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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/stpcpy.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/stpcpy.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/stpcpy.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c index 0a63c8f51a..68e1e648c3 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c +++ b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c @@ -26,13 +26,20 @@ extern __typeof (__stpcpy) __stpcpy_ppc attribute_hidden; extern __typeof (__stpcpy) __stpcpy_power7 attribute_hidden; extern __typeof (__stpcpy) __stpcpy_power8 attribute_hidden; +# ifdef __LITTLE_ENDIAN__ +extern __typeof (__stpcpy) __stpcpy_power9 attribute_hidden; +# endif libc_ifunc_hidden (__stpcpy, __stpcpy, - (hwcap2 & PPC_FEATURE2_ARCH_2_07) - ? __stpcpy_power8 - : (hwcap & PPC_FEATURE_HAS_VSX) - ? __stpcpy_power7 - : __stpcpy_ppc); +# ifdef __LITTLE_ENDIAN__ + (hwcap2 & PPC_FEATURE2_ARCH_3_00) + ? __stpcpy_power9 : +# endif + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __stpcpy_power8 + : (hwcap & PPC_FEATURE_HAS_VSX) + ? __stpcpy_power7 + : __stpcpy_ppc); weak_alias (__stpcpy, stpcpy) libc_hidden_def (__stpcpy) |