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(parent: 04e991f) | patch
x86-64: Add memcmp family functions with 256-bit EVEX
authorH.J. Lu <hjl.tools@gmail.com>
Fri, 5 Mar 2021 15:20:28 +0000 (07:20 -0800)
committerH.J. Lu <hjl.tools@gmail.com>
Thu, 27 Jan 2022 19:33:05 +0000 (11:33 -0800)
commit43e3ba09ece40ba4beb3d3c985190209ecc6a052
treed9b5eac2e62c5af7ccd8687163648e2ae8a4dfc3tree
parent04e991f22eeacff3e11cc9317317739adf82956acommit | diff
x86-64: Add memcmp family functions with 256-bit EVEX

Update ifunc-memcmp.h to select the function optimized with 256-bit EVEX
instructions using YMM16-YMM31 registers to avoid RTM abort with usable
AVX512VL, AVX512BW and MOVBE since VZEROUPPER isn't needed at function
exit.

(cherry picked from commit 91264fe3577fe887b4860923fa6142b5274c8965)
sysdeps/x86_64/multiarch/Makefile diff | blob | blame | history
sysdeps/x86_64/multiarch/ifunc-impl-list.c diff | blob | blame | history
sysdeps/x86_64/multiarch/ifunc-memcmp.h diff | blob | blame | history
sysdeps/x86_64/multiarch/memcmp-evex-movbe.S [new file with mode: 0644] blob
sysdeps/x86_64/multiarch/wmemcmp-evex-movbe.S [new file with mode: 0644] blob
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