From aa70d0563256b8ea053203177f756bca33b5cf37 Mon Sep 17 00:00:00 2001 From: Anton Blanchard via Libc-alpha Date: Thu, 14 May 2020 09:08:35 +1000 Subject: 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 --- sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c') 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, -- cgit v1.2.3-70-g09d2