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glibc.7879
avx512-knl-memcpy.patch
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File avx512-knl-memcpy.patch of Package glibc.7879
2015-12-15 H.J. Lu <hongjiu.lu@intel.com> * sysdeps/x86/cpu-features.c (init_cpu_features): Enable Silvermont optimizations for Knights Landing. 2015-12-19 Andrew Senkevich <andrew.senkevich@intel.com> * sysdeps/x86/cpu-features.h (bit_Prefer_No_VZEROUPPER, index_Prefer_No_VZEROUPPER): New feature. * sysdeps/x86/cpu-features.c (init_cpu_features): Set the Prefer_No_VZEROUPPER for Knights Landing. 2016-01-16 Andrew Senkevich <andrew.senkevich@intel.com> * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Added new files. * sysdeps/x86_64/multiarch/ifunc-impl-list.c: Added new tests. * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: New file. * sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memcpy.S: Added new IFUNC branch. * sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise. * sysdeps/x86_64/multiarch/memmove.c: Likewise. * sysdeps/x86_64/multiarch/memmove_chk.c: Likewise. * sysdeps/x86_64/multiarch/mempcpy.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise. 2016-01-16 Andrew Senkevich <andrew.senkevich@intel.com> * sysdeps/x86_64/multiarch/memcpy_chk.S: Fixed typos. Index: glibc-2.22/sysdeps/x86_64/multiarch/Makefile =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/Makefile +++ glibc-2.22/sysdeps/x86_64/multiarch/Makefile @@ -8,11 +8,12 @@ ifeq ($(subdir),string) sysdep_routines += strncat-c stpncpy-c strncpy-c strcmp-ssse3 \ strcmp-sse2-unaligned strncmp-ssse3 \ - memcmp-sse4 memcpy-ssse3 \ - memcpy-sse2-unaligned mempcpy-ssse3 \ - memmove-ssse3 memcpy-ssse3-back mempcpy-ssse3-back \ - memmove-avx-unaligned memcpy-avx-unaligned mempcpy-avx-unaligned \ - memmove-ssse3-back strcasecmp_l-ssse3 \ + memcmp-sse4 memcpy-ssse3 memcpy-sse2-unaligned \ + memcpy-avx512-no-vzeroupper mempcpy-ssse3 memmove-ssse3 \ + memcpy-ssse3-back mempcpy-ssse3-back memmove-avx-unaligned \ + memcpy-avx-unaligned mempcpy-avx-unaligned \ + mempcpy-avx512-no-vzeroupper memmove-ssse3-back \ + memmove-avx512-no-vzeroupper strcasecmp_l-ssse3 \ strncase_l-ssse3 strcat-ssse3 strncat-ssse3\ strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3 \ strcpy-sse2-unaligned strncpy-sse2-unaligned \ Index: glibc-2.22/sysdeps/x86_64/multiarch/ifunc-impl-list.c =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/ifunc-impl-list.c +++ glibc-2.22/sysdeps/x86_64/multiarch/ifunc-impl-list.c @@ -23,7 +23,7 @@ #include "init-arch.h" /* Maximum number of IFUNC implementations. */ -#define MAX_IFUNC 4 +#define MAX_IFUNC 5 /* Fill ARRAY of MAX elements with IFUNC implementations for function NAME supported on target machine and return the number of valid @@ -46,6 +46,8 @@ __libc_ifunc_impl_list (const char *name /* Support sysdeps/x86_64/multiarch/memmove_chk.S. */ IFUNC_IMPL (i, name, __memmove_chk, + IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_AVX512F, + __memmove_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_AVX, __memmove_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __memmove_chk, HAS_SSSE3, @@ -59,6 +61,8 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL (i, name, memmove, IFUNC_IMPL_ADD (array, i, memmove, HAS_AVX, __memmove_avx_unaligned) + IFUNC_IMPL_ADD (array, i, memmove, HAS_AVX512F, + __memmove_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memmove, HAS_SSSE3, __memmove_ssse3_back) IFUNC_IMPL_ADD (array, i, memmove, HAS_SSSE3, @@ -218,6 +222,8 @@ __libc_ifunc_impl_list (const char *name #ifdef SHARED /* Support sysdeps/x86_64/multiarch/memcpy_chk.S. */ IFUNC_IMPL (i, name, __memcpy_chk, + IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_AVX512F, + __memcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_AVX, __memcpy_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __memcpy_chk, HAS_SSSE3, @@ -234,11 +240,15 @@ __libc_ifunc_impl_list (const char *name IFUNC_IMPL_ADD (array, i, memcpy, HAS_SSSE3, __memcpy_ssse3_back) IFUNC_IMPL_ADD (array, i, memcpy, HAS_SSSE3, __memcpy_ssse3) + IFUNC_IMPL_ADD (array, i, memcpy, HAS_AVX512F, + __memcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2_unaligned) IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_sse2)) /* Support sysdeps/x86_64/multiarch/mempcpy_chk.S. */ IFUNC_IMPL (i, name, __mempcpy_chk, + IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_AVX512F, + __mempcpy_chk_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_AVX, __mempcpy_chk_avx_unaligned) IFUNC_IMPL_ADD (array, i, __mempcpy_chk, HAS_SSSE3, @@ -250,6 +260,8 @@ __libc_ifunc_impl_list (const char *name /* Support sysdeps/x86_64/multiarch/mempcpy.S. */ IFUNC_IMPL (i, name, mempcpy, + IFUNC_IMPL_ADD (array, i, mempcpy, HAS_AVX512F, + __mempcpy_avx512_no_vzeroupper) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_AVX, __mempcpy_avx_unaligned) IFUNC_IMPL_ADD (array, i, mempcpy, HAS_SSSE3, Index: glibc-2.22/sysdeps/x86_64/multiarch/init-arch.c =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/init-arch.c +++ glibc-2.22/sysdeps/x86_64/multiarch/init-arch.c @@ -78,6 +78,11 @@ __init_cpu_features (void) __cpu_features.feature[index_Slow_BSF] |= bit_Slow_BSF; break; + case 0x57: + /* Knights Landing. Enable Silvermont optimizations. */ + __cpu_features.feature[index_Prefer_No_VZEROUPPER] + |= bit_Prefer_No_VZEROUPPER; + case 0x37: case 0x4a: case 0x4d: Index: glibc-2.22/sysdeps/x86_64/multiarch/init-arch.h =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/init-arch.h +++ glibc-2.22/sysdeps/x86_64/multiarch/init-arch.h @@ -28,6 +28,7 @@ #define bit_AVX_Fast_Unaligned_Load (1 << 11) #define bit_AVX512F_Usable (1 << 12) #define bit_AVX512DQ_Usable (1 << 13) +#define bit_Prefer_No_VZEROUPPER (1 << 17) /* CPUID Feature flags. */ @@ -85,6 +86,7 @@ # define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE # define index_AVX512F_Usable FEATURE_INDEX_1*FEATURE_SIZE # define index_AVX512DQ_Usable FEATURE_INDEX_1*FEATURE_SIZE +# define index_Prefer_No_VZEROUPPER FEATURE_INDEX_1*FEATURE_SIZE #else /* __ASSEMBLER__ */ @@ -187,6 +189,7 @@ extern const struct cpu_features *__get_ # define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1 # define index_AVX512F_Usable FEATURE_INDEX_1 # define index_AVX512DQ_Usable FEATURE_INDEX_1 +# define index_Prefer_No_VZEROUPPER FEATURE_INDEX_1 # define HAS_ARCH_FEATURE(name) \ ((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0) Index: glibc-2.22/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S @@ -0,0 +1,408 @@ +/* memcpy optimized with AVX512 for KNL hardware. + Copyright (C) 2016 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 + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#if defined HAVE_AVX512_ASM_SUPPORT && IS_IN (libc) \ + && (defined SHARED \ + || defined USE_AS_MEMMOVE \ + || !defined USE_MULTIARCH) + +#include "asm-syntax.h" +#ifndef MEMCPY +# define MEMCPY __memcpy_avx512_no_vzeroupper +# define MEMCPY_CHK __memcpy_chk_avx512_no_vzeroupper +#endif + + .section .text,"ax",@progbits +#if !defined USE_AS_BCOPY +ENTRY (MEMCPY_CHK) + cmpq %rdx, %rcx + jb HIDDEN_JUMPTARGET (__chk_fail) +END (MEMCPY_CHK) +#endif + +ENTRY (MEMCPY) + mov %rdi, %rax +#ifdef USE_AS_MEMPCPY + add %rdx, %rax +#endif + lea (%rsi, %rdx), %rcx + lea (%rdi, %rdx), %r9 + cmp $512, %rdx + ja L(512bytesormore) + +L(check): + cmp $16, %rdx + jbe L(less_16bytes) + cmp $256, %rdx + jb L(less_256bytes) + vmovups (%rsi), %zmm0 + vmovups 0x40(%rsi), %zmm1 + vmovups 0x80(%rsi), %zmm2 + vmovups 0xC0(%rsi), %zmm3 + vmovups -0x100(%rcx), %zmm4 + vmovups -0xC0(%rcx), %zmm5 + vmovups -0x80(%rcx), %zmm6 + vmovups -0x40(%rcx), %zmm7 + vmovups %zmm0, (%rdi) + vmovups %zmm1, 0x40(%rdi) + vmovups %zmm2, 0x80(%rdi) + vmovups %zmm3, 0xC0(%rdi) + vmovups %zmm4, -0x100(%r9) + vmovups %zmm5, -0xC0(%r9) + vmovups %zmm6, -0x80(%r9) + vmovups %zmm7, -0x40(%r9) + ret + +L(less_256bytes): + cmp $128, %dl + jb L(less_128bytes) + vmovups (%rsi), %zmm0 + vmovups 0x40(%rsi), %zmm1 + vmovups -0x80(%rcx), %zmm2 + vmovups -0x40(%rcx), %zmm3 + vmovups %zmm0, (%rdi) + vmovups %zmm1, 0x40(%rdi) + vmovups %zmm2, -0x80(%r9) + vmovups %zmm3, -0x40(%r9) + ret + +L(less_128bytes): + cmp $64, %dl + jb L(less_64bytes) + vmovdqu (%rsi), %ymm0 + vmovdqu 0x20(%rsi), %ymm1 + vmovdqu -0x40(%rcx), %ymm2 + vmovdqu -0x20(%rcx), %ymm3 + vmovdqu %ymm0, (%rdi) + vmovdqu %ymm1, 0x20(%rdi) + vmovdqu %ymm2, -0x40(%r9) + vmovdqu %ymm3, -0x20(%r9) + ret + +L(less_64bytes): + cmp $32, %dl + jb L(less_32bytes) + vmovdqu (%rsi), %ymm0 + vmovdqu -0x20(%rcx), %ymm1 + vmovdqu %ymm0, (%rdi) + vmovdqu %ymm1, -0x20(%r9) + ret + +L(less_32bytes): + vmovdqu (%rsi), %xmm0 + vmovdqu -0x10(%rcx), %xmm1 + vmovdqu %xmm0, (%rdi) + vmovdqu %xmm1, -0x10(%r9) + ret + +L(less_16bytes): + cmp $8, %dl + jb L(less_8bytes) + movq (%rsi), %rsi + movq -0x8(%rcx), %rcx + movq %rsi, (%rdi) + movq %rcx, -0x8(%r9) + ret + +L(less_8bytes): + cmp $4, %dl + jb L(less_4bytes) + mov (%rsi), %esi + mov -0x4(%rcx), %ecx + mov %esi, (%rdi) + mov %ecx, -0x4(%r9) + ret + +L(less_4bytes): + cmp $2, %dl + jb L(less_2bytes) + mov (%rsi), %si + mov -0x2(%rcx), %cx + mov %si, (%rdi) + mov %cx, -0x2(%r9) + ret + +L(less_2bytes): + cmp $1, %dl + jb L(less_1bytes) + mov (%rsi), %cl + mov %cl, (%rdi) +L(less_1bytes): + ret + +L(512bytesormore): +#ifdef SHARED_CACHE_SIZE_HALF + mov $SHARED_CACHE_SIZE_HALF, %r8 +#else + mov __x86_shared_cache_size_half(%rip), %r8 +#endif + cmp %r8, %rdx + jae L(preloop_large) + cmp $1024, %rdx + ja L(1024bytesormore) + prefetcht1 (%rsi) + prefetcht1 0x40(%rsi) + prefetcht1 0x80(%rsi) + prefetcht1 0xC0(%rsi) + prefetcht1 0x100(%rsi) + prefetcht1 0x140(%rsi) + prefetcht1 0x180(%rsi) + prefetcht1 0x1C0(%rsi) + prefetcht1 -0x200(%rcx) + prefetcht1 -0x1C0(%rcx) + prefetcht1 -0x180(%rcx) + prefetcht1 -0x140(%rcx) + prefetcht1 -0x100(%rcx) + prefetcht1 -0xC0(%rcx) + prefetcht1 -0x80(%rcx) + prefetcht1 -0x40(%rcx) + vmovups (%rsi), %zmm0 + vmovups 0x40(%rsi), %zmm1 + vmovups 0x80(%rsi), %zmm2 + vmovups 0xC0(%rsi), %zmm3 + vmovups 0x100(%rsi), %zmm4 + vmovups 0x140(%rsi), %zmm5 + vmovups 0x180(%rsi), %zmm6 + vmovups 0x1C0(%rsi), %zmm7 + vmovups -0x200(%rcx), %zmm8 + vmovups -0x1C0(%rcx), %zmm9 + vmovups -0x180(%rcx), %zmm10 + vmovups -0x140(%rcx), %zmm11 + vmovups -0x100(%rcx), %zmm12 + vmovups -0xC0(%rcx), %zmm13 + vmovups -0x80(%rcx), %zmm14 + vmovups -0x40(%rcx), %zmm15 + vmovups %zmm0, (%rdi) + vmovups %zmm1, 0x40(%rdi) + vmovups %zmm2, 0x80(%rdi) + vmovups %zmm3, 0xC0(%rdi) + vmovups %zmm4, 0x100(%rdi) + vmovups %zmm5, 0x140(%rdi) + vmovups %zmm6, 0x180(%rdi) + vmovups %zmm7, 0x1C0(%rdi) + vmovups %zmm8, -0x200(%r9) + vmovups %zmm9, -0x1C0(%r9) + vmovups %zmm10, -0x180(%r9) + vmovups %zmm11, -0x140(%r9) + vmovups %zmm12, -0x100(%r9) + vmovups %zmm13, -0xC0(%r9) + vmovups %zmm14, -0x80(%r9) + vmovups %zmm15, -0x40(%r9) + ret + +L(1024bytesormore): + cmp %rsi, %rdi + ja L(1024bytesormore_bkw) + sub $512, %r9 + vmovups -0x200(%rcx), %zmm8 + vmovups -0x1C0(%rcx), %zmm9 + vmovups -0x180(%rcx), %zmm10 + vmovups -0x140(%rcx), %zmm11 + vmovups -0x100(%rcx), %zmm12 + vmovups -0xC0(%rcx), %zmm13 + vmovups -0x80(%rcx), %zmm14 + vmovups -0x40(%rcx), %zmm15 + prefetcht1 (%rsi) + prefetcht1 0x40(%rsi) + prefetcht1 0x80(%rsi) + prefetcht1 0xC0(%rsi) + prefetcht1 0x100(%rsi) + prefetcht1 0x140(%rsi) + prefetcht1 0x180(%rsi) + prefetcht1 0x1C0(%rsi) + +/* Loop with unaligned memory access. */ +L(gobble_512bytes_loop): + vmovups (%rsi), %zmm0 + vmovups 0x40(%rsi), %zmm1 + vmovups 0x80(%rsi), %zmm2 + vmovups 0xC0(%rsi), %zmm3 + vmovups 0x100(%rsi), %zmm4 + vmovups 0x140(%rsi), %zmm5 + vmovups 0x180(%rsi), %zmm6 + vmovups 0x1C0(%rsi), %zmm7 + add $512, %rsi + prefetcht1 (%rsi) + prefetcht1 0x40(%rsi) + prefetcht1 0x80(%rsi) + prefetcht1 0xC0(%rsi) + prefetcht1 0x100(%rsi) + prefetcht1 0x140(%rsi) + prefetcht1 0x180(%rsi) + prefetcht1 0x1C0(%rsi) + vmovups %zmm0, (%rdi) + vmovups %zmm1, 0x40(%rdi) + vmovups %zmm2, 0x80(%rdi) + vmovups %zmm3, 0xC0(%rdi) + vmovups %zmm4, 0x100(%rdi) + vmovups %zmm5, 0x140(%rdi) + vmovups %zmm6, 0x180(%rdi) + vmovups %zmm7, 0x1C0(%rdi) + add $512, %rdi + cmp %r9, %rdi + jb L(gobble_512bytes_loop) + vmovups %zmm8, (%r9) + vmovups %zmm9, 0x40(%r9) + vmovups %zmm10, 0x80(%r9) + vmovups %zmm11, 0xC0(%r9) + vmovups %zmm12, 0x100(%r9) + vmovups %zmm13, 0x140(%r9) + vmovups %zmm14, 0x180(%r9) + vmovups %zmm15, 0x1C0(%r9) + ret + +L(1024bytesormore_bkw): + add $512, %rdi + vmovups 0x1C0(%rsi), %zmm8 + vmovups 0x180(%rsi), %zmm9 + vmovups 0x140(%rsi), %zmm10 + vmovups 0x100(%rsi), %zmm11 + vmovups 0xC0(%rsi), %zmm12 + vmovups 0x80(%rsi), %zmm13 + vmovups 0x40(%rsi), %zmm14 + vmovups (%rsi), %zmm15 + prefetcht1 -0x40(%rcx) + prefetcht1 -0x80(%rcx) + prefetcht1 -0xC0(%rcx) + prefetcht1 -0x100(%rcx) + prefetcht1 -0x140(%rcx) + prefetcht1 -0x180(%rcx) + prefetcht1 -0x1C0(%rcx) + prefetcht1 -0x200(%rcx) + +/* Backward loop with unaligned memory access. */ +L(gobble_512bytes_loop_bkw): + vmovups -0x40(%rcx), %zmm0 + vmovups -0x80(%rcx), %zmm1 + vmovups -0xC0(%rcx), %zmm2 + vmovups -0x100(%rcx), %zmm3 + vmovups -0x140(%rcx), %zmm4 + vmovups -0x180(%rcx), %zmm5 + vmovups -0x1C0(%rcx), %zmm6 + vmovups -0x200(%rcx), %zmm7 + sub $512, %rcx + prefetcht1 -0x40(%rcx) + prefetcht1 -0x80(%rcx) + prefetcht1 -0xC0(%rcx) + prefetcht1 -0x100(%rcx) + prefetcht1 -0x140(%rcx) + prefetcht1 -0x180(%rcx) + prefetcht1 -0x1C0(%rcx) + prefetcht1 -0x200(%rcx) + vmovups %zmm0, -0x40(%r9) + vmovups %zmm1, -0x80(%r9) + vmovups %zmm2, -0xC0(%r9) + vmovups %zmm3, -0x100(%r9) + vmovups %zmm4, -0x140(%r9) + vmovups %zmm5, -0x180(%r9) + vmovups %zmm6, -0x1C0(%r9) + vmovups %zmm7, -0x200(%r9) + sub $512, %r9 + cmp %rdi, %r9 + ja L(gobble_512bytes_loop_bkw) + vmovups %zmm8, -0x40(%rdi) + vmovups %zmm9, -0x80(%rdi) + vmovups %zmm10, -0xC0(%rdi) + vmovups %zmm11, -0x100(%rdi) + vmovups %zmm12, -0x140(%rdi) + vmovups %zmm13, -0x180(%rdi) + vmovups %zmm14, -0x1C0(%rdi) + vmovups %zmm15, -0x200(%rdi) + ret + +L(preloop_large): + cmp %rsi, %rdi + ja L(preloop_large_bkw) + vmovups (%rsi), %zmm4 + vmovups 0x40(%rsi), %zmm5 + +/* Align destination for access with non-temporal stores in the loop. */ + mov %rdi, %r8 + and $-0x80, %rdi + add $0x80, %rdi + sub %rdi, %r8 + sub %r8, %rsi + add %r8, %rdx +L(gobble_256bytes_nt_loop): + prefetcht1 0x200(%rsi) + prefetcht1 0x240(%rsi) + prefetcht1 0x280(%rsi) + prefetcht1 0x2C0(%rsi) + prefetcht1 0x300(%rsi) + prefetcht1 0x340(%rsi) + prefetcht1 0x380(%rsi) + prefetcht1 0x3C0(%rsi) + vmovdqu64 (%rsi), %zmm0 + vmovdqu64 0x40(%rsi), %zmm1 + vmovdqu64 0x80(%rsi), %zmm2 + vmovdqu64 0xC0(%rsi), %zmm3 + vmovntdq %zmm0, (%rdi) + vmovntdq %zmm1, 0x40(%rdi) + vmovntdq %zmm2, 0x80(%rdi) + vmovntdq %zmm3, 0xC0(%rdi) + sub $256, %rdx + add $256, %rsi + add $256, %rdi + cmp $256, %rdx + ja L(gobble_256bytes_nt_loop) + sfence + vmovups %zmm4, (%rax) + vmovups %zmm5, 0x40(%rax) + jmp L(check) + +L(preloop_large_bkw): + vmovups -0x80(%rcx), %zmm4 + vmovups -0x40(%rcx), %zmm5 + +/* Align end of destination for access with non-temporal stores. */ + mov %r9, %r8 + and $-0x80, %r9 + sub %r9, %r8 + sub %r8, %rcx + sub %r8, %rdx + add %r9, %r8 +L(gobble_256bytes_nt_loop_bkw): + prefetcht1 -0x400(%rcx) + prefetcht1 -0x3C0(%rcx) + prefetcht1 -0x380(%rcx) + prefetcht1 -0x340(%rcx) + prefetcht1 -0x300(%rcx) + prefetcht1 -0x2C0(%rcx) + prefetcht1 -0x280(%rcx) + prefetcht1 -0x240(%rcx) + vmovdqu64 -0x100(%rcx), %zmm0 + vmovdqu64 -0xC0(%rcx), %zmm1 + vmovdqu64 -0x80(%rcx), %zmm2 + vmovdqu64 -0x40(%rcx), %zmm3 + vmovntdq %zmm0, -0x100(%r9) + vmovntdq %zmm1, -0xC0(%r9) + vmovntdq %zmm2, -0x80(%r9) + vmovntdq %zmm3, -0x40(%r9) + sub $256, %rdx + sub $256, %rcx + sub $256, %r9 + cmp $256, %rdx + ja L(gobble_256bytes_nt_loop_bkw) + sfence + vmovups %zmm4, -0x80(%r8) + vmovups %zmm5, -0x40(%r8) + jmp L(check) +END (MEMCPY) +#endif Index: glibc-2.22/sysdeps/x86_64/multiarch/memcpy.S =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/memcpy.S +++ glibc-2.22/sysdeps/x86_64/multiarch/memcpy.S @@ -32,6 +32,15 @@ ENTRY(__new_memcpy) cmpl $0, KIND_OFFSET+__cpu_features(%rip) jne 1f call __init_cpu_features +1: +#ifdef HAVE_AVX512_ASM_SUPPORT + testl $bit_AVX512F_Usable, __cpu_features+FEATURE_OFFSET+index_AVX512F_Usable(%rip) + jz 1f + testl $bit_Prefer_No_VZEROUPPER, __cpu_features+FEATURE_OFFSET+index_Prefer_No_VZEROUPPER(%rip) + jz 1f + leaq __memcpy_avx512_no_vzeroupper(%rip), %rax + ret +#endif 1: leaq __memcpy_avx_unaligned(%rip), %rax testl $bit_AVX_Fast_Unaligned_Load, __cpu_features+FEATURE_OFFSET+index_AVX_Fast_Unaligned_Load(%rip) jz 1f Index: glibc-2.22/sysdeps/x86_64/multiarch/memcpy_chk.S =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/memcpy_chk.S +++ glibc-2.22/sysdeps/x86_64/multiarch/memcpy_chk.S @@ -32,6 +32,15 @@ ENTRY(__memcpy_chk) cmpl $0, KIND_OFFSET+__cpu_features(%rip) jne 1f call __init_cpu_features +1: +#ifdef HAVE_AVX512_ASM_SUPPORT + testl $bit_AVX512F_Usable, __cpu_features+FEATURE_OFFSET+index_AVX512F_Usable(%rip) + jz 1f + testl $bit_Prefer_No_VZEROUPPER, __cpu_features+FEATURE_OFFSET+index_Prefer_No_VZEROUPPER(%rip) + jz 1f + leaq __memcpy_chk_avx512_no_vzeroupper(%rip), %rax + ret +#endif 1: leaq __memcpy_chk_sse2(%rip), %rax testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) jz 2f Index: glibc-2.22/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S @@ -0,0 +1,22 @@ +/* memmove optimized with AVX512 for KNL hardware. + Copyright (C) 2016 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 + <http://www.gnu.org/licenses/>. */ + +#define USE_AS_MEMMOVE +#define MEMCPY __memmove_avx512_no_vzeroupper +#define MEMCPY_CHK __memmove_chk_avx512_no_vzeroupper +#include "memcpy-avx512-no-vzeroupper.S" Index: glibc-2.22/sysdeps/x86_64/multiarch/memmove.c =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/memmove.c +++ glibc-2.22/sysdeps/x86_64/multiarch/memmove.c @@ -36,6 +36,9 @@ extern __typeof (__redirect_memmove) __m extern __typeof (__redirect_memmove) __memmove_ssse3 attribute_hidden; extern __typeof (__redirect_memmove) __memmove_ssse3_back attribute_hidden; extern __typeof (__redirect_memmove) __memmove_avx_unaligned attribute_hidden; +# ifdef HAVE_AVX512_ASM_SUPPORT + extern __typeof (__redirect_memmove) __memmove_avx512_no_vzeroupper attribute_hidden; +# endif #endif @@ -49,12 +52,18 @@ extern __typeof (__redirect_memmove) __m ifunc symbol properly. */ extern __typeof (__redirect_memmove) __libc_memmove; libc_ifunc (__libc_memmove, - HAS_AVX_FAST_UNALIGNED_LOAD +#ifdef HAVE_AVX512_ASM_SUPPORT + HAS_ARCH_FEATURE (AVX512F_Usable) + && HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) + ? __memmove_avx512_no_vzeroupper + : +#endif + (HAS_AVX_FAST_UNALIGNED_LOAD ? __memmove_avx_unaligned : (HAS_SSSE3 ? (HAS_FAST_COPY_BACKWARD ? __memmove_ssse3_back : __memmove_ssse3) - : __memmove_sse2)); + : __memmove_sse2))); strong_alias (__libc_memmove, memmove) Index: glibc-2.22/sysdeps/x86_64/multiarch/memmove_chk.c =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/memmove_chk.c +++ glibc-2.22/sysdeps/x86_64/multiarch/memmove_chk.c @@ -26,10 +26,19 @@ extern __typeof (__memmove_chk) __memmov extern __typeof (__memmove_chk) __memmove_chk_ssse3 attribute_hidden; extern __typeof (__memmove_chk) __memmove_chk_ssse3_back attribute_hidden; extern __typeof (__memmove_chk) __memmove_chk_avx_unaligned attribute_hidden; +# ifdef HAVE_AVX512_ASM_SUPPORT + extern __typeof (__memmove_chk) __memmove_chk_avx512_no_vzeroupper attribute_hidden; +# endif #include "debug/memmove_chk.c" libc_ifunc (__memmove_chk, +#ifdef HAVE_AVX512_ASM_SUPPORT + HAS_ARCH_FEATURE (AVX512F_Usable) + && HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) + ? __memmove_chk_avx512_no_vzeroupper + : +#endif HAS_AVX_FAST_UNALIGNED_LOAD ? __memmove_chk_avx_unaligned : (HAS_SSSE3 ? (HAS_FAST_COPY_BACKWARD Index: glibc-2.22/sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S @@ -0,0 +1,22 @@ +/* mempcpy optimized with AVX512 for KNL hardware. + Copyright (C) 2016 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 + <http://www.gnu.org/licenses/>. */ + +#define USE_AS_MEMPCPY +#define MEMCPY __mempcpy_avx512_no_vzeroupper +#define MEMCPY_CHK __mempcpy_chk_avx512_no_vzeroupper +#include "memcpy-avx512-no-vzeroupper.S" Index: glibc-2.22/sysdeps/x86_64/multiarch/mempcpy.S =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/mempcpy.S +++ glibc-2.22/sysdeps/x86_64/multiarch/mempcpy.S @@ -30,6 +30,15 @@ ENTRY(__mempcpy) cmpl $0, KIND_OFFSET+__cpu_features(%rip) jne 1f call __init_cpu_features +1: +#ifdef HAVE_AVX512_ASM_SUPPORT + testl $bit_AVX512F_Usable, __cpu_features+FEATURE_OFFSET+index_AVX512F_Usable(%rip) + jz 1f + testl $bit_Prefer_No_VZEROUPPER, __cpu_features+FEATURE_OFFSET+index_Prefer_No_VZEROUPPER(%rip) + jz 1f + leaq __mempcpy_avx512_no_vzeroupper(%rip), %rax + ret +#endif 1: leaq __mempcpy_sse2(%rip), %rax testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) jz 2f Index: glibc-2.22/sysdeps/x86_64/multiarch/mempcpy_chk.S =================================================================== --- glibc-2.22.orig/sysdeps/x86_64/multiarch/mempcpy_chk.S +++ glibc-2.22/sysdeps/x86_64/multiarch/mempcpy_chk.S @@ -32,6 +32,15 @@ ENTRY(__mempcpy_chk) cmpl $0, KIND_OFFSET+__cpu_features(%rip) jne 1f call __init_cpu_features +1: +#ifdef HAVE_AVX512_ASM_SUPPORT + testl $bit_AVX512F_Usable, __cpu_features+FEATURE_OFFSET+index_AVX512F_Usable(%rip) + jz 1f + testl $bit_Prefer_No_VZEROUPPER, __cpu_features+FEATURE_OFFSET+index_Prefer_No_VZEROUPPER(%rip) + jz 1f + leaq __mempcpy_chk_avx512_no_vzeroupper(%rip), %rax + ret +#endif 1: leaq __mempcpy_chk_sse2(%rip), %rax testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) jz 2f
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