diff options
| author | H.J. Lu <hongjiu.lu@intel.com> | 2009-07-02 03:39:03 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-07-02 03:39:03 -0700 |
| commit | ab6a873fe07b8ded403bc5a5ca73be5d04820d61 (patch) | |
| tree | 82c30accc8655738ef1831579a1d3c1e93270cf2 /string | |
| parent | 6cbbaa50aac809ad6e0692247876c82d58e466bf (diff) | |
SSSE3 strcpy/stpcpy for x86-64
This patch adds SSSE3 strcpy/stpcpy. I got up to 4X speed up on Core 2
and Core i7. I disabled it on Atom since SSSE3 version is slower for
shorter (<64byte) data.
Diffstat (limited to 'string')
| -rw-r--r-- | string/stpncpy.c | 15 | ||||
| -rw-r--r-- | string/strncpy.c | 9 |
2 files changed, 13 insertions, 11 deletions
diff --git a/string/stpncpy.c b/string/stpncpy.c index 164d0f1747..2ebab33d8a 100644 --- a/string/stpncpy.c +++ b/string/stpncpy.c @@ -28,17 +28,19 @@ # include <sys/types.h> #endif -#ifndef weak_alias -# define __stpncpy stpncpy +#ifndef STPNCPY +# ifdef weak_alias +# define STPNCPY __stpncpy +weak_alias (__stpncpy, stpncpy) +# else +# define STPNCPY stpncpy +# endif #endif /* Copy no more than N characters of SRC to DEST, returning the address of the terminating '\0' in DEST, if any, or else DEST + N. */ char * -__stpncpy (dest, src, n) - char *dest; - const char *src; - size_t n; +STPNCPY (char *dest, const char *src, size_t n) { char c; char *s = dest; @@ -96,5 +98,4 @@ __stpncpy (dest, src, n) } #ifdef weak_alias libc_hidden_def (__stpncpy) -weak_alias (__stpncpy, stpncpy) #endif diff --git a/string/strncpy.c b/string/strncpy.c index f32612e1cf..2274d7d31e 100644 --- a/string/strncpy.c +++ b/string/strncpy.c @@ -21,11 +21,12 @@ #undef strncpy +#ifndef STRNCPY +#define STRNCPY strncpy +#endif + char * -strncpy (s1, s2, n) - char *s1; - const char *s2; - size_t n; +STRNCPY (char *s1, const char *s2, size_t n) { reg_char c; char *s = s1; |