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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-03-20 15:28:07 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-03-20 19:46:13 -0500 |
| commit | 6f23d0939e9651d8ac3c77a835fb6464b35a1dc4 (patch) | |
| tree | 973400ed55f2eb85767f120cc41c33337abef187 /string | |
| parent | 8c92dfff412c20dc0c483ea68444d093a5672de0 (diff) | |
| download | glibc-6f23d0939e9651d8ac3c77a835fb6464b35a1dc4.tar.gz | |
PowerPC: optimized strpbrk for POWER7
This patch add an optimized strpbrk for POWER7 by using a different
algorithm than default implementation: it constructs a table based on
the 'accept' argument and use this table to check for any occurance on
the input string. The idea is similar as x86_64 uses.
For PowerPC some tunings were added, such as unroll loops and memory
clear using VSX instructions.
Diffstat (limited to 'string')
| -rw-r--r-- | string/strpbrk.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/string/strpbrk.c b/string/strpbrk.c index ce33b684ef..a694242161 100644 --- a/string/strpbrk.c +++ b/string/strpbrk.c @@ -15,21 +15,17 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#if defined _LIBC || defined HAVE_CONFIG_H -# include <string.h> -#endif +#include <string.h> #undef strpbrk +#ifndef STRPBRK +#define STRPBRK strpbrk +#endif + /* Find the first occurrence in S of any character in ACCEPT. */ char * -strpbrk (s, accept) - const char *s; - const char *accept; +STRPBRK (const char *s, const char *accept) { while (*s != '\0') { |