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PowerPC: strrchr optimization for POWER7/PPC64

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This patch optimizes strrchr() for ppc64. It uses aligned memory
access along with cmpb instruction and CPU prefetch to avoid
cache misses for speed improvement.
This commit is contained in:
Rajalakshmi Srinivasaraghavan
2014-03-03 08:06:41 -06:00
committed by Adhemerval Zanella
parent 235eed8644
commit c7debbdfac
8 changed files with 389 additions and 2 deletions
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6
string/strrchr.c
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@ -19,9 +19,13 @@
#undef strrchr
#ifndef STRRCHR
# define STRRCHR strrchr
#endif
/* Find the last occurrence of C in S. */
char *
strrchr (const char *s, int c)
STRRCHR (const char *s, int c)
{
const char *found, *p;