File avx512-knl-memcpy.patch of Package glibc
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
