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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/x86_64/strchr.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/x86_64/strchr.S')
-rw-r--r-- | sysdeps/x86_64/strchr.S | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/sysdeps/x86_64/strchr.S b/sysdeps/x86_64/strchr.S deleted file mode 100644 index 16c1726803..0000000000 --- a/sysdeps/x86_64/strchr.S +++ /dev/null @@ -1,187 +0,0 @@ -/* strchr (str, ch) -- Return pointer to first occurrence of CH in STR. - For AMD x86-64. - Copyright (C) 2009-2017 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> - - .text -ENTRY (strchr) - movd %esi, %xmm1 - movl %edi, %eax - andl $4095, %eax - punpcklbw %xmm1, %xmm1 - cmpl $4032, %eax - punpcklwd %xmm1, %xmm1 - pshufd $0, %xmm1, %xmm1 - jg L(cross_page) - movdqu (%rdi), %xmm0 - pxor %xmm3, %xmm3 - movdqa %xmm0, %xmm4 - pcmpeqb %xmm1, %xmm0 - pcmpeqb %xmm3, %xmm4 - por %xmm4, %xmm0 - pmovmskb %xmm0, %eax - test %eax, %eax - je L(next_48_bytes) - bsf %eax, %eax -#ifdef AS_STRCHRNUL - leaq (%rdi,%rax), %rax -#else - movl $0, %edx - leaq (%rdi,%rax), %rax - cmpb %sil, (%rax) - cmovne %rdx, %rax -#endif - ret - - .p2align 3 - L(next_48_bytes): - movdqu 16(%rdi), %xmm0 - movdqa %xmm0, %xmm4 - pcmpeqb %xmm1, %xmm0 - pcmpeqb %xmm3, %xmm4 - por %xmm4, %xmm0 - pmovmskb %xmm0, %ecx - movdqu 32(%rdi), %xmm0 - movdqa %xmm0, %xmm4 - pcmpeqb %xmm1, %xmm0 - salq $16, %rcx - pcmpeqb %xmm3, %xmm4 - por %xmm4, %xmm0 - pmovmskb %xmm0, %eax - movdqu 48(%rdi), %xmm0 - pcmpeqb %xmm0, %xmm3 - salq $32, %rax - pcmpeqb %xmm1, %xmm0 - orq %rcx, %rax - por %xmm3, %xmm0 - pmovmskb %xmm0, %ecx - salq $48, %rcx - orq %rcx, %rax - testq %rax, %rax - jne L(return) -L(loop_start): - /* We use this alignment to force loop be aligned to 8 but not - 16 bytes. This gives better sheduling on AMD processors. */ - .p2align 4 - pxor %xmm6, %xmm6 - andq $-64, %rdi - .p2align 3 -L(loop64): - addq $64, %rdi - movdqa (%rdi), %xmm5 - movdqa 16(%rdi), %xmm2 - movdqa 32(%rdi), %xmm3 - pxor %xmm1, %xmm5 - movdqa 48(%rdi), %xmm4 - pxor %xmm1, %xmm2 - pxor %xmm1, %xmm3 - pminub (%rdi), %xmm5 - pxor %xmm1, %xmm4 - pminub 16(%rdi), %xmm2 - pminub 32(%rdi), %xmm3 - pminub %xmm2, %xmm5 - pminub 48(%rdi), %xmm4 - pminub %xmm3, %xmm5 - pminub %xmm4, %xmm5 - pcmpeqb %xmm6, %xmm5 - pmovmskb %xmm5, %eax - - testl %eax, %eax - je L(loop64) - - movdqa (%rdi), %xmm5 - movdqa %xmm5, %xmm0 - pcmpeqb %xmm1, %xmm5 - pcmpeqb %xmm6, %xmm0 - por %xmm0, %xmm5 - pcmpeqb %xmm6, %xmm2 - pcmpeqb %xmm6, %xmm3 - pcmpeqb %xmm6, %xmm4 - - pmovmskb %xmm5, %ecx - pmovmskb %xmm2, %eax - salq $16, %rax - pmovmskb %xmm3, %r8d - pmovmskb %xmm4, %edx - salq $32, %r8 - orq %r8, %rax - orq %rcx, %rax - salq $48, %rdx - orq %rdx, %rax - .p2align 3 -L(return): - bsfq %rax, %rax -#ifdef AS_STRCHRNUL - leaq (%rdi,%rax), %rax -#else - movl $0, %edx - leaq (%rdi,%rax), %rax - cmpb %sil, (%rax) - cmovne %rdx, %rax -#endif - ret - .p2align 4 - -L(cross_page): - movq %rdi, %rdx - pxor %xmm2, %xmm2 - andq $-64, %rdx - movdqa %xmm1, %xmm0 - movdqa (%rdx), %xmm3 - movdqa %xmm3, %xmm4 - pcmpeqb %xmm1, %xmm3 - pcmpeqb %xmm2, %xmm4 - por %xmm4, %xmm3 - pmovmskb %xmm3, %r8d - movdqa 16(%rdx), %xmm3 - movdqa %xmm3, %xmm4 - pcmpeqb %xmm1, %xmm3 - pcmpeqb %xmm2, %xmm4 - por %xmm4, %xmm3 - pmovmskb %xmm3, %eax - movdqa 32(%rdx), %xmm3 - movdqa %xmm3, %xmm4 - pcmpeqb %xmm1, %xmm3 - salq $16, %rax - pcmpeqb %xmm2, %xmm4 - por %xmm4, %xmm3 - pmovmskb %xmm3, %r9d - movdqa 48(%rdx), %xmm3 - pcmpeqb %xmm3, %xmm2 - salq $32, %r9 - pcmpeqb %xmm3, %xmm0 - orq %r9, %rax - orq %r8, %rax - por %xmm2, %xmm0 - pmovmskb %xmm0, %ecx - salq $48, %rcx - orq %rcx, %rax - movl %edi, %ecx - subb %dl, %cl - shrq %cl, %rax - testq %rax, %rax - jne L(return) - jmp L(loop_start) - -END (strchr) - -#ifndef AS_STRCHRNUL -weak_alias (strchr, index) -libc_hidden_builtin_def (strchr) -#endif |