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| author | Anton Blanchard via Libc-alpha <libc-alpha@sourceware.org> | 2020-05-14 09:08:35 +1000 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-05-18 08:26:22 -0500 |
| commit | aa70d0563256b8ea053203177f756bca33b5cf37 (patch) | |
| tree | 152631b5f088b02e3a42f3e1f7defe63cefe33dd /sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | |
| parent | 39037048502d52ab6422c18f2d178d6228d2c7b9 (diff) | |
| download | glibc-aa70d0563256b8ea053203177f756bca33b5cf37.tar.gz glibc-aa70d0563256b8ea053203177f756bca33b5cf37.tar.xz glibc-aa70d0563256b8ea053203177f756bca33b5cf37.zip | |
powerpc: Optimized stpcpy for POWER9
Add stpcpy support to the POWER9 strcpy. This is up to 40% faster on
small strings and up to 90% faster on long relatively unaligned strings,
compared to the POWER8 version. A few examples:
__stpcpy_power9 __stpcpy_power8
Length 20, alignments in bytes 4/ 4: 2.58246 4.8788
Length 1024, alignments in bytes 1/ 6: 24.8186 47.8528
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c index ad11ede20e..8021d8d8fa 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c +++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c @@ -98,6 +98,10 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, /* Support sysdeps/powerpc/powerpc64/multiarch/stpcpy.c. */ IFUNC_IMPL (i, name, stpcpy, +#ifdef __LITTLE_ENDIAN__ + IFUNC_IMPL_ADD (array, i, strncmp, hwcap2 & PPC_FEATURE2_ARCH_3_00, + __stpcpy_power9) +#endif IFUNC_IMPL_ADD (array, i, stpcpy, hwcap2 & PPC_FEATURE2_ARCH_2_07, __stpcpy_power8) IFUNC_IMPL_ADD (array, i, stpcpy, hwcap & PPC_FEATURE_HAS_VSX, |