2014-07-14 04:02:52 +00:00
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/* memcpy with AVX
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2016-01-04 16:05:18 +00:00
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Copyright (C) 2014-2016 Free Software Foundation, Inc.
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2014-07-14 04:02:52 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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2014-11-24 09:33:45 +00:00
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#if IS_IN (libc) \
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2014-07-14 04:02:52 +00:00
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&& (defined SHARED \
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|| defined USE_AS_MEMMOVE \
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|| !defined USE_MULTIARCH)
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#include "asm-syntax.h"
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#ifndef MEMCPY
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2016-03-28 20:13:36 +00:00
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# define MEMCPY __memcpy_avx_unaligned
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2014-07-14 04:02:52 +00:00
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# define MEMCPY_CHK __memcpy_chk_avx_unaligned
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2016-03-28 20:13:36 +00:00
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# define MEMPCPY __mempcpy_avx_unaligned
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# define MEMPCPY_CHK __mempcpy_chk_avx_unaligned
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2014-07-14 04:02:52 +00:00
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#endif
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.section .text.avx,"ax",@progbits
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2016-03-28 20:13:36 +00:00
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#if !defined USE_AS_MEMPCPY && !defined USE_AS_MEMMOVE
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ENTRY (MEMPCPY_CHK)
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cmpq %rdx, %rcx
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jb HIDDEN_JUMPTARGET (__chk_fail)
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END (MEMPCPY_CHK)
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ENTRY (MEMPCPY)
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movq %rdi, %rax
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addq %rdx, %rax
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jmp L(start)
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END (MEMPCPY)
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#endif
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2014-07-14 04:02:52 +00:00
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#if !defined USE_AS_BCOPY
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ENTRY (MEMCPY_CHK)
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cmpq %rdx, %rcx
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jb HIDDEN_JUMPTARGET (__chk_fail)
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END (MEMCPY_CHK)
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#endif
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ENTRY (MEMCPY)
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mov %rdi, %rax
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#ifdef USE_AS_MEMPCPY
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add %rdx, %rax
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#endif
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2016-03-28 20:13:36 +00:00
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L(start):
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2014-07-14 04:02:52 +00:00
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cmp $256, %rdx
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jae L(256bytesormore)
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cmp $16, %dl
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jb L(less_16bytes)
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cmp $128, %dl
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jb L(less_128bytes)
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vmovdqu (%rsi), %xmm0
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lea (%rsi, %rdx), %rcx
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vmovdqu 0x10(%rsi), %xmm1
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vmovdqu 0x20(%rsi), %xmm2
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vmovdqu 0x30(%rsi), %xmm3
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vmovdqu 0x40(%rsi), %xmm4
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vmovdqu 0x50(%rsi), %xmm5
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vmovdqu 0x60(%rsi), %xmm6
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vmovdqu 0x70(%rsi), %xmm7
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vmovdqu -0x80(%rcx), %xmm8
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vmovdqu -0x70(%rcx), %xmm9
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vmovdqu -0x60(%rcx), %xmm10
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vmovdqu -0x50(%rcx), %xmm11
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vmovdqu -0x40(%rcx), %xmm12
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vmovdqu -0x30(%rcx), %xmm13
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vmovdqu -0x20(%rcx), %xmm14
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vmovdqu -0x10(%rcx), %xmm15
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lea (%rdi, %rdx), %rdx
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vmovdqu %xmm0, (%rdi)
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vmovdqu %xmm1, 0x10(%rdi)
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vmovdqu %xmm2, 0x20(%rdi)
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vmovdqu %xmm3, 0x30(%rdi)
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vmovdqu %xmm4, 0x40(%rdi)
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vmovdqu %xmm5, 0x50(%rdi)
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vmovdqu %xmm6, 0x60(%rdi)
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vmovdqu %xmm7, 0x70(%rdi)
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vmovdqu %xmm8, -0x80(%rdx)
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vmovdqu %xmm9, -0x70(%rdx)
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vmovdqu %xmm10, -0x60(%rdx)
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vmovdqu %xmm11, -0x50(%rdx)
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vmovdqu %xmm12, -0x40(%rdx)
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vmovdqu %xmm13, -0x30(%rdx)
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vmovdqu %xmm14, -0x20(%rdx)
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vmovdqu %xmm15, -0x10(%rdx)
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ret
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.p2align 4
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L(less_128bytes):
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cmp $64, %dl
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jb L(less_64bytes)
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vmovdqu (%rsi), %xmm0
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lea (%rsi, %rdx), %rcx
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vmovdqu 0x10(%rsi), %xmm1
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vmovdqu 0x20(%rsi), %xmm2
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lea (%rdi, %rdx), %rdx
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vmovdqu 0x30(%rsi), %xmm3
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vmovdqu -0x40(%rcx), %xmm4
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vmovdqu -0x30(%rcx), %xmm5
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vmovdqu -0x20(%rcx), %xmm6
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vmovdqu -0x10(%rcx), %xmm7
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vmovdqu %xmm0, (%rdi)
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vmovdqu %xmm1, 0x10(%rdi)
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vmovdqu %xmm2, 0x20(%rdi)
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vmovdqu %xmm3, 0x30(%rdi)
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vmovdqu %xmm4, -0x40(%rdx)
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vmovdqu %xmm5, -0x30(%rdx)
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vmovdqu %xmm6, -0x20(%rdx)
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vmovdqu %xmm7, -0x10(%rdx)
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ret
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.p2align 4
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L(less_64bytes):
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cmp $32, %dl
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jb L(less_32bytes)
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vmovdqu (%rsi), %xmm0
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vmovdqu 0x10(%rsi), %xmm1
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vmovdqu -0x20(%rsi, %rdx), %xmm6
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vmovdqu -0x10(%rsi, %rdx), %xmm7
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vmovdqu %xmm0, (%rdi)
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vmovdqu %xmm1, 0x10(%rdi)
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vmovdqu %xmm6, -0x20(%rdi, %rdx)
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vmovdqu %xmm7, -0x10(%rdi, %rdx)
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ret
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.p2align 4
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L(less_32bytes):
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vmovdqu (%rsi), %xmm0
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vmovdqu -0x10(%rsi, %rdx), %xmm7
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vmovdqu %xmm0, (%rdi)
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vmovdqu %xmm7, -0x10(%rdi, %rdx)
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ret
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.p2align 4
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L(less_16bytes):
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cmp $8, %dl
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jb L(less_8bytes)
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movq -0x08(%rsi, %rdx), %rcx
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movq (%rsi), %rsi
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movq %rsi, (%rdi)
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movq %rcx, -0x08(%rdi, %rdx)
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ret
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.p2align 4
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L(less_8bytes):
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cmp $4, %dl
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jb L(less_4bytes)
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mov -0x04(%rsi, %rdx), %ecx
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mov (%rsi), %esi
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mov %esi, (%rdi)
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mov %ecx, -0x04(%rdi, %rdx)
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ret
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L(less_4bytes):
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cmp $1, %dl
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jbe L(less_2bytes)
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mov -0x02(%rsi, %rdx), %cx
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mov (%rsi), %si
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mov %si, (%rdi)
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mov %cx, -0x02(%rdi, %rdx)
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ret
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L(less_2bytes):
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jb L(less_0bytes)
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mov (%rsi), %cl
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mov %cl, (%rdi)
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L(less_0bytes):
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ret
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.p2align 4
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L(256bytesormore):
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#ifdef USE_AS_MEMMOVE
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mov %rdi, %rcx
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sub %rsi, %rcx
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cmp %rdx, %rcx
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jc L(copy_backward)
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#endif
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cmp $2048, %rdx
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jae L(gobble_data_movsb)
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mov %rax, %r8
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lea (%rsi, %rdx), %rcx
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mov %rdi, %r10
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vmovdqu -0x80(%rcx), %xmm5
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vmovdqu -0x70(%rcx), %xmm6
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mov $0x80, %rax
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and $-32, %rdi
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add $32, %rdi
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vmovdqu -0x60(%rcx), %xmm7
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vmovdqu -0x50(%rcx), %xmm8
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mov %rdi, %r11
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sub %r10, %r11
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vmovdqu -0x40(%rcx), %xmm9
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vmovdqu -0x30(%rcx), %xmm10
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sub %r11, %rdx
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vmovdqu -0x20(%rcx), %xmm11
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vmovdqu -0x10(%rcx), %xmm12
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vmovdqu (%rsi), %ymm4
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add %r11, %rsi
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sub %eax, %edx
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L(goble_128_loop):
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vmovdqu (%rsi), %ymm0
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vmovdqu 0x20(%rsi), %ymm1
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vmovdqu 0x40(%rsi), %ymm2
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vmovdqu 0x60(%rsi), %ymm3
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add %rax, %rsi
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vmovdqa %ymm0, (%rdi)
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vmovdqa %ymm1, 0x20(%rdi)
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vmovdqa %ymm2, 0x40(%rdi)
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vmovdqa %ymm3, 0x60(%rdi)
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add %rax, %rdi
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sub %eax, %edx
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jae L(goble_128_loop)
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add %eax, %edx
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add %rdi, %rdx
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vmovdqu %ymm4, (%r10)
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vzeroupper
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vmovdqu %xmm5, -0x80(%rdx)
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vmovdqu %xmm6, -0x70(%rdx)
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vmovdqu %xmm7, -0x60(%rdx)
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vmovdqu %xmm8, -0x50(%rdx)
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vmovdqu %xmm9, -0x40(%rdx)
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vmovdqu %xmm10, -0x30(%rdx)
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vmovdqu %xmm11, -0x20(%rdx)
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vmovdqu %xmm12, -0x10(%rdx)
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mov %r8, %rax
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ret
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.p2align 4
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L(gobble_data_movsb):
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#ifdef SHARED_CACHE_SIZE_HALF
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mov $SHARED_CACHE_SIZE_HALF, %rcx
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#else
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mov __x86_shared_cache_size_half(%rip), %rcx
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#endif
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shl $3, %rcx
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cmp %rcx, %rdx
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jae L(gobble_big_data_fwd)
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mov %rdx, %rcx
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rep movsb
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ret
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.p2align 4
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L(gobble_big_data_fwd):
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lea (%rsi, %rdx), %rcx
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vmovdqu (%rsi), %ymm4
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vmovdqu -0x80(%rsi,%rdx), %xmm5
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vmovdqu -0x70(%rcx), %xmm6
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vmovdqu -0x60(%rcx), %xmm7
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vmovdqu -0x50(%rcx), %xmm8
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vmovdqu -0x40(%rcx), %xmm9
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vmovdqu -0x30(%rcx), %xmm10
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vmovdqu -0x20(%rcx), %xmm11
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vmovdqu -0x10(%rcx), %xmm12
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mov %rdi, %r8
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and $-32, %rdi
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add $32, %rdi
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mov %rdi, %r10
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sub %r8, %r10
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sub %r10, %rdx
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add %r10, %rsi
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lea (%rdi, %rdx), %rcx
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add $-0x80, %rdx
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L(gobble_mem_fwd_loop):
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prefetchnta 0x1c0(%rsi)
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prefetchnta 0x280(%rsi)
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vmovdqu (%rsi), %ymm0
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vmovdqu 0x20(%rsi), %ymm1
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vmovdqu 0x40(%rsi), %ymm2
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vmovdqu 0x60(%rsi), %ymm3
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sub $-0x80, %rsi
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vmovntdq %ymm0, (%rdi)
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vmovntdq %ymm1, 0x20(%rdi)
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vmovntdq %ymm2, 0x40(%rdi)
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vmovntdq %ymm3, 0x60(%rdi)
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sub $-0x80, %rdi
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add $-0x80, %rdx
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jb L(gobble_mem_fwd_loop)
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sfence
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vmovdqu %ymm4, (%r8)
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vzeroupper
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vmovdqu %xmm5, -0x80(%rcx)
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vmovdqu %xmm6, -0x70(%rcx)
|
|
|
|
|
vmovdqu %xmm7, -0x60(%rcx)
|
|
|
|
|
vmovdqu %xmm8, -0x50(%rcx)
|
|
|
|
|
vmovdqu %xmm9, -0x40(%rcx)
|
|
|
|
|
vmovdqu %xmm10, -0x30(%rcx)
|
|
|
|
|
vmovdqu %xmm11, -0x20(%rcx)
|
|
|
|
|
vmovdqu %xmm12, -0x10(%rcx)
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
#ifdef USE_AS_MEMMOVE
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(copy_backward):
|
|
|
|
|
#ifdef SHARED_CACHE_SIZE_HALF
|
|
|
|
|
mov $SHARED_CACHE_SIZE_HALF, %rcx
|
|
|
|
|
#else
|
|
|
|
|
mov __x86_shared_cache_size_half(%rip), %rcx
|
|
|
|
|
#endif
|
|
|
|
|
shl $3, %rcx
|
|
|
|
|
vmovdqu (%rsi), %xmm5
|
|
|
|
|
vmovdqu 0x10(%rsi), %xmm6
|
|
|
|
|
add %rdx, %rdi
|
|
|
|
|
vmovdqu 0x20(%rsi), %xmm7
|
|
|
|
|
vmovdqu 0x30(%rsi), %xmm8
|
|
|
|
|
lea -0x20(%rdi), %r10
|
|
|
|
|
mov %rdi, %r11
|
|
|
|
|
vmovdqu 0x40(%rsi), %xmm9
|
|
|
|
|
vmovdqu 0x50(%rsi), %xmm10
|
|
|
|
|
and $0x1f, %r11
|
|
|
|
|
vmovdqu 0x60(%rsi), %xmm11
|
|
|
|
|
vmovdqu 0x70(%rsi), %xmm12
|
|
|
|
|
xor %r11, %rdi
|
|
|
|
|
add %rdx, %rsi
|
|
|
|
|
vmovdqu -0x20(%rsi), %ymm4
|
|
|
|
|
sub %r11, %rsi
|
|
|
|
|
sub %r11, %rdx
|
|
|
|
|
cmp %rcx, %rdx
|
|
|
|
|
ja L(gobble_big_data_bwd)
|
|
|
|
|
add $-0x80, %rdx
|
|
|
|
|
L(gobble_mem_bwd_llc):
|
|
|
|
|
vmovdqu -0x20(%rsi), %ymm0
|
|
|
|
|
vmovdqu -0x40(%rsi), %ymm1
|
|
|
|
|
vmovdqu -0x60(%rsi), %ymm2
|
|
|
|
|
vmovdqu -0x80(%rsi), %ymm3
|
|
|
|
|
lea -0x80(%rsi), %rsi
|
|
|
|
|
vmovdqa %ymm0, -0x20(%rdi)
|
|
|
|
|
vmovdqa %ymm1, -0x40(%rdi)
|
|
|
|
|
vmovdqa %ymm2, -0x60(%rdi)
|
|
|
|
|
vmovdqa %ymm3, -0x80(%rdi)
|
|
|
|
|
lea -0x80(%rdi), %rdi
|
|
|
|
|
add $-0x80, %rdx
|
|
|
|
|
jb L(gobble_mem_bwd_llc)
|
|
|
|
|
vmovdqu %ymm4, (%r10)
|
|
|
|
|
vzeroupper
|
|
|
|
|
vmovdqu %xmm5, (%rax)
|
|
|
|
|
vmovdqu %xmm6, 0x10(%rax)
|
|
|
|
|
vmovdqu %xmm7, 0x20(%rax)
|
|
|
|
|
vmovdqu %xmm8, 0x30(%rax)
|
|
|
|
|
vmovdqu %xmm9, 0x40(%rax)
|
|
|
|
|
vmovdqu %xmm10, 0x50(%rax)
|
|
|
|
|
vmovdqu %xmm11, 0x60(%rax)
|
|
|
|
|
vmovdqu %xmm12, 0x70(%rax)
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(gobble_big_data_bwd):
|
|
|
|
|
add $-0x80, %rdx
|
|
|
|
|
L(gobble_mem_bwd_loop):
|
|
|
|
|
prefetchnta -0x1c0(%rsi)
|
|
|
|
|
prefetchnta -0x280(%rsi)
|
|
|
|
|
vmovdqu -0x20(%rsi), %ymm0
|
|
|
|
|
vmovdqu -0x40(%rsi), %ymm1
|
|
|
|
|
vmovdqu -0x60(%rsi), %ymm2
|
|
|
|
|
vmovdqu -0x80(%rsi), %ymm3
|
|
|
|
|
lea -0x80(%rsi), %rsi
|
|
|
|
|
vmovntdq %ymm0, -0x20(%rdi)
|
|
|
|
|
vmovntdq %ymm1, -0x40(%rdi)
|
|
|
|
|
vmovntdq %ymm2, -0x60(%rdi)
|
|
|
|
|
vmovntdq %ymm3, -0x80(%rdi)
|
|
|
|
|
lea -0x80(%rdi), %rdi
|
|
|
|
|
add $-0x80, %rdx
|
|
|
|
|
jb L(gobble_mem_bwd_loop)
|
|
|
|
|
sfence
|
|
|
|
|
vmovdqu %ymm4, (%r10)
|
|
|
|
|
vzeroupper
|
|
|
|
|
vmovdqu %xmm5, (%rax)
|
|
|
|
|
vmovdqu %xmm6, 0x10(%rax)
|
|
|
|
|
vmovdqu %xmm7, 0x20(%rax)
|
|
|
|
|
vmovdqu %xmm8, 0x30(%rax)
|
|
|
|
|
vmovdqu %xmm9, 0x40(%rax)
|
|
|
|
|
vmovdqu %xmm10, 0x50(%rax)
|
|
|
|
|
vmovdqu %xmm11, 0x60(%rax)
|
|
|
|
|
vmovdqu %xmm12, 0x70(%rax)
|
|
|
|
|
ret
|
|
|
|
|
#endif
|
|
|
|
|
END (MEMCPY)
|
|
|
|
|
#endif
|
