Tuned loops with non-temporal access. andros/avx512f-mem

    * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: Tuned
    prefetch.

1 files changed, 412 insertions, 410 deletions

diff --git a/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S b/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
index cc02934a82..75bc836d0c 100644
--- a/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
+++ b/sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S
@@ -1,410 +1,412 @@
-/* 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

-	prefetcht1 (%rsi)

-	prefetcht1 0x40(%rsi)

-	prefetcht1 0x80(%rsi)

-	prefetcht1 0xC0(%rsi)

-L(gobble_256bytes_nt_loop):

-	vmovups	(%rsi), %zmm0

-	prefetcht1 0x100(%rsi)

-	vmovups	0x40(%rsi), %zmm1

-	prefetcht1 0x140(%rsi)

-	vmovups	0x80(%rsi), %zmm2

-	prefetcht1 0x180(%rsi)

-	vmovups	0xC0(%rsi), %zmm3

-	prefetcht1 0x1C0(%rsi)

-	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

- 	prefetcht1 -0x100(%rcx)

-	prefetcht1 -0xC0(%rcx)

-	prefetcht1 -0x80(%rcx)

-	prefetcht1 -0x40(%rcx)

-L(gobble_256bytes_nt_loop_bkw):

-	vmovups	-0x100(%rcx), %zmm0

-	prefetcht1 -0x200(%rcx)

-	vmovups	-0xC0(%rcx), %zmm1

-	prefetcht1 -0x1C0(%rcx)

-	vmovups	-0x80(%rcx), %zmm2

-	prefetcht1 -0x180(%rcx)

-	vmovups	-0x40(%rcx), %zmm3

-	prefetcht1 -0x140(%rcx)

-	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

+/* 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
+	prefetcht1 (%rsi)
+	prefetcht1 0x40(%rsi)
+	prefetcht1 0x80(%rsi)
+	prefetcht1 0xC0(%rsi)
+L(gobble_256bytes_nt_loop):
+	prefetcht1 0x200(%rsi)
+	prefetcht1 0x240(%rsi)
+	prefetcht1 0x280(%rsi)
+	prefetcht1 0x2C0(%rsi)
+	prefetchnta 0x300(%rsi)
+	prefetchnta 0x340(%rsi)
+	prefetchnta 0x380(%rsi)
+	prefetchnta 0x3C0(%rsi)
+	vmovups	(%rsi), %zmm0
+	vmovups	0x40(%rsi), %zmm1
+	vmovups	0x80(%rsi), %zmm2
+	vmovups	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 -0x300(%rcx)
+	prefetcht1 -0x2C0(%rcx)
+	prefetcht1 -0x280(%rcx)
+	prefetcht1 -0x240(%rcx)
+	prefetchnta -0x400(%rcx)
+	prefetchnta -0x3C0(%rcx)
+	prefetchnta -0x380(%rcx)
+	prefetchnta -0x340(%rcx)
+	vmovups	-0x100(%rcx), %zmm0
+	vmovups	-0xC0(%rcx), %zmm1
+	vmovups	-0x80(%rcx), %zmm2
+	vmovups	-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