Sign Up
Log In
Log In
or
Sign Up
Places
All Projects
Status Monitor
Collapse sidebar
home:dpitchumani
glibc_15SP3_GA
glibc-2.31-HTM-vzeroupper.diff
Overview
Repositories
Revisions
Requests
Users
Attributes
Meta
File glibc-2.31-HTM-vzeroupper.diff of Package glibc_15SP3_GA
From 93fa2ae78df8c44656ad6c488c7e1707ee4c2d01 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" <hjl.tools@gmail.com> Date: Fri, 26 Feb 2021 05:36:59 -0800 Subject: [PATCH 01/10] x86: Set Prefer_No_VZEROUPPER and add Prefer_AVX2_STRCMP 1. Set Prefer_No_VZEROUPPER if RTM is usable to avoid RTM abort triggered by VZEROUPPER inside a transactionally executing RTM region. 2. Since to compare 2 32-byte strings, 256-bit EVEX strcmp requires 2 loads, 3 VPCMPs and 2 KORDs while AVX2 strcmp requires 1 load, 2 VPCMPEQs, 1 VPMINU and 1 VPMOVMSKB, AVX2 strcmp is faster than EVEX strcmp. Add Prefer_AVX2_STRCMP to prefer AVX2 strcmp family functions. --- sysdeps/x86/cpu-features.c | 20 ++++++++++++++++++-- sysdeps/x86/cpu-features.h | 2 ++ sysdeps/x86/cpu-tunables.c | 3 +++ 3 files changed, 23 insertions(+), 2 deletions(-) Index: glibc-2.31/sysdeps/x86/cpu-features.c =================================================================== --- glibc-2.31.orig/sysdeps/x86/cpu-features.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86/cpu-features.c 2021-03-10 09:01:00.920639086 +0100 @@ -424,8 +424,24 @@ init_cpu_features (struct cpu_features * cpu_features->feature[index_arch_Prefer_No_VZEROUPPER] |= bit_arch_Prefer_No_VZEROUPPER; else - cpu_features->feature[index_arch_Prefer_No_AVX512] - |= bit_arch_Prefer_No_AVX512; + { + cpu_features->feature[index_arch_Prefer_No_AVX512] + |= bit_arch_Prefer_No_AVX512; + + /* Avoid RTM abort triggered by VZEROUPPER inside a + transactionally executing RTM region. */ + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + cpu_features->feature[index_arch_Prefer_No_VZEROUPPER] + |= bit_arch_Prefer_No_VZEROUPPER; + + /* Since to compare 2 32-byte strings, 256-bit EVEX strcmp + requires 2 loads, 3 VPCMPs and 2 KORDs while AVX2 strcmp + requires 1 load, 2 VPCMPEQs, 1 VPMINU and 1 VPMOVMSKB, + AVX2 strcmp is faster than EVEX strcmp. */ + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable)) + cpu_features->feature[index_arch_Prefer_AVX2_STRCMP] + |= bit_arch_Prefer_AVX2_STRCMP; + } } /* This spells out "AuthenticAMD" or "HygonGenuine". */ else if ((ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65) Index: glibc-2.31/sysdeps/x86/cpu-features.h =================================================================== --- glibc-2.31.orig/sysdeps/x86/cpu-features.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86/cpu-features.h 2021-03-10 09:01:00.920639086 +0100 @@ -897,6 +897,7 @@ extern const struct cpu_features *__get_ #define bit_arch_Prefer_FSRM (1u << 13) #define bit_arch_Prefer_No_AVX512 (1u << 14) #define bit_arch_MathVec_Prefer_No_AVX512 (1u << 15) +#define bit_arch_Prefer_AVX2_STRCMP (1u << 16) #define index_arch_Fast_Rep_String FEATURE_INDEX_2 #define index_arch_Fast_Copy_Backward FEATURE_INDEX_2 @@ -914,6 +915,7 @@ extern const struct cpu_features *__get_ #define index_arch_Prefer_No_AVX512 FEATURE_INDEX_2 #define index_arch_MathVec_Prefer_No_AVX512 FEATURE_INDEX_2 #define index_arch_Prefer_FSRM FEATURE_INDEX_2 +#define index_arch_Prefer_AVX2_STRCMP FEATURE_INDEX_2 /* XCR0 Feature flags. */ #define bit_XMM_state (1u << 1) Index: glibc-2.31/sysdeps/x86/cpu-tunables.c =================================================================== --- glibc-2.31.orig/sysdeps/x86/cpu-tunables.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86/cpu-tunables.c 2021-03-10 09:01:00.920639086 +0100 @@ -282,6 +282,9 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_v CHECK_GLIBC_IFUNC_ARCH_BOTH (n, cpu_features, Fast_Copy_Backward, disable, 18); + CHECK_GLIBC_IFUNC_ARCH_NEED_ARCH_BOTH + (n, cpu_features, Prefer_AVX2_STRCMP, AVX2_Usable, + disable, 18); } break; case 19: Index: glibc-2.31/sysdeps/x86_64/multiarch/Makefile =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/Makefile 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/Makefile 2021-03-10 09:01:00.932639243 +0100 @@ -43,7 +43,45 @@ sysdep_routines += strncat-c stpncpy-c s memmove-avx512-unaligned-erms \ memset-sse2-unaligned-erms \ memset-avx2-unaligned-erms \ - memset-avx512-unaligned-erms + memset-avx512-unaligned-erms \ + memchr-avx2-rtm \ + memcmp-avx2-movbe-rtm \ + memmove-avx-unaligned-erms-rtm \ + memrchr-avx2-rtm \ + memset-avx2-unaligned-erms-rtm \ + rawmemchr-avx2-rtm \ + strchr-avx2-rtm \ + strcmp-avx2-rtm \ + strchrnul-avx2-rtm \ + stpcpy-avx2-rtm \ + stpncpy-avx2-rtm \ + strcat-avx2-rtm \ + strcpy-avx2-rtm \ + strlen-avx2-rtm \ + strncat-avx2-rtm \ + strncmp-avx2-rtm \ + strncpy-avx2-rtm \ + strnlen-avx2-rtm \ + strrchr-avx2-rtm \ + memchr-evex \ + memcmp-evex-movbe \ + memmove-evex-unaligned-erms \ + memrchr-evex \ + memset-evex-unaligned-erms \ + rawmemchr-evex \ + stpcpy-evex \ + stpncpy-evex \ + strcat-evex \ + strchr-evex \ + strchrnul-evex \ + strcmp-evex \ + strcpy-evex \ + strlen-evex \ + strncat-evex \ + strncmp-evex \ + strncpy-evex \ + strnlen-evex \ + strrchr-evex CFLAGS-varshift.c += -msse4 CFLAGS-strcspn-c.c += -msse4 CFLAGS-strpbrk-c.c += -msse4 @@ -60,7 +98,23 @@ sysdep_routines += wmemcmp-sse4 wmemcmp- wcschr-sse2 wcschr-avx2 \ wcsrchr-sse2 wcsrchr-avx2 \ wcsnlen-sse4_1 wcsnlen-c \ - wcslen-sse2 wcslen-avx2 wcsnlen-avx2 + wcslen-sse2 wcslen-avx2 wcsnlen-avx2 \ + wcschr-avx2-rtm \ + wcscmp-avx2-rtm \ + wcslen-avx2-rtm \ + wcsncmp-avx2-rtm \ + wcsnlen-avx2-rtm \ + wcsrchr-avx2-rtm \ + wmemchr-avx2-rtm \ + wmemcmp-avx2-movbe-rtm \ + wcschr-evex \ + wcscmp-evex \ + wcslen-evex \ + wcsncmp-evex \ + wcsnlen-evex \ + wcsrchr-evex \ + wmemchr-evex \ + wmemcmp-evex-movbe endif ifeq ($(subdir),debug) Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-avx2.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-avx2.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-avx2.h 2021-03-10 09:01:00.932639243 +0100 @@ -21,16 +21,28 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI2)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } return OPTIMIZE (sse2); } Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-impl-list.c =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-impl-list.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-impl-list.c 2021-03-10 09:01:00.948639453 +0100 @@ -43,6 +43,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, memchr, HAS_ARCH_FEATURE (AVX2_Usable), __memchr_avx2) + IFUNC_IMPL_ADD (array, i, memchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, memchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __memchr_evex) IFUNC_IMPL_ADD (array, i, memchr, 1, __memchr_sse2)) /* Support sysdeps/x86_64/multiarch/memcmp.c. */ @@ -51,6 +60,16 @@ __libc_ifunc_impl_list (const char *name (HAS_ARCH_FEATURE (AVX2_Usable) && HAS_CPU_FEATURE (MOVBE)), __memcmp_avx2_movbe) + IFUNC_IMPL_ADD (array, i, memcmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (MOVBE) + && HAS_CPU_FEATURE (RTM)), + __memcmp_avx2_movbe_rtm) + IFUNC_IMPL_ADD (array, i, memcmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (MOVBE)), + __memcmp_evex_movbe) IFUNC_IMPL_ADD (array, i, memcmp, HAS_CPU_FEATURE (SSE4_1), __memcmp_sse4_1) IFUNC_IMPL_ADD (array, i, memcmp, HAS_CPU_FEATURE (SSSE3), @@ -64,10 +83,10 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memmove_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memmove_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __memmove_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memmove_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_ARCH_FEATURE (AVX_Usable), @@ -76,6 +95,20 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX_Usable), __memmove_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memmove_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memmove_chk_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, __memmove_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memmove_chk_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, __memmove_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memmove_chk_evex_unaligned) + IFUNC_IMPL_ADD (array, i, __memmove_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memmove_chk_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_CPU_FEATURE (SSSE3), __memmove_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __memmove_chk, @@ -98,13 +131,27 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX_Usable), __memmove_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, memmove, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memmove_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, memmove, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memmove_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, memmove, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memmove_evex_unaligned) + IFUNC_IMPL_ADD (array, i, memmove, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memmove_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, memmove, HAS_ARCH_FEATURE (AVX512F_Usable), __memmove_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memmove, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memmove_avx512_unaligned) IFUNC_IMPL_ADD (array, i, memmove, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memmove_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSSE3), __memmove_ssse3_back) @@ -121,6 +168,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, memrchr, HAS_ARCH_FEATURE (AVX2_Usable), __memrchr_avx2) + IFUNC_IMPL_ADD (array, i, memrchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memrchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, memrchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __memrchr_evex) + IFUNC_IMPL_ADD (array, i, memrchr, 1, __memrchr_sse2)) #ifdef SHARED @@ -139,10 +195,28 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX2_Usable), __memset_chk_avx2_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memset_chk_avx2_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, __memset_chk, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memset_chk_avx2_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, __memset_chk, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __memset_chk_evex_unaligned) + IFUNC_IMPL_ADD (array, i, __memset_chk, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __memset_chk_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, __memset_chk, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), __memset_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), __memset_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, HAS_ARCH_FEATURE (AVX512F_Usable), @@ -164,10 +238,28 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX2_Usable), __memset_avx2_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, - HAS_ARCH_FEATURE (AVX512F_Usable), + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memset_avx2_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, memset, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __memset_avx2_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, memset, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __memset_evex_unaligned) + IFUNC_IMPL_ADD (array, i, memset, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __memset_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, memset, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), __memset_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, - HAS_ARCH_FEATURE (AVX512F_Usable), + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), __memset_avx512_unaligned) IFUNC_IMPL_ADD (array, i, memset, HAS_ARCH_FEATURE (AVX512F_Usable), @@ -179,6 +271,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, rawmemchr, HAS_ARCH_FEATURE (AVX2_Usable), __rawmemchr_avx2) + IFUNC_IMPL_ADD (array, i, rawmemchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __rawmemchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, rawmemchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __rawmemchr_evex) IFUNC_IMPL_ADD (array, i, rawmemchr, 1, __rawmemchr_sse2)) /* Support sysdeps/x86_64/multiarch/strlen.c. */ @@ -186,6 +287,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strlen, HAS_ARCH_FEATURE (AVX2_Usable), __strlen_avx2) + IFUNC_IMPL_ADD (array, i, strlen, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strlen_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strlen, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strlen_evex) IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_sse2)) /* Support sysdeps/x86_64/multiarch/strnlen.c. */ @@ -193,6 +302,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strnlen, HAS_ARCH_FEATURE (AVX2_Usable), __strnlen_avx2) + IFUNC_IMPL_ADD (array, i, strnlen, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strnlen_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strnlen, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strnlen_evex) IFUNC_IMPL_ADD (array, i, strnlen, 1, __strnlen_sse2)) /* Support sysdeps/x86_64/multiarch/stpncpy.c. */ @@ -201,6 +318,14 @@ __libc_ifunc_impl_list (const char *name __stpncpy_ssse3) IFUNC_IMPL_ADD (array, i, stpncpy, HAS_ARCH_FEATURE (AVX2_Usable), __stpncpy_avx2) + IFUNC_IMPL_ADD (array, i, stpncpy, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __stpncpy_avx2_rtm) + IFUNC_IMPL_ADD (array, i, stpncpy, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __stpncpy_evex) IFUNC_IMPL_ADD (array, i, stpncpy, 1, __stpncpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, stpncpy, 1, __stpncpy_sse2)) @@ -211,6 +336,14 @@ __libc_ifunc_impl_list (const char *name __stpcpy_ssse3) IFUNC_IMPL_ADD (array, i, stpcpy, HAS_ARCH_FEATURE (AVX2_Usable), __stpcpy_avx2) + IFUNC_IMPL_ADD (array, i, stpcpy, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __stpcpy_avx2_rtm) + IFUNC_IMPL_ADD (array, i, stpcpy, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __stpcpy_evex) IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, stpcpy, 1, __stpcpy_sse2)) @@ -245,6 +378,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL (i, name, strcat, IFUNC_IMPL_ADD (array, i, strcat, HAS_ARCH_FEATURE (AVX2_Usable), __strcat_avx2) + IFUNC_IMPL_ADD (array, i, strcat, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strcat_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strcat, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strcat_evex) IFUNC_IMPL_ADD (array, i, strcat, HAS_CPU_FEATURE (SSSE3), __strcat_ssse3) IFUNC_IMPL_ADD (array, i, strcat, 1, __strcat_sse2_unaligned) @@ -255,6 +396,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strchr, HAS_ARCH_FEATURE (AVX2_Usable), __strchr_avx2) + IFUNC_IMPL_ADD (array, i, strchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __strchr_evex) IFUNC_IMPL_ADD (array, i, strchr, 1, __strchr_sse2_no_bsf) IFUNC_IMPL_ADD (array, i, strchr, 1, __strchr_sse2)) @@ -263,6 +413,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strchrnul, HAS_ARCH_FEATURE (AVX2_Usable), __strchrnul_avx2) + IFUNC_IMPL_ADD (array, i, strchrnul, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strchrnul_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strchrnul, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __strchrnul_evex) IFUNC_IMPL_ADD (array, i, strchrnul, 1, __strchrnul_sse2)) /* Support sysdeps/x86_64/multiarch/strrchr.c. */ @@ -270,6 +429,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strrchr, HAS_ARCH_FEATURE (AVX2_Usable), __strrchr_avx2) + IFUNC_IMPL_ADD (array, i, strrchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strrchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strrchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strrchr_evex) IFUNC_IMPL_ADD (array, i, strrchr, 1, __strrchr_sse2)) /* Support sysdeps/x86_64/multiarch/strcmp.c. */ @@ -277,6 +444,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strcmp, HAS_ARCH_FEATURE (AVX2_Usable), __strcmp_avx2) + IFUNC_IMPL_ADD (array, i, strcmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strcmp_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strcmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __strcmp_evex) IFUNC_IMPL_ADD (array, i, strcmp, HAS_CPU_FEATURE (SSE4_2), __strcmp_sse42) IFUNC_IMPL_ADD (array, i, strcmp, HAS_CPU_FEATURE (SSSE3), @@ -288,6 +464,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL (i, name, strcpy, IFUNC_IMPL_ADD (array, i, strcpy, HAS_ARCH_FEATURE (AVX2_Usable), __strcpy_avx2) + IFUNC_IMPL_ADD (array, i, strcpy, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strcpy_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strcpy, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strcpy_evex) IFUNC_IMPL_ADD (array, i, strcpy, HAS_CPU_FEATURE (SSSE3), __strcpy_ssse3) IFUNC_IMPL_ADD (array, i, strcpy, 1, __strcpy_sse2_unaligned) @@ -331,6 +515,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL (i, name, strncat, IFUNC_IMPL_ADD (array, i, strncat, HAS_ARCH_FEATURE (AVX2_Usable), __strncat_avx2) + IFUNC_IMPL_ADD (array, i, strncat, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strncat_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strncat, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strncat_evex) IFUNC_IMPL_ADD (array, i, strncat, HAS_CPU_FEATURE (SSSE3), __strncat_ssse3) IFUNC_IMPL_ADD (array, i, strncat, 1, @@ -341,6 +533,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL (i, name, strncpy, IFUNC_IMPL_ADD (array, i, strncpy, HAS_ARCH_FEATURE (AVX2_Usable), __strncpy_avx2) + IFUNC_IMPL_ADD (array, i, strncpy, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strncpy_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strncpy, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strncpy_evex) IFUNC_IMPL_ADD (array, i, strncpy, HAS_CPU_FEATURE (SSSE3), __strncpy_ssse3) IFUNC_IMPL_ADD (array, i, strncpy, 1, @@ -370,6 +570,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wcschr, HAS_ARCH_FEATURE (AVX2_Usable), __wcschr_avx2) + IFUNC_IMPL_ADD (array, i, wcschr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcschr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcschr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcschr_evex) IFUNC_IMPL_ADD (array, i, wcschr, 1, __wcschr_sse2)) /* Support sysdeps/x86_64/multiarch/wcsrchr.c. */ @@ -377,6 +586,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wcsrchr, HAS_ARCH_FEATURE (AVX2_Usable), __wcsrchr_avx2) + IFUNC_IMPL_ADD (array, i, wcsrchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcsrchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcsrchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcsrchr_evex) IFUNC_IMPL_ADD (array, i, wcsrchr, 1, __wcsrchr_sse2)) /* Support sysdeps/x86_64/multiarch/wcscmp.c. */ @@ -384,6 +602,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wcscmp, HAS_ARCH_FEATURE (AVX2_Usable), __wcscmp_avx2) + IFUNC_IMPL_ADD (array, i, wcscmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcscmp_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcscmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcscmp_evex) IFUNC_IMPL_ADD (array, i, wcscmp, 1, __wcscmp_sse2)) /* Support sysdeps/x86_64/multiarch/wcsncmp.c. */ @@ -391,6 +618,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wcsncmp, HAS_ARCH_FEATURE (AVX2_Usable), __wcsncmp_avx2) + IFUNC_IMPL_ADD (array, i, wcsncmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcsncmp_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcsncmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcsncmp_evex) IFUNC_IMPL_ADD (array, i, wcsncmp, 1, __wcsncmp_sse2)) /* Support sysdeps/x86_64/multiarch/wcscpy.c. */ @@ -404,6 +640,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wcslen, HAS_ARCH_FEATURE (AVX2_Usable), __wcslen_avx2) + IFUNC_IMPL_ADD (array, i, wcslen, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcslen_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcslen, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcslen_evex) IFUNC_IMPL_ADD (array, i, wcslen, 1, __wcslen_sse2)) /* Support sysdeps/x86_64/multiarch/wcsnlen.c. */ @@ -412,6 +657,15 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX2_Usable), __wcsnlen_avx2) IFUNC_IMPL_ADD (array, i, wcsnlen, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wcsnlen_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wcsnlen, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wcsnlen_evex) + IFUNC_IMPL_ADD (array, i, wcsnlen, HAS_CPU_FEATURE (SSE4_1), __wcsnlen_sse4_1) IFUNC_IMPL_ADD (array, i, wcsnlen, 1, __wcsnlen_sse2)) @@ -421,6 +675,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, wmemchr, HAS_ARCH_FEATURE (AVX2_Usable), __wmemchr_avx2) + IFUNC_IMPL_ADD (array, i, wmemchr, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wmemchr_avx2_rtm) + IFUNC_IMPL_ADD (array, i, wmemchr, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (BMI2)), + __wmemchr_evex) IFUNC_IMPL_ADD (array, i, wmemchr, 1, __wmemchr_sse2)) /* Support sysdeps/x86_64/multiarch/wmemcmp.c. */ @@ -429,6 +692,16 @@ __libc_ifunc_impl_list (const char *name (HAS_ARCH_FEATURE (AVX2_Usable) && HAS_CPU_FEATURE (MOVBE)), __wmemcmp_avx2_movbe) + IFUNC_IMPL_ADD (array, i, wmemcmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (MOVBE) + && HAS_CPU_FEATURE (RTM)), + __wmemcmp_avx2_movbe_rtm) + IFUNC_IMPL_ADD (array, i, wmemcmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable) + && HAS_CPU_FEATURE (MOVBE)), + __wmemcmp_evex_movbe) IFUNC_IMPL_ADD (array, i, wmemcmp, HAS_CPU_FEATURE (SSE4_1), __wmemcmp_sse4_1) IFUNC_IMPL_ADD (array, i, wmemcmp, HAS_CPU_FEATURE (SSSE3), @@ -443,7 +716,14 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX2_Usable), __wmemset_avx2_unaligned) IFUNC_IMPL_ADD (array, i, wmemset, - HAS_ARCH_FEATURE (AVX512F_Usable), + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __wmemset_avx2_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, wmemset, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __wmemset_evex_unaligned) + IFUNC_IMPL_ADD (array, i, wmemset, + HAS_ARCH_FEATURE (AVX512VL_Usable), __wmemset_avx512_unaligned)) #ifdef SHARED @@ -453,10 +733,10 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memcpy_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memcpy_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __memcpy_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memcpy_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), @@ -465,6 +745,20 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX_Usable), __memcpy_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memcpy_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memcpy_chk_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, __memcpy_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memcpy_chk_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, __memcpy_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memcpy_chk_evex_unaligned) + IFUNC_IMPL_ADD (array, i, __memcpy_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memcpy_chk_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_CPU_FEATURE (SSSE3), __memcpy_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __memcpy_chk, @@ -486,6 +780,20 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, memcpy, HAS_ARCH_FEATURE (AVX_Usable), __memcpy_avx_unaligned_erms) + IFUNC_IMPL_ADD (array, i, memcpy, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memcpy_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, memcpy, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __memcpy_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, memcpy, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memcpy_evex_unaligned) + IFUNC_IMPL_ADD (array, i, memcpy, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __memcpy_evex_unaligned_erms) IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSSE3), __memcpy_ssse3_back) IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSSE3), @@ -494,10 +802,10 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX512F_Usable), __memcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memcpy, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memcpy_avx512_unaligned) IFUNC_IMPL_ADD (array, i, memcpy, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __memcpy_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, memcpy, 1, @@ -511,10 +819,10 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __mempcpy_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __mempcpy_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_ARCH_FEATURE (AVX_Usable), @@ -523,6 +831,20 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_chk_avx_unaligned_erms) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __mempcpy_chk_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, __mempcpy_chk, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __mempcpy_chk_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, __mempcpy_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __mempcpy_chk_evex_unaligned) + IFUNC_IMPL_ADD (array, i, __mempcpy_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __mempcpy_chk_evex_unaligned_erms) + IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_CPU_FEATURE (SSSE3), __mempcpy_chk_ssse3_back) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, @@ -542,10 +864,10 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX512F_Usable), __mempcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, mempcpy, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __mempcpy_avx512_unaligned) IFUNC_IMPL_ADD (array, i, mempcpy, - HAS_ARCH_FEATURE (AVX512F_Usable), + HAS_ARCH_FEATURE (AVX512VL_Usable), __mempcpy_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX_Usable), @@ -553,6 +875,20 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, mempcpy, HAS_ARCH_FEATURE (AVX_Usable), __mempcpy_avx_unaligned_erms) + IFUNC_IMPL_ADD (array, i, mempcpy, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __mempcpy_avx_unaligned_rtm) + IFUNC_IMPL_ADD (array, i, mempcpy, + (HAS_ARCH_FEATURE (AVX_Usable) + && HAS_CPU_FEATURE (RTM)), + __mempcpy_avx_unaligned_erms_rtm) + IFUNC_IMPL_ADD (array, i, mempcpy, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __mempcpy_evex_unaligned) + IFUNC_IMPL_ADD (array, i, mempcpy, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __mempcpy_evex_unaligned_erms) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSSE3), __mempcpy_ssse3_back) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_CPU_FEATURE (SSSE3), @@ -568,6 +904,14 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, strncmp, HAS_ARCH_FEATURE (AVX2_Usable), __strncmp_avx2) + IFUNC_IMPL_ADD (array, i, strncmp, + (HAS_ARCH_FEATURE (AVX2_Usable) + && HAS_CPU_FEATURE (RTM)), + __strncmp_avx2_rtm) + IFUNC_IMPL_ADD (array, i, strncmp, + (HAS_ARCH_FEATURE (AVX512VL_Usable) + && HAS_ARCH_FEATURE (AVX512BW_Usable)), + __strncmp_evex) IFUNC_IMPL_ADD (array, i, strncmp, HAS_CPU_FEATURE (SSE4_2), __strncmp_sse42) IFUNC_IMPL_ADD (array, i, strncmp, HAS_CPU_FEATURE (SSSE3), @@ -583,6 +927,9 @@ __libc_ifunc_impl_list (const char *name HAS_ARCH_FEATURE (AVX2_Usable), __wmemset_chk_avx2_unaligned) IFUNC_IMPL_ADD (array, i, __wmemset_chk, + HAS_ARCH_FEATURE (AVX512VL_Usable), + __wmemset_chk_evex_unaligned) + IFUNC_IMPL_ADD (array, i, __wmemset_chk, HAS_ARCH_FEATURE (AVX512F_Usable), __wmemset_chk_avx512_unaligned)) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memchr-evex.S 2021-03-10 09:01:00.920639086 +0100 @@ -0,0 +1,381 @@ +/* memchr/wmemchr optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef MEMCHR +# define MEMCHR __memchr_evex +# endif + +# ifdef USE_AS_WMEMCHR +# define VPBROADCAST vpbroadcastd +# define VPCMP vpcmpd +# define SHIFT_REG r8d +# else +# define VPBROADCAST vpbroadcastb +# define VPCMP vpcmpb +# define SHIFT_REG ecx +# endif + +# define XMMMATCH xmm16 +# define YMMMATCH ymm16 +# define YMM1 ymm17 +# define YMM2 ymm18 +# define YMM3 ymm19 +# define YMM4 ymm20 +# define YMM5 ymm21 +# define YMM6 ymm22 + +# define VEC_SIZE 32 + + .section .text.evex,"ax",@progbits +ENTRY (MEMCHR) +# ifndef USE_AS_RAWMEMCHR + /* Check for zero length. */ + test %RDX_LP, %RDX_LP + jz L(zero) +# endif + movl %edi, %ecx +# ifdef USE_AS_WMEMCHR + shl $2, %RDX_LP +# else +# ifdef __ILP32__ + /* Clear the upper 32 bits. */ + movl %edx, %edx +# endif +# endif + /* Broadcast CHAR to YMMMATCH. */ + VPBROADCAST %esi, %YMMMATCH + /* Check if we may cross page boundary with one vector load. */ + andl $(2 * VEC_SIZE - 1), %ecx + cmpl $VEC_SIZE, %ecx + ja L(cros_page_boundary) + + /* Check the first VEC_SIZE bytes. */ + VPCMP $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + +# ifndef USE_AS_RAWMEMCHR + jnz L(first_vec_x0_check) + /* Adjust length and check the end of data. */ + subq $VEC_SIZE, %rdx + jbe L(zero) +# else + jnz L(first_vec_x0) +# endif + + /* Align data for aligned loads in the loop. */ + addq $VEC_SIZE, %rdi + andl $(VEC_SIZE - 1), %ecx + andq $-VEC_SIZE, %rdi + +# ifndef USE_AS_RAWMEMCHR + /* Adjust length. */ + addq %rcx, %rdx + + subq $(VEC_SIZE * 4), %rdx + jbe L(last_4x_vec_or_less) +# endif + jmp L(more_4x_vec) + + .p2align 4 +L(cros_page_boundary): + andl $(VEC_SIZE - 1), %ecx +# ifdef USE_AS_WMEMCHR + /* NB: Divide shift count by 4 since each bit in K1 represent 4 + bytes. */ + movl %ecx, %SHIFT_REG + sarl $2, %SHIFT_REG +# endif + andq $-VEC_SIZE, %rdi + VPCMP $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + /* Remove the leading bytes. */ + sarxl %SHIFT_REG, %eax, %eax + testl %eax, %eax + jz L(aligned_more) + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif +# ifndef USE_AS_RAWMEMCHR + /* Check the end of data. */ + cmpq %rax, %rdx + jbe L(zero) +# endif + addq %rdi, %rax + addq %rcx, %rax + ret + + .p2align 4 +L(aligned_more): +# ifndef USE_AS_RAWMEMCHR + /* Calculate "rdx + rcx - VEC_SIZE" with "rdx - (VEC_SIZE - rcx)" + instead of "(rdx + rcx) - VEC_SIZE" to void possible addition + overflow. */ + negq %rcx + addq $VEC_SIZE, %rcx + + /* Check the end of data. */ + subq %rcx, %rdx + jbe L(zero) +# endif + + addq $VEC_SIZE, %rdi + +# ifndef USE_AS_RAWMEMCHR + subq $(VEC_SIZE * 4), %rdx + jbe L(last_4x_vec_or_less) +# endif + +L(more_4x_vec): + /* Check the first 4 * VEC_SIZE. Only one VEC_SIZE at a time + since data is only aligned to VEC_SIZE. */ + VPCMP $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + VPCMP $0, VEC_SIZE(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + VPCMP $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x2) + + VPCMP $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x3) + + addq $(VEC_SIZE * 4), %rdi + +# ifndef USE_AS_RAWMEMCHR + subq $(VEC_SIZE * 4), %rdx + jbe L(last_4x_vec_or_less) +# endif + + /* Align data to 4 * VEC_SIZE. */ + movq %rdi, %rcx + andl $(4 * VEC_SIZE - 1), %ecx + andq $-(4 * VEC_SIZE), %rdi + +# ifndef USE_AS_RAWMEMCHR + /* Adjust length. */ + addq %rcx, %rdx +# endif + + .p2align 4 +L(loop_4x_vec): + /* Compare 4 * VEC at a time forward. */ + VPCMP $0, (%rdi), %YMMMATCH, %k1 + VPCMP $0, VEC_SIZE(%rdi), %YMMMATCH, %k2 + kord %k1, %k2, %k5 + VPCMP $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k3 + VPCMP $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k4 + + kord %k3, %k4, %k6 + kortestd %k5, %k6 + jnz L(4x_vec_end) + + addq $(VEC_SIZE * 4), %rdi + +# ifdef USE_AS_RAWMEMCHR + jmp L(loop_4x_vec) +# else + subq $(VEC_SIZE * 4), %rdx + ja L(loop_4x_vec) + +L(last_4x_vec_or_less): + /* Less than 4 * VEC and aligned to VEC_SIZE. */ + addl $(VEC_SIZE * 2), %edx + jle L(last_2x_vec) + + VPCMP $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + VPCMP $0, VEC_SIZE(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + VPCMP $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + + jnz L(first_vec_x2_check) + subl $VEC_SIZE, %edx + jle L(zero) + + VPCMP $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + + jnz L(first_vec_x3_check) + xorl %eax, %eax + ret + + .p2align 4 +L(last_2x_vec): + addl $(VEC_SIZE * 2), %edx + VPCMP $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + + jnz L(first_vec_x0_check) + subl $VEC_SIZE, %edx + jle L(zero) + + VPCMP $0, VEC_SIZE(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x1_check) + xorl %eax, %eax + ret + + .p2align 4 +L(first_vec_x0_check): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rdx + jbe L(zero) + addq %rdi, %rax + ret + + .p2align 4 +L(first_vec_x1_check): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rdx + jbe L(zero) + addq $VEC_SIZE, %rax + addq %rdi, %rax + ret + + .p2align 4 +L(first_vec_x2_check): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rdx + jbe L(zero) + addq $(VEC_SIZE * 2), %rax + addq %rdi, %rax + ret + + .p2align 4 +L(first_vec_x3_check): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rdx + jbe L(zero) + addq $(VEC_SIZE * 3), %rax + addq %rdi, %rax + ret + + .p2align 4 +L(zero): + xorl %eax, %eax + ret +# endif + + .p2align 4 +L(first_vec_x0): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (%rdi, %rax, 4), %rax +# else + addq %rdi, %rax +# endif + ret + + .p2align 4 +L(first_vec_x1): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq VEC_SIZE(%rdi, %rax, 4), %rax +# else + addq $VEC_SIZE, %rax + addq %rdi, %rax +# endif + ret + + .p2align 4 +L(first_vec_x2): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (VEC_SIZE * 2)(%rdi, %rax, 4), %rax +# else + addq $(VEC_SIZE * 2), %rax + addq %rdi, %rax +# endif + ret + + .p2align 4 +L(4x_vec_end): + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x0) + kmovd %k2, %eax + testl %eax, %eax + jnz L(first_vec_x1) + kmovd %k3, %eax + testl %eax, %eax + jnz L(first_vec_x2) + kmovd %k4, %eax + testl %eax, %eax +L(first_vec_x3): + tzcntl %eax, %eax +# ifdef USE_AS_WMEMCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (VEC_SIZE * 3)(%rdi, %rax, 4), %rax +# else + addq $(VEC_SIZE * 3), %rax + addq %rdi, %rax +# endif + ret + +END (MEMCHR) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memrchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memrchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,337 @@ +/* memrchr optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# define VMOVA vmovdqa64 + +# define YMMMATCH ymm16 + +# define VEC_SIZE 32 + + .section .text.evex,"ax",@progbits +ENTRY (__memrchr_evex) + /* Broadcast CHAR to YMMMATCH. */ + vpbroadcastb %esi, %YMMMATCH + + sub $VEC_SIZE, %RDX_LP + jbe L(last_vec_or_less) + + add %RDX_LP, %RDI_LP + + /* Check the last VEC_SIZE bytes. */ + vpcmpb $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(last_vec_x0) + + subq $(VEC_SIZE * 4), %rdi + movl %edi, %ecx + andl $(VEC_SIZE - 1), %ecx + jz L(aligned_more) + + /* Align data for aligned loads in the loop. */ + addq $VEC_SIZE, %rdi + addq $VEC_SIZE, %rdx + andq $-VEC_SIZE, %rdi + subq %rcx, %rdx + + .p2align 4 +L(aligned_more): + subq $(VEC_SIZE * 4), %rdx + jbe L(last_4x_vec_or_less) + + /* Check the last 4 * VEC_SIZE. Only one VEC_SIZE at a time + since data is only aligned to VEC_SIZE. */ + vpcmpb $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(last_vec_x3) + + vpcmpb $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k2 + kmovd %k2, %eax + testl %eax, %eax + jnz L(last_vec_x2) + + vpcmpb $0, VEC_SIZE(%rdi), %YMMMATCH, %k3 + kmovd %k3, %eax + testl %eax, %eax + jnz L(last_vec_x1) + + vpcmpb $0, (%rdi), %YMMMATCH, %k4 + kmovd %k4, %eax + testl %eax, %eax + jnz L(last_vec_x0) + + /* Align data to 4 * VEC_SIZE for loop with fewer branches. + There are some overlaps with above if data isn't aligned + to 4 * VEC_SIZE. */ + movl %edi, %ecx + andl $(VEC_SIZE * 4 - 1), %ecx + jz L(loop_4x_vec) + + addq $(VEC_SIZE * 4), %rdi + addq $(VEC_SIZE * 4), %rdx + andq $-(VEC_SIZE * 4), %rdi + subq %rcx, %rdx + + .p2align 4 +L(loop_4x_vec): + /* Compare 4 * VEC at a time forward. */ + subq $(VEC_SIZE * 4), %rdi + subq $(VEC_SIZE * 4), %rdx + jbe L(last_4x_vec_or_less) + + vpcmpb $0, (%rdi), %YMMMATCH, %k1 + vpcmpb $0, VEC_SIZE(%rdi), %YMMMATCH, %k2 + kord %k1, %k2, %k5 + vpcmpb $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k3 + vpcmpb $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k4 + + kord %k3, %k4, %k6 + kortestd %k5, %k6 + jz L(loop_4x_vec) + + /* There is a match. */ + kmovd %k4, %eax + testl %eax, %eax + jnz L(last_vec_x3) + + kmovd %k3, %eax + testl %eax, %eax + jnz L(last_vec_x2) + + kmovd %k2, %eax + testl %eax, %eax + jnz L(last_vec_x1) + + kmovd %k1, %eax + bsrl %eax, %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_4x_vec_or_less): + addl $(VEC_SIZE * 4), %edx + cmpl $(VEC_SIZE * 2), %edx + jbe L(last_2x_vec) + + vpcmpb $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(last_vec_x3) + + vpcmpb $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k2 + kmovd %k2, %eax + testl %eax, %eax + jnz L(last_vec_x2) + + vpcmpb $0, VEC_SIZE(%rdi), %YMMMATCH, %k3 + kmovd %k3, %eax + testl %eax, %eax + jnz L(last_vec_x1_check) + cmpl $(VEC_SIZE * 3), %edx + jbe L(zero) + + vpcmpb $0, (%rdi), %YMMMATCH, %k4 + kmovd %k4, %eax + testl %eax, %eax + jz L(zero) + bsrl %eax, %eax + subq $(VEC_SIZE * 4), %rdx + addq %rax, %rdx + jl L(zero) + addq %rdi, %rax + ret + + .p2align 4 +L(last_2x_vec): + vpcmpb $0, (VEC_SIZE * 3)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(last_vec_x3_check) + cmpl $VEC_SIZE, %edx + jbe L(zero) + + vpcmpb $0, (VEC_SIZE * 2)(%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + testl %eax, %eax + jz L(zero) + bsrl %eax, %eax + subq $(VEC_SIZE * 2), %rdx + addq %rax, %rdx + jl L(zero) + addl $(VEC_SIZE * 2), %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x0): + bsrl %eax, %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x1): + bsrl %eax, %eax + addl $VEC_SIZE, %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x2): + bsrl %eax, %eax + addl $(VEC_SIZE * 2), %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x3): + bsrl %eax, %eax + addl $(VEC_SIZE * 3), %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x1_check): + bsrl %eax, %eax + subq $(VEC_SIZE * 3), %rdx + addq %rax, %rdx + jl L(zero) + addl $VEC_SIZE, %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_x3_check): + bsrl %eax, %eax + subq $VEC_SIZE, %rdx + addq %rax, %rdx + jl L(zero) + addl $(VEC_SIZE * 3), %eax + addq %rdi, %rax + ret + + .p2align 4 +L(zero): + xorl %eax, %eax + ret + + .p2align 4 +L(last_vec_or_less_aligned): + movl %edx, %ecx + + vpcmpb $0, (%rdi), %YMMMATCH, %k1 + + movl $1, %edx + /* Support rdx << 32. */ + salq %cl, %rdx + subq $1, %rdx + + kmovd %k1, %eax + + /* Remove the trailing bytes. */ + andl %edx, %eax + testl %eax, %eax + jz L(zero) + + bsrl %eax, %eax + addq %rdi, %rax + ret + + .p2align 4 +L(last_vec_or_less): + addl $VEC_SIZE, %edx + + /* Check for zero length. */ + testl %edx, %edx + jz L(zero) + + movl %edi, %ecx + andl $(VEC_SIZE - 1), %ecx + jz L(last_vec_or_less_aligned) + + movl %ecx, %esi + movl %ecx, %r8d + addl %edx, %esi + andq $-VEC_SIZE, %rdi + + subl $VEC_SIZE, %esi + ja L(last_vec_2x_aligned) + + /* Check the last VEC. */ + vpcmpb $0, (%rdi), %YMMMATCH, %k1 + kmovd %k1, %eax + + /* Remove the leading and trailing bytes. */ + sarl %cl, %eax + movl %edx, %ecx + + movl $1, %edx + sall %cl, %edx + subl $1, %edx + + andl %edx, %eax + testl %eax, %eax + jz L(zero) + + bsrl %eax, %eax + addq %rdi, %rax + addq %r8, %rax + ret + + .p2align 4 +L(last_vec_2x_aligned): + movl %esi, %ecx + + /* Check the last VEC. */ + vpcmpb $0, VEC_SIZE(%rdi), %YMMMATCH, %k1 + + movl $1, %edx + sall %cl, %edx + subl $1, %edx + + kmovd %k1, %eax + + /* Remove the trailing bytes. */ + andl %edx, %eax + + testl %eax, %eax + jnz L(last_vec_x1) + + /* Check the second last VEC. */ + vpcmpb $0, (%rdi), %YMMMATCH, %k1 + + movl %r8d, %ecx + + kmovd %k1, %eax + + /* Remove the leading bytes. Must use unsigned right shift for + bsrl below. */ + shrl %cl, %eax + testl %eax, %eax + jz L(zero) + + bsrl %eax, %eax + addq %rdi, %rax + addq %r8, %rax + ret +END (__memrchr_evex) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/rawmemchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/rawmemchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,4 @@ +#define MEMCHR __rawmemchr_evex +#define USE_AS_RAWMEMCHR 1 + +#include "memchr-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,335 @@ +/* strchr/strchrnul optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef STRCHR +# define STRCHR __strchr_evex +# endif + +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 + +# ifdef USE_AS_WCSCHR +# define VPBROADCAST vpbroadcastd +# define VPCMP vpcmpd +# define VPMINU vpminud +# define CHAR_REG esi +# define SHIFT_REG r8d +# else +# define VPBROADCAST vpbroadcastb +# define VPCMP vpcmpb +# define VPMINU vpminub +# define CHAR_REG sil +# define SHIFT_REG ecx +# endif + +# define XMMZERO xmm16 + +# define YMMZERO ymm16 +# define YMM0 ymm17 +# define YMM1 ymm18 +# define YMM2 ymm19 +# define YMM3 ymm20 +# define YMM4 ymm21 +# define YMM5 ymm22 +# define YMM6 ymm23 +# define YMM7 ymm24 +# define YMM8 ymm25 + +# define VEC_SIZE 32 +# define PAGE_SIZE 4096 + + .section .text.evex,"ax",@progbits +ENTRY (STRCHR) + movl %edi, %ecx +# ifndef USE_AS_STRCHRNUL + xorl %edx, %edx +# endif + + /* Broadcast CHAR to YMM0. */ + VPBROADCAST %esi, %YMM0 + + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + + /* Check if we cross page boundary with one vector load. */ + andl $(PAGE_SIZE - 1), %ecx + cmpl $(PAGE_SIZE - VEC_SIZE), %ecx + ja L(cross_page_boundary) + + /* Check the first VEC_SIZE bytes. Search for both CHAR and the + null bytes. */ + VMOVU (%rdi), %YMM1 + + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + ktestd %k0, %k0 + jz L(more_vecs) + kmovd %k0, %eax + tzcntl %eax, %eax + /* Found CHAR or the null byte. */ +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (%rdi, %rax, 4), %rax +# else + addq %rdi, %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + + .p2align 4 +L(more_vecs): + /* Align data for aligned loads in the loop. */ + andq $-VEC_SIZE, %rdi +L(aligned_more): + + /* Check the next 4 * VEC_SIZE. Only one VEC_SIZE at a time + since data is only aligned to VEC_SIZE. */ + VMOVA VEC_SIZE(%rdi), %YMM1 + addq $VEC_SIZE, %rdi + + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + VMOVA VEC_SIZE(%rdi), %YMM1 + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + VMOVA (VEC_SIZE * 2)(%rdi), %YMM1 + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x2) + + VMOVA (VEC_SIZE * 3)(%rdi), %YMM1 + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + ktestd %k0, %k0 + jz L(prep_loop_4x) + + kmovd %k0, %eax + tzcntl %eax, %eax + /* Found CHAR or the null byte. */ +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (VEC_SIZE * 3)(%rdi, %rax, 4), %rax +# else + leaq (VEC_SIZE * 3)(%rdi, %rax), %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + + .p2align 4 +L(first_vec_x0): + tzcntl %eax, %eax + /* Found CHAR or the null byte. */ +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (%rdi, %rax, 4), %rax +# else + addq %rdi, %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + + .p2align 4 +L(first_vec_x1): + tzcntl %eax, %eax + /* Found CHAR or the null byte. */ +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq VEC_SIZE(%rdi, %rax, 4), %rax +# else + leaq VEC_SIZE(%rdi, %rax), %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + + .p2align 4 +L(first_vec_x2): + tzcntl %eax, %eax + /* Found CHAR or the null byte. */ +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (VEC_SIZE * 2)(%rdi, %rax, 4), %rax +# else + leaq (VEC_SIZE * 2)(%rdi, %rax), %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + +L(prep_loop_4x): + /* Align data to 4 * VEC_SIZE. */ + andq $-(VEC_SIZE * 4), %rdi + + .p2align 4 +L(loop_4x_vec): + /* Compare 4 * VEC at a time forward. */ + VMOVA (VEC_SIZE * 4)(%rdi), %YMM1 + VMOVA (VEC_SIZE * 5)(%rdi), %YMM2 + VMOVA (VEC_SIZE * 6)(%rdi), %YMM3 + VMOVA (VEC_SIZE * 7)(%rdi), %YMM4 + + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM5 + vpxorq %YMM2, %YMM0, %YMM6 + vpxorq %YMM3, %YMM0, %YMM7 + vpxorq %YMM4, %YMM0, %YMM8 + + VPMINU %YMM5, %YMM1, %YMM5 + VPMINU %YMM6, %YMM2, %YMM6 + VPMINU %YMM7, %YMM3, %YMM7 + VPMINU %YMM8, %YMM4, %YMM8 + + VPMINU %YMM5, %YMM6, %YMM1 + VPMINU %YMM7, %YMM8, %YMM2 + + VPMINU %YMM1, %YMM2, %YMM1 + + /* Each bit in K0 represents a CHAR or a null byte. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + + addq $(VEC_SIZE * 4), %rdi + + ktestd %k0, %k0 + jz L(loop_4x_vec) + + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM5, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + /* Each bit in K1 represents a CHAR or a null byte in YMM2. */ + VPCMP $0, %YMMZERO, %YMM6, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + /* Each bit in K2 represents a CHAR or a null byte in YMM3. */ + VPCMP $0, %YMMZERO, %YMM7, %k2 + /* Each bit in K3 represents a CHAR or a null byte in YMM4. */ + VPCMP $0, %YMMZERO, %YMM8, %k3 + +# ifdef USE_AS_WCSCHR + /* NB: Each bit in K2/K3 represents 4-byte element. */ + kshiftlw $8, %k3, %k1 +# else + kshiftlq $32, %k3, %k1 +# endif + + /* Each bit in K1 represents a NULL or a mismatch. */ + korq %k1, %k2, %k1 + kmovq %k1, %rax + + tzcntq %rax, %rax +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (VEC_SIZE * 2)(%rdi, %rax, 4), %rax +# else + leaq (VEC_SIZE * 2)(%rdi, %rax), %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + + /* Cold case for crossing page with first load. */ + .p2align 4 +L(cross_page_boundary): + andq $-VEC_SIZE, %rdi + andl $(VEC_SIZE - 1), %ecx + + VMOVA (%rdi), %YMM1 + + /* Leaves only CHARS matching esi as 0. */ + vpxorq %YMM1, %YMM0, %YMM2 + VPMINU %YMM2, %YMM1, %YMM2 + /* Each bit in K0 represents a CHAR or a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM2, %k0 + kmovd %k0, %eax + testl %eax, %eax + +# ifdef USE_AS_WCSCHR + /* NB: Divide shift count by 4 since each bit in K1 represent 4 + bytes. */ + movl %ecx, %SHIFT_REG + sarl $2, %SHIFT_REG +# endif + + /* Remove the leading bits. */ + sarxl %SHIFT_REG, %eax, %eax + testl %eax, %eax + + jz L(aligned_more) + tzcntl %eax, %eax + addq %rcx, %rdi +# ifdef USE_AS_WCSCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq (%rdi, %rax, 4), %rax +# else + addq %rdi, %rax +# endif +# ifndef USE_AS_STRCHRNUL + cmp (%rax), %CHAR_REG + cmovne %rdx, %rax +# endif + ret + +END (STRCHR) +# endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strchr.c =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strchr.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchr.c 2021-03-10 09:01:00.936639295 +0100 @@ -29,16 +29,28 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_no_bsf) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI2)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } if (CPU_FEATURES_ARCH_P (cpu_features, Slow_BSF)) return OPTIMIZE (sse2_no_bsf); Index: glibc-2.31/sysdeps/x86_64/multiarch/strchrnul-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchrnul-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,3 @@ +#define STRCHR __strchrnul_evex +#define USE_AS_STRCHRNUL 1 +#include "strchr-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcmp-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcmp-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,1043 @@ +/* strcmp/wcscmp/strncmp/wcsncmp optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef STRCMP +# define STRCMP __strcmp_evex +# endif + +# define PAGE_SIZE 4096 + +/* VEC_SIZE = Number of bytes in a ymm register */ +# define VEC_SIZE 32 + +/* Shift for dividing by (VEC_SIZE * 4). */ +# define DIVIDE_BY_VEC_4_SHIFT 7 +# if (VEC_SIZE * 4) != (1 << DIVIDE_BY_VEC_4_SHIFT) +# error (VEC_SIZE * 4) != (1 << DIVIDE_BY_VEC_4_SHIFT) +# endif + +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 + +# ifdef USE_AS_WCSCMP +/* Compare packed dwords. */ +# define VPCMP vpcmpd +# define SHIFT_REG32 r8d +# define SHIFT_REG64 r8 +/* 1 dword char == 4 bytes. */ +# define SIZE_OF_CHAR 4 +# else +/* Compare packed bytes. */ +# define VPCMP vpcmpb +# define SHIFT_REG32 ecx +# define SHIFT_REG64 rcx +/* 1 byte char == 1 byte. */ +# define SIZE_OF_CHAR 1 +# endif + +# define XMMZERO xmm16 +# define XMM0 xmm17 +# define XMM1 xmm18 + +# define YMMZERO ymm16 +# define YMM0 ymm17 +# define YMM1 ymm18 +# define YMM2 ymm19 +# define YMM3 ymm20 +# define YMM4 ymm21 +# define YMM5 ymm22 +# define YMM6 ymm23 +# define YMM7 ymm24 + +/* Warning! + wcscmp/wcsncmp have to use SIGNED comparison for elements. + strcmp/strncmp have to use UNSIGNED comparison for elements. +*/ + +/* The main idea of the string comparison (byte or dword) using 256-bit + EVEX instructions consists of comparing (VPCMP) two ymm vectors. The + latter can be on either packed bytes or dwords depending on + USE_AS_WCSCMP. In order to check the null char, algorithm keeps the + matched bytes/dwords, requiring 5 EVEX instructions (3 VPCMP and 2 + KORD). In general, the costs of comparing VEC_SIZE bytes (32-bytes) + are 3 VPCMP and 2 KORD instructions, together with VMOVU and ktestd + instructions. Main loop (away from from page boundary) compares 4 + vectors are a time, effectively comparing 4 x VEC_SIZE bytes (128 + bytes) on each loop. + + The routine strncmp/wcsncmp (enabled by defining USE_AS_STRNCMP) logic + is the same as strcmp, except that an a maximum offset is tracked. If + the maximum offset is reached before a difference is found, zero is + returned. */ + + .section .text.evex,"ax",@progbits +ENTRY (STRCMP) +# ifdef USE_AS_STRNCMP + /* Check for simple cases (0 or 1) in offset. */ + cmp $1, %RDX_LP + je L(char0) + jb L(zero) +# ifdef USE_AS_WCSCMP + /* Convert units: from wide to byte char. */ + shl $2, %RDX_LP +# endif + /* Register %r11 tracks the maximum offset. */ + mov %RDX_LP, %R11_LP +# endif + movl %edi, %eax + xorl %edx, %edx + /* Make %XMMZERO (%YMMZERO) all zeros in this function. */ + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + orl %esi, %eax + andl $(PAGE_SIZE - 1), %eax + cmpl $(PAGE_SIZE - (VEC_SIZE * 4)), %eax + jg L(cross_page) + /* Start comparing 4 vectors. */ + VMOVU (%rdi), %YMM0 + VMOVU (%rsi), %YMM1 + + /* Each bit in K0 represents a mismatch in YMM0 and YMM1. */ + VPCMP $4, %YMM0, %YMM1, %k0 + + /* Check for NULL in YMM0. */ + VPCMP $0, %YMMZERO, %YMM0, %k1 + /* Check for NULL in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k2 + /* Each bit in K1 represents a NULL in YMM0 or YMM1. */ + kord %k1, %k2, %k1 + + /* Each bit in K1 represents: + 1. A mismatch in YMM0 and YMM1. Or + 2. A NULL in YMM0 or YMM1. + */ + kord %k0, %k1, %k1 + + ktestd %k1, %k1 + je L(next_3_vectors) + kmovd %k1, %ecx + tzcntl %ecx, %edx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edx +# endif +# ifdef USE_AS_STRNCMP + /* Return 0 if the mismatched index (%rdx) is after the maximum + offset (%r11). */ + cmpq %r11, %rdx + jae L(zero) +# endif +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi, %rdx), %ecx + cmpl (%rsi, %rdx), %ecx + je L(return) +L(wcscmp_return): + setl %al + negl %eax + orl $1, %eax +L(return): +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %edx + subl %edx, %eax +# endif + ret + + .p2align 4 +L(return_vec_size): + kmovd %k1, %ecx + tzcntl %ecx, %edx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edx +# endif +# ifdef USE_AS_STRNCMP + /* Return 0 if the mismatched index (%rdx + VEC_SIZE) is after + the maximum offset (%r11). */ + addq $VEC_SIZE, %rdx + cmpq %r11, %rdx + jae L(zero) +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi, %rdx), %ecx + cmpl (%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl VEC_SIZE(%rdi, %rdx), %ecx + cmpl VEC_SIZE(%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl VEC_SIZE(%rdi, %rdx), %eax + movzbl VEC_SIZE(%rsi, %rdx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(return_2_vec_size): + kmovd %k1, %ecx + tzcntl %ecx, %edx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edx +# endif +# ifdef USE_AS_STRNCMP + /* Return 0 if the mismatched index (%rdx + 2 * VEC_SIZE) is + after the maximum offset (%r11). */ + addq $(VEC_SIZE * 2), %rdx + cmpq %r11, %rdx + jae L(zero) +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi, %rdx), %ecx + cmpl (%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (VEC_SIZE * 2)(%rdi, %rdx), %ecx + cmpl (VEC_SIZE * 2)(%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (VEC_SIZE * 2)(%rdi, %rdx), %eax + movzbl (VEC_SIZE * 2)(%rsi, %rdx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(return_3_vec_size): + kmovd %k1, %ecx + tzcntl %ecx, %edx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edx +# endif +# ifdef USE_AS_STRNCMP + /* Return 0 if the mismatched index (%rdx + 3 * VEC_SIZE) is + after the maximum offset (%r11). */ + addq $(VEC_SIZE * 3), %rdx + cmpq %r11, %rdx + jae L(zero) +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi, %rdx), %ecx + cmpl (%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (VEC_SIZE * 3)(%rdi, %rdx), %ecx + cmpl (VEC_SIZE * 3)(%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (VEC_SIZE * 3)(%rdi, %rdx), %eax + movzbl (VEC_SIZE * 3)(%rsi, %rdx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(next_3_vectors): + VMOVU VEC_SIZE(%rdi), %YMM0 + VMOVU VEC_SIZE(%rsi), %YMM1 + /* Each bit in K0 represents a mismatch in YMM0 and YMM1. */ + VPCMP $4, %YMM0, %YMM1, %k0 + VPCMP $0, %YMMZERO, %YMM0, %k1 + VPCMP $0, %YMMZERO, %YMM1, %k2 + /* Each bit in K1 represents a NULL in YMM0 or YMM1. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + ktestd %k1, %k1 + jne L(return_vec_size) + + VMOVU (VEC_SIZE * 2)(%rdi), %YMM2 + VMOVU (VEC_SIZE * 3)(%rdi), %YMM3 + VMOVU (VEC_SIZE * 2)(%rsi), %YMM4 + VMOVU (VEC_SIZE * 3)(%rsi), %YMM5 + + /* Each bit in K0 represents a mismatch in YMM2 and YMM4. */ + VPCMP $4, %YMM2, %YMM4, %k0 + VPCMP $0, %YMMZERO, %YMM2, %k1 + VPCMP $0, %YMMZERO, %YMM4, %k2 + /* Each bit in K1 represents a NULL in YMM2 or YMM4. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + ktestd %k1, %k1 + jne L(return_2_vec_size) + + /* Each bit in K0 represents a mismatch in YMM3 and YMM5. */ + VPCMP $4, %YMM3, %YMM5, %k0 + VPCMP $0, %YMMZERO, %YMM3, %k1 + VPCMP $0, %YMMZERO, %YMM5, %k2 + /* Each bit in K1 represents a NULL in YMM3 or YMM5. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + ktestd %k1, %k1 + jne L(return_3_vec_size) +L(main_loop_header): + leaq (VEC_SIZE * 4)(%rdi), %rdx + movl $PAGE_SIZE, %ecx + /* Align load via RAX. */ + andq $-(VEC_SIZE * 4), %rdx + subq %rdi, %rdx + leaq (%rdi, %rdx), %rax +# ifdef USE_AS_STRNCMP + /* Starting from this point, the maximum offset, or simply the + 'offset', DECREASES by the same amount when base pointers are + moved forward. Return 0 when: + 1) On match: offset <= the matched vector index. + 2) On mistmach, offset is before the mistmatched index. + */ + subq %rdx, %r11 + jbe L(zero) +# endif + addq %rsi, %rdx + movq %rdx, %rsi + andl $(PAGE_SIZE - 1), %esi + /* Number of bytes before page crossing. */ + subq %rsi, %rcx + /* Number of VEC_SIZE * 4 blocks before page crossing. */ + shrq $DIVIDE_BY_VEC_4_SHIFT, %rcx + /* ESI: Number of VEC_SIZE * 4 blocks before page crossing. */ + movl %ecx, %esi + jmp L(loop_start) + + .p2align 4 +L(loop): +# ifdef USE_AS_STRNCMP + /* Base pointers are moved forward by 4 * VEC_SIZE. Decrease + the maximum offset (%r11) by the same amount. */ + subq $(VEC_SIZE * 4), %r11 + jbe L(zero) +# endif + addq $(VEC_SIZE * 4), %rax + addq $(VEC_SIZE * 4), %rdx +L(loop_start): + testl %esi, %esi + leal -1(%esi), %esi + je L(loop_cross_page) +L(back_to_loop): + /* Main loop, comparing 4 vectors are a time. */ + VMOVA (%rax), %YMM0 + VMOVA VEC_SIZE(%rax), %YMM2 + VMOVA (VEC_SIZE * 2)(%rax), %YMM4 + VMOVA (VEC_SIZE * 3)(%rax), %YMM6 + VMOVU (%rdx), %YMM1 + VMOVU VEC_SIZE(%rdx), %YMM3 + VMOVU (VEC_SIZE * 2)(%rdx), %YMM5 + VMOVU (VEC_SIZE * 3)(%rdx), %YMM7 + + VPCMP $4, %YMM0, %YMM1, %k0 + VPCMP $0, %YMMZERO, %YMM0, %k1 + VPCMP $0, %YMMZERO, %YMM1, %k2 + kord %k1, %k2, %k1 + /* Each bit in K4 represents a NULL or a mismatch in YMM0 and + YMM1. */ + kord %k0, %k1, %k4 + + VPCMP $4, %YMM2, %YMM3, %k0 + VPCMP $0, %YMMZERO, %YMM2, %k1 + VPCMP $0, %YMMZERO, %YMM3, %k2 + kord %k1, %k2, %k1 + /* Each bit in K5 represents a NULL or a mismatch in YMM2 and + YMM3. */ + kord %k0, %k1, %k5 + + VPCMP $4, %YMM4, %YMM5, %k0 + VPCMP $0, %YMMZERO, %YMM4, %k1 + VPCMP $0, %YMMZERO, %YMM5, %k2 + kord %k1, %k2, %k1 + /* Each bit in K6 represents a NULL or a mismatch in YMM4 and + YMM5. */ + kord %k0, %k1, %k6 + + VPCMP $4, %YMM6, %YMM7, %k0 + VPCMP $0, %YMMZERO, %YMM6, %k1 + VPCMP $0, %YMMZERO, %YMM7, %k2 + kord %k1, %k2, %k1 + /* Each bit in K7 represents a NULL or a mismatch in YMM6 and + YMM7. */ + kord %k0, %k1, %k7 + + kord %k4, %k5, %k0 + kord %k6, %k7, %k1 + + /* Test each mask (32 bits) individually because for VEC_SIZE + == 32 is not possible to OR the four masks and keep all bits + in a 64-bit integer register, differing from SSE2 strcmp + where ORing is possible. */ + kortestd %k0, %k1 + je L(loop) + ktestd %k4, %k4 + je L(test_vec) + kmovd %k4, %edi + tzcntl %edi, %ecx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %ecx +# endif +# ifdef USE_AS_STRNCMP + cmpq %rcx, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %edi + cmpl (%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %edi + cmpl (%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(test_vec): +# ifdef USE_AS_STRNCMP + /* The first vector matched. Return 0 if the maximum offset + (%r11) <= VEC_SIZE. */ + cmpq $VEC_SIZE, %r11 + jbe L(zero) +# endif + ktestd %k5, %k5 + je L(test_2_vec) + kmovd %k5, %ecx + tzcntl %ecx, %edi +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edi +# endif +# ifdef USE_AS_STRNCMP + addq $VEC_SIZE, %rdi + cmpq %rdi, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rdi), %ecx + cmpl (%rdx, %rdi), %ecx + jne L(wcscmp_return) +# else + movzbl (%rax, %rdi), %eax + movzbl (%rdx, %rdi), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl VEC_SIZE(%rsi, %rdi), %ecx + cmpl VEC_SIZE(%rdx, %rdi), %ecx + jne L(wcscmp_return) +# else + movzbl VEC_SIZE(%rax, %rdi), %eax + movzbl VEC_SIZE(%rdx, %rdi), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(test_2_vec): +# ifdef USE_AS_STRNCMP + /* The first 2 vectors matched. Return 0 if the maximum offset + (%r11) <= 2 * VEC_SIZE. */ + cmpq $(VEC_SIZE * 2), %r11 + jbe L(zero) +# endif + ktestd %k6, %k6 + je L(test_3_vec) + kmovd %k6, %ecx + tzcntl %ecx, %edi +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edi +# endif +# ifdef USE_AS_STRNCMP + addq $(VEC_SIZE * 2), %rdi + cmpq %rdi, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rdi), %ecx + cmpl (%rdx, %rdi), %ecx + jne L(wcscmp_return) +# else + movzbl (%rax, %rdi), %eax + movzbl (%rdx, %rdi), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (VEC_SIZE * 2)(%rsi, %rdi), %ecx + cmpl (VEC_SIZE * 2)(%rdx, %rdi), %ecx + jne L(wcscmp_return) +# else + movzbl (VEC_SIZE * 2)(%rax, %rdi), %eax + movzbl (VEC_SIZE * 2)(%rdx, %rdi), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(test_3_vec): +# ifdef USE_AS_STRNCMP + /* The first 3 vectors matched. Return 0 if the maximum offset + (%r11) <= 3 * VEC_SIZE. */ + cmpq $(VEC_SIZE * 3), %r11 + jbe L(zero) +# endif + kmovd %k7, %esi + tzcntl %esi, %ecx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %ecx +# endif +# ifdef USE_AS_STRNCMP + addq $(VEC_SIZE * 3), %rcx + cmpq %rcx, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %esi + cmpl (%rdx, %rcx), %esi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (VEC_SIZE * 3)(%rsi, %rcx), %esi + cmpl (VEC_SIZE * 3)(%rdx, %rcx), %esi + jne L(wcscmp_return) +# else + movzbl (VEC_SIZE * 3)(%rax, %rcx), %eax + movzbl (VEC_SIZE * 3)(%rdx, %rcx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(loop_cross_page): + xorl %r10d, %r10d + movq %rdx, %rcx + /* Align load via RDX. We load the extra ECX bytes which should + be ignored. */ + andl $((VEC_SIZE * 4) - 1), %ecx + /* R10 is -RCX. */ + subq %rcx, %r10 + + /* This works only if VEC_SIZE * 2 == 64. */ +# if (VEC_SIZE * 2) != 64 +# error (VEC_SIZE * 2) != 64 +# endif + + /* Check if the first VEC_SIZE * 2 bytes should be ignored. */ + cmpl $(VEC_SIZE * 2), %ecx + jge L(loop_cross_page_2_vec) + + VMOVU (%rax, %r10), %YMM2 + VMOVU VEC_SIZE(%rax, %r10), %YMM3 + VMOVU (%rdx, %r10), %YMM4 + VMOVU VEC_SIZE(%rdx, %r10), %YMM5 + + VPCMP $4, %YMM4, %YMM2, %k0 + VPCMP $0, %YMMZERO, %YMM2, %k1 + VPCMP $0, %YMMZERO, %YMM4, %k2 + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch in YMM2 and + YMM4. */ + kord %k0, %k1, %k1 + + VPCMP $4, %YMM5, %YMM3, %k3 + VPCMP $0, %YMMZERO, %YMM3, %k4 + VPCMP $0, %YMMZERO, %YMM5, %k5 + kord %k4, %k5, %k4 + /* Each bit in K3 represents a NULL or a mismatch in YMM3 and + YMM5. */ + kord %k3, %k4, %k3 + +# ifdef USE_AS_WCSCMP + /* NB: Each bit in K1/K3 represents 4-byte element. */ + kshiftlw $8, %k3, %k2 + /* NB: Divide shift count by 4 since each bit in K1 represent 4 + bytes. */ + movl %ecx, %SHIFT_REG32 + sarl $2, %SHIFT_REG32 +# else + kshiftlq $32, %k3, %k2 +# endif + + /* Each bit in K1 represents a NULL or a mismatch. */ + korq %k1, %k2, %k1 + kmovq %k1, %rdi + + /* Since ECX < VEC_SIZE * 2, simply skip the first ECX bytes. */ + shrxq %SHIFT_REG64, %rdi, %rdi + testq %rdi, %rdi + je L(loop_cross_page_2_vec) + tzcntq %rdi, %rcx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %ecx +# endif +# ifdef USE_AS_STRNCMP + cmpq %rcx, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %edi + cmpl (%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %edi + cmpl (%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# endif + ret + + .p2align 4 +L(loop_cross_page_2_vec): + /* The first VEC_SIZE * 2 bytes match or are ignored. */ + VMOVU (VEC_SIZE * 2)(%rax, %r10), %YMM0 + VMOVU (VEC_SIZE * 3)(%rax, %r10), %YMM1 + VMOVU (VEC_SIZE * 2)(%rdx, %r10), %YMM2 + VMOVU (VEC_SIZE * 3)(%rdx, %r10), %YMM3 + + VPCMP $4, %YMM0, %YMM2, %k0 + VPCMP $0, %YMMZERO, %YMM0, %k1 + VPCMP $0, %YMMZERO, %YMM2, %k2 + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch in YMM0 and + YMM2. */ + kord %k0, %k1, %k1 + + VPCMP $4, %YMM1, %YMM3, %k3 + VPCMP $0, %YMMZERO, %YMM1, %k4 + VPCMP $0, %YMMZERO, %YMM3, %k5 + kord %k4, %k5, %k4 + /* Each bit in K3 represents a NULL or a mismatch in YMM1 and + YMM3. */ + kord %k3, %k4, %k3 + +# ifdef USE_AS_WCSCMP + /* NB: Each bit in K1/K3 represents 4-byte element. */ + kshiftlw $8, %k3, %k2 +# else + kshiftlq $32, %k3, %k2 +# endif + + /* Each bit in K1 represents a NULL or a mismatch. */ + korq %k1, %k2, %k1 + kmovq %k1, %rdi + + xorl %r8d, %r8d + /* If ECX > VEC_SIZE * 2, skip ECX - (VEC_SIZE * 2) bytes. */ + subl $(VEC_SIZE * 2), %ecx + jle 1f + /* R8 has number of bytes skipped. */ + movl %ecx, %r8d +# ifdef USE_AS_WCSCMP + /* NB: Divide shift count by 4 since each bit in K1 represent 4 + bytes. */ + sarl $2, %ecx +# endif + /* Skip ECX bytes. */ + shrq %cl, %rdi +1: + /* Before jumping back to the loop, set ESI to the number of + VEC_SIZE * 4 blocks before page crossing. */ + movl $(PAGE_SIZE / (VEC_SIZE * 4) - 1), %esi + + testq %rdi, %rdi +# ifdef USE_AS_STRNCMP + /* At this point, if %rdi value is 0, it already tested + VEC_SIZE*4+%r10 byte starting from %rax. This label + checks whether strncmp maximum offset reached or not. */ + je L(string_nbyte_offset_check) +# else + je L(back_to_loop) +# endif + tzcntq %rdi, %rcx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %ecx +# endif + addq %r10, %rcx + /* Adjust for number of bytes skipped. */ + addq %r8, %rcx +# ifdef USE_AS_STRNCMP + addq $(VEC_SIZE * 2), %rcx + subq %rcx, %r11 + jbe L(zero) +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (%rsi, %rcx), %edi + cmpl (%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (%rax, %rcx), %eax + movzbl (%rdx, %rcx), %edx + subl %edx, %eax +# endif +# else +# ifdef USE_AS_WCSCMP + movq %rax, %rsi + xorl %eax, %eax + movl (VEC_SIZE * 2)(%rsi, %rcx), %edi + cmpl (VEC_SIZE * 2)(%rdx, %rcx), %edi + jne L(wcscmp_return) +# else + movzbl (VEC_SIZE * 2)(%rax, %rcx), %eax + movzbl (VEC_SIZE * 2)(%rdx, %rcx), %edx + subl %edx, %eax +# endif +# endif + ret + +# ifdef USE_AS_STRNCMP +L(string_nbyte_offset_check): + leaq (VEC_SIZE * 4)(%r10), %r10 + cmpq %r10, %r11 + jbe L(zero) + jmp L(back_to_loop) +# endif + + .p2align 4 +L(cross_page_loop): + /* Check one byte/dword at a time. */ +# ifdef USE_AS_WCSCMP + cmpl %ecx, %eax +# else + subl %ecx, %eax +# endif + jne L(different) + addl $SIZE_OF_CHAR, %edx + cmpl $(VEC_SIZE * 4), %edx + je L(main_loop_header) +# ifdef USE_AS_STRNCMP + cmpq %r11, %rdx + jae L(zero) +# endif +# ifdef USE_AS_WCSCMP + movl (%rdi, %rdx), %eax + movl (%rsi, %rdx), %ecx +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %ecx +# endif + /* Check null char. */ + testl %eax, %eax + jne L(cross_page_loop) + /* Since %eax == 0, subtract is OK for both SIGNED and UNSIGNED + comparisons. */ + subl %ecx, %eax +# ifndef USE_AS_WCSCMP +L(different): +# endif + ret + +# ifdef USE_AS_WCSCMP + .p2align 4 +L(different): + /* Use movl to avoid modifying EFLAGS. */ + movl $0, %eax + setl %al + negl %eax + orl $1, %eax + ret +# endif + +# ifdef USE_AS_STRNCMP + .p2align 4 +L(zero): + xorl %eax, %eax + ret + + .p2align 4 +L(char0): +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi), %ecx + cmpl (%rsi), %ecx + jne L(wcscmp_return) +# else + movzbl (%rsi), %ecx + movzbl (%rdi), %eax + subl %ecx, %eax +# endif + ret +# endif + + .p2align 4 +L(last_vector): + addq %rdx, %rdi + addq %rdx, %rsi +# ifdef USE_AS_STRNCMP + subq %rdx, %r11 +# endif + tzcntl %ecx, %edx +# ifdef USE_AS_WCSCMP + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %edx +# endif +# ifdef USE_AS_STRNCMP + cmpq %r11, %rdx + jae L(zero) +# endif +# ifdef USE_AS_WCSCMP + xorl %eax, %eax + movl (%rdi, %rdx), %ecx + cmpl (%rsi, %rdx), %ecx + jne L(wcscmp_return) +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %edx + subl %edx, %eax +# endif + ret + + /* Comparing on page boundary region requires special treatment: + It must done one vector at the time, starting with the wider + ymm vector if possible, if not, with xmm. If fetching 16 bytes + (xmm) still passes the boundary, byte comparison must be done. + */ + .p2align 4 +L(cross_page): + /* Try one ymm vector at a time. */ + cmpl $(PAGE_SIZE - VEC_SIZE), %eax + jg L(cross_page_1_vector) +L(loop_1_vector): + VMOVU (%rdi, %rdx), %YMM0 + VMOVU (%rsi, %rdx), %YMM1 + + /* Each bit in K0 represents a mismatch in YMM0 and YMM1. */ + VPCMP $4, %YMM0, %YMM1, %k0 + VPCMP $0, %YMMZERO, %YMM0, %k1 + VPCMP $0, %YMMZERO, %YMM1, %k2 + /* Each bit in K1 represents a NULL in YMM0 or YMM1. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + kmovd %k1, %ecx + testl %ecx, %ecx + jne L(last_vector) + + addl $VEC_SIZE, %edx + + addl $VEC_SIZE, %eax +# ifdef USE_AS_STRNCMP + /* Return 0 if the current offset (%rdx) >= the maximum offset + (%r11). */ + cmpq %r11, %rdx + jae L(zero) +# endif + cmpl $(PAGE_SIZE - VEC_SIZE), %eax + jle L(loop_1_vector) +L(cross_page_1_vector): + /* Less than 32 bytes to check, try one xmm vector. */ + cmpl $(PAGE_SIZE - 16), %eax + jg L(cross_page_1_xmm) + VMOVU (%rdi, %rdx), %XMM0 + VMOVU (%rsi, %rdx), %XMM1 + + /* Each bit in K0 represents a mismatch in XMM0 and XMM1. */ + VPCMP $4, %XMM0, %XMM1, %k0 + VPCMP $0, %XMMZERO, %XMM0, %k1 + VPCMP $0, %XMMZERO, %XMM1, %k2 + /* Each bit in K1 represents a NULL in XMM0 or XMM1. */ + korw %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + korw %k0, %k1, %k1 + kmovw %k1, %ecx + testl %ecx, %ecx + jne L(last_vector) + + addl $16, %edx +# ifndef USE_AS_WCSCMP + addl $16, %eax +# endif +# ifdef USE_AS_STRNCMP + /* Return 0 if the current offset (%rdx) >= the maximum offset + (%r11). */ + cmpq %r11, %rdx + jae L(zero) +# endif + +L(cross_page_1_xmm): +# ifndef USE_AS_WCSCMP + /* Less than 16 bytes to check, try 8 byte vector. NB: No need + for wcscmp nor wcsncmp since wide char is 4 bytes. */ + cmpl $(PAGE_SIZE - 8), %eax + jg L(cross_page_8bytes) + vmovq (%rdi, %rdx), %XMM0 + vmovq (%rsi, %rdx), %XMM1 + + /* Each bit in K0 represents a mismatch in XMM0 and XMM1. */ + VPCMP $4, %XMM0, %XMM1, %k0 + VPCMP $0, %XMMZERO, %XMM0, %k1 + VPCMP $0, %XMMZERO, %XMM1, %k2 + /* Each bit in K1 represents a NULL in XMM0 or XMM1. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + kmovd %k1, %ecx + +# ifdef USE_AS_WCSCMP + /* Only last 2 bits are valid. */ + andl $0x3, %ecx +# else + /* Only last 8 bits are valid. */ + andl $0xff, %ecx +# endif + + testl %ecx, %ecx + jne L(last_vector) + + addl $8, %edx + addl $8, %eax +# ifdef USE_AS_STRNCMP + /* Return 0 if the current offset (%rdx) >= the maximum offset + (%r11). */ + cmpq %r11, %rdx + jae L(zero) +# endif + +L(cross_page_8bytes): + /* Less than 8 bytes to check, try 4 byte vector. */ + cmpl $(PAGE_SIZE - 4), %eax + jg L(cross_page_4bytes) + vmovd (%rdi, %rdx), %XMM0 + vmovd (%rsi, %rdx), %XMM1 + + /* Each bit in K0 represents a mismatch in XMM0 and XMM1. */ + VPCMP $4, %XMM0, %XMM1, %k0 + VPCMP $0, %XMMZERO, %XMM0, %k1 + VPCMP $0, %XMMZERO, %XMM1, %k2 + /* Each bit in K1 represents a NULL in XMM0 or XMM1. */ + kord %k1, %k2, %k1 + /* Each bit in K1 represents a NULL or a mismatch. */ + kord %k0, %k1, %k1 + kmovd %k1, %ecx + +# ifdef USE_AS_WCSCMP + /* Only the last bit is valid. */ + andl $0x1, %ecx +# else + /* Only last 4 bits are valid. */ + andl $0xf, %ecx +# endif + + testl %ecx, %ecx + jne L(last_vector) + + addl $4, %edx +# ifdef USE_AS_STRNCMP + /* Return 0 if the current offset (%rdx) >= the maximum offset + (%r11). */ + cmpq %r11, %rdx + jae L(zero) +# endif + +L(cross_page_4bytes): +# endif + /* Less than 4 bytes to check, try one byte/dword at a time. */ +# ifdef USE_AS_STRNCMP + cmpq %r11, %rdx + jae L(zero) +# endif +# ifdef USE_AS_WCSCMP + movl (%rdi, %rdx), %eax + movl (%rsi, %rdx), %ecx +# else + movzbl (%rdi, %rdx), %eax + movzbl (%rsi, %rdx), %ecx +# endif + testl %eax, %eax + jne L(cross_page_loop) + subl %ecx, %eax + ret +END (STRCMP) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strcmp.c =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strcmp.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcmp.c 2021-03-10 09:01:00.936639295 +0100 @@ -30,16 +30,29 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI2) + && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_AVX2_STRCMP)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load)) return OPTIMIZE (sse2_unaligned); Index: glibc-2.31/sysdeps/x86_64/multiarch/strlen-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strlen-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,436 @@ +/* strlen/strnlen/wcslen/wcsnlen optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef STRLEN +# define STRLEN __strlen_evex +# endif + +# define VMOVA vmovdqa64 + +# ifdef USE_AS_WCSLEN +# define VPCMP vpcmpd +# define VPMINU vpminud +# define SHIFT_REG r9d +# else +# define VPCMP vpcmpb +# define VPMINU vpminub +# define SHIFT_REG ecx +# endif + +# define XMMZERO xmm16 +# define YMMZERO ymm16 +# define YMM1 ymm17 +# define YMM2 ymm18 +# define YMM3 ymm19 +# define YMM4 ymm20 +# define YMM5 ymm21 +# define YMM6 ymm22 + +# define VEC_SIZE 32 + + .section .text.evex,"ax",@progbits +ENTRY (STRLEN) +# ifdef USE_AS_STRNLEN + /* Check for zero length. */ + test %RSI_LP, %RSI_LP + jz L(zero) +# ifdef USE_AS_WCSLEN + shl $2, %RSI_LP +# elif defined __ILP32__ + /* Clear the upper 32 bits. */ + movl %esi, %esi +# endif + mov %RSI_LP, %R8_LP +# endif + movl %edi, %ecx + movq %rdi, %rdx + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + + /* Check if we may cross page boundary with one vector load. */ + andl $(2 * VEC_SIZE - 1), %ecx + cmpl $VEC_SIZE, %ecx + ja L(cros_page_boundary) + + /* Check the first VEC_SIZE bytes. Each bit in K0 represents a + null byte. */ + VPCMP $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + +# ifdef USE_AS_STRNLEN + jnz L(first_vec_x0_check) + /* Adjust length and check the end of data. */ + subq $VEC_SIZE, %rsi + jbe L(max) +# else + jnz L(first_vec_x0) +# endif + + /* Align data for aligned loads in the loop. */ + addq $VEC_SIZE, %rdi + andl $(VEC_SIZE - 1), %ecx + andq $-VEC_SIZE, %rdi + +# ifdef USE_AS_STRNLEN + /* Adjust length. */ + addq %rcx, %rsi + + subq $(VEC_SIZE * 4), %rsi + jbe L(last_4x_vec_or_less) +# endif + jmp L(more_4x_vec) + + .p2align 4 +L(cros_page_boundary): + andl $(VEC_SIZE - 1), %ecx + andq $-VEC_SIZE, %rdi + +# ifdef USE_AS_WCSLEN + /* NB: Divide shift count by 4 since each bit in K0 represent 4 + bytes. */ + movl %ecx, %SHIFT_REG + sarl $2, %SHIFT_REG +# endif + VPCMP $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + + /* Remove the leading bytes. */ + sarxl %SHIFT_REG, %eax, %eax + testl %eax, %eax + jz L(aligned_more) + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif +# ifdef USE_AS_STRNLEN + /* Check the end of data. */ + cmpq %rax, %rsi + jbe L(max) +# endif + addq %rdi, %rax + addq %rcx, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(aligned_more): +# ifdef USE_AS_STRNLEN + /* "rcx" is less than VEC_SIZE. Calculate "rdx + rcx - VEC_SIZE" + with "rdx - (VEC_SIZE - rcx)" instead of "(rdx + rcx) - VEC_SIZE" + to void possible addition overflow. */ + negq %rcx + addq $VEC_SIZE, %rcx + + /* Check the end of data. */ + subq %rcx, %rsi + jbe L(max) +# endif + + addq $VEC_SIZE, %rdi + +# ifdef USE_AS_STRNLEN + subq $(VEC_SIZE * 4), %rsi + jbe L(last_4x_vec_or_less) +# endif + +L(more_4x_vec): + /* Check the first 4 * VEC_SIZE. Only one VEC_SIZE at a time + since data is only aligned to VEC_SIZE. */ + VPCMP $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + VPCMP $0, VEC_SIZE(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + VPCMP $0, (VEC_SIZE * 2)(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x2) + + VPCMP $0, (VEC_SIZE * 3)(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x3) + + addq $(VEC_SIZE * 4), %rdi + +# ifdef USE_AS_STRNLEN + subq $(VEC_SIZE * 4), %rsi + jbe L(last_4x_vec_or_less) +# endif + + /* Align data to 4 * VEC_SIZE. */ + movq %rdi, %rcx + andl $(4 * VEC_SIZE - 1), %ecx + andq $-(4 * VEC_SIZE), %rdi + +# ifdef USE_AS_STRNLEN + /* Adjust length. */ + addq %rcx, %rsi +# endif + + .p2align 4 +L(loop_4x_vec): + /* Compare 4 * VEC at a time forward. */ + VMOVA (%rdi), %YMM1 + VMOVA VEC_SIZE(%rdi), %YMM2 + VMOVA (VEC_SIZE * 2)(%rdi), %YMM3 + VMOVA (VEC_SIZE * 3)(%rdi), %YMM4 + + VPMINU %YMM1, %YMM2, %YMM5 + VPMINU %YMM3, %YMM4, %YMM6 + + VPMINU %YMM5, %YMM6, %YMM5 + VPCMP $0, %YMM5, %YMMZERO, %k0 + ktestd %k0, %k0 + jnz L(4x_vec_end) + + addq $(VEC_SIZE * 4), %rdi + +# ifndef USE_AS_STRNLEN + jmp L(loop_4x_vec) +# else + subq $(VEC_SIZE * 4), %rsi + ja L(loop_4x_vec) + +L(last_4x_vec_or_less): + /* Less than 4 * VEC and aligned to VEC_SIZE. */ + addl $(VEC_SIZE * 2), %esi + jle L(last_2x_vec) + + VPCMP $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0) + + VPCMP $0, VEC_SIZE(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x1) + + VPCMP $0, (VEC_SIZE * 2)(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x2_check) + subl $VEC_SIZE, %esi + jle L(max) + + VPCMP $0, (VEC_SIZE * 3)(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x3_check) + movq %r8, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(last_2x_vec): + addl $(VEC_SIZE * 2), %esi + + VPCMP $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0_check) + subl $VEC_SIZE, %esi + jle L(max) + + VPCMP $0, VEC_SIZE(%rdi), %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x1_check) + movq %r8, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x0_check): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rsi + jbe L(max) + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x1_check): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rsi + jbe L(max) + addq $VEC_SIZE, %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x2_check): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rsi + jbe L(max) + addq $(VEC_SIZE * 2), %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x3_check): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + /* Check the end of data. */ + cmpq %rax, %rsi + jbe L(max) + addq $(VEC_SIZE * 3), %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(max): + movq %r8, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(zero): + xorl %eax, %eax + ret +# endif + + .p2align 4 +L(first_vec_x0): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x1): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + addq $VEC_SIZE, %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(first_vec_x2): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + addq $(VEC_SIZE * 2), %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + + .p2align 4 +L(4x_vec_end): + VPCMP $0, %YMM1, %YMMZERO, %k0 + kmovd %k0, %eax + testl %eax, %eax + jnz L(first_vec_x0) + VPCMP $0, %YMM2, %YMMZERO, %k1 + kmovd %k1, %eax + testl %eax, %eax + jnz L(first_vec_x1) + VPCMP $0, %YMM3, %YMMZERO, %k2 + kmovd %k2, %eax + testl %eax, %eax + jnz L(first_vec_x2) + VPCMP $0, %YMM4, %YMMZERO, %k3 + kmovd %k3, %eax +L(first_vec_x3): + tzcntl %eax, %eax +# ifdef USE_AS_WCSLEN + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + sall $2, %eax +# endif + addq $(VEC_SIZE * 3), %rax + addq %rdi, %rax + subq %rdx, %rax +# ifdef USE_AS_WCSLEN + shrq $2, %rax +# endif + ret + +END (STRLEN) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strncmp-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncmp-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,3 @@ +#define STRCMP __strncmp_evex +#define USE_AS_STRNCMP 1 +#include "strcmp-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strncmp.c =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strncmp.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncmp.c 2021-03-10 09:01:00.940639347 +0100 @@ -30,16 +30,29 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI2) + && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_AVX2_STRCMP)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } if (CPU_FEATURES_CPU_P (cpu_features, SSE4_2) && !CPU_FEATURES_ARCH_P (cpu_features, Slow_SSE4_2)) Index: glibc-2.31/sysdeps/x86_64/multiarch/strnlen-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strnlen-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,4 @@ +#define STRLEN __strnlen_evex +#define USE_AS_STRNLEN 1 + +#include "strlen-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strrchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strrchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,265 @@ +/* strrchr/wcsrchr optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef STRRCHR +# define STRRCHR __strrchr_evex +# endif + +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 + +# ifdef USE_AS_WCSRCHR +# define VPBROADCAST vpbroadcastd +# define VPCMP vpcmpd +# define SHIFT_REG r8d +# else +# define VPBROADCAST vpbroadcastb +# define VPCMP vpcmpb +# define SHIFT_REG ecx +# endif + +# define XMMZERO xmm16 +# define YMMZERO ymm16 +# define YMMMATCH ymm17 +# define YMM1 ymm18 + +# define VEC_SIZE 32 + + .section .text.evex,"ax",@progbits +ENTRY (STRRCHR) + movl %edi, %ecx + /* Broadcast CHAR to YMMMATCH. */ + VPBROADCAST %esi, %YMMMATCH + + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + + /* Check if we may cross page boundary with one vector load. */ + andl $(2 * VEC_SIZE - 1), %ecx + cmpl $VEC_SIZE, %ecx + ja L(cros_page_boundary) + + VMOVU (%rdi), %YMM1 + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %ecx + kmovd %k1, %eax + + addq $VEC_SIZE, %rdi + + testl %eax, %eax + jnz L(first_vec) + + testl %ecx, %ecx + jnz L(return_null) + + andq $-VEC_SIZE, %rdi + xorl %edx, %edx + jmp L(aligned_loop) + + .p2align 4 +L(first_vec): + /* Check if there is a null byte. */ + testl %ecx, %ecx + jnz L(char_and_nul_in_first_vec) + + /* Remember the match and keep searching. */ + movl %eax, %edx + movq %rdi, %rsi + andq $-VEC_SIZE, %rdi + jmp L(aligned_loop) + + .p2align 4 +L(cros_page_boundary): + andl $(VEC_SIZE - 1), %ecx + andq $-VEC_SIZE, %rdi + +# ifdef USE_AS_WCSRCHR + /* NB: Divide shift count by 4 since each bit in K1 represent 4 + bytes. */ + movl %ecx, %SHIFT_REG + sarl $2, %SHIFT_REG +# endif + + VMOVA (%rdi), %YMM1 + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %edx + kmovd %k1, %eax + + shrxl %SHIFT_REG, %edx, %edx + shrxl %SHIFT_REG, %eax, %eax + addq $VEC_SIZE, %rdi + + /* Check if there is a CHAR. */ + testl %eax, %eax + jnz L(found_char) + + testl %edx, %edx + jnz L(return_null) + + jmp L(aligned_loop) + + .p2align 4 +L(found_char): + testl %edx, %edx + jnz L(char_and_nul) + + /* Remember the match and keep searching. */ + movl %eax, %edx + leaq (%rdi, %rcx), %rsi + + .p2align 4 +L(aligned_loop): + VMOVA (%rdi), %YMM1 + addq $VEC_SIZE, %rdi + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %ecx + kmovd %k1, %eax + orl %eax, %ecx + jnz L(char_nor_null) + + VMOVA (%rdi), %YMM1 + add $VEC_SIZE, %rdi + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %ecx + kmovd %k1, %eax + orl %eax, %ecx + jnz L(char_nor_null) + + VMOVA (%rdi), %YMM1 + addq $VEC_SIZE, %rdi + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %ecx + kmovd %k1, %eax + orl %eax, %ecx + jnz L(char_nor_null) + + VMOVA (%rdi), %YMM1 + addq $VEC_SIZE, %rdi + + /* Each bit in K0 represents a null byte in YMM1. */ + VPCMP $0, %YMMZERO, %YMM1, %k0 + /* Each bit in K1 represents a CHAR in YMM1. */ + VPCMP $0, %YMMMATCH, %YMM1, %k1 + kmovd %k0, %ecx + kmovd %k1, %eax + orl %eax, %ecx + jz L(aligned_loop) + + .p2align 4 +L(char_nor_null): + /* Find a CHAR or a null byte in a loop. */ + testl %eax, %eax + jnz L(match) +L(return_value): + testl %edx, %edx + jz L(return_null) + movl %edx, %eax + movq %rsi, %rdi + bsrl %eax, %eax +# ifdef USE_AS_WCSRCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq -VEC_SIZE(%rdi, %rax, 4), %rax +# else + leaq -VEC_SIZE(%rdi, %rax), %rax +# endif + ret + + .p2align 4 +L(match): + /* Find a CHAR. Check if there is a null byte. */ + kmovd %k0, %ecx + testl %ecx, %ecx + jnz L(find_nul) + + /* Remember the match and keep searching. */ + movl %eax, %edx + movq %rdi, %rsi + jmp L(aligned_loop) + + .p2align 4 +L(find_nul): + /* Mask out any matching bits after the null byte. */ + movl %ecx, %r8d + subl $1, %r8d + xorl %ecx, %r8d + andl %r8d, %eax + testl %eax, %eax + /* If there is no CHAR here, return the remembered one. */ + jz L(return_value) + bsrl %eax, %eax +# ifdef USE_AS_WCSRCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq -VEC_SIZE(%rdi, %rax, 4), %rax +# else + leaq -VEC_SIZE(%rdi, %rax), %rax +# endif + ret + + .p2align 4 +L(char_and_nul): + /* Find both a CHAR and a null byte. */ + addq %rcx, %rdi + movl %edx, %ecx +L(char_and_nul_in_first_vec): + /* Mask out any matching bits after the null byte. */ + movl %ecx, %r8d + subl $1, %r8d + xorl %ecx, %r8d + andl %r8d, %eax + testl %eax, %eax + /* Return null pointer if the null byte comes first. */ + jz L(return_null) + bsrl %eax, %eax +# ifdef USE_AS_WCSRCHR + /* NB: Multiply wchar_t count by 4 to get the number of bytes. */ + leaq -VEC_SIZE(%rdi, %rax, 4), %rax +# else + leaq -VEC_SIZE(%rdi, %rax), %rax +# endif + ret + + .p2align 4 +L(return_null): + xorl %eax, %eax + ret + +END (STRRCHR) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/wcschr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcschr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,3 @@ +#define STRCHR __wcschr_evex +#define USE_AS_WCSCHR 1 +#include "strchr-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcscmp-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcscmp-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,4 @@ +#define STRCMP __wcscmp_evex +#define USE_AS_WCSCMP 1 + +#include "strcmp-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcslen-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcslen-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,4 @@ +#define STRLEN __wcslen_evex +#define USE_AS_WCSLEN 1 + +#include "strlen-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsncmp-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsncmp-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,5 @@ +#define STRCMP __wcsncmp_evex +#define USE_AS_STRNCMP 1 +#define USE_AS_WCSCMP 1 + +#include "strcmp-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,5 @@ +#define STRLEN __wcsnlen_evex +#define USE_AS_WCSLEN 1 +#define USE_AS_STRNLEN 1 + +#include "strlen-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen.c =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/wcsnlen.c 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen.c 2021-03-10 09:01:00.940639347 +0100 @@ -29,16 +29,28 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (sse4_1) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable) + && CPU_FEATURES_CPU_P (cpu_features, BMI2)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } if (CPU_FEATURES_CPU_P (cpu_features, SSE4_1)) return OPTIMIZE (sse4_1); Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsrchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsrchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,3 @@ +#define STRRCHR __wcsrchr_evex +#define USE_AS_WCSRCHR 1 +#include "strrchr-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wmemchr-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wmemchr-evex.S 2021-03-10 09:01:00.924639138 +0100 @@ -0,0 +1,4 @@ +#define MEMCHR __wmemchr_evex +#define USE_AS_WMEMCHR 1 + +#include "memchr-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-strcpy.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-strcpy.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-strcpy.h 2021-03-10 09:01:00.936639295 +0100 @@ -25,16 +25,27 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) 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) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable)) + return OPTIMIZE (evex); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load)) return OPTIMIZE (sse2_unaligned); Index: glibc-2.31/sysdeps/x86_64/multiarch/stpcpy-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/stpcpy-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STPCPY +#define STRCPY __stpcpy_evex +#include "strcpy-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/stpncpy-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/stpncpy-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,4 @@ +#define USE_AS_STPCPY +#define USE_AS_STRNCPY +#define STRCPY __stpncpy_evex +#include "strcpy-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcat-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcat-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,283 @@ +/* strcat with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# include <sysdep.h> + +# ifndef STRCAT +# define STRCAT __strcat_evex +# endif + +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 + +/* zero register */ +# define XMMZERO xmm16 +# define YMMZERO ymm16 +# define YMM0 ymm17 +# define YMM1 ymm18 + +# define USE_AS_STRCAT + +/* Number of bytes in a vector register */ +# define VEC_SIZE 32 + + .section .text.evex,"ax",@progbits +ENTRY (STRCAT) + mov %rdi, %r9 +# ifdef USE_AS_STRNCAT + mov %rdx, %r8 +# endif + + xor %eax, %eax + mov %edi, %ecx + and $((VEC_SIZE * 4) - 1), %ecx + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + cmp $(VEC_SIZE * 3), %ecx + ja L(fourth_vector_boundary) + vpcmpb $0, (%rdi), %YMMZERO, %k0 + kmovd %k0, %edx + test %edx, %edx + jnz L(exit_null_on_first_vector) + mov %rdi, %rax + and $-VEC_SIZE, %rax + jmp L(align_vec_size_start) +L(fourth_vector_boundary): + mov %rdi, %rax + and $-VEC_SIZE, %rax + vpcmpb $0, (%rax), %YMMZERO, %k0 + mov $-1, %r10d + sub %rax, %rcx + shl %cl, %r10d + kmovd %k0, %edx + and %r10d, %edx + jnz L(exit) + +L(align_vec_size_start): + vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 + kmovd %k0, %edx + test %edx, %edx + jnz L(exit_null_on_second_vector) + + vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(exit_null_on_third_vector) + + vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 + kmovd %k2, %edx + test %edx, %edx + jnz L(exit_null_on_fourth_vector) + + vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 + kmovd %k3, %edx + test %edx, %edx + jnz L(exit_null_on_fifth_vector) + + vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 + add $(VEC_SIZE * 4), %rax + kmovd %k4, %edx + test %edx, %edx + jnz L(exit_null_on_second_vector) + + vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(exit_null_on_third_vector) + + vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 + kmovd %k2, %edx + test %edx, %edx + jnz L(exit_null_on_fourth_vector) + + vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 + kmovd %k3, %edx + test %edx, %edx + jnz L(exit_null_on_fifth_vector) + + vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 + kmovd %k4, %edx + add $(VEC_SIZE * 4), %rax + test %edx, %edx + jnz L(exit_null_on_second_vector) + + vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(exit_null_on_third_vector) + + vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 + kmovd %k2, %edx + test %edx, %edx + jnz L(exit_null_on_fourth_vector) + + vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 + kmovd %k3, %edx + test %edx, %edx + jnz L(exit_null_on_fifth_vector) + + vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 + add $(VEC_SIZE * 4), %rax + kmovd %k4, %edx + test %edx, %edx + jnz L(exit_null_on_second_vector) + + vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(exit_null_on_third_vector) + + vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 + kmovd %k2, %edx + test %edx, %edx + jnz L(exit_null_on_fourth_vector) + + vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 + kmovd %k3, %edx + test %edx, %edx + jnz L(exit_null_on_fifth_vector) + + test $((VEC_SIZE * 4) - 1), %rax + jz L(align_four_vec_loop) + + vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 + add $(VEC_SIZE * 5), %rax + kmovd %k4, %edx + test %edx, %edx + jnz L(exit) + + test $((VEC_SIZE * 4) - 1), %rax + jz L(align_four_vec_loop) + + vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 + add $VEC_SIZE, %rax + kmovd %k0, %edx + test %edx, %edx + jnz L(exit) + + test $((VEC_SIZE * 4) - 1), %rax + jz L(align_four_vec_loop) + + vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 + add $VEC_SIZE, %rax + kmovd %k0, %edx + test %edx, %edx + jnz L(exit) + + test $((VEC_SIZE * 4) - 1), %rax + jz L(align_four_vec_loop) + + vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k1 + add $VEC_SIZE, %rax + kmovd %k1, %edx + test %edx, %edx + jnz L(exit) + + add $VEC_SIZE, %rax + + .p2align 4 +L(align_four_vec_loop): + VMOVA (%rax), %YMM0 + VMOVA (VEC_SIZE * 2)(%rax), %YMM1 + vpminub VEC_SIZE(%rax), %YMM0, %YMM0 + vpminub (VEC_SIZE * 3)(%rax), %YMM1, %YMM1 + vpminub %YMM0, %YMM1, %YMM0 + /* If K0 != 0, there is a null byte. */ + vpcmpb $0, %YMM0, %YMMZERO, %k0 + add $(VEC_SIZE * 4), %rax + ktestd %k0, %k0 + jz L(align_four_vec_loop) + + vpcmpb $0, -(VEC_SIZE * 4)(%rax), %YMMZERO, %k0 + sub $(VEC_SIZE * 5), %rax + kmovd %k0, %edx + test %edx, %edx + jnz L(exit_null_on_second_vector) + + vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(exit_null_on_third_vector) + + vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 + kmovd %k2, %edx + test %edx, %edx + jnz L(exit_null_on_fourth_vector) + + vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 + kmovd %k3, %edx + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $(VEC_SIZE * 4), %rax + jmp L(StartStrcpyPart) + + .p2align 4 +L(exit): + sub %rdi, %rax +L(exit_null_on_first_vector): + bsf %rdx, %rdx + add %rdx, %rax + jmp L(StartStrcpyPart) + + .p2align 4 +L(exit_null_on_second_vector): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $VEC_SIZE, %rax + jmp L(StartStrcpyPart) + + .p2align 4 +L(exit_null_on_third_vector): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $(VEC_SIZE * 2), %rax + jmp L(StartStrcpyPart) + + .p2align 4 +L(exit_null_on_fourth_vector): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $(VEC_SIZE * 3), %rax + jmp L(StartStrcpyPart) + + .p2align 4 +L(exit_null_on_fifth_vector): + sub %rdi, %rax + bsf %rdx, %rdx + add %rdx, %rax + add $(VEC_SIZE * 4), %rax + + .p2align 4 +L(StartStrcpyPart): + lea (%r9, %rax), %rdi + mov %rsi, %rcx + mov %r9, %rax /* save result */ + +# ifdef USE_AS_STRNCAT + test %r8, %r8 + jz L(ExitZero) +# define USE_AS_STRNCPY +# endif + +# include "strcpy-evex.S" +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strcpy-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcpy-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,1007 @@ +/* strcpy with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +# ifndef USE_AS_STRCAT +# include <sysdep.h> + +# ifndef STRCPY +# define STRCPY __strcpy_evex +# endif + +# endif + +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 + +/* Number of bytes in a vector register */ +# ifndef VEC_SIZE +# define VEC_SIZE 32 +# endif + +# define XMM3 xmm19 + +# define YMM3 ymm19 +# define YMM4 ymm20 +# define YMM5 ymm21 +# define YMM6 ymm22 +# define YMM7 ymm23 + +# ifndef USE_AS_STRCAT + +/* zero register */ +# define XMMZERO xmm16 +# define YMMZERO ymm16 + +# define XMM1 xmm17 +# define XMM2 xmm18 + +# define YMM1 ymm17 +# define YMM2 ymm18 + + .section .text.evex,"ax",@progbits +ENTRY (STRCPY) +# ifdef USE_AS_STRNCPY + mov %RDX_LP, %R8_LP + test %R8_LP, %R8_LP + jz L(ExitZero) +# endif + mov %rsi, %rcx +# ifndef USE_AS_STPCPY + mov %rdi, %rax /* save result */ +# endif + +# endif + + vpxorq %XMMZERO, %XMMZERO, %XMMZERO + + and $((VEC_SIZE * 4) - 1), %ecx + cmp $(VEC_SIZE * 2), %ecx + jbe L(SourceStringAlignmentLessTwoVecSize) + + and $-VEC_SIZE, %rsi + and $(VEC_SIZE - 1), %ecx + + vpcmpb $0, (%rsi), %YMMZERO, %k0 + kmovd %k0, %edx + shr %cl, %rdx + +# ifdef USE_AS_STRNCPY +# if defined USE_AS_STPCPY || defined USE_AS_STRCAT + mov $VEC_SIZE, %r10 + sub %rcx, %r10 + cmp %r10, %r8 +# else + mov $(VEC_SIZE + 1), %r10 + sub %rcx, %r10 + cmp %r10, %r8 +# endif + jbe L(CopyVecSizeTailCase2OrCase3) +# endif + test %edx, %edx + jnz L(CopyVecSizeTail) + + vpcmpb $0, VEC_SIZE(%rsi), %YMMZERO, %k1 + kmovd %k1, %edx + +# ifdef USE_AS_STRNCPY + add $VEC_SIZE, %r10 + cmp %r10, %r8 + jbe L(CopyTwoVecSizeCase2OrCase3) +# endif + test %edx, %edx + jnz L(CopyTwoVecSize) + + VMOVU (%rsi, %rcx), %YMM2 /* copy VEC_SIZE bytes */ + VMOVU %YMM2, (%rdi) + +/* If source address alignment != destination address alignment */ + .p2align 4 +L(UnalignVecSizeBoth): + sub %rcx, %rdi +# ifdef USE_AS_STRNCPY + add %rcx, %r8 + sbb %rcx, %rcx + or %rcx, %r8 +# endif + mov $VEC_SIZE, %rcx + VMOVA (%rsi, %rcx), %YMM2 + VMOVU %YMM2, (%rdi, %rcx) + VMOVA VEC_SIZE(%rsi, %rcx), %YMM2 + vpcmpb $0, %YMM2, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $(VEC_SIZE * 3), %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec2) +# else + jnz L(CopyVecSize) +# endif + + VMOVU %YMM2, (%rdi, %rcx) + VMOVA VEC_SIZE(%rsi, %rcx), %YMM3 + vpcmpb $0, %YMM3, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec3) +# else + jnz L(CopyVecSize) +# endif + + VMOVU %YMM3, (%rdi, %rcx) + VMOVA VEC_SIZE(%rsi, %rcx), %YMM4 + vpcmpb $0, %YMM4, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec4) +# else + jnz L(CopyVecSize) +# endif + + VMOVU %YMM4, (%rdi, %rcx) + VMOVA VEC_SIZE(%rsi, %rcx), %YMM2 + vpcmpb $0, %YMM2, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec2) +# else + jnz L(CopyVecSize) +# endif + + VMOVU %YMM2, (%rdi, %rcx) + VMOVA VEC_SIZE(%rsi, %rcx), %YMM2 + vpcmpb $0, %YMM2, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec2) +# else + jnz L(CopyVecSize) +# endif + + VMOVA VEC_SIZE(%rsi, %rcx), %YMM3 + VMOVU %YMM2, (%rdi, %rcx) + vpcmpb $0, %YMM3, %YMMZERO, %k0 + kmovd %k0, %edx + add $VEC_SIZE, %rcx +# ifdef USE_AS_STRNCPY + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) +# endif + test %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec3) +# else + jnz L(CopyVecSize) +# endif + + VMOVU %YMM3, (%rdi, %rcx) + mov %rsi, %rdx + lea VEC_SIZE(%rsi, %rcx), %rsi + and $-(VEC_SIZE * 4), %rsi + sub %rsi, %rdx + sub %rdx, %rdi +# ifdef USE_AS_STRNCPY + lea (VEC_SIZE * 8)(%r8, %rdx), %r8 +# endif +L(UnalignedFourVecSizeLoop): + VMOVA (%rsi), %YMM4 + VMOVA VEC_SIZE(%rsi), %YMM5 + VMOVA (VEC_SIZE * 2)(%rsi), %YMM6 + VMOVA (VEC_SIZE * 3)(%rsi), %YMM7 + vpminub %YMM5, %YMM4, %YMM2 + vpminub %YMM7, %YMM6, %YMM3 + vpminub %YMM2, %YMM3, %YMM2 + /* If K7 != 0, there is a null byte. */ + vpcmpb $0, %YMM2, %YMMZERO, %k7 + kmovd %k7, %edx +# ifdef USE_AS_STRNCPY + sub $(VEC_SIZE * 4), %r8 + jbe L(UnalignedLeaveCase2OrCase3) +# endif + test %edx, %edx + jnz L(UnalignedFourVecSizeLeave) + +L(UnalignedFourVecSizeLoop_start): + add $(VEC_SIZE * 4), %rdi + add $(VEC_SIZE * 4), %rsi + VMOVU %YMM4, -(VEC_SIZE * 4)(%rdi) + VMOVA (%rsi), %YMM4 + VMOVU %YMM5, -(VEC_SIZE * 3)(%rdi) + VMOVA VEC_SIZE(%rsi), %YMM5 + vpminub %YMM5, %YMM4, %YMM2 + VMOVU %YMM6, -(VEC_SIZE * 2)(%rdi) + VMOVA (VEC_SIZE * 2)(%rsi), %YMM6 + VMOVU %YMM7, -VEC_SIZE(%rdi) + VMOVA (VEC_SIZE * 3)(%rsi), %YMM7 + vpminub %YMM7, %YMM6, %YMM3 + vpminub %YMM2, %YMM3, %YMM2 + /* If K7 != 0, there is a null byte. */ + vpcmpb $0, %YMM2, %YMMZERO, %k7 + kmovd %k7, %edx +# ifdef USE_AS_STRNCPY + sub $(VEC_SIZE * 4), %r8 + jbe L(UnalignedLeaveCase2OrCase3) +# endif + test %edx, %edx + jz L(UnalignedFourVecSizeLoop_start) + +L(UnalignedFourVecSizeLeave): + vpcmpb $0, %YMM4, %YMMZERO, %k1 + kmovd %k1, %edx + test %edx, %edx + jnz L(CopyVecSizeUnaligned_0) + + vpcmpb $0, %YMM5, %YMMZERO, %k2 + kmovd %k2, %ecx + test %ecx, %ecx + jnz L(CopyVecSizeUnaligned_16) + + vpcmpb $0, %YMM6, %YMMZERO, %k3 + kmovd %k3, %edx + test %edx, %edx + jnz L(CopyVecSizeUnaligned_32) + + vpcmpb $0, %YMM7, %YMMZERO, %k4 + kmovd %k4, %ecx + bsf %ecx, %edx + VMOVU %YMM4, (%rdi) + VMOVU %YMM5, VEC_SIZE(%rdi) + VMOVU %YMM6, (VEC_SIZE * 2)(%rdi) +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT +# ifdef USE_AS_STPCPY + lea (VEC_SIZE * 3)(%rdi, %rdx), %rax +# endif + VMOVU %YMM7, (VEC_SIZE * 3)(%rdi) + add $(VEC_SIZE - 1), %r8 + sub %rdx, %r8 + lea ((VEC_SIZE * 3) + 1)(%rdi, %rdx), %rdi + jmp L(StrncpyFillTailWithZero) +# else + add $(VEC_SIZE * 3), %rsi + add $(VEC_SIZE * 3), %rdi + jmp L(CopyVecSizeExit) +# endif + +/* If source address alignment == destination address alignment */ + +L(SourceStringAlignmentLessTwoVecSize): + VMOVU (%rsi), %YMM3 + VMOVU VEC_SIZE(%rsi), %YMM2 + vpcmpb $0, %YMM3, %YMMZERO, %k0 + kmovd %k0, %edx + +# ifdef USE_AS_STRNCPY +# if defined USE_AS_STPCPY || defined USE_AS_STRCAT + cmp $VEC_SIZE, %r8 +# else + cmp $(VEC_SIZE + 1), %r8 +# endif + jbe L(CopyVecSizeTail1Case2OrCase3) +# endif + test %edx, %edx + jnz L(CopyVecSizeTail1) + + VMOVU %YMM3, (%rdi) + vpcmpb $0, %YMM2, %YMMZERO, %k0 + kmovd %k0, %edx + +# ifdef USE_AS_STRNCPY +# if defined USE_AS_STPCPY || defined USE_AS_STRCAT + cmp $(VEC_SIZE * 2), %r8 +# else + cmp $((VEC_SIZE * 2) + 1), %r8 +# endif + jbe L(CopyTwoVecSize1Case2OrCase3) +# endif + test %edx, %edx + jnz L(CopyTwoVecSize1) + + and $-VEC_SIZE, %rsi + and $(VEC_SIZE - 1), %ecx + jmp L(UnalignVecSizeBoth) + +/*------End of main part with loops---------------------*/ + +/* Case1 */ + +# if (!defined USE_AS_STRNCPY) || (defined USE_AS_STRCAT) + .p2align 4 +L(CopyVecSize): + add %rcx, %rdi +# endif +L(CopyVecSizeTail): + add %rcx, %rsi +L(CopyVecSizeTail1): + bsf %edx, %edx +L(CopyVecSizeExit): + cmp $32, %edx + jae L(Exit32_63) + cmp $16, %edx + jae L(Exit16_31) + cmp $8, %edx + jae L(Exit8_15) + cmp $4, %edx + jae L(Exit4_7) + cmp $3, %edx + je L(Exit3) + cmp $1, %edx + ja L(Exit2) + je L(Exit1) + movb $0, (%rdi) +# ifdef USE_AS_STPCPY + lea (%rdi), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub $1, %r8 + lea 1(%rdi), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(CopyTwoVecSize1): + add $VEC_SIZE, %rsi + add $VEC_SIZE, %rdi +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub $VEC_SIZE, %r8 +# endif + jmp L(CopyVecSizeTail1) + + .p2align 4 +L(CopyTwoVecSize): + bsf %edx, %edx + add %rcx, %rsi + add $VEC_SIZE, %edx + sub %ecx, %edx + jmp L(CopyVecSizeExit) + + .p2align 4 +L(CopyVecSizeUnaligned_0): + bsf %edx, %edx +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif + VMOVU %YMM4, (%rdi) + add $((VEC_SIZE * 4) - 1), %r8 + sub %rdx, %r8 + lea 1(%rdi, %rdx), %rdi + jmp L(StrncpyFillTailWithZero) +# else + jmp L(CopyVecSizeExit) +# endif + + .p2align 4 +L(CopyVecSizeUnaligned_16): + bsf %ecx, %edx + VMOVU %YMM4, (%rdi) +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT +# ifdef USE_AS_STPCPY + lea VEC_SIZE(%rdi, %rdx), %rax +# endif + VMOVU %YMM5, VEC_SIZE(%rdi) + add $((VEC_SIZE * 3) - 1), %r8 + sub %rdx, %r8 + lea (VEC_SIZE + 1)(%rdi, %rdx), %rdi + jmp L(StrncpyFillTailWithZero) +# else + add $VEC_SIZE, %rsi + add $VEC_SIZE, %rdi + jmp L(CopyVecSizeExit) +# endif + + .p2align 4 +L(CopyVecSizeUnaligned_32): + bsf %edx, %edx + VMOVU %YMM4, (%rdi) + VMOVU %YMM5, VEC_SIZE(%rdi) +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT +# ifdef USE_AS_STPCPY + lea (VEC_SIZE * 2)(%rdi, %rdx), %rax +# endif + VMOVU %YMM6, (VEC_SIZE * 2)(%rdi) + add $((VEC_SIZE * 2) - 1), %r8 + sub %rdx, %r8 + lea ((VEC_SIZE * 2) + 1)(%rdi, %rdx), %rdi + jmp L(StrncpyFillTailWithZero) +# else + add $(VEC_SIZE * 2), %rsi + add $(VEC_SIZE * 2), %rdi + jmp L(CopyVecSizeExit) +# endif + +# ifdef USE_AS_STRNCPY +# ifndef USE_AS_STRCAT + .p2align 4 +L(CopyVecSizeUnalignedVec6): + VMOVU %YMM6, (%rdi, %rcx) + jmp L(CopyVecSizeVecExit) + + .p2align 4 +L(CopyVecSizeUnalignedVec5): + VMOVU %YMM5, (%rdi, %rcx) + jmp L(CopyVecSizeVecExit) + + .p2align 4 +L(CopyVecSizeUnalignedVec4): + VMOVU %YMM4, (%rdi, %rcx) + jmp L(CopyVecSizeVecExit) + + .p2align 4 +L(CopyVecSizeUnalignedVec3): + VMOVU %YMM3, (%rdi, %rcx) + jmp L(CopyVecSizeVecExit) +# endif + +/* Case2 */ + + .p2align 4 +L(CopyVecSizeCase2): + add $VEC_SIZE, %r8 + add %rcx, %rdi + add %rcx, %rsi + bsf %edx, %edx + cmp %r8d, %edx + jb L(CopyVecSizeExit) + jmp L(StrncpyExit) + + .p2align 4 +L(CopyTwoVecSizeCase2): + add %rcx, %rsi + bsf %edx, %edx + add $VEC_SIZE, %edx + sub %ecx, %edx + cmp %r8d, %edx + jb L(CopyVecSizeExit) + jmp L(StrncpyExit) + +L(CopyVecSizeTailCase2): + add %rcx, %rsi + bsf %edx, %edx + cmp %r8d, %edx + jb L(CopyVecSizeExit) + jmp L(StrncpyExit) + +L(CopyVecSizeTail1Case2): + bsf %edx, %edx + cmp %r8d, %edx + jb L(CopyVecSizeExit) + jmp L(StrncpyExit) + +/* Case2 or Case3, Case3 */ + + .p2align 4 +L(CopyVecSizeCase2OrCase3): + test %rdx, %rdx + jnz L(CopyVecSizeCase2) +L(CopyVecSizeCase3): + add $VEC_SIZE, %r8 + add %rcx, %rdi + add %rcx, %rsi + jmp L(StrncpyExit) + + .p2align 4 +L(CopyTwoVecSizeCase2OrCase3): + test %rdx, %rdx + jnz L(CopyTwoVecSizeCase2) + add %rcx, %rsi + jmp L(StrncpyExit) + + .p2align 4 +L(CopyVecSizeTailCase2OrCase3): + test %rdx, %rdx + jnz L(CopyVecSizeTailCase2) + add %rcx, %rsi + jmp L(StrncpyExit) + + .p2align 4 +L(CopyTwoVecSize1Case2OrCase3): + add $VEC_SIZE, %rdi + add $VEC_SIZE, %rsi + sub $VEC_SIZE, %r8 +L(CopyVecSizeTail1Case2OrCase3): + test %rdx, %rdx + jnz L(CopyVecSizeTail1Case2) + jmp L(StrncpyExit) +# endif + +/*------------End labels regarding with copying 1-VEC_SIZE bytes--and 1-(VEC_SIZE*2) bytes----*/ + + .p2align 4 +L(Exit1): + movzwl (%rsi), %edx + mov %dx, (%rdi) +# ifdef USE_AS_STPCPY + lea 1(%rdi), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub $2, %r8 + lea 2(%rdi), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit2): + movzwl (%rsi), %ecx + mov %cx, (%rdi) + movb $0, 2(%rdi) +# ifdef USE_AS_STPCPY + lea 2(%rdi), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub $3, %r8 + lea 3(%rdi), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit3): + mov (%rsi), %edx + mov %edx, (%rdi) +# ifdef USE_AS_STPCPY + lea 3(%rdi), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub $4, %r8 + lea 4(%rdi), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit4_7): + mov (%rsi), %ecx + mov %ecx, (%rdi) + mov -3(%rsi, %rdx), %ecx + mov %ecx, -3(%rdi, %rdx) +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub %rdx, %r8 + sub $1, %r8 + lea 1(%rdi, %rdx), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit8_15): + mov (%rsi), %rcx + mov -7(%rsi, %rdx), %r9 + mov %rcx, (%rdi) + mov %r9, -7(%rdi, %rdx) +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub %rdx, %r8 + sub $1, %r8 + lea 1(%rdi, %rdx), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit16_31): + VMOVU (%rsi), %XMM2 + VMOVU -15(%rsi, %rdx), %XMM3 + VMOVU %XMM2, (%rdi) + VMOVU %XMM3, -15(%rdi, %rdx) +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub %rdx, %r8 + sub $1, %r8 + lea 1(%rdi, %rdx), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + + .p2align 4 +L(Exit32_63): + VMOVU (%rsi), %YMM2 + VMOVU -31(%rsi, %rdx), %YMM3 + VMOVU %YMM2, (%rdi) + VMOVU %YMM3, -31(%rdi, %rdx) +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif +# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT + sub %rdx, %r8 + sub $1, %r8 + lea 1(%rdi, %rdx), %rdi + jnz L(StrncpyFillTailWithZero) +# endif + ret + +# ifdef USE_AS_STRNCPY + + .p2align 4 +L(StrncpyExit1): + movzbl (%rsi), %edx + mov %dl, (%rdi) +# ifdef USE_AS_STPCPY + lea 1(%rdi), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, 1(%rdi) +# endif + ret + + .p2align 4 +L(StrncpyExit2): + movzwl (%rsi), %edx + mov %dx, (%rdi) +# ifdef USE_AS_STPCPY + lea 2(%rdi), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, 2(%rdi) +# endif + ret + + .p2align 4 +L(StrncpyExit3_4): + movzwl (%rsi), %ecx + movzwl -2(%rsi, %r8), %edx + mov %cx, (%rdi) + mov %dx, -2(%rdi, %r8) +# ifdef USE_AS_STPCPY + lea (%rdi, %r8), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi, %r8) +# endif + ret + + .p2align 4 +L(StrncpyExit5_8): + mov (%rsi), %ecx + mov -4(%rsi, %r8), %edx + mov %ecx, (%rdi) + mov %edx, -4(%rdi, %r8) +# ifdef USE_AS_STPCPY + lea (%rdi, %r8), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi, %r8) +# endif + ret + + .p2align 4 +L(StrncpyExit9_16): + mov (%rsi), %rcx + mov -8(%rsi, %r8), %rdx + mov %rcx, (%rdi) + mov %rdx, -8(%rdi, %r8) +# ifdef USE_AS_STPCPY + lea (%rdi, %r8), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi, %r8) +# endif + ret + + .p2align 4 +L(StrncpyExit17_32): + VMOVU (%rsi), %XMM2 + VMOVU -16(%rsi, %r8), %XMM3 + VMOVU %XMM2, (%rdi) + VMOVU %XMM3, -16(%rdi, %r8) +# ifdef USE_AS_STPCPY + lea (%rdi, %r8), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi, %r8) +# endif + ret + + .p2align 4 +L(StrncpyExit33_64): + /* 0/32, 31/16 */ + VMOVU (%rsi), %YMM2 + VMOVU -VEC_SIZE(%rsi, %r8), %YMM3 + VMOVU %YMM2, (%rdi) + VMOVU %YMM3, -VEC_SIZE(%rdi, %r8) +# ifdef USE_AS_STPCPY + lea (%rdi, %r8), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi, %r8) +# endif + ret + + .p2align 4 +L(StrncpyExit65): + /* 0/32, 32/32, 64/1 */ + VMOVU (%rsi), %YMM2 + VMOVU 32(%rsi), %YMM3 + mov 64(%rsi), %cl + VMOVU %YMM2, (%rdi) + VMOVU %YMM3, 32(%rdi) + mov %cl, 64(%rdi) +# ifdef USE_AS_STPCPY + lea 65(%rdi), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, 65(%rdi) +# endif + ret + +# ifndef USE_AS_STRCAT + + .p2align 4 +L(Fill1): + mov %dl, (%rdi) + ret + + .p2align 4 +L(Fill2): + mov %dx, (%rdi) + ret + + .p2align 4 +L(Fill3_4): + mov %dx, (%rdi) + mov %dx, -2(%rdi, %r8) + ret + + .p2align 4 +L(Fill5_8): + mov %edx, (%rdi) + mov %edx, -4(%rdi, %r8) + ret + + .p2align 4 +L(Fill9_16): + mov %rdx, (%rdi) + mov %rdx, -8(%rdi, %r8) + ret + + .p2align 4 +L(Fill17_32): + VMOVU %XMMZERO, (%rdi) + VMOVU %XMMZERO, -16(%rdi, %r8) + ret + + .p2align 4 +L(CopyVecSizeUnalignedVec2): + VMOVU %YMM2, (%rdi, %rcx) + + .p2align 4 +L(CopyVecSizeVecExit): + bsf %edx, %edx + add $(VEC_SIZE - 1), %r8 + add %rcx, %rdi +# ifdef USE_AS_STPCPY + lea (%rdi, %rdx), %rax +# endif + sub %rdx, %r8 + lea 1(%rdi, %rdx), %rdi + + .p2align 4 +L(StrncpyFillTailWithZero): + xor %edx, %edx + sub $VEC_SIZE, %r8 + jbe L(StrncpyFillExit) + + VMOVU %YMMZERO, (%rdi) + add $VEC_SIZE, %rdi + + mov %rdi, %rsi + and $(VEC_SIZE - 1), %esi + sub %rsi, %rdi + add %rsi, %r8 + sub $(VEC_SIZE * 4), %r8 + jb L(StrncpyFillLessFourVecSize) + +L(StrncpyFillLoopVmovdqa): + VMOVA %YMMZERO, (%rdi) + VMOVA %YMMZERO, VEC_SIZE(%rdi) + VMOVA %YMMZERO, (VEC_SIZE * 2)(%rdi) + VMOVA %YMMZERO, (VEC_SIZE * 3)(%rdi) + add $(VEC_SIZE * 4), %rdi + sub $(VEC_SIZE * 4), %r8 + jae L(StrncpyFillLoopVmovdqa) + +L(StrncpyFillLessFourVecSize): + add $(VEC_SIZE * 2), %r8 + jl L(StrncpyFillLessTwoVecSize) + VMOVA %YMMZERO, (%rdi) + VMOVA %YMMZERO, VEC_SIZE(%rdi) + add $(VEC_SIZE * 2), %rdi + sub $VEC_SIZE, %r8 + jl L(StrncpyFillExit) + VMOVA %YMMZERO, (%rdi) + add $VEC_SIZE, %rdi + jmp L(Fill) + + .p2align 4 +L(StrncpyFillLessTwoVecSize): + add $VEC_SIZE, %r8 + jl L(StrncpyFillExit) + VMOVA %YMMZERO, (%rdi) + add $VEC_SIZE, %rdi + jmp L(Fill) + + .p2align 4 +L(StrncpyFillExit): + add $VEC_SIZE, %r8 +L(Fill): + cmp $17, %r8d + jae L(Fill17_32) + cmp $9, %r8d + jae L(Fill9_16) + cmp $5, %r8d + jae L(Fill5_8) + cmp $3, %r8d + jae L(Fill3_4) + cmp $1, %r8d + ja L(Fill2) + je L(Fill1) + ret + +/* end of ifndef USE_AS_STRCAT */ +# endif + + .p2align 4 +L(UnalignedLeaveCase2OrCase3): + test %rdx, %rdx + jnz L(UnalignedFourVecSizeLeaveCase2) +L(UnalignedFourVecSizeLeaveCase3): + lea (VEC_SIZE * 4)(%r8), %rcx + and $-VEC_SIZE, %rcx + add $(VEC_SIZE * 3), %r8 + jl L(CopyVecSizeCase3) + VMOVU %YMM4, (%rdi) + sub $VEC_SIZE, %r8 + jb L(CopyVecSizeCase3) + VMOVU %YMM5, VEC_SIZE(%rdi) + sub $VEC_SIZE, %r8 + jb L(CopyVecSizeCase3) + VMOVU %YMM6, (VEC_SIZE * 2)(%rdi) + sub $VEC_SIZE, %r8 + jb L(CopyVecSizeCase3) + VMOVU %YMM7, (VEC_SIZE * 3)(%rdi) +# ifdef USE_AS_STPCPY + lea (VEC_SIZE * 4)(%rdi), %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (VEC_SIZE * 4)(%rdi) +# endif + ret + + .p2align 4 +L(UnalignedFourVecSizeLeaveCase2): + xor %ecx, %ecx + vpcmpb $0, %YMM4, %YMMZERO, %k1 + kmovd %k1, %edx + add $(VEC_SIZE * 3), %r8 + jle L(CopyVecSizeCase2OrCase3) + test %edx, %edx +# ifndef USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec4) +# else + jnz L(CopyVecSize) +# endif + vpcmpb $0, %YMM5, %YMMZERO, %k2 + kmovd %k2, %edx + VMOVU %YMM4, (%rdi) + add $VEC_SIZE, %rcx + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) + test %edx, %edx +# ifndef USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec5) +# else + jnz L(CopyVecSize) +# endif + + vpcmpb $0, %YMM6, %YMMZERO, %k3 + kmovd %k3, %edx + VMOVU %YMM5, VEC_SIZE(%rdi) + add $VEC_SIZE, %rcx + sub $VEC_SIZE, %r8 + jbe L(CopyVecSizeCase2OrCase3) + test %edx, %edx +# ifndef USE_AS_STRCAT + jnz L(CopyVecSizeUnalignedVec6) +# else + jnz L(CopyVecSize) +# endif + + vpcmpb $0, %YMM7, %YMMZERO, %k4 + kmovd %k4, %edx + VMOVU %YMM6, (VEC_SIZE * 2)(%rdi) + lea VEC_SIZE(%rdi, %rcx), %rdi + lea VEC_SIZE(%rsi, %rcx), %rsi + bsf %edx, %edx + cmp %r8d, %edx + jb L(CopyVecSizeExit) +L(StrncpyExit): + cmp $65, %r8d + je L(StrncpyExit65) + cmp $33, %r8d + jae L(StrncpyExit33_64) + cmp $17, %r8d + jae L(StrncpyExit17_32) + cmp $9, %r8d + jae L(StrncpyExit9_16) + cmp $5, %r8d + jae L(StrncpyExit5_8) + cmp $3, %r8d + jae L(StrncpyExit3_4) + cmp $1, %r8d + ja L(StrncpyExit2) + je L(StrncpyExit1) +# ifdef USE_AS_STPCPY + mov %rdi, %rax +# endif +# ifdef USE_AS_STRCAT + movb $0, (%rdi) +# endif + ret + + .p2align 4 +L(ExitZero): +# ifndef USE_AS_STRCAT + mov %rdi, %rax +# endif + ret + +# endif + +# ifndef USE_AS_STRCAT +END (STRCPY) +# else +END (STRCAT) +# endif +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strncat-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncat-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STRNCAT +#define STRCAT __strncat_evex +#include "strcat-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strncpy-evex.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncpy-evex.S 2021-03-10 09:01:00.928639190 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STRNCPY +#define STRCPY __strncpy_evex +#include "strcpy-evex.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memmove.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-memmove.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memmove.h 2021-03-10 09:01:00.948639453 +0100 @@ -29,6 +29,14 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned_erms) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned_rtm) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx_unaligned_erms_rtm) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned_erms) + attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned_erms) @@ -48,21 +56,42 @@ IFUNC_SELECTOR (void) if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable) && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512)) { - if (CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) - return OPTIMIZE (avx512_no_vzeroupper); + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx512_unaligned_erms); - if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) - return OPTIMIZE (avx512_unaligned_erms); + return OPTIMIZE (avx512_unaligned); + } - return OPTIMIZE (avx512_unaligned); + return OPTIMIZE (avx512_no_vzeroupper); } if (CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) { - if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) - return OPTIMIZE (avx_unaligned_erms); + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (evex_unaligned_erms); + + return OPTIMIZE (evex_unaligned); + } + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx_unaligned_erms_rtm); + + return OPTIMIZE (avx_unaligned_rtm); + } + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx_unaligned_erms); - return OPTIMIZE (avx_unaligned); + return OPTIMIZE (avx_unaligned); + } } if (!CPU_FEATURES_CPU_P (cpu_features, SSSE3) Index: glibc-2.31/sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memmove-evex-unaligned-erms.S 2021-03-10 09:01:00.932639243 +0100 @@ -0,0 +1,26 @@ +#if IS_IN (libc) +# define VEC_SIZE 32 +# define XMM0 xmm16 +# define XMM1 xmm17 +# define YMM0 ymm16 +# define YMM1 ymm17 +# define VEC0 ymm16 +# define VEC1 ymm17 +# define VEC2 ymm18 +# define VEC3 ymm19 +# define VEC4 ymm20 +# define VEC5 ymm21 +# define VEC6 ymm22 +# define VEC7 ymm23 +# define VEC8 ymm24 +# define VEC(i) VEC##i +# define VMOVNT vmovntdq +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 +# define VZEROUPPER + +# define SECTION(p) p##.evex +# define MEMMOVE_SYMBOL(p,s) p##_evex_##s + +# include "memmove-vec-unaligned-erms.S" +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S 2021-03-10 09:01:00.936639295 +0100 @@ -48,6 +48,14 @@ # define MEMMOVE_CHK_SYMBOL(p,s) MEMMOVE_SYMBOL(p, s) #endif +#ifndef XMM0 +# define XMM0 xmm0 +#endif + +#ifndef YMM0 +# define YMM0 ymm0 +#endif + #ifndef VZEROUPPER # if VEC_SIZE > 16 # define VZEROUPPER vzeroupper @@ -143,11 +151,12 @@ L(last_2x_vec): VMOVU -VEC_SIZE(%rsi,%rdx), %VEC(1) VMOVU %VEC(0), (%rdi) VMOVU %VEC(1), -VEC_SIZE(%rdi,%rdx) - VZEROUPPER #if !defined USE_MULTIARCH || !IS_IN (libc) L(nop): -#endif ret +#else + VZEROUPPER_RETURN +#endif #if defined USE_MULTIARCH && IS_IN (libc) END (MEMMOVE_SYMBOL (__memmove, unaligned)) @@ -240,8 +249,11 @@ L(last_2x_vec): VMOVU %VEC(0), (%rdi) VMOVU %VEC(1), -VEC_SIZE(%rdi,%rdx) L(return): - VZEROUPPER +#if VEC_SIZE > 16 + ZERO_UPPER_VEC_REGISTERS_RETURN +#else ret +#endif L(movsb): cmpq __x86_shared_non_temporal_threshold(%rip), %rdx @@ -291,21 +303,20 @@ L(less_vec): #if VEC_SIZE > 32 L(between_32_63): /* From 32 to 63. No branch when size == 32. */ - vmovdqu (%rsi), %ymm0 - vmovdqu -32(%rsi,%rdx), %ymm1 - vmovdqu %ymm0, (%rdi) - vmovdqu %ymm1, -32(%rdi,%rdx) - VZEROUPPER - ret + VMOVU (%rsi), %YMM0 + VMOVU -32(%rsi,%rdx), %YMM1 + VMOVU %YMM0, (%rdi) + VMOVU %YMM1, -32(%rdi,%rdx) + VZEROUPPER_RETURN #endif #if VEC_SIZE > 16 /* From 16 to 31. No branch when size == 16. */ L(between_16_31): - vmovdqu (%rsi), %xmm0 - vmovdqu -16(%rsi,%rdx), %xmm1 - vmovdqu %xmm0, (%rdi) - vmovdqu %xmm1, -16(%rdi,%rdx) - ret + VMOVU (%rsi), %XMM0 + VMOVU -16(%rsi,%rdx), %XMM1 + VMOVU %XMM0, (%rdi) + VMOVU %XMM1, -16(%rdi,%rdx) + VZEROUPPER_RETURN #endif L(between_8_15): /* From 8 to 15. No branch when size == 8. */ @@ -358,8 +369,7 @@ L(more_2x_vec): VMOVU %VEC(5), -(VEC_SIZE * 2)(%rdi,%rdx) VMOVU %VEC(6), -(VEC_SIZE * 3)(%rdi,%rdx) VMOVU %VEC(7), -(VEC_SIZE * 4)(%rdi,%rdx) - VZEROUPPER - ret + VZEROUPPER_RETURN L(last_4x_vec): /* Copy from 2 * VEC to 4 * VEC. */ VMOVU (%rsi), %VEC(0) @@ -370,8 +380,7 @@ L(last_4x_vec): VMOVU %VEC(1), VEC_SIZE(%rdi) VMOVU %VEC(2), -VEC_SIZE(%rdi,%rdx) VMOVU %VEC(3), -(VEC_SIZE * 2)(%rdi,%rdx) - VZEROUPPER - ret + VZEROUPPER_RETURN L(more_8x_vec): cmpq %rsi, %rdi @@ -427,8 +436,7 @@ L(loop_4x_vec_forward): VMOVU %VEC(8), -(VEC_SIZE * 3)(%rcx) /* Store the first VEC. */ VMOVU %VEC(4), (%r11) - VZEROUPPER - ret + VZEROUPPER_RETURN L(more_8x_vec_backward): /* Load the first 4 * VEC and last VEC to support overlapping @@ -479,8 +487,7 @@ L(loop_4x_vec_backward): VMOVU %VEC(7), (VEC_SIZE * 3)(%rdi) /* Store the last VEC. */ VMOVU %VEC(8), (%r11) - VZEROUPPER - ret + VZEROUPPER_RETURN #if (defined USE_MULTIARCH || VEC_SIZE == 16) && IS_IN (libc) L(large_forward): @@ -515,8 +522,7 @@ L(loop_large_forward): VMOVU %VEC(8), -(VEC_SIZE * 3)(%rcx) /* Store the first VEC. */ VMOVU %VEC(4), (%r11) - VZEROUPPER - ret + VZEROUPPER_RETURN L(large_backward): /* Don't use non-temporal store if there is overlap between @@ -550,8 +556,7 @@ L(loop_large_backward): VMOVU %VEC(7), (VEC_SIZE * 3)(%rdi) /* Store the last VEC. */ VMOVU %VEC(8), (%r11) - VZEROUPPER - ret + VZEROUPPER_RETURN #endif END (MEMMOVE_SYMBOL (__memmove, unaligned_erms)) Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memset.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-memset.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memset.h 2021-03-10 09:01:00.948639453 +0100 @@ -27,6 +27,14 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_erms) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_rtm) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_erms_rtm) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned_erms) + attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned_erms) @@ -45,21 +53,44 @@ IFUNC_SELECTOR (void) if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable) && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512)) { - if (CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) - return OPTIMIZE (avx512_no_vzeroupper); + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx512_unaligned_erms); - if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) - return OPTIMIZE (avx512_unaligned_erms); + return OPTIMIZE (avx512_unaligned); + } - return OPTIMIZE (avx512_unaligned); + return OPTIMIZE (avx512_no_vzeroupper); } if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable)) { - if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) - return OPTIMIZE (avx2_unaligned_erms); - else - return OPTIMIZE (avx2_unaligned); + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (evex_unaligned_erms); + + return OPTIMIZE (evex_unaligned); + } + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx2_unaligned_erms_rtm); + + return OPTIMIZE (avx2_unaligned_rtm); + } + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + { + if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) + return OPTIMIZE (avx2_unaligned_erms); + + return OPTIMIZE (avx2_unaligned); + } } if (CPU_FEATURES_CPU_P (cpu_features, ERMS)) Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-wmemset.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-wmemset.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-wmemset.h 2021-03-10 09:01:00.948639453 +0100 @@ -20,6 +20,9 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_rtm) + attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden; static inline void * @@ -27,14 +30,21 @@ IFUNC_SELECTOR (void) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) { - if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable) - && !CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512)) - return OPTIMIZE (avx512_unaligned); - else + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable)) + { + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512)) + return OPTIMIZE (avx512_unaligned); + + return OPTIMIZE (evex_unaligned); + } + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_unaligned_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) return OPTIMIZE (avx2_unaligned); } Index: glibc-2.31/sysdeps/x86_64/multiarch/memset-evex-unaligned-erms.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memset-evex-unaligned-erms.S 2021-03-10 09:01:00.932639243 +0100 @@ -0,0 +1,24 @@ +#if IS_IN (libc) +# define VEC_SIZE 32 +# define XMM0 xmm16 +# define YMM0 ymm16 +# define VEC0 ymm16 +# define VEC(i) VEC##i +# define VMOVU vmovdqu64 +# define VMOVA vmovdqa64 +# define VZEROUPPER + +# define MEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ + movq r, %rax; \ + vpbroadcastb d, %VEC0 + +# define WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ + movq r, %rax; \ + vpbroadcastd d, %VEC0 + +# define SECTION(p) p##.evex +# define MEMSET_SYMBOL(p,s) p##_evex_##s +# define WMEMSET_SYMBOL(p,s) p##_evex_##s + +# include "memset-vec-unaligned-erms.S" +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S 2021-03-10 09:01:00.936639295 +0100 @@ -34,20 +34,25 @@ # define WMEMSET_CHK_SYMBOL(p,s) WMEMSET_SYMBOL(p, s) #endif +#ifndef XMM0 +# define XMM0 xmm0 +#endif + +#ifndef YMM0 +# define YMM0 ymm0 +#endif + #ifndef VZEROUPPER # if VEC_SIZE > 16 # define VZEROUPPER vzeroupper +# define VZEROUPPER_SHORT_RETURN vzeroupper; ret # else # define VZEROUPPER # endif #endif #ifndef VZEROUPPER_SHORT_RETURN -# if VEC_SIZE > 16 -# define VZEROUPPER_SHORT_RETURN vzeroupper -# else -# define VZEROUPPER_SHORT_RETURN rep -# endif +# define VZEROUPPER_SHORT_RETURN rep; ret #endif #ifndef MOVQ @@ -77,7 +82,7 @@ ENTRY (__bzero) mov %RDI_LP, %RAX_LP /* Set return value. */ mov %RSI_LP, %RDX_LP /* Set n. */ - pxor %xmm0, %xmm0 + pxor %XMM0, %XMM0 jmp L(entry_from_bzero) END (__bzero) weak_alias (__bzero, bzero) @@ -119,8 +124,7 @@ L(entry_from_bzero): /* From VEC and to 2 * VEC. No branch when size == VEC_SIZE. */ VMOVU %VEC(0), -VEC_SIZE(%rdi,%rdx) VMOVU %VEC(0), (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN #if defined USE_MULTIARCH && IS_IN (libc) END (MEMSET_SYMBOL (__memset, unaligned)) @@ -143,14 +147,12 @@ ENTRY (__memset_erms) ENTRY (MEMSET_SYMBOL (__memset, erms)) # endif L(stosb): - /* Issue vzeroupper before rep stosb. */ - VZEROUPPER mov %RDX_LP, %RCX_LP movzbl %sil, %eax mov %RDI_LP, %RDX_LP rep stosb mov %RDX_LP, %RAX_LP - ret + VZEROUPPER_RETURN # if VEC_SIZE == 16 END (__memset_erms) # else @@ -177,8 +179,7 @@ ENTRY (MEMSET_SYMBOL (__memset, unaligne /* From VEC and to 2 * VEC. No branch when size == VEC_SIZE. */ VMOVU %VEC(0), -VEC_SIZE(%rdi,%rdx) VMOVU %VEC(0), (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN L(stosb_more_2x_vec): cmpq $REP_STOSB_THRESHOLD, %rdx @@ -192,8 +193,11 @@ L(more_2x_vec): VMOVU %VEC(0), -VEC_SIZE(%rdi,%rdx) VMOVU %VEC(0), -(VEC_SIZE * 2)(%rdi,%rdx) L(return): - VZEROUPPER +#if VEC_SIZE > 16 + ZERO_UPPER_VEC_REGISTERS_RETURN +#else ret +#endif L(loop_start): leaq (VEC_SIZE * 4)(%rdi), %rcx @@ -219,7 +223,6 @@ L(loop): cmpq %rcx, %rdx jne L(loop) VZEROUPPER_SHORT_RETURN - ret L(less_vec): /* Less than 1 VEC. */ # if VEC_SIZE != 16 && VEC_SIZE != 32 && VEC_SIZE != 64 @@ -233,7 +236,7 @@ L(less_vec): cmpb $16, %dl jae L(between_16_31) # endif - MOVQ %xmm0, %rcx + MOVQ %XMM0, %rcx cmpb $8, %dl jae L(between_8_15) cmpb $4, %dl @@ -243,40 +246,34 @@ L(less_vec): jb 1f movb %cl, (%rdi) 1: - VZEROUPPER - ret + VZEROUPPER_RETURN # if VEC_SIZE > 32 /* From 32 to 63. No branch when size == 32. */ L(between_32_63): - vmovdqu %ymm0, -32(%rdi,%rdx) - vmovdqu %ymm0, (%rdi) - VZEROUPPER - ret + VMOVU %YMM0, -32(%rdi,%rdx) + VMOVU %YMM0, (%rdi) + VZEROUPPER_RETURN # endif # if VEC_SIZE > 16 /* From 16 to 31. No branch when size == 16. */ L(between_16_31): - vmovdqu %xmm0, -16(%rdi,%rdx) - vmovdqu %xmm0, (%rdi) - VZEROUPPER - ret + VMOVU %XMM0, -16(%rdi,%rdx) + VMOVU %XMM0, (%rdi) + VZEROUPPER_RETURN # endif /* From 8 to 15. No branch when size == 8. */ L(between_8_15): movq %rcx, -8(%rdi,%rdx) movq %rcx, (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN L(between_4_7): /* From 4 to 7. No branch when size == 4. */ movl %ecx, -4(%rdi,%rdx) movl %ecx, (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN L(between_2_3): /* From 2 to 3. No branch when size == 2. */ movw %cx, -2(%rdi,%rdx) movw %cx, (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN END (MEMSET_SYMBOL (__memset, unaligned_erms)) Index: glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memcmp.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/ifunc-memcmp.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/ifunc-memcmp.h 2021-03-10 09:01:00.932639243 +0100 @@ -23,17 +23,28 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (sse4_1) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_movbe) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_movbe_rtm) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_movbe) attribute_hidden; static inline void * IFUNC_SELECTOR (void) { const struct cpu_features* cpu_features = __get_cpu_features (); - if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER) - && CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) + if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable) && CPU_FEATURES_CPU_P (cpu_features, MOVBE) && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) - return OPTIMIZE (avx2_movbe); + { + if (CPU_FEATURES_ARCH_P (cpu_features, AVX512VL_Usable) + && CPU_FEATURES_ARCH_P (cpu_features, AVX512BW_Usable)) + return OPTIMIZE (evex_movbe); + + if (CPU_FEATURES_CPU_P (cpu_features, RTM)) + return OPTIMIZE (avx2_movbe_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2_movbe); + } if (CPU_FEATURES_CPU_P (cpu_features, SSE4_1)) return OPTIMIZE (sse4_1); Index: glibc-2.31/sysdeps/x86_64/multiarch/memcmp-evex-movbe.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memcmp-evex-movbe.S 2021-03-10 09:01:00.932639243 +0100 @@ -0,0 +1,440 @@ +/* memcmp/wmemcmp optimized with 256-bit EVEX instructions. + Copyright (C) 2021 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/>. */ + +#if IS_IN (libc) + +/* memcmp/wmemcmp is implemented as: + 1. For size from 2 to 7 bytes, load as big endian with movbe and bswap + to avoid branches. + 2. Use overlapping compare to avoid branch. + 3. Use vector compare when size >= 4 bytes for memcmp or size >= 8 + bytes for wmemcmp. + 4. If size is 8 * VEC_SIZE or less, unroll the loop. + 5. Compare 4 * VEC_SIZE at a time with the aligned first memory + area. + 6. Use 2 vector compares when size is 2 * VEC_SIZE or less. + 7. Use 4 vector compares when size is 4 * VEC_SIZE or less. + 8. Use 8 vector compares when size is 8 * VEC_SIZE or less. */ + +# include <sysdep.h> + +# ifndef MEMCMP +# define MEMCMP __memcmp_evex_movbe +# endif + +# define VMOVU vmovdqu64 + +# ifdef USE_AS_WMEMCMP +# define VPCMPEQ vpcmpeqd +# else +# define VPCMPEQ vpcmpeqb +# endif + +# define XMM1 xmm17 +# define XMM2 xmm18 +# define YMM1 ymm17 +# define YMM2 ymm18 +# define YMM3 ymm19 +# define YMM4 ymm20 +# define YMM5 ymm21 +# define YMM6 ymm22 + +# define VEC_SIZE 32 +# ifdef USE_AS_WMEMCMP +# define VEC_MASK 0xff +# define XMM_MASK 0xf +# else +# define VEC_MASK 0xffffffff +# define XMM_MASK 0xffff +# endif + +/* Warning! + wmemcmp has to use SIGNED comparison for elements. + memcmp has to use UNSIGNED comparison for elemnts. +*/ + + .section .text.evex,"ax",@progbits +ENTRY (MEMCMP) +# ifdef USE_AS_WMEMCMP + shl $2, %RDX_LP +# elif defined __ILP32__ + /* Clear the upper 32 bits. */ + movl %edx, %edx +# endif + cmp $VEC_SIZE, %RDX_LP + jb L(less_vec) + + /* From VEC to 2 * VEC. No branch when size == VEC_SIZE. */ + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k1 + kmovd %k1, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + + cmpq $(VEC_SIZE * 2), %rdx + jbe L(last_vec) + + /* More than 2 * VEC. */ + cmpq $(VEC_SIZE * 8), %rdx + ja L(more_8x_vec) + cmpq $(VEC_SIZE * 4), %rdx + jb L(last_4x_vec) + + /* From 4 * VEC to 8 * VEC, inclusively. */ + VMOVU (%rsi), %YMM1 + VPCMPEQ (%rdi), %YMM1, %k1 + + VMOVU VEC_SIZE(%rsi), %YMM2 + VPCMPEQ VEC_SIZE(%rdi), %YMM2, %k2 + + VMOVU (VEC_SIZE * 2)(%rsi), %YMM3 + VPCMPEQ (VEC_SIZE * 2)(%rdi), %YMM3, %k3 + + VMOVU (VEC_SIZE * 3)(%rsi), %YMM4 + VPCMPEQ (VEC_SIZE * 3)(%rdi), %YMM4, %k4 + + kandd %k1, %k2, %k5 + kandd %k3, %k4, %k6 + kandd %k5, %k6, %k6 + + kmovd %k6, %eax + cmpl $VEC_MASK, %eax + jne L(4x_vec_end) + + leaq -(4 * VEC_SIZE)(%rdi, %rdx), %rdi + leaq -(4 * VEC_SIZE)(%rsi, %rdx), %rsi + VMOVU (%rsi), %YMM1 + VPCMPEQ (%rdi), %YMM1, %k1 + + VMOVU VEC_SIZE(%rsi), %YMM2 + VPCMPEQ VEC_SIZE(%rdi), %YMM2, %k2 + kandd %k1, %k2, %k5 + + VMOVU (VEC_SIZE * 2)(%rsi), %YMM3 + VPCMPEQ (VEC_SIZE * 2)(%rdi), %YMM3, %k3 + kandd %k3, %k5, %k5 + + VMOVU (VEC_SIZE * 3)(%rsi), %YMM4 + VPCMPEQ (VEC_SIZE * 3)(%rdi), %YMM4, %k4 + kandd %k4, %k5, %k5 + + kmovd %k5, %eax + cmpl $VEC_MASK, %eax + jne L(4x_vec_end) + xorl %eax, %eax + ret + + .p2align 4 +L(last_2x_vec): + /* From VEC to 2 * VEC. No branch when size == VEC_SIZE. */ + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + +L(last_vec): + /* Use overlapping loads to avoid branches. */ + leaq -VEC_SIZE(%rdi, %rdx), %rdi + leaq -VEC_SIZE(%rsi, %rdx), %rsi + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + ret + + .p2align 4 +L(first_vec): + /* A byte or int32 is different within 16 or 32 bytes. */ + tzcntl %eax, %ecx +# ifdef USE_AS_WMEMCMP + xorl %eax, %eax + movl (%rdi, %rcx, 4), %edx + cmpl (%rsi, %rcx, 4), %edx +L(wmemcmp_return): + setl %al + negl %eax + orl $1, %eax +# else + movzbl (%rdi, %rcx), %eax + movzbl (%rsi, %rcx), %edx + sub %edx, %eax +# endif + ret + +# ifdef USE_AS_WMEMCMP + .p2align 4 +L(4): + xorl %eax, %eax + movl (%rdi), %edx + cmpl (%rsi), %edx + jne L(wmemcmp_return) + ret +# else + .p2align 4 +L(between_4_7): + /* Load as big endian with overlapping movbe to avoid branches. */ + movbe (%rdi), %eax + movbe (%rsi), %ecx + shlq $32, %rax + shlq $32, %rcx + movbe -4(%rdi, %rdx), %edi + movbe -4(%rsi, %rdx), %esi + orq %rdi, %rax + orq %rsi, %rcx + subq %rcx, %rax + je L(exit) + sbbl %eax, %eax + orl $1, %eax + ret + + .p2align 4 +L(exit): + ret + + .p2align 4 +L(between_2_3): + /* Load as big endian to avoid branches. */ + movzwl (%rdi), %eax + movzwl (%rsi), %ecx + shll $8, %eax + shll $8, %ecx + bswap %eax + bswap %ecx + movb -1(%rdi, %rdx), %al + movb -1(%rsi, %rdx), %cl + /* Subtraction is okay because the upper 8 bits are zero. */ + subl %ecx, %eax + ret + + .p2align 4 +L(1): + movzbl (%rdi), %eax + movzbl (%rsi), %ecx + subl %ecx, %eax + ret +# endif + + .p2align 4 +L(zero): + xorl %eax, %eax + ret + + .p2align 4 +L(less_vec): +# ifdef USE_AS_WMEMCMP + /* It can only be 0, 4, 8, 12, 16, 20, 24, 28 bytes. */ + cmpb $4, %dl + je L(4) + jb L(zero) +# else + cmpb $1, %dl + je L(1) + jb L(zero) + cmpb $4, %dl + jb L(between_2_3) + cmpb $8, %dl + jb L(between_4_7) +# endif + cmpb $16, %dl + jae L(between_16_31) + /* It is between 8 and 15 bytes. */ + vmovq (%rdi), %XMM1 + vmovq (%rsi), %XMM2 + VPCMPEQ %XMM1, %XMM2, %k2 + kmovw %k2, %eax + subl $XMM_MASK, %eax + jnz L(first_vec) + /* Use overlapping loads to avoid branches. */ + leaq -8(%rdi, %rdx), %rdi + leaq -8(%rsi, %rdx), %rsi + vmovq (%rdi), %XMM1 + vmovq (%rsi), %XMM2 + VPCMPEQ %XMM1, %XMM2, %k2 + kmovw %k2, %eax + subl $XMM_MASK, %eax + jnz L(first_vec) + ret + + .p2align 4 +L(between_16_31): + /* From 16 to 31 bytes. No branch when size == 16. */ + VMOVU (%rsi), %XMM2 + VPCMPEQ (%rdi), %XMM2, %k2 + kmovw %k2, %eax + subl $XMM_MASK, %eax + jnz L(first_vec) + + /* Use overlapping loads to avoid branches. */ + leaq -16(%rdi, %rdx), %rdi + leaq -16(%rsi, %rdx), %rsi + VMOVU (%rsi), %XMM2 + VPCMPEQ (%rdi), %XMM2, %k2 + kmovw %k2, %eax + subl $XMM_MASK, %eax + jnz L(first_vec) + ret + + .p2align 4 +L(more_8x_vec): + /* More than 8 * VEC. Check the first VEC. */ + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + + /* Align the first memory area for aligned loads in the loop. + Compute how much the first memory area is misaligned. */ + movq %rdi, %rcx + andl $(VEC_SIZE - 1), %ecx + /* Get the negative of offset for alignment. */ + subq $VEC_SIZE, %rcx + /* Adjust the second memory area. */ + subq %rcx, %rsi + /* Adjust the first memory area which should be aligned now. */ + subq %rcx, %rdi + /* Adjust length. */ + addq %rcx, %rdx + +L(loop_4x_vec): + /* Compare 4 * VEC at a time forward. */ + VMOVU (%rsi), %YMM1 + VPCMPEQ (%rdi), %YMM1, %k1 + + VMOVU VEC_SIZE(%rsi), %YMM2 + VPCMPEQ VEC_SIZE(%rdi), %YMM2, %k2 + kandd %k2, %k1, %k5 + + VMOVU (VEC_SIZE * 2)(%rsi), %YMM3 + VPCMPEQ (VEC_SIZE * 2)(%rdi), %YMM3, %k3 + kandd %k3, %k5, %k5 + + VMOVU (VEC_SIZE * 3)(%rsi), %YMM4 + VPCMPEQ (VEC_SIZE * 3)(%rdi), %YMM4, %k4 + kandd %k4, %k5, %k5 + + kmovd %k5, %eax + cmpl $VEC_MASK, %eax + jne L(4x_vec_end) + + addq $(VEC_SIZE * 4), %rdi + addq $(VEC_SIZE * 4), %rsi + + subq $(VEC_SIZE * 4), %rdx + cmpq $(VEC_SIZE * 4), %rdx + jae L(loop_4x_vec) + + /* Less than 4 * VEC. */ + cmpq $VEC_SIZE, %rdx + jbe L(last_vec) + cmpq $(VEC_SIZE * 2), %rdx + jbe L(last_2x_vec) + +L(last_4x_vec): + /* From 2 * VEC to 4 * VEC. */ + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + + addq $VEC_SIZE, %rdi + addq $VEC_SIZE, %rsi + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + + /* Use overlapping loads to avoid branches. */ + leaq -(3 * VEC_SIZE)(%rdi, %rdx), %rdi + leaq -(3 * VEC_SIZE)(%rsi, %rdx), %rsi + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + + addq $VEC_SIZE, %rdi + addq $VEC_SIZE, %rsi + VMOVU (%rsi), %YMM2 + VPCMPEQ (%rdi), %YMM2, %k2 + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + ret + + .p2align 4 +L(4x_vec_end): + kmovd %k1, %eax + subl $VEC_MASK, %eax + jnz L(first_vec) + kmovd %k2, %eax + subl $VEC_MASK, %eax + jnz L(first_vec_x1) + kmovd %k3, %eax + subl $VEC_MASK, %eax + jnz L(first_vec_x2) + kmovd %k4, %eax + subl $VEC_MASK, %eax + tzcntl %eax, %ecx +# ifdef USE_AS_WMEMCMP + xorl %eax, %eax + movl (VEC_SIZE * 3)(%rdi, %rcx, 4), %edx + cmpl (VEC_SIZE * 3)(%rsi, %rcx, 4), %edx + jmp L(wmemcmp_return) +# else + movzbl (VEC_SIZE * 3)(%rdi, %rcx), %eax + movzbl (VEC_SIZE * 3)(%rsi, %rcx), %edx + sub %edx, %eax +# endif + ret + + .p2align 4 +L(first_vec_x1): + tzcntl %eax, %ecx +# ifdef USE_AS_WMEMCMP + xorl %eax, %eax + movl VEC_SIZE(%rdi, %rcx, 4), %edx + cmpl VEC_SIZE(%rsi, %rcx, 4), %edx + jmp L(wmemcmp_return) +# else + movzbl VEC_SIZE(%rdi, %rcx), %eax + movzbl VEC_SIZE(%rsi, %rcx), %edx + sub %edx, %eax +# endif + ret + + .p2align 4 +L(first_vec_x2): + tzcntl %eax, %ecx +# ifdef USE_AS_WMEMCMP + xorl %eax, %eax + movl (VEC_SIZE * 2)(%rdi, %rcx, 4), %edx + cmpl (VEC_SIZE * 2)(%rsi, %rcx, 4), %edx + jmp L(wmemcmp_return) +# else + movzbl (VEC_SIZE * 2)(%rdi, %rcx), %eax + movzbl (VEC_SIZE * 2)(%rsi, %rcx), %edx + sub %edx, %eax +# endif + ret +END (MEMCMP) +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/wmemcmp-evex-movbe.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wmemcmp-evex-movbe.S 2021-03-10 09:01:00.932639243 +0100 @@ -0,0 +1,4 @@ +#define MEMCMP __wmemcmp_evex_movbe +#define USE_AS_WMEMCMP 1 + +#include "memcmp-evex-movbe.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/memchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memchr-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef MEMCHR +# define MEMCHR __memchr_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "memchr-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/memchr-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memchr-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memchr-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -34,9 +34,13 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (MEMCHR) # ifndef USE_AS_RAWMEMCHR /* Check for zero length. */ @@ -107,8 +111,8 @@ L(cros_page_boundary): # endif addq %rdi, %rax addq %rcx, %rax - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(aligned_more): @@ -224,8 +228,7 @@ L(last_4x_vec_or_less): jnz L(first_vec_x3_check) xorl %eax, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_2x_vec): @@ -243,8 +246,7 @@ L(last_2x_vec): testl %eax, %eax jnz L(first_vec_x1_check) xorl %eax, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x0_check): @@ -253,8 +255,7 @@ L(first_vec_x0_check): cmpq %rax, %rdx jbe L(zero) addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1_check): @@ -264,8 +265,7 @@ L(first_vec_x1_check): jbe L(zero) addq $VEC_SIZE, %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2_check): @@ -275,8 +275,7 @@ L(first_vec_x2_check): jbe L(zero) addq $(VEC_SIZE * 2), %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x3_check): @@ -286,12 +285,14 @@ L(first_vec_x3_check): jbe L(zero) addq $(VEC_SIZE * 3), %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(zero): - VZEROUPPER + xorl %eax, %eax + jmp L(return_vzeroupper) + + .p2align 4 L(null): xorl %eax, %eax ret @@ -301,24 +302,21 @@ L(null): L(first_vec_x0): tzcntl %eax, %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1): tzcntl %eax, %eax addq $VEC_SIZE, %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2): tzcntl %eax, %eax addq $(VEC_SIZE * 2), %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(4x_vec_end): @@ -337,8 +335,7 @@ L(first_vec_x3): tzcntl %eax, %eax addq $(VEC_SIZE * 3), %rax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN END (MEMCHR) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memcmp-avx2-movbe-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memcmp-avx2-movbe-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef MEMCMP +# define MEMCMP __memcmp_avx2_movbe_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "memcmp-avx2-movbe.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S 2021-03-10 09:01:00.936639295 +0100 @@ -47,6 +47,10 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 # define VEC_MASK ((1 << VEC_SIZE) - 1) @@ -55,7 +59,7 @@ memcmp has to use UNSIGNED comparison for elemnts. */ - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (MEMCMP) # ifdef USE_AS_WMEMCMP shl $2, %RDX_LP @@ -123,8 +127,8 @@ ENTRY (MEMCMP) vptest %ymm0, %ymm5 jnc L(4x_vec_end) xorl %eax, %eax - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(last_2x_vec): @@ -144,8 +148,7 @@ L(last_vec): vpmovmskb %ymm2, %eax subl $VEC_MASK, %eax jnz L(first_vec) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec): @@ -164,8 +167,7 @@ L(wmemcmp_return): movzbl (%rsi, %rcx), %edx sub %edx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # ifdef USE_AS_WMEMCMP .p2align 4 @@ -367,8 +369,7 @@ L(last_4x_vec): vpmovmskb %ymm2, %eax subl $VEC_MASK, %eax jnz L(first_vec) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(4x_vec_end): @@ -394,8 +395,7 @@ L(4x_vec_end): movzbl (VEC_SIZE * 3)(%rsi, %rcx), %edx sub %edx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1): @@ -410,8 +410,7 @@ L(first_vec_x1): movzbl VEC_SIZE(%rsi, %rcx), %edx sub %edx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2): @@ -426,7 +425,6 @@ L(first_vec_x2): movzbl (VEC_SIZE * 2)(%rsi, %rcx), %edx sub %edx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN END (MEMCMP) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memmove-avx-unaligned-erms-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,17 @@ +#if IS_IN (libc) +# define VEC_SIZE 32 +# define VEC(i) ymm##i +# define VMOVNT vmovntdq +# define VMOVU vmovdqu +# define VMOVA vmovdqa + +# define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +# define VZEROUPPER_RETURN jmp L(return) + +# define SECTION(p) p##.avx.rtm +# define MEMMOVE_SYMBOL(p,s) p##_avx_##s##_rtm + +# include "memmove-vec-unaligned-erms.S" +#endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memrchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memrchr-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef MEMRCHR +# define MEMRCHR __memrchr_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "memrchr-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/memrchr-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memrchr-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memrchr-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -20,14 +20,22 @@ # include <sysdep.h> +# ifndef MEMRCHR +# define MEMRCHR __memrchr_avx2 +# endif + # ifndef VZEROUPPER # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits -ENTRY (__memrchr_avx2) + .section SECTION(.text),"ax",@progbits +ENTRY (MEMRCHR) /* Broadcast CHAR to YMM0. */ vmovd %esi, %xmm0 vpbroadcastb %xmm0, %ymm0 @@ -134,8 +142,8 @@ L(loop_4x_vec): vpmovmskb %ymm1, %eax bsrl %eax, %eax addq %rdi, %rax - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(last_4x_vec_or_less): @@ -169,8 +177,7 @@ L(last_4x_vec_or_less): addq %rax, %rdx jl L(zero) addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_2x_vec): @@ -191,31 +198,27 @@ L(last_2x_vec): jl L(zero) addl $(VEC_SIZE * 2), %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_x0): bsrl %eax, %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_x1): bsrl %eax, %eax addl $VEC_SIZE, %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_x2): bsrl %eax, %eax addl $(VEC_SIZE * 2), %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_x3): @@ -232,8 +235,7 @@ L(last_vec_x1_check): jl L(zero) addl $VEC_SIZE, %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_x3_check): @@ -243,12 +245,14 @@ L(last_vec_x3_check): jl L(zero) addl $(VEC_SIZE * 3), %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(zero): - VZEROUPPER + xorl %eax, %eax + VZEROUPPER_RETURN + + .p2align 4 L(null): xorl %eax, %eax ret @@ -273,8 +277,7 @@ L(last_vec_or_less_aligned): bsrl %eax, %eax addq %rdi, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_or_less): @@ -315,8 +318,7 @@ L(last_vec_or_less): bsrl %eax, %eax addq %rdi, %rax addq %r8, %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_vec_2x_aligned): @@ -353,7 +355,6 @@ L(last_vec_2x_aligned): bsrl %eax, %eax addq %rdi, %rax addq %r8, %rax - VZEROUPPER - ret -END (__memrchr_avx2) + VZEROUPPER_RETURN +END (MEMRCHR) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,10 @@ +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return) + +#define SECTION(p) p##.avx.rtm +#define MEMSET_SYMBOL(p,s) p##_avx2_##s##_rtm +#define WMEMSET_SYMBOL(p,s) p##_avx2_##s##_rtm + +#include "memset-avx2-unaligned-erms.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S 2021-03-10 09:01:00.936639295 +0100 @@ -14,9 +14,15 @@ movq r, %rax; \ vpbroadcastd %xmm0, %ymm0 -# define SECTION(p) p##.avx -# define MEMSET_SYMBOL(p,s) p##_avx2_##s -# define WMEMSET_SYMBOL(p,s) p##_avx2_##s +# ifndef SECTION +# define SECTION(p) p##.avx +# endif +# ifndef MEMSET_SYMBOL +# define MEMSET_SYMBOL(p,s) p##_avx2_##s +# endif +# ifndef WMEMSET_SYMBOL +# define WMEMSET_SYMBOL(p,s) p##_avx2_##s +# endif # include "memset-vec-unaligned-erms.S" #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/rawmemchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/rawmemchr-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,4 @@ +#define MEMCHR __rawmemchr_avx2_rtm +#define USE_AS_RAWMEMCHR 1 + +#include "memchr-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/stpcpy-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/stpcpy-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STPCPY +#define STRCPY __stpcpy_avx2_rtm +#include "strcpy-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/stpncpy-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/stpncpy-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,4 @@ +#define USE_AS_STPCPY +#define USE_AS_STRNCPY +#define STRCPY __stpncpy_avx2_rtm +#include "strcpy-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcat-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcat-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef STRCAT +# define STRCAT __strcat_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strcat-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcat-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strcat-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcat-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -30,7 +30,11 @@ /* Number of bytes in a vector register */ # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + + .section SECTION(.text),"ax",@progbits ENTRY (STRCAT) mov %rdi, %r9 # ifdef USE_AS_STRNCAT Index: glibc-2.31/sysdeps/x86_64/multiarch/strchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchr-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef STRCHR +# define STRCHR __strchr_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strchr-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strchr-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strchr-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchr-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -38,9 +38,13 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (STRCHR) movl %edi, %ecx /* Broadcast CHAR to YMM0. */ @@ -93,8 +97,8 @@ L(cros_page_boundary): cmp (%rax), %CHAR_REG cmovne %rdx, %rax # endif - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(aligned_more): @@ -190,8 +194,7 @@ L(first_vec_x0): cmp (%rax), %CHAR_REG cmovne %rdx, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1): @@ -205,8 +208,7 @@ L(first_vec_x1): cmp (%rax), %CHAR_REG cmovne %rdx, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2): @@ -220,8 +222,7 @@ L(first_vec_x2): cmp (%rax), %CHAR_REG cmovne %rdx, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(4x_vec_end): @@ -247,8 +248,7 @@ L(first_vec_x3): cmp (%rax), %CHAR_REG cmovne %rdx, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN END (STRCHR) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strchrnul-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strchrnul-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,3 @@ +#define STRCHR __strchrnul_avx2_rtm +#define USE_AS_STRCHRNUL 1 +#include "strchr-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcmp-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcmp-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef STRCMP +# define STRCMP __strcmp_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strcmp-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcmp-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strcmp-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcmp-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -55,6 +55,10 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + /* Warning! wcscmp/wcsncmp have to use SIGNED comparison for elements. strcmp/strncmp have to use UNSIGNED comparison for elements. @@ -75,7 +79,7 @@ the maximum offset is reached before a difference is found, zero is returned. */ - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (STRCMP) # ifdef USE_AS_STRNCMP /* Check for simple cases (0 or 1) in offset. */ @@ -127,8 +131,8 @@ L(return): movzbl (%rsi, %rdx), %edx subl %edx, %eax # endif - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(return_vec_size): @@ -161,8 +165,7 @@ L(return_vec_size): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(return_2_vec_size): @@ -195,8 +198,7 @@ L(return_2_vec_size): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(return_3_vec_size): @@ -229,8 +231,7 @@ L(return_3_vec_size): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(next_3_vectors): @@ -356,8 +357,7 @@ L(back_to_loop): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(test_vec): @@ -400,8 +400,7 @@ L(test_vec): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(test_2_vec): @@ -444,8 +443,7 @@ L(test_2_vec): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(test_3_vec): @@ -486,8 +484,7 @@ L(test_3_vec): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(loop_cross_page): @@ -556,8 +553,7 @@ L(loop_cross_page): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(loop_cross_page_2_vec): @@ -624,8 +620,7 @@ L(loop_cross_page_2_vec): subl %edx, %eax # endif # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(cross_page_loop): @@ -659,8 +654,7 @@ L(cross_page_loop): # ifndef USE_AS_WCSCMP L(different): # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # ifdef USE_AS_WCSCMP .p2align 4 @@ -670,16 +664,14 @@ L(different): setl %al negl %eax orl $1, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN # endif # ifdef USE_AS_STRNCMP .p2align 4 L(zero): xorl %eax, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(char0): @@ -693,8 +685,7 @@ L(char0): movzbl (%rdi), %eax subl %ecx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # endif .p2align 4 @@ -719,8 +710,7 @@ L(last_vector): movzbl (%rsi, %rdx), %edx subl %edx, %eax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN /* Comparing on page boundary region requires special treatment: It must done one vector at the time, starting with the wider @@ -841,7 +831,6 @@ L(cross_page_4bytes): testl %eax, %eax jne L(cross_page_loop) subl %ecx, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN END (STRCMP) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strcpy-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcpy-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef STRCPY +# define STRCPY __strcpy_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strcpy-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strcpy-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strcpy-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strcpy-avx2.S 2021-03-10 09:01:00.936639295 +0100 @@ -37,6 +37,10 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + /* zero register */ #define xmmZ xmm0 #define ymmZ ymm0 @@ -46,7 +50,7 @@ # ifndef USE_AS_STRCAT - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (STRCPY) # ifdef USE_AS_STRNCPY mov %RDX_LP, %R8_LP @@ -369,8 +373,8 @@ L(CopyVecSizeExit): lea 1(%rdi), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(CopyTwoVecSize1): @@ -553,8 +557,7 @@ L(Exit1): lea 2(%rdi), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit2): @@ -569,8 +572,7 @@ L(Exit2): lea 3(%rdi), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit3): @@ -584,8 +586,7 @@ L(Exit3): lea 4(%rdi), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit4_7): @@ -602,8 +603,7 @@ L(Exit4_7): lea 1(%rdi, %rdx), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit8_15): @@ -620,8 +620,7 @@ L(Exit8_15): lea 1(%rdi, %rdx), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit16_31): @@ -638,8 +637,7 @@ L(Exit16_31): lea 1(%rdi, %rdx), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Exit32_63): @@ -656,8 +654,7 @@ L(Exit32_63): lea 1(%rdi, %rdx), %rdi jnz L(StrncpyFillTailWithZero) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # ifdef USE_AS_STRNCPY @@ -671,8 +668,7 @@ L(StrncpyExit1): # ifdef USE_AS_STRCAT movb $0, 1(%rdi) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit2): @@ -684,8 +680,7 @@ L(StrncpyExit2): # ifdef USE_AS_STRCAT movb $0, 2(%rdi) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit3_4): @@ -699,8 +694,7 @@ L(StrncpyExit3_4): # ifdef USE_AS_STRCAT movb $0, (%rdi, %r8) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit5_8): @@ -714,8 +708,7 @@ L(StrncpyExit5_8): # ifdef USE_AS_STRCAT movb $0, (%rdi, %r8) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit9_16): @@ -729,8 +722,7 @@ L(StrncpyExit9_16): # ifdef USE_AS_STRCAT movb $0, (%rdi, %r8) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit17_32): @@ -744,8 +736,7 @@ L(StrncpyExit17_32): # ifdef USE_AS_STRCAT movb $0, (%rdi, %r8) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit33_64): @@ -760,8 +751,7 @@ L(StrncpyExit33_64): # ifdef USE_AS_STRCAT movb $0, (%rdi, %r8) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(StrncpyExit65): @@ -778,50 +768,43 @@ L(StrncpyExit65): # ifdef USE_AS_STRCAT movb $0, 65(%rdi) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # ifndef USE_AS_STRCAT .p2align 4 L(Fill1): mov %dl, (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Fill2): mov %dx, (%rdi) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Fill3_4): mov %dx, (%rdi) mov %dx, -2(%rdi, %r8) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Fill5_8): mov %edx, (%rdi) mov %edx, -4(%rdi, %r8) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Fill9_16): mov %rdx, (%rdi) mov %rdx, -8(%rdi, %r8) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(Fill17_32): vmovdqu %xmmZ, (%rdi) vmovdqu %xmmZ, -16(%rdi, %r8) - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(CopyVecSizeUnalignedVec2): @@ -898,8 +881,7 @@ L(Fill): cmp $1, %r8d ja L(Fill2) je L(Fill1) - VZEROUPPER - ret + VZEROUPPER_RETURN /* end of ifndef USE_AS_STRCAT */ # endif @@ -929,8 +911,7 @@ L(UnalignedFourVecSizeLeaveCase3): # ifdef USE_AS_STRCAT movb $0, (VEC_SIZE * 4)(%rdi) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(UnalignedFourVecSizeLeaveCase2): @@ -1001,16 +982,14 @@ L(StrncpyExit): # ifdef USE_AS_STRCAT movb $0, (%rdi) # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(ExitZero): # ifndef USE_AS_STRCAT mov %rdi, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN # endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strlen-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strlen-avx2-rtm.S 2021-03-10 09:01:00.936639295 +0100 @@ -0,0 +1,12 @@ +#ifndef STRLEN +# define STRLEN __strlen_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strlen-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strlen-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strlen-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strlen-avx2.S 2021-03-10 09:01:00.940639347 +0100 @@ -36,9 +36,13 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (STRLEN) # ifdef USE_AS_STRNLEN /* Check for zero length. */ @@ -111,8 +115,8 @@ L(cros_page_boundary): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(aligned_more): @@ -231,8 +235,7 @@ L(last_4x_vec_or_less): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(last_2x_vec): @@ -253,8 +256,7 @@ L(last_2x_vec): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x0_check): @@ -267,8 +269,7 @@ L(first_vec_x0_check): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1_check): @@ -282,8 +283,7 @@ L(first_vec_x1_check): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2_check): @@ -297,8 +297,7 @@ L(first_vec_x2_check): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x3_check): @@ -312,8 +311,7 @@ L(first_vec_x3_check): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(max): @@ -321,8 +319,7 @@ L(max): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(zero): @@ -338,8 +335,7 @@ L(first_vec_x0): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x1): @@ -350,8 +346,7 @@ L(first_vec_x1): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(first_vec_x2): @@ -362,8 +357,7 @@ L(first_vec_x2): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(4x_vec_end): @@ -389,8 +383,7 @@ L(first_vec_x3): # ifdef USE_AS_WCSLEN shrq $2, %rax # endif - VZEROUPPER - ret + VZEROUPPER_RETURN END (STRLEN) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/strncat-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncat-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STRNCAT +#define STRCAT __strncat_avx2_rtm +#include "strcat-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strncmp-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncmp-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,3 @@ +#define STRCMP __strncmp_avx2_rtm +#define USE_AS_STRNCMP 1 +#include "strcmp-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strncpy-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strncpy-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,3 @@ +#define USE_AS_STRNCPY +#define STRCPY __strncpy_avx2_rtm +#include "strcpy-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strnlen-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strnlen-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,4 @@ +#define STRLEN __strnlen_avx2_rtm +#define USE_AS_STRNLEN 1 + +#include "strlen-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strrchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/strrchr-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,12 @@ +#ifndef STRRCHR +# define STRRCHR __strrchr_avx2_rtm +#endif + +#define ZERO_UPPER_VEC_REGISTERS_RETURN \ + ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST + +#define VZEROUPPER_RETURN jmp L(return_vzeroupper) + +#define SECTION(p) p##.avx.rtm + +#include "strrchr-avx2.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/strrchr-avx2.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/strrchr-avx2.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/strrchr-avx2.S 2021-03-10 09:01:00.940639347 +0100 @@ -36,9 +36,13 @@ # define VZEROUPPER vzeroupper # endif +# ifndef SECTION +# define SECTION(p) p##.avx +# endif + # define VEC_SIZE 32 - .section .text.avx,"ax",@progbits + .section SECTION(.text),"ax",@progbits ENTRY (STRRCHR) movd %esi, %xmm4 movl %edi, %ecx @@ -166,8 +170,8 @@ L(return_value): # endif bsrl %eax, %eax leaq -VEC_SIZE(%rdi, %rax), %rax - VZEROUPPER - ret +L(return_vzeroupper): + ZERO_UPPER_VEC_REGISTERS_RETURN .p2align 4 L(match): @@ -198,8 +202,7 @@ L(find_nul): jz L(return_value) bsrl %eax, %eax leaq -VEC_SIZE(%rdi, %rax), %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(char_and_nul): @@ -222,14 +225,12 @@ L(char_and_nul_in_first_vec): jz L(return_null) bsrl %eax, %eax leaq -VEC_SIZE(%rdi, %rax), %rax - VZEROUPPER - ret + VZEROUPPER_RETURN .p2align 4 L(return_null): xorl %eax, %eax - VZEROUPPER - ret + VZEROUPPER_RETURN END (STRRCHR) #endif Index: glibc-2.31/sysdeps/x86_64/multiarch/wcschr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcschr-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,3 @@ +#define STRCHR __wcschr_avx2_rtm +#define USE_AS_WCSCHR 1 +#include "strchr-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcscmp-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcscmp-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,4 @@ +#define STRCMP __wcscmp_avx2_rtm +#define USE_AS_WCSCMP 1 + +#include "strcmp-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcslen-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcslen-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,4 @@ +#define STRLEN __wcslen_avx2_rtm +#define USE_AS_WCSLEN 1 + +#include "strlen-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsncmp-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsncmp-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,5 @@ +#define STRCMP __wcsncmp_avx2_rtm +#define USE_AS_STRNCMP 1 +#define USE_AS_WCSCMP 1 + +#include "strcmp-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsnlen-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,5 @@ +#define STRLEN __wcsnlen_avx2_rtm +#define USE_AS_WCSLEN 1 +#define USE_AS_STRNLEN 1 + +#include "strlen-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wcsrchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wcsrchr-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,3 @@ +#define STRRCHR __wcsrchr_avx2_rtm +#define USE_AS_WCSRCHR 1 +#include "strrchr-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wmemchr-avx2-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wmemchr-avx2-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,4 @@ +#define MEMCHR __wmemchr_avx2_rtm +#define USE_AS_WMEMCHR 1 + +#include "memchr-avx2-rtm.S" Index: glibc-2.31/sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe-rtm.S =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86_64/multiarch/wmemcmp-avx2-movbe-rtm.S 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,4 @@ +#define MEMCMP __wmemcmp_avx2_movbe_rtm +#define USE_AS_WMEMCMP 1 + +#include "memcmp-avx2-movbe-rtm.S" Index: glibc-2.31/sysdeps/x86_64/sysdep.h =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/sysdep.h 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/sysdep.h 2021-03-10 09:01:00.940639347 +0100 @@ -95,6 +95,28 @@ lose: \ #define R14_LP r14 #define R15_LP r15 +/* Zero upper vector registers and return with xtest. NB: Use VZEROALL + to avoid RTM abort triggered by VZEROUPPER inside transactionally. */ +#define ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST \ + xtest; \ + jz 1f; \ + vzeroall; \ + ret; \ +1: \ + vzeroupper; \ + ret + +/* Zero upper vector registers and return. */ +#ifndef ZERO_UPPER_VEC_REGISTERS_RETURN +# define ZERO_UPPER_VEC_REGISTERS_RETURN \ + VZEROUPPER; \ + ret +#endif + +#ifndef VZEROUPPER_RETURN +# define VZEROUPPER_RETURN VZEROUPPER; ret +#endif + #else /* __ASSEMBLER__ */ /* Long and pointer size in bytes. */ Index: glibc-2.31/sysdeps/x86/Makefile =================================================================== --- glibc-2.31.orig/sysdeps/x86/Makefile 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86/Makefile 2021-03-10 09:01:00.940639347 +0100 @@ -14,6 +14,33 @@ gen-as-const-headers += jmp_buf-ssp.sym sysdep_routines += __longjmp_cancel endif +ifeq ($(subdir),string) +sysdep_routines += cacheinfo + +tests += \ + tst-memchr-rtm \ + tst-memcmp-rtm \ + tst-memmove-rtm \ + tst-memrchr-rtm \ + tst-memset-rtm \ + tst-strchr-rtm \ + tst-strcpy-rtm \ + tst-strlen-rtm \ + tst-strncmp-rtm \ + tst-strrchr-rtm + +CFLAGS-tst-memchr-rtm.c += -mrtm +CFLAGS-tst-memcmp-rtm.c += -mrtm +CFLAGS-tst-memmove-rtm.c += -mrtm +CFLAGS-tst-memrchr-rtm.c += -mrtm +CFLAGS-tst-memset-rtm.c += -mrtm +CFLAGS-tst-strchr-rtm.c += -mrtm +CFLAGS-tst-strcpy-rtm.c += -mrtm +CFLAGS-tst-strlen-rtm.c += -mrtm +CFLAGS-tst-strncmp-rtm.c += -mrtm +CFLAGS-tst-strrchr-rtm.c += -mrtm +endif + ifeq ($(enable-cet),yes) ifeq ($(subdir),elf) sysdep-dl-routines += dl-cet Index: glibc-2.31/sysdeps/x86/tst-memchr-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-memchr-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,54 @@ +/* Test case for memchr inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE); + string1[100] = 'c'; + string1[STRING_SIZE - 100] = 'c'; + char *p = memchr (string1, 'c', STRING_SIZE); + if (p == &string1[100]) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + char *p = memchr (string1, 'c', STRING_SIZE); + if (p == &string1[100]) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("memchr", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-memcmp-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-memcmp-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,52 @@ +/* Test case for memcmp inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; +char string2[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE); + memset (string2, 'a', STRING_SIZE); + if (memcmp (string1, string2, STRING_SIZE) == 0) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + if (memcmp (string1, string2, STRING_SIZE) == 0) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("memcmp", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-memmove-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-memmove-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,53 @@ +/* Test case for memmove inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; +char string2[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE); + if (memmove (string2, string1, STRING_SIZE) == string2 + && memcmp (string2, string1, STRING_SIZE) == 0) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + if (memmove (string2, string1, STRING_SIZE) == string2 + && memcmp (string2, string1, STRING_SIZE) == 0) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("memmove", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-memrchr-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-memrchr-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,54 @@ +/* Test case for memrchr inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE); + string1[100] = 'c'; + string1[STRING_SIZE - 100] = 'c'; + char *p = memrchr (string1, 'c', STRING_SIZE); + if (p == &string1[STRING_SIZE - 100]) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + char *p = memrchr (string1, 'c', STRING_SIZE); + if (p == &string1[STRING_SIZE - 100]) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("memrchr", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-memset-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-memset-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,45 @@ +/* Test case for memset inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE); + return EXIT_SUCCESS; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + memset (string1, 'a', STRING_SIZE); + return 0; +} + +static int +do_test (void) +{ + return do_test_1 ("memset", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-strchr-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-strchr-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,54 @@ +/* Test case for strchr inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE - 1); + string1[100] = 'c'; + string1[STRING_SIZE - 100] = 'c'; + char *p = strchr (string1, 'c'); + if (p == &string1[100]) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + char *p = strchr (string1, 'c'); + if (p == &string1[100]) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("strchr", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-strcpy-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-strcpy-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,53 @@ +/* Test case for strcpy inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; +char string2[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE - 1); + if (strcpy (string2, string1) == string2 + && strcmp (string2, string1) == 0) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + if (strcpy (string2, string1) == string2 + && strcmp (string2, string1) == 0) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("strcpy", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-string-rtm.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-string-rtm.h 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,72 @@ +/* Test string function in a transactionally executing RTM region. + Copyright (C) 2021 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 <string.h> +#include <x86intrin.h> +#include <cpu-features.h> +#include <support/check.h> +#include <support/test-driver.h> + +static int +do_test_1 (const char *name, unsigned int loop, int (*prepare) (void), + int (*function) (void)) +{ + if (!CPU_FEATURE_USABLE (RTM)) + return EXIT_UNSUPPORTED; + + int status = prepare (); + if (status != EXIT_SUCCESS) + return status; + + unsigned int i; + unsigned int naborts = 0; + unsigned int failed = 0; + for (i = 0; i < loop; i++) + { + failed |= function (); + if (_xbegin() == _XBEGIN_STARTED) + { + failed |= function (); + _xend(); + } + else + { + failed |= function (); + ++naborts; + } + } + + if (failed) + FAIL_EXIT1 ("%s() failed", name); + + if (naborts) + { + /* NB: Low single digit (<= 5%) noise-level aborts are normal for + TSX. */ + double rate = 100 * ((double) naborts) / ((double) loop); + if (rate > 5) + FAIL_EXIT1 ("TSX abort rate: %.2f%% (%d out of %d)", + rate, naborts, loop); + } + + return EXIT_SUCCESS; +} + +static int do_test (void); + +#include <support/test-driver.c> Index: glibc-2.31/sysdeps/x86/tst-strlen-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-strlen-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,53 @@ +/* Test case for strlen inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE - 1); + string1[STRING_SIZE - 100] = '\0'; + size_t len = strlen (string1); + if (len == STRING_SIZE - 100) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + size_t len = strlen (string1); + if (len == STRING_SIZE - 100) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("strlen", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-strncmp-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-strncmp-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,52 @@ +/* Test case for strncmp inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; +char string2[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE - 1); + memset (string2, 'a', STRING_SIZE - 1); + if (strncmp (string1, string2, STRING_SIZE) == 0) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + if (strncmp (string1, string2, STRING_SIZE) == 0) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("strncmp", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86/tst-strrchr-rtm.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ glibc-2.31/sysdeps/x86/tst-strrchr-rtm.c 2021-03-10 09:01:00.940639347 +0100 @@ -0,0 +1,53 @@ +/* Test case for strrchr inside a transactionally executing RTM region. + Copyright (C) 2021 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 <tst-string-rtm.h> + +#define LOOP 3000 +#define STRING_SIZE 1024 +char string1[STRING_SIZE]; + +__attribute__ ((noinline, noclone)) +static int +prepare (void) +{ + memset (string1, 'a', STRING_SIZE - 1); + string1[STRING_SIZE - 100] = 'c'; + char *p = strrchr (string1, 'c'); + if (p == &string1[STRING_SIZE - 100]) + return EXIT_SUCCESS; + else + return EXIT_FAILURE; +} + +__attribute__ ((noinline, noclone)) +static int +function (void) +{ + char *p = strrchr (string1, 'c'); + if (p == &string1[STRING_SIZE - 100]) + return 0; + else + return 1; +} + +static int +do_test (void) +{ + return do_test_1 ("strrchr", LOOP, prepare, function); +} Index: glibc-2.31/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S 2021-03-10 09:01:00.948639453 +0100 @@ -1,22 +1,22 @@ #if IS_IN (libc) # define VEC_SIZE 64 -# define VEC(i) zmm##i +# define XMM0 xmm16 +# define YMM0 ymm16 +# define VEC0 zmm16 +# define VEC(i) VEC##i # define VMOVU vmovdqu64 # define VMOVA vmovdqa64 +# define VZEROUPPER # define MEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ - vmovd d, %xmm0; \ movq r, %rax; \ - vpbroadcastb %xmm0, %xmm0; \ - vpbroadcastq %xmm0, %zmm0 + vpbroadcastb d, %VEC0 # define WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN(d, r) \ - vmovd d, %xmm0; \ movq r, %rax; \ - vpbroadcastd %xmm0, %xmm0; \ - vpbroadcastq %xmm0, %zmm0 + vpbroadcastd d, %VEC0 -# define SECTION(p) p##.avx512 +# define SECTION(p) p##.evex512 # define MEMSET_SYMBOL(p,s) p##_avx512_##s # define WMEMSET_SYMBOL(p,s) p##_avx512_##s Index: glibc-2.31/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S =================================================================== --- glibc-2.31.orig/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S 2020-02-01 12:52:50.000000000 +0100 +++ glibc-2.31/sysdeps/x86_64/multiarch/memmove-avx512-unaligned-erms.S 2021-03-10 09:01:00.948639453 +0100 @@ -1,11 +1,25 @@ #if IS_IN (libc) # define VEC_SIZE 64 -# define VEC(i) zmm##i +# define XMM0 xmm16 +# define XMM1 xmm17 +# define YMM0 ymm16 +# define YMM1 ymm17 +# define VEC0 zmm16 +# define VEC1 zmm17 +# define VEC2 zmm18 +# define VEC3 zmm19 +# define VEC4 zmm20 +# define VEC5 zmm21 +# define VEC6 zmm22 +# define VEC7 zmm23 +# define VEC8 zmm24 +# define VEC(i) VEC##i # define VMOVNT vmovntdq # define VMOVU vmovdqu64 # define VMOVA vmovdqa64 +# define VZEROUPPER -# define SECTION(p) p##.avx512 +# define SECTION(p) p##.evex512 # define MEMMOVE_SYMBOL(p,s) p##_avx512_##s # include "memmove-vec-unaligned-erms.S" diff --git a/sysdeps/x86_64/multiarch/strcpy-evex.S b/sysdeps/x86_64/multiarch/strcpy-evex.S index e019cfbeac..a343a1a692 100644 --- a/sysdeps/x86_64/multiarch/strcpy-evex.S +++ b/sysdeps/x86_64/multiarch/strcpy-evex.S @@ -35,8 +35,10 @@ # define VEC_SIZE 32 # endif +# define XMM2 xmm18 # define XMM3 xmm19 +# define YMM2 ymm18 # define YMM3 ymm19 # define YMM4 ymm20 # define YMM5 ymm21 @@ -48,12 +50,7 @@ /* zero register */ # define XMMZERO xmm16 # define YMMZERO ymm16 - -# define XMM1 xmm17 -# define XMM2 xmm18 - # define YMM1 ymm17 -# define YMM2 ymm18 .section .text.evex,"ax",@progbits ENTRY (STRCPY) @@ -67,9 +64,8 @@ ENTRY (STRCPY) mov %rdi, %rax /* save result */ # endif -# endif - vpxorq %XMMZERO, %XMMZERO, %XMMZERO +# endif and $((VEC_SIZE * 4) - 1), %ecx cmp $(VEC_SIZE * 2), %ecx
Locations
Projects
Search
Status Monitor
Help
OpenBuildService.org
Documentation
API Documentation
Code of Conduct
Contact
Support
@OBShq
Terms
openSUSE Build Service is sponsored by
The Open Build Service is an
openSUSE project
.
Sign Up
Log In
Places
Places
All Projects
Status Monitor
