From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi1-x236.google.com (mail-oi1-x236.google.com [IPv6:2607:f8b0:4864:20::236]) by sourceware.org (Postfix) with ESMTPS id ED5A63858D3C for ; Tue, 18 Oct 2022 04:15:59 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org ED5A63858D3C Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-oi1-x236.google.com with SMTP id o64so14346987oib.12 for ; Mon, 17 Oct 2022 21:15:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=j4hdCBAAx+m00LMEKGK3TRFmO/hdKkzkFePfLeDugTg=; b=dD5A5mqbex14+oCTDoFu37uY9wVZSs8WnLX/6+IVuwOsfx7ZWwIOTDKL88ozRmclmY 2OEAXisgChtLBlZorZMngQ9vfMgF+hxN9k0OL3YhaRl6wcrY6QBa8Z4VX0jN+H+bDXEy F7c4jCFNLGcAkIBNgsSbQjJSSavnh9/9SfvHvFMM7yLvAS8m4YrlaAoXed+kU0sBdczc acAri/3K+SiRCU9IVLQyWIUqykdtDFtZNmXiMDDLHf3ZKXu+w2mfCH/sH67+iGbbUDjI wtzUcuqdcFWMBm4oBO5DkhKiMTn1/oRSNGHkkSSAZaFVYT+T708r6oYFlWEbYrWRwlv3 eueA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=j4hdCBAAx+m00LMEKGK3TRFmO/hdKkzkFePfLeDugTg=; b=65HheeVkDyCSYJawWJjyYS+3GzzZnI0n775+4C8AxwPG2D/ANyUb3i+nQgE8OW80rv F7ZoHLSikUXbvmebKPxw9B1tC3WcCP/JZHYfH7X3oxQd80EetOnnk3B4kLEW/P0L6HoM 91xf3Jjp+Bic8N4CYOA7gxHL5BPJQ7LI5UJcrTYd3sZSsHV9eJ+Bpx4l72kFzw8k8m92 5FivxitpBzXeIBKAdgmjsP/A3KFTkTxWM9kXjN7rIBzE8lqY216lHq4HOUl2fVQB35d7 DvNnO9cfeh2nY82lq8Dh6bQS+vj3p30w0ceEx3CH6U2MytQHfHo8PX1DukH/IOkmnomT ++CQ== X-Gm-Message-State: ACrzQf2bPz1i5C/bENuODUiArg5JBexGpXC2TZv2BKu+MpDPIwRMqE9i aZXikFrucbLDxF7gR9RdBaoBN4G4781HBw9H3CE= X-Google-Smtp-Source: AMsMyM7WwMT5+8jykamXBi+1tgHfamT4HEBaK9KyamWVc2quX+qNcMfylFqxrhukSburm1bc/s3pdZ73oIQ0oXiu8Os= X-Received: by 2002:a05:6808:1187:b0:353:a617:6acd with SMTP id j7-20020a056808118700b00353a6176acdmr545000oil.105.1666066559163; Mon, 17 Oct 2022 21:15:59 -0700 (PDT) MIME-Version: 1.0 References: <20221018000034.892021-1-skpgkp2@gmail.com> In-Reply-To: From: Sunil Pandey Date: Mon, 17 Oct 2022 21:15:23 -0700 Message-ID: Subject: Re: [PATCH v5] x86_64: Implement evex512 version of memchr, rawmemchr and wmemchr To: Noah Goldstein Cc: libc-alpha@sourceware.org Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-7.2 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 autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Mon, Oct 17, 2022 at 8:02 PM Noah Goldstein wrote: > > On Mon, Oct 17, 2022 at 5:00 PM Sunil K Pandey via Libc-alpha > wrote: > > > > Changes from v4: > > - Replace jmp max in first vector with cmov. > > - Replace jmp max in page cross with cmov. > > Changes from v3: > > - Replace VPCMPEQ in loop with VPTESTNM for 4th vector. > > - Change first vector max check logic for terminating condition. > > - Change page cross logic for terminating condition. > > - Remove unnessary check in align_more block. > > - Remove unnessary VEC(0) initialization. > > - Define USE_WIDE_CHAR in wmemchr. > > > > Changes from v2: > > - Use VEC API > > - Replaced long jump L(zero) in L(endloop) with short jump L(zero_2) > > > > Changes from v1: > > - Change vcmp to vcmpeq and vcmpneq. > > - Restructure unconditional loop jump logic. > > - Improve 4 vector loop logic. > > - Fix bug near page boundary. > > > > This patch implements following evex512 version of string functions. > > evex512 version takes up to 30% less cycle as compared to evex, > > depending on length and alignment. > > > > - memchr function using 512 bit vectors. > > - rawmemchr function using 512 bit vectors. > > - wmemchr function using 512 bit vectors. > > > > Code size data: > > > > memchr-evex.o 762 byte > > memchr-evex512.o 576 byte (-24%) > > > > rawmemchr-evex.o 461 byte > > rawmemchr-evex512.o 432 byte (-6%) > > > > wmemchr-evex.o 794 byte > > wmemchr-evex512.o 576 byte (-27%) > > > > Placeholder function, not used by any processor at the moment. > > > > Fix page cross logic > > > > Fix 2 > > --- > > sysdeps/x86_64/multiarch/Makefile | 3 + > > sysdeps/x86_64/multiarch/ifunc-impl-list.c | 15 + > > sysdeps/x86_64/multiarch/memchr-evex-base.S | 301 +++++++++++++++++++ > > sysdeps/x86_64/multiarch/memchr-evex512.S | 8 + > > sysdeps/x86_64/multiarch/rawmemchr-evex512.S | 7 + > > sysdeps/x86_64/multiarch/wmemchr-evex512.S | 9 + > > 6 files changed, 343 insertions(+) > > create mode 100644 sysdeps/x86_64/multiarch/memchr-evex-base.S > > create mode 100644 sysdeps/x86_64/multiarch/memchr-evex512.S > > create mode 100644 sysdeps/x86_64/multiarch/rawmemchr-evex512.S > > create mode 100644 sysdeps/x86_64/multiarch/wmemchr-evex512.S > > > > diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile > > index df4601c294..e974b1ad97 100644 > > --- a/sysdeps/x86_64/multiarch/Makefile > > +++ b/sysdeps/x86_64/multiarch/Makefile > > @@ -4,6 +4,7 @@ sysdep_routines += \ > > memchr-avx2 \ > > memchr-avx2-rtm \ > > memchr-evex \ > > + memchr-evex512 \ > > memchr-evex-rtm \ > > memchr-sse2 \ > > memcmp-avx2-movbe \ > > @@ -36,6 +37,7 @@ sysdep_routines += \ > > rawmemchr-avx2 \ > > rawmemchr-avx2-rtm \ > > rawmemchr-evex \ > > + rawmemchr-evex512 \ > > rawmemchr-evex-rtm \ > > rawmemchr-sse2 \ > > stpcpy-avx2 \ > > @@ -156,6 +158,7 @@ sysdep_routines += \ > > wmemchr-avx2 \ > > wmemchr-avx2-rtm \ > > wmemchr-evex \ > > + wmemchr-evex512 \ > > wmemchr-evex-rtm \ > > wmemchr-sse2 \ > > wmemcmp-avx2-movbe \ > > diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > index 00a91123d3..529c0b0ef0 100644 > > --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c > > @@ -63,6 +63,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > && CPU_FEATURE_USABLE (AVX512BW) > > && CPU_FEATURE_USABLE (BMI2)), > > __memchr_evex) > > + X86_IFUNC_IMPL_ADD_V4 (array, i, memchr, > > + (CPU_FEATURE_USABLE (AVX512VL) > > + && CPU_FEATURE_USABLE (AVX512BW) > > + && CPU_FEATURE_USABLE (BMI2)), > > + __memchr_evex512) > > X86_IFUNC_IMPL_ADD_V4 (array, i, memchr, > > (CPU_FEATURE_USABLE (AVX512VL) > > && CPU_FEATURE_USABLE (AVX512BW) > > @@ -337,6 +342,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > && CPU_FEATURE_USABLE (AVX512BW) > > && CPU_FEATURE_USABLE (BMI2)), > > __rawmemchr_evex) > > + X86_IFUNC_IMPL_ADD_V4 (array, i, rawmemchr, > > + (CPU_FEATURE_USABLE (AVX512VL) > > + && CPU_FEATURE_USABLE (AVX512BW) > > + && CPU_FEATURE_USABLE (BMI2)), > > + __rawmemchr_evex512) > > X86_IFUNC_IMPL_ADD_V4 (array, i, rawmemchr, > > (CPU_FEATURE_USABLE (AVX512VL) > > && CPU_FEATURE_USABLE (AVX512BW) > > @@ -942,6 +952,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, > > && CPU_FEATURE_USABLE (AVX512BW) > > && CPU_FEATURE_USABLE (BMI2)), > > __wmemchr_evex) > > + X86_IFUNC_IMPL_ADD_V4 (array, i, wmemchr, > > + (CPU_FEATURE_USABLE (AVX512VL) > > + && CPU_FEATURE_USABLE (AVX512BW) > > + && CPU_FEATURE_USABLE (BMI2)), > > + __wmemchr_evex512) > > X86_IFUNC_IMPL_ADD_V4 (array, i, wmemchr, > > (CPU_FEATURE_USABLE (AVX512VL) > > && CPU_FEATURE_USABLE (AVX512BW) > > diff --git a/sysdeps/x86_64/multiarch/memchr-evex-base.S b/sysdeps/x86_64/multiarch/memchr-evex-base.S > > new file mode 100644 > > index 0000000000..ea92983db8 > > --- /dev/null > > +++ b/sysdeps/x86_64/multiarch/memchr-evex-base.S > > @@ -0,0 +1,301 @@ > > +/* Placeholder function, not used by any processor at the moment. > > + 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 > > + . */ > > + > > +/* UNUSED. Exists purely as reference implementation. */ > > + > > +#include > > + > > +#if ISA_SHOULD_BUILD (4) > > + > > +# include > > + > > +# ifdef USE_AS_WMEMCHR > > +# define CHAR_SIZE 4 > > +# define VPBROADCAST vpbroadcastd > > +# define VPCMPEQ vpcmpeqd > > +# define VPCMPNE vpcmpneqd > > +# define VPMINU vpminud > > +# define VPTESTNM vptestnmd > > +# else > > +# define CHAR_SIZE 1 > > +# define VPBROADCAST vpbroadcastb > > +# define VPCMPEQ vpcmpeqb > > +# define VPCMPNE vpcmpneqb > > +# define VPMINU vpminub > > +# define VPTESTNM vptestnmb > > +# endif > > + > > +# define PAGE_SIZE 4096 > > +# define CHAR_PER_VEC (VEC_SIZE / CHAR_SIZE) > > + > > + .section SECTION(.text), "ax", @progbits > > +/* Aligning entry point to 64 byte, provides better performance for > > + one vector length string. */ > > +ENTRY_P2ALIGN (MEMCHR, 6) > > +# ifndef USE_AS_RAWMEMCHR > > + /* Check for zero length. */ > > + test %RDX_LP, %RDX_LP > > + jz L(zero) > > + > > +# ifdef __ILP32__ > > + /* Clear the upper 32 bits. */ > > + movl %edx, %edx > > +# endif > > +# endif > > + > > + /* Broadcast CHAR to VMM(1). */ > > + VPBROADCAST %esi, %VMM(1) > > + movl %edi, %eax > > + andl $(PAGE_SIZE - 1), %eax > > + cmpl $(PAGE_SIZE - VEC_SIZE), %eax > > + ja L(page_cross) > > + > > + /* Compare [w]char for null, mask bit will be set for match. */ > > + VPCMPEQ (%rdi), %VMM(1), %k0 > > + > > + KMOV %k0, %VRCX > > +# ifndef USE_AS_RAWMEMCHR > > + mov %rdx, %rsi > > + bsf %VRCX, %VRSI > > + cmp $CHAR_PER_VEC, %rsi > > + ja L(align_more) > > +# ifdef USE_AS_WMEMCHR > > + leaq (%rdi, %rsi, CHAR_SIZE), %rdi > > +# else > > + addq %rsi, %rdi > > +# endif > > + xor %eax, %eax > > + cmp %rsi, %rdx > > + cmova %rdi, %rax > > +# else > > + bsf %VRCX, %VRAX > > + jz L(align_more) > > + add %rdi, %rax > > +# endif > > + ret > > + > > + .p2align 5,,5 > > +L(page_cross): > > + movl %eax, %ecx > > + andl $(VEC_SIZE - 1), %ecx > > +# ifdef USE_AS_WMEMCHR > > + shrl $2, %ecx > > +# endif > > + xorq %rdi, %rax > > + VPCMPEQ (PAGE_SIZE - VEC_SIZE)(%rax), %VMM(1), %k0 > > + KMOV %k0, %VRSI > > + shr %cl, %VRSI > > +# ifndef USE_AS_RAWMEMCHR > > + jnz L(page_cross_end) > > + movl $CHAR_PER_VEC, %eax > > + sub %ecx, %eax > > + cmp %rax, %rdx > > + ja L(align_more) > > +# else > > + jz L(align_more) > > +# endif > > + > > +L(page_cross_end): > > +# ifndef USE_AS_RAWMEMCHR > > + bsf %VRSI, %VRCX > > + leaq (%rdi, %rcx, CHAR_SIZE), %rdi > > + xor %eax, %eax > > + cmp %rcx, %rdx > > + cmova %rdi, %rax > > You have a bug here test case: > > align % 4096 = 4036 > len = 8 > pos = N/A (no char in bounds). > Can you please help reproduce this issue. I tried adding this test case but it didn't fail. do_test (4036, 20, 8, 8, 0x9B); > I think the `bsf %rsi, %rcx` shouldn't have rcx as a destination > or you need to move `rdx` to `rcx` first. > > > +# else > > + bsf %VRSI, %VRAX > > + add %rdi, %rax > > +# endif > > + ret > > + > > +# ifndef USE_AS_RAWMEMCHR > > +L(zero): > > + xorl %eax, %eax > > + ret > > +# endif > > + > > +L(ret_vec_x2): > > + subq $-VEC_SIZE, %rdi > > +L(ret_vec_x1): > > + bsf %VRAX, %VRAX > > +# ifndef USE_AS_RAWMEMCHR > > + cmp %rax, %rdx > > + jbe L(zero) > > +# endif > > +# ifdef USE_AS_WMEMCHR > > + leaq (%rdi, %rax, CHAR_SIZE), %rax > > +# else > > + add %rdi, %rax > > +# endif > > + ret > > + > > + .p2align 5,,5 > > +L(align_more): > > +# ifndef USE_AS_RAWMEMCHR > > + mov %rdi, %rax > > +# endif > > + subq $-VEC_SIZE, %rdi > > + /* Align rdi to VEC_SIZE. */ > > + andq $-VEC_SIZE, %rdi > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq %rdi, %rax > > +# ifdef USE_AS_WMEMCHR > > + sar $2, %rax > > +# endif > > + addq %rax, %rdx > > +# endif > > + > > + /* Loop unroll 4 times for 4 vector loop. */ > > + VPCMPEQ (%rdi), %VMM(1), %k0 > > + > > + KMOV %k0, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x1) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero) > > +# endif > > + > > + VPCMPEQ VEC_SIZE(%rdi), %VMM(1), %k0 > > + > > + KMOV %k0, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x2) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero) > > +# endif > > + > > + VPCMPEQ (VEC_SIZE * 2)(%rdi), %VMM(1), %k0 > > + > > + KMOV %k0, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x3) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero) > > +# endif > > + > > + VPCMPEQ (VEC_SIZE * 3)(%rdi), %VMM(1), %k0 > > + > > + KMOV %k0, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x4) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero) > > + /* Save pointer to find alignment adjustment. */ > > + movq %rdi, %rax > > +# endif > > + /* Align address to VEC_SIZE * 4 for loop. */ > > + andq $-(VEC_SIZE * 4), %rdi > > + > > + /* Add alignment difference to rdx. */ > > +# ifndef USE_AS_RAWMEMCHR > > + subq %rdi, %rax > > +# ifdef USE_AS_WMEMCHR > > + shr $2, %VRAX > > +# endif > > + addq %rax, %rdx > > +# endif > > + > > + /* 4 vector loop. */ > > + .p2align 5,,11 > > +L(loop): > > + > > + VPCMPNE (VEC_SIZE * 4)(%rdi), %VMM(1), %k1 > > + vpxorq (VEC_SIZE * 5)(%rdi), %VMM(1), %VMM(2) > > + vpxorq (VEC_SIZE * 6)(%rdi), %VMM(1), %VMM(3) > > + VPCMPEQ (VEC_SIZE * 7)(%rdi), %VMM(1), %k3 > > + VPMINU %VMM(2), %VMM(3), %VMM(3){%k1}{z} > > + VPTESTNM %VMM(3), %VMM(3), %k2 > > + > > + subq $-(VEC_SIZE * 4), %rdi > > + KORTEST %k2, %k3 > > +# ifdef USE_AS_RAWMEMCHR > > + jz L(loop) > > +# else > > + jnz L(loopend) > > + subq $(CHAR_PER_VEC * 4), %rdx > > + ja L(loop) > > +L(zero_2): > > + xor %eax, %eax > > + ret > > +# endif > > + > > +L(loopend): > > + VPCMPEQ (%rdi), %VMM(1), %k1 > > + KMOV %k1, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x1) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero_2) > > +# endif > > + > > + VPCMPEQ VEC_SIZE(%rdi), %VMM(1), %k1 > > + KMOV %k1, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x2) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero_2) > > +# endif > > + > > + VPCMPEQ (VEC_SIZE * 2)(%rdi), %VMM(1), %k1 > > + KMOV %k1, %VRAX > > + test %VRAX, %VRAX > > + jnz L(ret_vec_x3) > > + > > +# ifndef USE_AS_RAWMEMCHR > > + subq $CHAR_PER_VEC, %rdx > > + jbe L(zero_2) > > +# endif > > + > > + /* At this point null [w]char must be in the fourth vector so no > > + need to check. */ > > + KMOV %k3, %VRAX > > + > > +L(ret_vec_x4): > > + bsf %VRAX, %VRAX > > +# ifndef USE_AS_RAWMEMCHR > > + cmp %rax, %rdx > > + jbe L(zero) > > +# endif > > + leaq (VEC_SIZE * 3)(%rdi, %rax, CHAR_SIZE), %rax > > + ret > > + > > + .p2align 5,,5 > > +L(ret_vec_x3): > > + bsf %VRAX, %VRAX > > +# ifndef USE_AS_RAWMEMCHR > > + cmp %rax, %rdx > > + jbe L(zero) > > +# endif > > + leaq (VEC_SIZE * 2)(%rdi, %rax, CHAR_SIZE), %rax > > + ret > > + > > +END (MEMCHR) > > +#endif > > diff --git a/sysdeps/x86_64/multiarch/memchr-evex512.S b/sysdeps/x86_64/multiarch/memchr-evex512.S > > new file mode 100644 > > index 0000000000..002f8c8489 > > --- /dev/null > > +++ b/sysdeps/x86_64/multiarch/memchr-evex512.S > > @@ -0,0 +1,8 @@ > > +# ifndef MEMCHR > > +# define MEMCHR __memchr_evex512 > > +# endif > > + > > +#include "x86-evex512-vecs.h" > > +#include "reg-macros.h" > > + > > +#include "memchr-evex-base.S" > > diff --git a/sysdeps/x86_64/multiarch/rawmemchr-evex512.S b/sysdeps/x86_64/multiarch/rawmemchr-evex512.S > > new file mode 100644 > > index 0000000000..302d3cb055 > > --- /dev/null > > +++ b/sysdeps/x86_64/multiarch/rawmemchr-evex512.S > > @@ -0,0 +1,7 @@ > > +#ifndef RAWMEMCHR > > +# define RAWMEMCHR __rawmemchr_evex512 > > +#endif > > +#define USE_AS_RAWMEMCHR 1 > > +#define MEMCHR RAWMEMCHR > > + > > +#include "memchr-evex512.S" > > diff --git a/sysdeps/x86_64/multiarch/wmemchr-evex512.S b/sysdeps/x86_64/multiarch/wmemchr-evex512.S > > new file mode 100644 > > index 0000000000..78ec4ee5ad > > --- /dev/null > > +++ b/sysdeps/x86_64/multiarch/wmemchr-evex512.S > > @@ -0,0 +1,9 @@ > > +#ifndef WMEMCHR > > +# define WMEMCHR __wmemchr_evex512 > > +#endif > > + > > +#define MEMCHR WMEMCHR > > +#define USE_AS_WMEMCHR 1 > > + > > +#define USE_WIDE_CHAR 1 > > +#include "memchr-evex512.S" > > -- > > 2.36.1 > >