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| author | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2017-04-13 11:29:20 +0530 |
|---|---|---|
| committer | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2017-04-13 11:29:20 +0530 |
| commit | 249dcdb71b79e4c488a46c9027e0014c0bc27044 (patch) | |
| tree | a14c36ab652bb3d0bf47cac89205b57ae99793c9 /sysdeps/powerpc/powerpc64/multiarch/strncat.c | |
| parent | 158d5fa0e1906e7810bdc6ecb7bf598dcc3cd17d (diff) | |
| download | glibc-249dcdb71b79e4c488a46c9027e0014c0bc27044.tar.gz glibc-249dcdb71b79e4c488a46c9027e0014c0bc27044.tar.xz glibc-249dcdb71b79e4c488a46c9027e0014c0bc27044.zip | |
powerpc: Optimized strncat for POWER8
With new optimized strnlen for POWER8 [1], this patch adds strncat for power8 to make use of optimized strlen and strnlen. This is faster than POWER7 current implementation for larger strings. Tested on powerpc64 and powerpc64le. [1] https://sourceware.org/ml/libc-alpha/2017-03/msg00491.html * sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines): Add strncat-power8. * sysdeps/powerpc/powerpc64/multiarch/strncat.c (strncat): Add __strncat_power8 to ifunc list. * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c (strncat): Add __strncat_power8 to list of strncat functions. * sysdeps/powerpc/powerpc64/multiarch/strncat-power8.c: New file.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/strncat.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/strncat.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncat.c b/sysdeps/powerpc/powerpc64/multiarch/strncat.c index 1aa5c11ea4..ba3fe5cac4 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/strncat.c +++ b/sysdeps/powerpc/powerpc64/multiarch/strncat.c @@ -23,9 +23,12 @@ extern __typeof (strncat) __strncat_ppc attribute_hidden; extern __typeof (strncat) __strncat_power7 attribute_hidden; +extern __typeof (strncat) __strncat_power8 attribute_hidden; libc_ifunc (strncat, - (hwcap & PPC_FEATURE_HAS_VSX) + (hwcap & PPC_FEATURE2_ARCH_2_07) + ? __strncat_power8 + : (hwcap & PPC_FEATURE_HAS_VSX) ? __strncat_power7 : __strncat_ppc); #endif |