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| author | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2017-04-18 11:28:56 +0530 |
|---|---|---|
| committer | Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> | 2017-04-18 11:28:56 +0530 |
| commit | 6c6ab1fc49d524ab1892cb20ee74352ace0b8034 (patch) | |
| tree | 716e71e31d63e0b534e2ff47fe6bb8f192f81d76 /sysdeps/powerpc/powerpc64/multiarch/strrchr.c | |
| parent | 2604882cefd3281679b8177245fdebc7061b8695 (diff) | |
| download | glibc-6c6ab1fc49d524ab1892cb20ee74352ace0b8034.tar.gz glibc-6c6ab1fc49d524ab1892cb20ee74352ace0b8034.tar.xz glibc-6c6ab1fc49d524ab1892cb20ee74352ace0b8034.zip | |
powerpc64: strrchr optimization for power8
P7 code is used for <=32B strings and for > 32B vectorized loops are used. This shows as an average 25% improvement depending on the position of search character. The performance is same for shorter strings. Tested on ppc64 and ppc64le.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/strrchr.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/strrchr.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c index dc1d3d0bb7..0f94c9d6a1 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c +++ b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c @@ -25,11 +25,14 @@ extern __typeof (strrchr) __strrchr_ppc attribute_hidden; extern __typeof (strrchr) __strrchr_power7 attribute_hidden; +extern __typeof (strrchr) __strrchr_power8 attribute_hidden; #undef strrchr /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle ifunc symbol properly. */ libc_ifunc_redirected (__redirect_strrchr, strrchr, + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __strrchr_power8 : (hwcap & PPC_FEATURE_HAS_VSX) ? __strrchr_power7 : __strrchr_ppc); |