From 6c6ab1fc49d524ab1892cb20ee74352ace0b8034 Mon Sep 17 00:00:00 2001 From: Rajalakshmi Srinivasaraghavan Date: Tue, 18 Apr 2017 11:28:56 +0530 Subject: 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. --- sysdeps/powerpc/powerpc64/multiarch/strrchr.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'sysdeps/powerpc/powerpc64/multiarch/strrchr.c') 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); -- cgit v1.2.3