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(parent: 1b968b6) | 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>
Mon, 29 Mar 2021 14:40:17 +0000 (07:40 -0700)
commit91264fe3577fe887b4860923fa6142b5274c8965
tree172c0193a4e0a6b0e695fd8e0df51f0d746dd817tree
parent1b968b6b9b3aac702ac2f133e0dd16cfdbb415eecommit | 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.
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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