From 72276d6e8843db6df5971b06787f0a5e39bda138 Mon Sep 17 00:00:00 2001 From: Andrew Senkevich Date: Sat, 16 Jan 2016 00:49:45 +0300 Subject: Added memcpy/memmove family optimized with AVX512 for KNL hardware. Added AVX512 implementations of memcpy, mempcpy, memmove, memcpy_chk, mempcpy_chk, memmove_chk. It shows average improvement more than 30% over AVX versions on KNL hardware (performance results in the thread ). * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Added new files. * sysdeps/x86_64/multiarch/ifunc-impl-list.c: Added new tests. * sysdeps/x86_64/multiarch/memcpy-avx512-no-vzeroupper.S: New file. * sysdeps/x86_64/multiarch/mempcpy-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memcpy.S: Added new IFUNC branch. * sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise. * sysdeps/x86_64/multiarch/memmove.c: Likewise. * sysdeps/x86_64/multiarch/memmove_chk.c: Likewise. * sysdeps/x86_64/multiarch/mempcpy.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise. --- sysdeps/x86_64/multiarch/memcpy_chk.S | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'sysdeps/x86_64/multiarch/memcpy_chk.S') diff --git a/sysdeps/x86_64/multiarch/memcpy_chk.S b/sysdeps/x86_64/multiarch/memcpy_chk.S index 6476c624f9..a0d56d40cd 100644 --- a/sysdeps/x86_64/multiarch/memcpy_chk.S +++ b/sysdeps/x86_64/multiarch/memcpy_chk.S @@ -30,7 +30,15 @@ ENTRY(__memcpy_chk) .type __memcpy_chk, @gnu_indirect_function LOAD_RTLD_GLOBAL_RO_RDX - leaq __memcpy_chk_sse2(%rip), %rax +#ifdef HAVE_AVX512_ASM_SUPPORT + HAS_ARCH_FEATURE (AVX512F_Usable) + jz 1f +# HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) +# jz 1f + leaq __memcpy_avx512_no_vzeroupper(%rip), %rax + ret +#endif +1: leaq __memcpy_chk_sse2(%rip), %rax HAS_CPU_FEATURE (SSSE3) jz 2f leaq __memcpy_chk_ssse3(%rip), %rax -- cgit 1.4.1