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| author | Ondřej Bílka <neleai@seznam.cz> | 2013-09-26 18:54:09 +0200 |
|---|---|---|
| committer | Ondřej Bílka <neleai@seznam.cz> | 2013-09-26 19:23:01 +0200 |
| commit | dc1a95c730699bdccbafa85f189b814107f409b5 (patch) | |
| tree | 6f8bbac66ed49b4f9aea952fc34442ced09200d8 /sysdeps/x86_64/multiarch/strend-sse4.S | |
| parent | 5ebbff8fd1529aec13ac4d2906c1a36f3e738519 (diff) | |
| download | glibc-dc1a95c730699bdccbafa85f189b814107f409b5.tar.gz glibc-dc1a95c730699bdccbafa85f189b814107f409b5.tar.xz glibc-dc1a95c730699bdccbafa85f189b814107f409b5.zip | |
Faster strrchr.
Diffstat (limited to 'sysdeps/x86_64/multiarch/strend-sse4.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strend-sse4.S | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/sysdeps/x86_64/multiarch/strend-sse4.S b/sysdeps/x86_64/multiarch/strend-sse4.S deleted file mode 100644 index c5a7ae28a6..0000000000 --- a/sysdeps/x86_64/multiarch/strend-sse4.S +++ /dev/null @@ -1,48 +0,0 @@ -/* Return the pointer to the end of string, using SSE4.2 - Copyright (C) 2009-2013 Free Software Foundation, Inc. - Contributed by Intel Corporation. - 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> -#include "asm-syntax.h" - - .section .text.sse4.2,"ax",@progbits -ENTRY (__strend_sse4) - pxor %xmm2, %xmm2 - movq %rdi, %rcx - andq $~15, %rdi - movdqa %xmm2, %xmm1 - pcmpeqb (%rdi), %xmm2 - orl $0xffffffff, %esi - subq %rdi, %rcx - shll %cl, %esi - pmovmskb %xmm2, %edx - andl %esi, %edx - jnz 1f - -2: pcmpistri $0x08, 16(%rdi), %xmm1 - leaq 16(%rdi), %rdi - jnz 2b - - leaq (%rdi,%rcx), %rax - ret - -1: bsfl %edx, %eax - addq %rdi, %rax - ret - -END (__strend_sse4) |