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SSE4.2 strstr/strcasestr for x86-64.

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This patch implements SSE4.2 strstr/strcasestr, using Knuth-Morris-Pratt
string searching algorithm.
This commit is contained in:
H.J. Lu
2009-07-20 21:06:50 -07:00
committed by Ulrich Drepper
parent 63fbc91bec
commit 2b7a8664fa
8 changed files with 551 additions and 5 deletions
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10
string/strcasestr.c
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@ -1,5 +1,6 @@
/* Return the offset of one string within another.
Copyright (C) 1994, 1996-2000, 2004, 2008 Free Software Foundation, Inc.
Copyright (C) 1994, 1996-2000, 2004, 2008, 2009
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
@ -52,11 +53,16 @@
#undef strcasestr
#undef __strcasestr
#ifndef STRCASESTR
#define STRCASESTR __strcasestr
#endif
/* Find the first occurrence of NEEDLE in HAYSTACK, using
case-insensitive comparison. This function gives unspecified
results in multibyte locales. */
char *
__strcasestr (const char *haystack_start, const char *needle_start)
STRCASESTR (const char *haystack_start, const char *needle_start)
{
const char *haystack = haystack_start;
const char *needle = needle_start;