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(parent: be07b3e) | patch
x86-64: Add ifunc-avx2.h functions with 256-bit EVEX
authorH.J. Lu <hjl.tools@gmail.com>
Fri, 5 Mar 2021 14:24:52 +0000 (06:24 -0800)
committerH.J. Lu <hjl.tools@gmail.com>
Thu, 27 Jan 2022 20:07:11 +0000 (12:07 -0800)
commitc671b231cf299f39be17bcb435cb19082ed2d014
tree4674daefae21724ae3b588c8ce010d1257fb3028tree
parentbe07b3e059d337aadbdcbcc20a407fa474c802dccommit | diff
x86-64: Add ifunc-avx2.h functions with 256-bit EVEX

Update ifunc-avx2.h, strchr.c, strcmp.c, strncmp.c and wcsnlen.c to
select the function optimized with 256-bit EVEX instructions using
YMM16-YMM31 registers to avoid RTM abort with usable AVX512VL, AVX512BW
and BMI2 since VZEROUPPER isn't needed at function exit.

For strcmp/strncmp, prefer AVX2 strcmp/strncmp if Prefer_AVX2_STRCMP
is set.

(cherry picked from commit 1fd8c163a83d96ace1ff78fa6bac7aee084f6f77)
24 files changed:
sysdeps/x86_64/multiarch/Makefile diff | blob | blame | history
sysdeps/x86_64/multiarch/ifunc-avx2.h diff | blob | blame | history
sysdeps/x86_64/multiarch/ifunc-impl-list.c diff | blob | blame | history
sysdeps/x86_64/multiarch/memchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/memrchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/rawmemchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strchr.c diff | blob | blame | history
sysdeps/x86_64/multiarch/strchrnul-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strcmp-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strcmp.c diff | blob | blame | history
sysdeps/x86_64/multiarch/strlen-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strncmp-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strncmp.c diff | blob | blame | history
sysdeps/x86_64/multiarch/strnlen-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/strrchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcschr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcscmp-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcslen-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcsncmp-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcsnlen-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wcsnlen.c diff | blob | blame | history
sysdeps/x86_64/multiarch/wcsrchr-evex.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wmemchr-evex.S [new file with mode: 0644] blob
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