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| author | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2016-03-14 17:40:46 -0400 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2016-04-07 15:51:28 -0500 |
| commit | 25dba0ad054723196fb633ba5d8a463ef5cb775c (patch) | |
| tree | 03f9259662b03ea65b00bc6721afba2d47104bef /sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | |
| parent | 1d2a8245ff7bcc1d8be54f01e26c49297e446aba (diff) | |
| download | glibc-25dba0ad054723196fb633ba5d8a463ef5cb775c.tar.gz glibc-25dba0ad054723196fb633ba5d8a463ef5cb775c.tar.xz glibc-25dba0ad054723196fb633ba5d8a463ef5cb775c.zip | |
powerpc: Add optimized P8 strspn
This utilizes vectors and bitmasks. For small needle, large haystack, the performance improvement is upto 8x. For short strings (0-4B), the cost of computing the bitmask dominates, and is a tad slower.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c index 11a8215ee4..3e1f099d71 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c +++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c @@ -322,6 +322,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, IFUNC_IMPL_ADD (array, i, strcat, 1, __strcat_ppc)) + /* Support sysdeps/powerpc/powerpc64/multiarch/strspn.c. */ + IFUNC_IMPL (i, name, strspn, + IFUNC_IMPL_ADD (array, i, strspn, + hwcap2 & PPC_FEATURE2_ARCH_2_07, + __strspn_power8) + IFUNC_IMPL_ADD (array, i, strspn, 1, + __strspn_ppc)) + /* Support sysdeps/powerpc/powerpc64/multiarch/strstr.c. */ IFUNC_IMPL (i, name, strstr, IFUNC_IMPL_ADD (array, i, strstr, |