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Added memcpy/memmove family optimized with AVX512 for KNL hardware.

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Added AVX512 implementations of memcpy, mempcpy, memmove, memcpy_chk,
mempcpy_chk, memmove_chk.
It shows average improvement more than 30% over AVX versions on KNL
hardware (performance results in the thread
<https://sourceware.org/ml/libc-alpha/2016-01/msg00258.html>).

    * 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.
This commit is contained in:
Andrew Senkevich 2016-01-16 00:49:45 +03:00
parent b02840bacd
commit 72276d6e88
12 changed files with 555 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
ChangeLog
View File

@ -1,3 +1,17 @@
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.
2016-01-15 Torvald Riegel <triegel@redhat.com>
[BZ #13065]

11
sysdeps/x86_64/multiarch/Makefile
View File

@ -7,11 +7,12 @@ 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 \

22
sysdeps/x86_64/multiarch/ifunc-impl-list.c
View File

@ -24,7 +24,7 @@
#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
@ -46,8 +46,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memcmp_ssse3)
IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_sse2))
/* Support sysdeps/x86_64/multiarch/memmove_chk.S. */
/* Support sysdeps/x86_64/multiarch/memmove_chk.c. */
IFUNC_IMPL (i, name, __memmove_chk,
IFUNC_IMPL_ADD (array, i, __memmove_chk,
HAS_ARCH_FEATURE (AVX512F_Usable),
__memmove_chk_avx512_no_vzeroupper)
IFUNC_IMPL_ADD (array, i, __memmove_chk,
HAS_ARCH_FEATURE (AVX_Usable),
__memmove_chk_avx_unaligned)
@ -65,6 +68,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_IMPL_ADD (array, i, memmove,
HAS_ARCH_FEATURE (AVX_Usable),
__memmove_avx_unaligned)
IFUNC_IMPL_ADD (array, i, memmove,
HAS_ARCH_FEATURE (AVX512F_Usable),
__memmove_avx512_no_vzeroupper)
IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSSE3),
__memmove_ssse3_back)
IFUNC_IMPL_ADD (array, i, memmove, HAS_CPU_FEATURE (SSSE3),
@ -253,6 +259,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
#ifdef SHARED
/* Support sysdeps/x86_64/multiarch/memcpy_chk.S. */
IFUNC_IMPL (i, name, __memcpy_chk,
IFUNC_IMPL_ADD (array, i, __memcpy_chk,
HAS_ARCH_FEATURE (AVX512F_Usable),
__memcpy_chk_avx512_no_vzeroupper)
IFUNC_IMPL_ADD (array, i, __memcpy_chk,
HAS_ARCH_FEATURE (AVX_Usable),
__memcpy_chk_avx_unaligned)
@ -274,11 +283,17 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memcpy_ssse3_back)
IFUNC_IMPL_ADD (array, i, memcpy, HAS_CPU_FEATURE (SSSE3),
__memcpy_ssse3)
IFUNC_IMPL_ADD (array, i, memcpy,
HAS_ARCH_FEATURE (AVX512F_Usable),
__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_ARCH_FEATURE (AVX512F_Usable),
__mempcpy_chk_avx512_no_vzeroupper)
IFUNC_IMPL_ADD (array, i, __mempcpy_chk,
HAS_ARCH_FEATURE (AVX_Usable),
__mempcpy_chk_avx_unaligned)
@ -293,6 +308,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/mempcpy.S. */
IFUNC_IMPL (i, name, mempcpy,
IFUNC_IMPL_ADD (array, i, mempcpy,
HAS_ARCH_FEATURE (AVX512F_Usable),
__mempcpy_avx512_no_vzeroupper)
IFUNC_IMPL_ADD (array, i, mempcpy,
HAS_ARCH_FEATURE (AVX_Usable),
__mempcpy_avx_unaligned)

408
sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S Normal file
View File

@ -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

24
sysdeps/x86_64/multiarch/memcpy.S
View File

@ -30,19 +30,27 @@
ENTRY(__new_memcpy)
.type __new_memcpy, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __memcpy_avx_unaligned(%rip), %rax
HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
jz 1f
#ifdef HAVE_AVX512_ASM_SUPPORT
HAS_ARCH_FEATURE (AVX512F_Usable)
jz 1f
HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
jz 1f
leaq __memcpy_avx512_no_vzeroupper(%rip), %rax
ret
1: leaq __memcpy_sse2(%rip), %rax
#endif
1: leaq __memcpy_avx_unaligned(%rip), %rax
HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
jz 2f
ret
2: leaq __memcpy_sse2(%rip), %rax
HAS_ARCH_FEATURE (Slow_BSF)
jnz 2f
jnz 3f
leaq __memcpy_sse2_unaligned(%rip), %rax
ret
2: HAS_CPU_FEATURE (SSSE3)
jz 3f
3: HAS_CPU_FEATURE (SSSE3)
jz 4f
leaq __memcpy_ssse3(%rip), %rax
3: ret
4: ret
END(__new_memcpy)
# undef ENTRY

10
sysdeps/x86_64/multiarch/memcpy_chk.S
View File

@ -30,7 +30,15 @@
ENTRY(__memcpy_chk)
.type __memcpy_chk, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __memcpy_chk_sse2(%rip), %rax
#ifdef HAVE_AVX512_ASM_SUPPORT
HAS_ARCH_FEATURE (AVX512F_Usable)
jz 1f
# HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
# jz 1f
leaq __memcpy_avx512_no_vzeroupper(%rip), %rax
ret
#endif
1: leaq __memcpy_chk_sse2(%rip), %rax
HAS_CPU_FEATURE (SSSE3)
jz 2f
leaq __memcpy_chk_ssse3(%rip), %rax

22
sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S Normal file
View File

@ -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"

13
sysdeps/x86_64/multiarch/memmove.c
View File

@ -36,6 +36,9 @@ extern __typeof (__redirect_memmove) __memmove_sse2 attribute_hidden;
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) __memmove_avx_unaligned attribute_hidden;
ifunc symbol properly. */
extern __typeof (__redirect_memmove) __libc_memmove;
libc_ifunc (__libc_memmove,
HAS_ARCH_FEATURE (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_ARCH_FEATURE (AVX_Fast_Unaligned_Load)
? __memmove_avx_unaligned
: (HAS_CPU_FEATURE (SSSE3)
? (HAS_ARCH_FEATURE (Fast_Copy_Backward)
? __memmove_ssse3_back : __memmove_ssse3)
: __memmove_sse2));
: __memmove_sse2)));
strong_alias (__libc_memmove, memmove)

9
sysdeps/x86_64/multiarch/memmove_chk.c
View File

@ -26,10 +26,19 @@ extern __typeof (__memmove_chk) __memmove_chk_sse2 attribute_hidden;
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_ARCH_FEATURE (AVX_Fast_Unaligned_Load) ? __memmove_chk_avx_unaligned :
(HAS_CPU_FEATURE (SSSE3)
? (HAS_ARCH_FEATURE (Fast_Copy_Backward)

22
sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S Normal file
View File

@ -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"

10
sysdeps/x86_64/multiarch/mempcpy.S
View File

@ -28,7 +28,15 @@
ENTRY(__mempcpy)
.type __mempcpy, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __mempcpy_sse2(%rip), %rax
#ifdef HAVE_AVX512_ASM_SUPPORT
HAS_ARCH_FEATURE (AVX512F_Usable)
jz 1f
HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
jz 1f
leaq __mempcpy_avx512_no_vzeroupper(%rip), %rax
ret
#endif
1: leaq __mempcpy_sse2(%rip), %rax
HAS_CPU_FEATURE (SSSE3)
jz 2f
leaq __mempcpy_ssse3(%rip), %rax

10
sysdeps/x86_64/multiarch/mempcpy_chk.S
View File

@ -30,7 +30,15 @@
ENTRY(__mempcpy_chk)
.type __mempcpy_chk, @gnu_indirect_function
LOAD_RTLD_GLOBAL_RO_RDX
leaq __mempcpy_chk_sse2(%rip), %rax
#ifdef HAVE_AVX512_ASM_SUPPORT
HAS_ARCH_FEATURE (AVX512F_Usable)
jz 1f
HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
jz 1f
leaq __mempcpy_chk_avx512_no_vzeroupper(%rip), %rax
ret
#endif
1: leaq __mempcpy_chk_sse2(%rip), %rax
HAS_CPU_FEATURE (SSSE3)
jz 2f
leaq __mempcpy_chk_ssse3(%rip), %rax