From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1921) id D5B163856DEA; Mon, 9 Oct 2023 05:38:16 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D5B163856DEA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1696829896; bh=umSAw08j0MPM/8N/01ux/1zfvcfuwVUp9GuiRWIvl8I=; h=From:To:Subject:Date:From; b=JziBzZXlJ3J4W/4gNaLRaovbpZDxN9J2wEqg1oaWdTUbS2kvIejleeDgY+c5iSUtj kvatv83mGm5b+KeRB2YCu7epIv4XYYBpnRtLZtlklTfwVTv8cqshGd4bdVBEyEseDO Y3WD3JeHuOltao6QW4VIDevKsidlZMlW+V4+Yzp8= Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable From: Sebastian Huber To: newlib-cvs@sourceware.org Subject: [newlib-cygwin] aarch64: Import memrchr.S X-Act-Checkin: newlib-cygwin X-Git-Author: Sebastian Huber X-Git-Refname: refs/heads/master X-Git-Oldrev: 96ec8f868e1a0f5a75badfe4627a41f12cce742d X-Git-Newrev: fe5886a500e66cddf0f57eea3049d25d5f8765e9 Message-Id: <20231009053816.D5B163856DEA@sourceware.org> Date: Mon, 9 Oct 2023 05:38:16 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;h=3Dfe5886a500e= 66cddf0f57eea3049d25d5f8765e9 commit fe5886a500e66cddf0f57eea3049d25d5f8765e9 Author: Sebastian Huber Date: Tue Sep 12 10:33:14 2023 +0200 aarch64: Import memrchr.S =20 Import memrchr.S for AArch64 from: =20 https://github.com/ARM-software/optimized-routines =20 commit 0cf84f26b6b8dcad8287fe30a4dcc1fdabd06560 Author: Sebastian Huber Date: Thu Jul 27 17:14:57 2023 +0200 =20 string: Fix corrupt GNU_PROPERTY_TYPE (5) size =20 For ELF32 the notes alignment is 4 and not 8. Diff: --- newlib/Makefile.in | 40 ++++++++++ newlib/libc/machine/aarch64/Makefile.inc | 2 + newlib/libc/machine/aarch64/memrchr-stub.c | 11 +++ newlib/libc/machine/aarch64/memrchr.S | 115 +++++++++++++++++++++++++= ++++ 4 files changed, 168 insertions(+) diff --git a/newlib/Makefile.in b/newlib/Makefile.in index 5dc9dcc8d..4cb3534cc 100644 --- a/newlib/Makefile.in +++ b/newlib/Makefile.in @@ -596,6 +596,8 @@ check_PROGRAMS =3D @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memcpy.S \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memmove-stub.c \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memmove.S \ +@HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memrchr-stub.c \ +@HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memrchr.S \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memset-stub.c \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/memset.S \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/rawmemchr.S \ @@ -1847,6 +1849,8 @@ am__objects_51 =3D libc/ssp/libc_a-chk_fail.$(OBJEXT)= \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memcpy.$(OBJE= XT) \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memmove-stub.= $(OBJEXT) \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memmove.$(OBJ= EXT) \ +@HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memrchr-stub.= $(OBJEXT) \ +@HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memrchr.$(OBJ= EXT) \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memset-stub.$= (OBJEXT) \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-memset.$(OBJE= XT) \ @HAVE_LIBC_MACHINE_AARCH64_TRUE@ libc/machine/aarch64/libc_a-rawmemchr.$(O= BJEXT) \ @@ -8024,6 +8028,12 @@ libc/machine/aarch64/libc_a-memmove-stub.$(OBJEXT): = \ libc/machine/aarch64/libc_a-memmove.$(OBJEXT): \ libc/machine/aarch64/$(am__dirstamp) \ libc/machine/aarch64/$(DEPDIR)/$(am__dirstamp) +libc/machine/aarch64/libc_a-memrchr-stub.$(OBJEXT): \ + libc/machine/aarch64/$(am__dirstamp) \ + libc/machine/aarch64/$(DEPDIR)/$(am__dirstamp) +libc/machine/aarch64/libc_a-memrchr.$(OBJEXT): \ + libc/machine/aarch64/$(am__dirstamp) \ + libc/machine/aarch64/$(DEPDIR)/$(am__dirstamp) libc/machine/aarch64/libc_a-memset-stub.$(OBJEXT): \ libc/machine/aarch64/$(am__dirstamp) \ libc/machine/aarch64/$(DEPDIR)/$(am__dirstamp) @@ -12730,6 +12740,8 @@ distclean-compile: @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memcpy.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memmove-stub.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memmove.Po@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memrchr-stub.Po@am__quote@ +@AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memrchr.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memset-stub.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -memset.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@libc/machine/aarch64/$(DEPDIR)/libc_a= -rawmemchr-stub.Po@am__quote@ @@ -16711,6 +16723,20 @@ libc/machine/aarch64/libc_a-memmove.obj: libc/mach= ine/aarch64/memmove.S @AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=3D$(DEPDIR) $(CCASDEPMODE) $(de= pcomp) @AMDEPBACKSLASH@ @am__fastdepCCAS_FALSE@ $(AM_V_CPPAS@am__nodep@)$(CCAS) $(DEFS) $(DEFAULT_= INCLUDES) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(= CCASFLAGS) -c -o libc/machine/aarch64/libc_a-memmove.obj `if test -f 'libc/= machine/aarch64/memmove.S'; then $(CYGPATH_W) 'libc/machine/aarch64/memmove= .S'; else $(CYGPATH_W) '$(srcdir)/libc/machine/aarch64/memmove.S'; fi` =20 +libc/machine/aarch64/libc_a-memrchr.o: libc/machine/aarch64/memrchr.S +@am__fastdepCCAS_TRUE@ $(AM_V_CPPAS)$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(= INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(CCASFLAGS) -= MT libc/machine/aarch64/libc_a-memrchr.o -MD -MP -MF libc/machine/aarch64/$= (DEPDIR)/libc_a-memrchr.Tpo -c -o libc/machine/aarch64/libc_a-memrchr.o `te= st -f 'libc/machine/aarch64/memrchr.S' || echo '$(srcdir)/'`libc/machine/aa= rch64/memrchr.S +@am__fastdepCCAS_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/= libc_a-memrchr.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memrchr.Po +@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ $(AM_V_CPPAS)source=3D'libc/machine/aa= rch64/memrchr.S' object=3D'libc/machine/aarch64/libc_a-memrchr.o' libtool= =3Dno @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=3D$(DEPDIR) $(CCASDEPMODE) $(de= pcomp) @AMDEPBACKSLASH@ +@am__fastdepCCAS_FALSE@ $(AM_V_CPPAS@am__nodep@)$(CCAS) $(DEFS) $(DEFAULT_= INCLUDES) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(= CCASFLAGS) -c -o libc/machine/aarch64/libc_a-memrchr.o `test -f 'libc/machi= ne/aarch64/memrchr.S' || echo '$(srcdir)/'`libc/machine/aarch64/memrchr.S + +libc/machine/aarch64/libc_a-memrchr.obj: libc/machine/aarch64/memrchr.S +@am__fastdepCCAS_TRUE@ $(AM_V_CPPAS)$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(= INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(CCASFLAGS) -= MT libc/machine/aarch64/libc_a-memrchr.obj -MD -MP -MF libc/machine/aarch64= /$(DEPDIR)/libc_a-memrchr.Tpo -c -o libc/machine/aarch64/libc_a-memrchr.obj= `if test -f 'libc/machine/aarch64/memrchr.S'; then $(CYGPATH_W) 'libc/mach= ine/aarch64/memrchr.S'; else $(CYGPATH_W) '$(srcdir)/libc/machine/aarch64/m= emrchr.S'; fi` +@am__fastdepCCAS_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/= libc_a-memrchr.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memrchr.Po +@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ $(AM_V_CPPAS)source=3D'libc/machine/aa= rch64/memrchr.S' object=3D'libc/machine/aarch64/libc_a-memrchr.obj' libtool= =3Dno @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCCAS_FALSE@ DEPDIR=3D$(DEPDIR) $(CCASDEPMODE) $(de= pcomp) @AMDEPBACKSLASH@ +@am__fastdepCCAS_FALSE@ $(AM_V_CPPAS@am__nodep@)$(CCAS) $(DEFS) $(DEFAULT_= INCLUDES) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(= CCASFLAGS) -c -o libc/machine/aarch64/libc_a-memrchr.obj `if test -f 'libc/= machine/aarch64/memrchr.S'; then $(CYGPATH_W) 'libc/machine/aarch64/memrchr= .S'; else $(CYGPATH_W) '$(srcdir)/libc/machine/aarch64/memrchr.S'; fi` + libc/machine/aarch64/libc_a-memset.o: libc/machine/aarch64/memset.S @am__fastdepCCAS_TRUE@ $(AM_V_CPPAS)$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(= INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CCASFLAGS) $(CCASFLAGS) -= MT libc/machine/aarch64/libc_a-memset.o -MD -MP -MF libc/machine/aarch64/$(= DEPDIR)/libc_a-memset.Tpo -c -o libc/machine/aarch64/libc_a-memset.o `test = -f 'libc/machine/aarch64/memset.S' || echo '$(srcdir)/'`libc/machine/aarch6= 4/memset.S @am__fastdepCCAS_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/= libc_a-memset.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memset.Po @@ -32981,6 +33007,20 @@ libc/machine/aarch64/libc_a-memmove-stub.obj: libc= /machine/aarch64/memmove-stub. @AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=3D$(DEPDIR) $(CCDEPMODE) $(depcom= p) @AMDEPBACKSLASH@ @am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDE= S) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -c= -o libc/machine/aarch64/libc_a-memmove-stub.obj `if test -f 'libc/machine/= aarch64/memmove-stub.c'; then $(CYGPATH_W) 'libc/machine/aarch64/memmove-st= ub.c'; else $(CYGPATH_W) '$(srcdir)/libc/machine/aarch64/memmove-stub.c'; f= i` =20 +libc/machine/aarch64/libc_a-memrchr-stub.o: libc/machine/aarch64/memrchr-s= tub.c +@am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDE= S) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -MT libc/machi= ne/aarch64/libc_a-memrchr-stub.o -MD -MP -MF libc/machine/aarch64/$(DEPDIR)= /libc_a-memrchr-stub.Tpo -c -o libc/machine/aarch64/libc_a-memrchr-stub.o `= test -f 'libc/machine/aarch64/memrchr-stub.c' || echo '$(srcdir)/'`libc/mac= hine/aarch64/memrchr-stub.c +@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/li= bc_a-memrchr-stub.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memrchr-stub.Po +@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source=3D'libc/machine/aarch64= /memrchr-stub.c' object=3D'libc/machine/aarch64/libc_a-memrchr-stub.o' libt= ool=3Dno @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=3D$(DEPDIR) $(CCDEPMODE) $(depcom= p) @AMDEPBACKSLASH@ +@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDE= S) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -c= -o libc/machine/aarch64/libc_a-memrchr-stub.o `test -f 'libc/machine/aarch= 64/memrchr-stub.c' || echo '$(srcdir)/'`libc/machine/aarch64/memrchr-stub.c + +libc/machine/aarch64/libc_a-memrchr-stub.obj: libc/machine/aarch64/memrchr= -stub.c +@am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDE= S) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -MT libc/machi= ne/aarch64/libc_a-memrchr-stub.obj -MD -MP -MF libc/machine/aarch64/$(DEPDI= R)/libc_a-memrchr-stub.Tpo -c -o libc/machine/aarch64/libc_a-memrchr-stub.o= bj `if test -f 'libc/machine/aarch64/memrchr-stub.c'; then $(CYGPATH_W) 'li= bc/machine/aarch64/memrchr-stub.c'; else $(CYGPATH_W) '$(srcdir)/libc/machi= ne/aarch64/memrchr-stub.c'; fi` +@am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/li= bc_a-memrchr-stub.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memrchr-stub.Po +@AMDEP_TRUE@@am__fastdepCC_FALSE@ $(AM_V_CC)source=3D'libc/machine/aarch64= /memrchr-stub.c' object=3D'libc/machine/aarch64/libc_a-memrchr-stub.obj' li= btool=3Dno @AMDEPBACKSLASH@ +@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=3D$(DEPDIR) $(CCDEPMODE) $(depcom= p) @AMDEPBACKSLASH@ +@am__fastdepCC_FALSE@ $(AM_V_CC@am__nodep@)$(CC) $(DEFS) $(DEFAULT_INCLUDE= S) $(INCLUDES) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -c= -o libc/machine/aarch64/libc_a-memrchr-stub.obj `if test -f 'libc/machine/= aarch64/memrchr-stub.c'; then $(CYGPATH_W) 'libc/machine/aarch64/memrchr-st= ub.c'; else $(CYGPATH_W) '$(srcdir)/libc/machine/aarch64/memrchr-stub.c'; f= i` + libc/machine/aarch64/libc_a-memset-stub.o: libc/machine/aarch64/memset-stu= b.c @am__fastdepCC_TRUE@ $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDE= S) $(libc_a_CPPFLAGS) $(CPPFLAGS) $(libc_a_CFLAGS) $(CFLAGS) -MT libc/machi= ne/aarch64/libc_a-memset-stub.o -MD -MP -MF libc/machine/aarch64/$(DEPDIR)/= libc_a-memset-stub.Tpo -c -o libc/machine/aarch64/libc_a-memset-stub.o `tes= t -f 'libc/machine/aarch64/memset-stub.c' || echo '$(srcdir)/'`libc/machine= /aarch64/memset-stub.c @am__fastdepCC_TRUE@ $(AM_V_at)$(am__mv) libc/machine/aarch64/$(DEPDIR)/li= bc_a-memset-stub.Tpo libc/machine/aarch64/$(DEPDIR)/libc_a-memset-stub.Po diff --git a/newlib/libc/machine/aarch64/Makefile.inc b/newlib/libc/machine= /aarch64/Makefile.inc index 063a2a84a..c749b0d57 100644 --- a/newlib/libc/machine/aarch64/Makefile.inc +++ b/newlib/libc/machine/aarch64/Makefile.inc @@ -7,6 +7,8 @@ libc_a_SOURCES +=3D \ %D%/memcpy.S \ %D%/memmove-stub.c \ %D%/memmove.S \ + %D%/memrchr-stub.c \ + %D%/memrchr.S \ %D%/memset-stub.c \ %D%/memset.S \ %D%/rawmemchr.S \ diff --git a/newlib/libc/machine/aarch64/memrchr-stub.c b/newlib/libc/machi= ne/aarch64/memrchr-stub.c new file mode 100644 index 000000000..48f13bedc --- /dev/null +++ b/newlib/libc/machine/aarch64/memrchr-stub.c @@ -0,0 +1,11 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2023 embedded brains GmbH & Co. KG + */ + +#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) +#include "../../string/memrchr.c" +#else +/* See memrchr.S */ +#endif diff --git a/newlib/libc/machine/aarch64/memrchr.S b/newlib/libc/machine/aa= rch64/memrchr.S new file mode 100644 index 000000000..ba9915cc3 --- /dev/null +++ b/newlib/libc/machine/aarch64/memrchr.S @@ -0,0 +1,115 @@ +/* + * memrchr - find last character in a memory zone. + * + * Copyright (c) 2020-2022, Arm Limited. + * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception + */ + +/* Assumptions: + * + * ARMv8-a, AArch64, Advanced SIMD. + * MTE compatible. + */ + +#if defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED) +/* See memrchr-stub.c */ +#else +#include "asmdefs.h" + +#define srcin x0 +#define chrin w1 +#define cntin x2 +#define result x0 + +#define src x3 +#define cntrem x4 +#define synd x5 +#define shift x6 +#define tmp x7 +#define end x8 +#define endm1 x9 + +#define vrepchr v0 +#define qdata q1 +#define vdata v1 +#define vhas_chr v2 +#define vend v3 +#define dend d3 + +/* + Core algorithm: + For each 16-byte chunk we calculate a 64-bit nibble mask value with fou= r bits + per byte. We take 4 bits of every comparison byte with shift right and = narrow + by 4 instruction. Since the bits in the nibble mask reflect the order in + which things occur in the original string, counting leading zeros ident= ifies + exactly which byte matched. */ + +ENTRY (memrchr) + PTR_ARG (0) + add end, srcin, cntin + sub endm1, end, 1 + bic src, endm1, 15 + cbz cntin, L(nomatch) + ld1 {vdata.16b}, [src] + dup vrepchr.16b, chrin + cmeq vhas_chr.16b, vdata.16b, vrepchr.16b + neg shift, end, lsl 2 + shrn vend.8b, vhas_chr.8h, 4 /* 128->64 */ + fmov synd, dend + lsl synd, synd, shift + cbz synd, L(start_loop) + + clz synd, synd + sub result, endm1, synd, lsr 2 + cmp cntin, synd, lsr 2 + csel result, result, xzr, hi + ret + + nop +L(start_loop): + subs cntrem, src, srcin + b.ls L(nomatch) + + /* Make sure that it won't overread by a 16-byte chunk */ + sub cntrem, cntrem, 1 + tbz cntrem, 4, L(loop32_2) + add src, src, 16 + + .p2align 5 +L(loop32): + ldr qdata, [src, -32]! + cmeq vhas_chr.16b, vdata.16b, vrepchr.16b + umaxp vend.16b, vhas_chr.16b, vhas_chr.16b /* 128->64 */ + fmov synd, dend + cbnz synd, L(end) + +L(loop32_2): + ldr qdata, [src, -16] + subs cntrem, cntrem, 32 + cmeq vhas_chr.16b, vdata.16b, vrepchr.16b + b.lo L(end_2) + umaxp vend.16b, vhas_chr.16b, vhas_chr.16b /* 128->64 */ + fmov synd, dend + cbz synd, L(loop32) +L(end_2): + sub src, src, 16 +L(end): + shrn vend.8b, vhas_chr.8h, 4 /* 128->64 */ + fmov synd, dend + + add tmp, src, 15 +#ifdef __AARCH64EB__ + rbit synd, synd +#endif + clz synd, synd + sub tmp, tmp, synd, lsr 2 + cmp tmp, srcin + csel result, tmp, xzr, hs + ret + +L(nomatch): + mov result, 0 + ret + +END (memrchr) +#endif