diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S deleted file mode 100644 index c6606b4..0000000 --- a/sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S +++ /dev/null @@ -1,213 +0,0 @@ -/* strcmp with unaligned loads - Copyright (C) 2013-2015 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/>. */ - -#if IS_IN (libc) - -#include "sysdep.h" - -ENTRY ( __strcmp_sse2_unaligned) - movl %edi, %eax - xorl %edx, %edx - pxor %xmm7, %xmm7 - orl %esi, %eax - andl $4095, %eax - cmpl $4032, %eax - jg L(cross_page) - movdqu (%rdi), %xmm1 - movdqu (%rsi), %xmm0 - pcmpeqb %xmm1, %xmm0 - pminub %xmm1, %xmm0 - pxor %xmm1, %xmm1 - pcmpeqb %xmm1, %xmm0 - pmovmskb %xmm0, %eax - testq %rax, %rax - je L(next_48_bytes) -L(return): - bsfq %rax, %rdx - movzbl (%rdi, %rdx), %eax - movzbl (%rsi, %rdx), %edx - subl %edx, %eax - ret - - .p2align 4 -L(next_48_bytes): - movdqu 16(%rdi), %xmm6 - movdqu 16(%rsi), %xmm3 - movdqu 32(%rdi), %xmm5 - pcmpeqb %xmm6, %xmm3 - movdqu 32(%rsi), %xmm2 - pminub %xmm6, %xmm3 - pcmpeqb %xmm1, %xmm3 - movdqu 48(%rdi), %xmm4 - pcmpeqb %xmm5, %xmm2 - pmovmskb %xmm3, %edx - movdqu 48(%rsi), %xmm0 - pminub %xmm5, %xmm2 - pcmpeqb %xmm1, %xmm2 - pcmpeqb %xmm4, %xmm0 - pmovmskb %xmm2, %eax - salq $16, %rdx - pminub %xmm4, %xmm0 - pcmpeqb %xmm1, %xmm0 - salq $32, %rax - orq %rdx, %rax - pmovmskb %xmm0, %ecx - movq %rcx, %rdx - salq $48, %rdx - orq %rdx, %rax - jne L(return) -L(main_loop_header): - leaq 64(%rdi), %rdx - movl $4096, %ecx - pxor %xmm9, %xmm9 - andq $-64, %rdx - subq %rdi, %rdx - leaq (%rdi, %rdx), %rax - addq %rsi, %rdx - movq %rdx, %rsi - andl $4095, %esi - subq %rsi, %rcx - shrq $6, %rcx - movq %rcx, %rsi - jmp L(loop_start) - - .p2align 4 -L(loop): - addq $64, %rax - addq $64, %rdx -L(loop_start): - testq %rsi, %rsi - leaq -1(%rsi), %rsi - je L(loop_cross_page) -L(back_to_loop): - movdqu (%rdx), %xmm0 - movdqu 16(%rdx), %xmm1 - movdqa (%rax), %xmm2 - movdqa 16(%rax), %xmm3 - pcmpeqb %xmm2, %xmm0 - movdqu 32(%rdx), %xmm5 - pcmpeqb %xmm3, %xmm1 - pminub %xmm2, %xmm0 - movdqu 48(%rdx), %xmm6 - pminub %xmm3, %xmm1 - movdqa 32(%rax), %xmm2 - pminub %xmm1, %xmm0 - movdqa 48(%rax), %xmm3 - pcmpeqb %xmm2, %xmm5 - pcmpeqb %xmm3, %xmm6 - pminub %xmm2, %xmm5 - pminub %xmm3, %xmm6 - pminub %xmm5, %xmm0 - pminub %xmm6, %xmm0 - pcmpeqb %xmm7, %xmm0 - pmovmskb %xmm0, %ecx - testl %ecx, %ecx - je L(loop) - pcmpeqb %xmm7, %xmm5 - movdqu (%rdx), %xmm0 - pcmpeqb %xmm7, %xmm1 - movdqa (%rax), %xmm2 - pcmpeqb %xmm2, %xmm0 - pminub %xmm2, %xmm0 - pcmpeqb %xmm7, %xmm6 - pcmpeqb %xmm7, %xmm0 - pmovmskb %xmm1, %ecx - pmovmskb %xmm5, %r8d - pmovmskb %xmm0, %edi - salq $16, %rcx - salq $32, %r8 - pmovmskb %xmm6, %esi - orq %r8, %rcx - orq %rdi, %rcx - salq $48, %rsi - orq %rsi, %rcx - bsfq %rcx, %rcx - movzbl (%rax, %rcx), %eax - movzbl (%rdx, %rcx), %edx - subl %edx, %eax - ret - - .p2align 4 -L(loop_cross_page): - xor %r10, %r10 - movq %rdx, %r9 - and $63, %r9 - subq %r9, %r10 - - movdqa (%rdx, %r10), %xmm0 - movdqa 16(%rdx, %r10), %xmm1 - movdqu (%rax, %r10), %xmm2 - movdqu 16(%rax, %r10), %xmm3 - pcmpeqb %xmm2, %xmm0 - movdqa 32(%rdx, %r10), %xmm5 - pcmpeqb %xmm3, %xmm1 - pminub %xmm2, %xmm0 - movdqa 48(%rdx, %r10), %xmm6 - pminub %xmm3, %xmm1 - movdqu 32(%rax, %r10), %xmm2 - movdqu 48(%rax, %r10), %xmm3 - pcmpeqb %xmm2, %xmm5 - pcmpeqb %xmm3, %xmm6 - pminub %xmm2, %xmm5 - pminub %xmm3, %xmm6 - - pcmpeqb %xmm7, %xmm0 - pcmpeqb %xmm7, %xmm1 - pcmpeqb %xmm7, %xmm5 - pcmpeqb %xmm7, %xmm6 - - pmovmskb %xmm1, %ecx - pmovmskb %xmm5, %r8d - pmovmskb %xmm0, %edi - salq $16, %rcx - salq $32, %r8 - pmovmskb %xmm6, %esi - orq %r8, %rdi - orq %rcx, %rdi - salq $48, %rsi - orq %rsi, %rdi - movq %r9, %rcx - movq $63, %rsi - shrq %cl, %rdi - test %rdi, %rdi - je L(back_to_loop) - bsfq %rdi, %rcx - movzbl (%rax, %rcx), %eax - movzbl (%rdx, %rcx), %edx - subl %edx, %eax - ret - - .p2align 4 -L(cross_page_loop): - cmpb %cl, %al - jne L(different) - addq $1, %rdx - cmpq $64, %rdx - je L(main_loop_header) -L(cross_page): - movzbl (%rdi, %rdx), %eax - movzbl (%rsi, %rdx), %ecx - testb %al, %al - jne L(cross_page_loop) - xorl %eax, %eax -L(different): - subl %ecx, %eax - ret -END (__strcmp_sse2_unaligned) - -#endif |