > > > sysdeps/x86_64/multiarch/Makefile | 2 + > > > > sysdeps/x86_64/multiarch/ifunc-impl-list.c | 16 + > > > > sysdeps/x86_64/multiarch/ifunc-strcasecmp.h | 5 + > > > > sysdeps/x86_64/multiarch/strcasecmp_l-evex.S | 23 ++ > > > > sysdeps/x86_64/multiarch/strcmp-evex.S | 290 ++++++++++++++++--- > > > > sysdeps/x86_64/multiarch/strncase_l-evex.S | 25 ++ > > > > 6 files changed, 321 insertions(+), 40 deletions(-) > > > > create mode 100644 sysdeps/x86_64/multiarch/strcasecmp_l-evex.S > > > > create mode 100644 sysdeps/x86_64/multiarch/strncase_l-evex.S > > > > > > > > diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile > > > > index 06e1848823..35d80dc2ff 100644 > > > > --- a/sysdeps/x86_64/multiarch/Makefile > > > > +++ b/sysdeps/x86_64/multiarch/Makefile > > > > @@ -57,6 +57,7 @@ sysdep_routines += \ > > > > strcasecmp_l-avx \ > > > > strcasecmp_l-avx2 \ > > > > strcasecmp_l-avx2-rtm \ > > > > + strcasecmp_l-evex \ > > > > strcasecmp_l-sse2 \ > > > > strcasecmp_l-sse4_2 \ > > > > strcasecmp_l-ssse3 \ > > > > @@ -97,6 +98,7 @@ sysdep_routines += \ > > > > strncase_l-avx \ > > > > strncase_l-avx2 \ > > > > strncase_l-avx2-rtm \ > > > > + strncase_l-evex \ > > > > strncase_l-sse2 \ > > > > strncase_l-sse4_2 \ > > > > strncase_l-ssse3 \ > > > > diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > > > index 3c556d07ac..f1a4d3dac2 100644 > > > > --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > > > +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > > > @@ -436,6 +436,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > > > > > > > /* Support sysdeps/x86_64/multiarch/strcasecmp_l.c. */ > > > > IFUNC_IMPL (i, name, strcasecmp, > > > > + IFUNC_IMPL_ADD (array, i, strcasecmp, > > > > + (CPU_FEATURE_USABLE (AVX512VL) > > > > + && CPU_FEATURE_USABLE (AVX512BW)), > > > > + __strcasecmp_evex) > > > > IFUNC_IMPL_ADD (array, i, strcasecmp, > > > > CPU_FEATURE_USABLE (AVX2), > > > > __strcasecmp_avx2) > > > > @@ -456,6 +460,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > > > > > > > /* Support sysdeps/x86_64/multiarch/strcasecmp_l.c. */ > > > > IFUNC_IMPL (i, name, strcasecmp_l, > > > > + IFUNC_IMPL_ADD (array, i, strcasecmp, > > > > + (CPU_FEATURE_USABLE (AVX512VL) > > > > + && CPU_FEATURE_USABLE (AVX512BW)), > > > > + __strcasecmp_l_evex) > > > > IFUNC_IMPL_ADD (array, i, strcasecmp, > > > > CPU_FEATURE_USABLE (AVX2), > > > > __strcasecmp_l_avx2) > > > > @@ -590,6 +598,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > > > > > > > /* Support sysdeps/x86_64/multiarch/strncase_l.c. */ > > > > IFUNC_IMPL (i, name, strncasecmp, > > > > + IFUNC_IMPL_ADD (array, i, strncasecmp, > > > > + (CPU_FEATURE_USABLE (AVX512VL) > > > > + && CPU_FEATURE_USABLE (AVX512BW)), > > > > + __strncasecmp_evex) > > > > IFUNC_IMPL_ADD (array, i, strncasecmp, > > > > CPU_FEATURE_USABLE (AVX2), > > > > __strncasecmp_avx2) > > > > @@ -611,6 +623,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > > > > > > > /* Support sysdeps/x86_64/multiarch/strncase_l.c. */ > > > > IFUNC_IMPL (i, name, strncasecmp_l, > > > > + IFUNC_IMPL_ADD (array, i, strncasecmp, > > > > + (CPU_FEATURE_USABLE (AVX512VL) > > > > + && CPU_FEATURE_USABLE (AVX512BW)), > > > > + __strncasecmp_l_evex) > > > > IFUNC_IMPL_ADD (array, i, strncasecmp, > > > > CPU_FEATURE_USABLE (AVX2), > > > > __strncasecmp_l_avx2) > > > > diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h > > > > index c4de111fd0..bf0d146e7f 100644 > > > > --- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h > > > > +++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h > > > > @@ -25,6 +25,7 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden; > > > > extern __typeof (REDIRECT_NAME) OPTIMIZE (avx) attribute_hidden; > > > > extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden; > > > > extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden; > > > > +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex) attribute_hidden; > > > > > > > > static inline void * > > > > IFUNC_SELECTOR (void) > > > > @@ -34,6 +35,10 @@ IFUNC_SELECTOR (void) > > > > if (CPU_FEATURE_USABLE_P (cpu_features, AVX2) > > > > && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) > > > > { > > > > + if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL) > > > > + && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)) > > > > + return OPTIMIZE (evex); > > > > + > > > > if (CPU_FEATURE_USABLE_P (cpu_features, RTM)) > > > > return OPTIMIZE (avx2_rtm); > > > > > > > > diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-evex.S b/sysdeps/x86_64/multiarch/strcasecmp_l-evex.S > > > > new file mode 100644 > > > > index 0000000000..58642db748 > > > > --- /dev/null > > > > +++ b/sysdeps/x86_64/multiarch/strcasecmp_l-evex.S > > > > @@ -0,0 +1,23 @@ > > > > +/* strcasecmp_l optimized with EVEX. > > > > + Copyright (C) 2017-2022 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 > > > > + . */ > > > > + > > > > +#ifndef STRCMP > > > > +# define STRCMP __strcasecmp_l_evex > > > > +#endif > > > > +#define USE_AS_STRCASECMP_L > > > > +#include "strcmp-evex.S" > > > > diff --git a/sysdeps/x86_64/multiarch/strcmp-evex.S b/sysdeps/x86_64/multiarch/strcmp-evex.S > > > > index 56d8c118e4..2a5b3ce037 100644 > > > > --- a/sysdeps/x86_64/multiarch/strcmp-evex.S > > > > +++ b/sysdeps/x86_64/multiarch/strcmp-evex.S > > > > @@ -19,6 +19,9 @@ > > > > #if IS_IN (libc) > > > > > > > > # include > > > > +# if defined USE_AS_STRCASECMP_L > > > > +# include "locale-defines.h" > > > > +# endif > > > > > > > > # ifndef STRCMP > > > > # define STRCMP __strcmp_evex > > > > @@ -34,19 +37,29 @@ > > > > # define VMOVA vmovdqa64 > > > > > > > > # ifdef USE_AS_WCSCMP > > > > -# define TESTEQ subl $0xff, > > > > +# ifndef OVERFLOW_STRCMP > > > > +# define OVERFLOW_STRCMP __wcscmp_evex > > > > +# endif > > > > + > > > > +# define TESTEQ subl $0xff, > > > > /* Compare packed dwords. */ > > > > # define VPCMP vpcmpd > > > > # define VPMINU vpminud > > > > # define VPTESTM vptestmd > > > > +# define VPTESTNM vptestnmd > > > > /* 1 dword char == 4 bytes. */ > > > > # define SIZE_OF_CHAR 4 > > > > # else > > > > +# ifndef OVERFLOW_STRCMP > > > > +# define OVERFLOW_STRCMP __strcmp_evex > > > > +# endif > > > > + > > > > # define TESTEQ incl > > > > /* Compare packed bytes. */ > > > > # define VPCMP vpcmpb > > > > # define VPMINU vpminub > > > > # define VPTESTM vptestmb > > > > +# define VPTESTNM vptestnmb > > > > /* 1 byte char == 1 byte. */ > > > > # define SIZE_OF_CHAR 1 > > > > # endif > > > > @@ -73,11 +86,16 @@ > > > > # define VEC_OFFSET (-VEC_SIZE) > > > > # endif > > > > > > > > -# define XMMZERO xmm16 > > > > # define XMM0 xmm17 > > > > # define XMM1 xmm18 > > > > > > > > -# define YMMZERO ymm16 > > > > +# define XMM10 xmm27 > > > > +# define XMM11 xmm28 > > > > +# define XMM12 xmm29 > > > > +# define XMM13 xmm30 > > > > +# define XMM14 xmm31 > > > > + > > > > + > > > > # define YMM0 ymm17 > > > > # define YMM1 ymm18 > > > > # define YMM2 ymm19 > > > > @@ -89,6 +107,87 @@ > > > > # define YMM8 ymm25 > > > > # define YMM9 ymm26 > > > > # define YMM10 ymm27 > > > > +# define YMM11 ymm28 > > > > +# define YMM12 ymm29 > > > > +# define YMM13 ymm30 > > > > +# define YMM14 ymm31 > > > > + > > > > +# ifdef USE_AS_STRCASECMP_L > > > > +# define BYTE_LOOP_REG OFFSET_REG > > > > +# else > > > > +# define BYTE_LOOP_REG ecx > > > > +# endif > > > > + > > > > +# ifdef USE_AS_STRCASECMP_L > > > > +# ifdef USE_AS_STRNCMP > > > > +# define STRCASECMP __strncasecmp_evex > > > > +# define LOCALE_REG rcx > > > > +# define LOCALE_REG_LP RCX_LP > > > > +# define STRCASECMP_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 > > > > +# endif > > > > +# endif > > > > + > > > > +# define LCASE_MIN_YMM %YMM12 > > > > +# define LCASE_MAX_YMM %YMM13 > > > > +# define CASE_ADD_YMM %YMM14 > > > > + > > > > +# define LCASE_MIN_XMM %XMM12 > > > > +# define LCASE_MAX_XMM %XMM13 > > > > +# define CASE_ADD_XMM %XMM14 > > > > + > > > > + /* NB: wcsncmp uses r11 but strcasecmp is never used in > > > > + conjunction with wcscmp. */ > > > > +# define TOLOWER_BASE %r11 > > > > + > > > > +# ifdef USE_AS_STRCASECMP_L > > > > +# define _REG(x, y) x ## y > > > > +# define REG(x, y) _REG(x, y) > > > > +# define TOLOWER(reg1, reg2, ext) \ > > > > + vpsubb REG(LCASE_MIN_, ext), reg1, REG(%ext, 10); \ > > > > + vpsubb REG(LCASE_MIN_, ext), reg2, REG(%ext, 11); \ > > > > + vpcmpub $1, REG(LCASE_MAX_, ext), REG(%ext, 10), %k5; \ > > > > + vpcmpub $1, REG(LCASE_MAX_, ext), REG(%ext, 11), %k6; \ > > > > + vpaddb reg1, REG(CASE_ADD_, ext), reg1{%k5}; \ > > > > + vpaddb reg2, REG(CASE_ADD_, ext), reg2{%k6} > > > > + > > > > +# define TOLOWER_gpr(src, dst) movl (TOLOWER_BASE, src, 4), dst > > > > +# define TOLOWER_YMM(...) TOLOWER(__VA_ARGS__, YMM) > > > > +# define TOLOWER_XMM(...) TOLOWER(__VA_ARGS__, XMM) > > > > + > > > > +# define CMP_R1_R2(s1_reg, s2_reg, reg_out, ext) \ > > > > + TOLOWER (s1_reg, s2_reg, ext); \ > > > > + VPCMP $0, s1_reg, s2_reg, reg_out > > > > + > > > > +# define CMP_R1_S2(s1_reg, s2_mem, s2_reg, reg_out, ext) \ > > > > + VMOVU s2_mem, s2_reg; \ > > > > + CMP_R1_R2(s1_reg, s2_reg, reg_out, ext) > > > > + > > > > +# define CMP_R1_R2_YMM(...) CMP_R1_R2(__VA_ARGS__, YMM) > > > > +# define CMP_R1_R2_XMM(...) CMP_R1_R2(__VA_ARGS__, XMM) > > > > + > > > > +# define CMP_R1_S2_YMM(...) CMP_R1_S2(__VA_ARGS__, YMM) > > > > +# define CMP_R1_S2_XMM(...) CMP_R1_S2(__VA_ARGS__, XMM) > > > > + > > > > +# else > > > > +# define TOLOWER_gpr(...) > > > > +# define TOLOWER_YMM(...) > > > > +# define TOLOWER_XMM(...) > > > > + > > > > +# define CMP_R1_R2_YMM(s1_reg, s2_reg, reg_out) \ > > > > + VPCMP $0, s2_reg, s1_reg, reg_out > > > > + > > > > +# define CMP_R1_R2_XMM(...) CMP_R1_R2_YMM(__VA_ARGS__) > > > > + > > > > +# define CMP_R1_S2_YMM(s1_reg, s2_mem, unused, reg_out) \ > > > > + VPCMP $0, s2_mem, s1_reg, reg_out > > > > + > > > > +# define CMP_R1_S2_XMM(...) CMP_R1_S2_YMM(__VA_ARGS__) > > > > +# endif > > > > > > > > /* Warning! > > > > wcscmp/wcsncmp have to use SIGNED comparison for elements. > > > > @@ -112,8 +211,45 @@ > > > > returned. */ > > > > > > > > .section .text.evex, "ax", @progbits > > > > -ENTRY(STRCMP) > > > > + .align 16 > > > > + .type STRCMP, @function > > > > + .globl STRCMP > > > > + .hidden STRCMP > > > > + > > > > +# ifdef USE_AS_STRCASECMP_L > > > > +ENTRY (STRCASECMP) > > > > + movq __libc_tsd_LOCALE@gottpoff(%rip), %rax > > > > + mov %fs:(%rax), %LOCALE_REG_LP > > > > + > > > > + /* Either 1 or 5 bytes (dependeing if CET is enabled). */ > > > > + .p2align 4 > > > > +END (STRCASECMP) > > > > + /* FALLTHROUGH to strcasecmp/strncasecmp_l. */ > > > > +# endif > > > > + > > > > + .p2align 4 > > > > +STRCMP: > > > > + cfi_startproc > > > > + _CET_ENDBR > > > > + CALL_MCOUNT > > > > + > > > > +# if defined 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(%LOCALE_REG), %RAX_LP > > > > +# else > > > > + mov (%LOCALE_REG), %RAX_LP > > > > +# endif > > > > + testl $1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax) > > > > + jne STRCASECMP_NONASCII > > > > + leaq _nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE > > > > +# endif > > > > + > > > > # ifdef USE_AS_STRNCMP > > > > + /* Don't overwrite LOCALE_REG (rcx) until we have pass > > > > + L(one_or_less). Otherwise we might use the wrong locale in > > > > + the OVERFLOW_STRCMP (strcasecmp_l). */ > > > > # ifdef __ILP32__ > > > > /* Clear the upper 32 bits. */ > > > > movl %edx, %edx > > > > @@ -125,6 +261,32 @@ ENTRY(STRCMP) > > > > actually bound the buffer. */ > > > > jle L(one_or_less) > > > > # endif > > > > + > > > > +# if defined USE_AS_STRCASECMP_L > > > > + .section .rodata.cst32, "aM", @progbits, 32 > > > > + .align 32 > > > > +L(lcase_min): > > > > + .quad 0x4141414141414141 > > > > + .quad 0x4141414141414141 > > > > + .quad 0x4141414141414141 > > > > + .quad 0x4141414141414141 > > > > +L(lcase_max): > > > > + .quad 0x1a1a1a1a1a1a1a1a > > > > + .quad 0x1a1a1a1a1a1a1a1a > > > > + .quad 0x1a1a1a1a1a1a1a1a > > > > + .quad 0x1a1a1a1a1a1a1a1a > > > > +L(case_add): > > > > + .quad 0x2020202020202020 > > > > + .quad 0x2020202020202020 > > > > + .quad 0x2020202020202020 > > > > + .quad 0x2020202020202020 > > > > + .previous > > > > + > > > > + vmovdqa64 L(lcase_min)(%rip), LCASE_MIN_YMM > > > > + vmovdqa64 L(lcase_max)(%rip), LCASE_MAX_YMM > > > > + vmovdqa64 L(case_add)(%rip), CASE_ADD_YMM > > > > +# endif > > > > + > > > > movl %edi, %eax > > > > orl %esi, %eax > > > > /* Shift out the bits irrelivant to page boundary ([63:12]). */ > > > > @@ -139,7 +301,7 @@ L(no_page_cross): > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > /* Each bit cleared in K1 represents a mismatch or a null CHAR > > > > in YMM0 and 32 bytes at (%rsi). */ > > > > - VPCMP $0, (%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_STRNCMP > > > > cmpq $CHAR_PER_VEC, %rdx > > > > @@ -169,6 +331,8 @@ L(return_vec_0): > > > > # else > > > > movzbl (%rdi, %rcx), %eax > > > > movzbl (%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > # endif > > > > L(ret0): > > > > @@ -188,11 +352,15 @@ L(ret_zero): > > > > > > > > .p2align 4,, 5 > > > > L(one_or_less): > > > > +# ifdef USE_AS_STRCASECMP_L > > > > + /* Set locale argument for strcasecmp. */ > > > > + movq %LOCALE_REG, %rdx > > > > +# endif > > > > jb L(ret_zero) > > > > -# ifdef USE_AS_WCSCMP > > > > /* 'nbe' covers the case where length is negative (large > > > > unsigned). */ > > > > - jnbe __wcscmp_evex > > > > + jnbe OVERFLOW_STRCMP > > > > +# ifdef USE_AS_WCSCMP > > > > movl (%rdi), %edx > > > > xorl %eax, %eax > > > > cmpl (%rsi), %edx > > > > @@ -201,11 +369,10 @@ L(one_or_less): > > > > negl %eax > > > > orl $1, %eax > > > > # else > > > > - /* 'nbe' covers the case where length is negative (large > > > > - unsigned). */ > > > > - jnbe __strcmp_evex > > > > movzbl (%rdi), %eax > > > > movzbl (%rsi), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > # endif > > > > L(ret1): > > > > @@ -233,6 +400,8 @@ L(return_vec_1): > > > > # else > > > > movzbl VEC_SIZE(%rdi, %rcx), %eax > > > > movzbl VEC_SIZE(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > # endif > > > > L(ret2): > > > > @@ -270,6 +439,8 @@ L(return_vec_2): > > > > # else > > > > movzbl (VEC_SIZE * 2)(%rdi, %rcx), %eax > > > > movzbl (VEC_SIZE * 2)(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > # endif > > > > L(ret3): > > > > @@ -290,6 +461,8 @@ L(return_vec_3): > > > > # else > > > > movzbl (VEC_SIZE * 3)(%rdi, %rcx), %eax > > > > movzbl (VEC_SIZE * 3)(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > # endif > > > > L(ret4): > > > > @@ -303,7 +476,7 @@ L(more_3x_vec): > > > > /* Safe to compare 4x vectors. */ > > > > VMOVU (VEC_SIZE)(%rdi), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (VEC_SIZE)(%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, VEC_SIZE(%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_1) > > > > @@ -315,14 +488,14 @@ L(more_3x_vec): > > > > > > > > VMOVU (VEC_SIZE * 2)(%rdi), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (VEC_SIZE * 2)(%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (VEC_SIZE * 2)(%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_2) > > > > > > > > VMOVU (VEC_SIZE * 3)(%rdi), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (VEC_SIZE * 3)(%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (VEC_SIZE * 3)(%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_3) > > > > @@ -381,7 +554,6 @@ L(prepare_loop_aligned): > > > > subl %esi, %eax > > > > andl $(PAGE_SIZE - 1), %eax > > > > > > > > - vpxorq %YMMZERO, %YMMZERO, %YMMZERO > > > > > > > > /* Loop 4x comparisons at a time. */ > > > > .p2align 4 > > > > @@ -413,22 +585,35 @@ L(loop_skip_page_cross_check): > > > > /* A zero CHAR in YMM9 means that there is a null CHAR. */ > > > > VPMINU %YMM8, %YMM9, %YMM9 > > > > > > > > - /* Each bit set in K1 represents a non-null CHAR in YMM8. */ > > > > + /* Each bit set in K1 represents a non-null CHAR in YMM9. */ > > > > VPTESTM %YMM9, %YMM9, %k1 > > > > - > > > > +# ifndef USE_AS_STRCASECMP_L > > > > vpxorq (VEC_SIZE * 0)(%rsi), %YMM0, %YMM1 > > > > vpxorq (VEC_SIZE * 1)(%rsi), %YMM2, %YMM3 > > > > vpxorq (VEC_SIZE * 2)(%rsi), %YMM4, %YMM5 > > > > /* Ternary logic to xor (VEC_SIZE * 3)(%rsi) with YMM6 while > > > > oring with YMM1. Result is stored in YMM6. */ > > > > vpternlogd $0xde, (VEC_SIZE * 3)(%rsi), %YMM1, %YMM6 > > > > - > > > > +# else > > > > + VMOVU (VEC_SIZE * 0)(%rsi), %YMM1 > > > > + TOLOWER_YMM (%YMM0, %YMM1) > > > > + VMOVU (VEC_SIZE * 1)(%rsi), %YMM3 > > > > + TOLOWER_YMM (%YMM2, %YMM3) > > > > + VMOVU (VEC_SIZE * 2)(%rsi), %YMM5 > > > > + TOLOWER_YMM (%YMM4, %YMM5) > > > > + VMOVU (VEC_SIZE * 3)(%rsi), %YMM7 > > > > + TOLOWER_YMM (%YMM6, %YMM7) > > > > + vpxorq %YMM0, %YMM1, %YMM1 > > > > + vpxorq %YMM2, %YMM3, %YMM3 > > > > + vpxorq %YMM4, %YMM5, %YMM5 > > > > + vpternlogd $0xde, %YMM7, %YMM1, %YMM6 > > > > +# endif > > > > /* Or together YMM3, YMM5, and YMM6. */ > > > > vpternlogd $0xfe, %YMM3, %YMM5, %YMM6 > > > > > > > > > > > > /* A non-zero CHAR in YMM6 represents a mismatch. */ > > > > - VPCMP $0, %YMMZERO, %YMM6, %k0{%k1} > > > > + VPTESTNM %YMM6, %YMM6, %k0{%k1} > > > > kmovd %k0, %LOOP_REG > > > > > > > > TESTEQ %LOOP_REG > > > > @@ -437,13 +622,13 @@ L(loop_skip_page_cross_check): > > > > > > > > /* Find which VEC has the mismatch of end of string. */ > > > > VPTESTM %YMM0, %YMM0, %k1 > > > > - VPCMP $0, %YMMZERO, %YMM1, %k0{%k1} > > > > + VPTESTNM %YMM1, %YMM1, %k0{%k1} > > > > kmovd %k0, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_0_end) > > > > > > > > VPTESTM %YMM2, %YMM2, %k1 > > > > - VPCMP $0, %YMMZERO, %YMM3, %k0{%k1} > > > > + VPTESTNM %YMM3, %YMM3, %k0{%k1} > > > > kmovd %k0, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_1_end) > > > > @@ -457,7 +642,7 @@ L(return_vec_2_3_end): > > > > # endif > > > > > > > > VPTESTM %YMM4, %YMM4, %k1 > > > > - VPCMP $0, %YMMZERO, %YMM5, %k0{%k1} > > > > + VPTESTNM %YMM5, %YMM5, %k0{%k1} > > > > kmovd %k0, %ecx > > > > TESTEQ %ecx > > > > # if CHAR_PER_VEC <= 16 > > > > @@ -493,6 +678,8 @@ L(return_vec_3_end): > > > > # else > > > > movzbl (VEC_SIZE * 2)(%rdi, %LOOP_REG64), %eax > > > > movzbl (VEC_SIZE * 2)(%rsi, %LOOP_REG64), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > xorl %r8d, %eax > > > > subl %r8d, %eax > > > > @@ -545,6 +732,8 @@ L(return_vec_0_end): > > > > # else > > > > movzbl (%rdi, %rcx), %eax > > > > movzbl (%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > /* Flip `eax` if `rdi` and `rsi` where swapped in page cross > > > > logic. Subtract `r8d` after xor for zero case. */ > > > > @@ -569,6 +758,8 @@ L(return_vec_1_end): > > > > # else > > > > movzbl VEC_SIZE(%rdi, %rcx), %eax > > > > movzbl VEC_SIZE(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > xorl %r8d, %eax > > > > subl %r8d, %eax > > > > @@ -598,7 +789,7 @@ L(page_cross_during_loop): > > > > > > > > VMOVA (%rdi), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_0_end) > > > > @@ -619,8 +810,7 @@ L(less_1x_vec_till_page_cross): > > > > been loaded earlier so must be valid. */ > > > > VMOVU -VEC_SIZE(%rdi, %rax), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, -VEC_SIZE(%rsi, %rax), %YMM0, %k1{%k2} > > > > - > > > > + CMP_R1_S2_YMM (%YMM0, -VEC_SIZE(%rsi, %rax), %YMM1, %k1){%k2} > > > > /* Mask of potentially valid bits. The lower bits can be out of > > > > range comparisons (but safe regarding page crosses). */ > > > > > > > > @@ -642,6 +832,8 @@ L(less_1x_vec_till_page_cross): > > > > > > > > # ifdef USE_AS_STRNCMP > > > > # ifdef USE_AS_WCSCMP > > > > + /* NB: strcasecmp not used with WCSCMP so this access to r11 is > > > > + safe. */ > > > > movl %eax, %r11d > > > > shrl $2, %r11d > > > > cmpq %r11, %rdx > > > > @@ -679,6 +871,8 @@ L(return_page_cross_cmp_mem): > > > > # else > > > > movzbl VEC_OFFSET(%rdi, %rcx), %eax > > > > movzbl VEC_OFFSET(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > xorl %r8d, %eax > > > > subl %r8d, %eax > > > > @@ -709,7 +903,7 @@ L(more_2x_vec_till_page_cross): > > > > > > > > VMOVA VEC_SIZE(%rdi), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, VEC_SIZE(%rsi), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, VEC_SIZE(%rsi), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_1_end) > > > > @@ -724,14 +918,14 @@ L(more_2x_vec_till_page_cross): > > > > /* Safe to include comparisons from lower bytes. */ > > > > VMOVU -(VEC_SIZE * 2)(%rdi, %rax), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, -(VEC_SIZE * 2)(%rsi, %rax), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, -(VEC_SIZE * 2)(%rsi, %rax), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_page_cross_0) > > > > > > > > VMOVU -(VEC_SIZE * 1)(%rdi, %rax), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, -(VEC_SIZE * 1)(%rsi, %rax), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, -(VEC_SIZE * 1)(%rsi, %rax), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(return_vec_page_cross_1) > > > > @@ -740,6 +934,8 @@ L(more_2x_vec_till_page_cross): > > > > /* Must check length here as length might proclude reading next > > > > page. */ > > > > # ifdef USE_AS_WCSCMP > > > > + /* NB: strcasecmp not used with WCSCMP so this access to r11 is > > > > + safe. */ > > > > movl %eax, %r11d > > > > shrl $2, %r11d > > > > cmpq %r11, %rdx > > > > @@ -754,12 +950,19 @@ L(more_2x_vec_till_page_cross): > > > > VMOVA (VEC_SIZE * 3)(%rdi), %YMM6 > > > > VPMINU %YMM4, %YMM6, %YMM9 > > > > VPTESTM %YMM9, %YMM9, %k1 > > > > - > > > > +# ifndef USE_AS_STRCASECMP_L > > > > vpxorq (VEC_SIZE * 2)(%rsi), %YMM4, %YMM5 > > > > /* YMM6 = YMM5 | ((VEC_SIZE * 3)(%rsi) ^ YMM6). */ > > > > vpternlogd $0xde, (VEC_SIZE * 3)(%rsi), %YMM5, %YMM6 > > > > - > > > > - VPCMP $0, %YMMZERO, %YMM6, %k0{%k1} > > > > +# else > > > > + VMOVU (VEC_SIZE * 2)(%rsi), %YMM5 > > > > + TOLOWER_YMM (%YMM4, %YMM5) > > > > + VMOVU (VEC_SIZE * 3)(%rsi), %YMM7 > > > > + TOLOWER_YMM (%YMM6, %YMM7) > > > > + vpxorq %YMM4, %YMM5, %YMM5 > > > > + vpternlogd $0xde, %YMM7, %YMM5, %YMM6 > > > > +# endif > > > > + VPTESTNM %YMM6, %YMM6, %k0{%k1} > > > > kmovd %k0, %LOOP_REG > > > > TESTEQ %LOOP_REG > > > > jnz L(return_vec_2_3_end) > > > > @@ -815,6 +1018,8 @@ L(return_vec_page_cross_1): > > > > # else > > > > movzbl VEC_OFFSET(%rdi, %rcx), %eax > > > > movzbl VEC_OFFSET(%rsi, %rcx), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > xorl %r8d, %eax > > > > subl %r8d, %eax > > > > @@ -871,7 +1076,7 @@ L(page_cross): > > > > L(page_cross_loop): > > > > VMOVU (%rdi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > TESTEQ %ecx > > > > jnz L(check_ret_vec_page_cross) > > > > @@ -895,7 +1100,7 @@ L(page_cross_loop): > > > > */ > > > > VMOVU (%rdi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM0 > > > > VPTESTM %YMM0, %YMM0, %k2 > > > > - VPCMP $0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM0, %k1{%k2} > > > > + CMP_R1_S2_YMM (%YMM0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %YMM1, %k1){%k2} > > > > > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_STRNCMP > > > > @@ -930,6 +1135,8 @@ L(ret_vec_page_cross_cont): > > > > # else > > > > movzbl (%rdi, %rcx, SIZE_OF_CHAR), %eax > > > > movzbl (%rsi, %rcx, SIZE_OF_CHAR), %ecx > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %ecx) > > > > subl %ecx, %eax > > > > xorl %r8d, %eax > > > > subl %r8d, %eax > > > > @@ -989,7 +1196,7 @@ L(less_1x_vec_till_page): > > > > /* Use 16 byte comparison. */ > > > > vmovdqu (%rdi), %xmm0 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, (%rsi), %xmm0, %k1{%k2} > > > > + CMP_R1_S2_XMM (%xmm0, (%rsi), %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_WCSCMP > > > > subl $0xf, %ecx > > > > @@ -1009,7 +1216,7 @@ L(less_1x_vec_till_page): > > > > # endif > > > > vmovdqu (%rdi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm0 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm0, %k1{%k2} > > > > + CMP_R1_S2_XMM (%xmm0, (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_WCSCMP > > > > subl $0xf, %ecx > > > > @@ -1048,7 +1255,7 @@ L(less_16_till_page): > > > > vmovq (%rdi), %xmm0 > > > > vmovq (%rsi), %xmm1 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, %xmm1, %xmm0, %k1{%k2} > > > > + CMP_R1_R2_XMM (%xmm0, %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_WCSCMP > > > > subl $0x3, %ecx > > > > @@ -1068,7 +1275,7 @@ L(less_16_till_page): > > > > vmovq (%rdi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm0 > > > > vmovq (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm1 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, %xmm1, %xmm0, %k1{%k2} > > > > + CMP_R1_R2_XMM (%xmm0, %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > # ifdef USE_AS_WCSCMP > > > > subl $0x3, %ecx > > > > @@ -1128,7 +1335,7 @@ L(ret_less_8_wcs): > > > > vmovd (%rdi), %xmm0 > > > > vmovd (%rsi), %xmm1 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, %xmm1, %xmm0, %k1{%k2} > > > > + CMP_R1_R2_XMM (%xmm0, %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > subl $0xf, %ecx > > > > jnz L(check_ret_vec_page_cross) > > > > @@ -1143,7 +1350,7 @@ L(ret_less_8_wcs): > > > > vmovd (%rdi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm0 > > > > vmovd (%rsi, %OFFSET_REG64, SIZE_OF_CHAR), %xmm1 > > > > VPTESTM %xmm0, %xmm0, %k2 > > > > - VPCMP $0, %xmm1, %xmm0, %k1{%k2} > > > > + CMP_R1_R2_XMM (%xmm0, %xmm1, %k1){%k2} > > > > kmovd %k1, %ecx > > > > subl $0xf, %ecx > > > > jnz L(check_ret_vec_page_cross) > > > > @@ -1176,7 +1383,9 @@ L(less_4_till_page): > > > > L(less_4_loop): > > > > movzbl (%rdi), %eax > > > > movzbl (%rsi, %rdi), %ecx > > > > - subl %ecx, %eax > > > > + TOLOWER_gpr (%rax, %eax) > > > > + TOLOWER_gpr (%rcx, %BYTE_LOOP_REG) > > > > + subl %BYTE_LOOP_REG, %eax > > > > jnz L(ret_less_4_loop) > > > > testl %ecx, %ecx > > > > jz L(ret_zero_4_loop) > > > > @@ -1203,5 +1412,6 @@ L(ret_less_4_loop): > > > > subl %r8d, %eax > > > > ret > > > > # endif > > > > -END(STRCMP) > > > > + cfi_endproc > > > > + .size STRCMP, .-STRCMP > > > > #endif > > > > diff --git a/sysdeps/x86_64/multiarch/strncase_l-evex.S b/sysdeps/x86_64/multiarch/strncase_l-evex.S > > > > new file mode 100644 > > > > index 0000000000..8a5af3695c > > > > --- /dev/null > > > > +++ b/sysdeps/x86_64/multiarch/strncase_l-evex.S > > > > @@ -0,0 +1,25 @@ > > > > +/* strncasecmp_l optimized with EVEX. > > > > + Copyright (C) 2017-2022 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 > > > > + . */ > > > > + > > > > +#ifndef STRCMP > > > > +# define STRCMP __strncasecmp_l_evex > > > > +#endif > > > > +#define OVERFLOW_STRCMP __strcasecmp_l_evex > > > > +#define USE_AS_STRCASECMP_L > > > > +#define USE_AS_STRNCMP > > > > +#include "strcmp-evex.S" > > > > -- > > > > 2.25.1 > > > > > > > > > > LGTM. > > > > > > Reviewed-by: H.J. Lu > > > > Thanks, pushed the patchset. > > > > > > Thanks. > > > > > > -- > > > H.J. > > I would like to backport this patch to release branches. > Any comments or objections? > > Conflict resolution patch attached. > > --Sunil Please ignore, this patch doesn't have any conflict. --Sunil --Sunil