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* x86-64: Add memcmp family functions with 256-bit EVEXH.J. Lu2021-03-291-0/+4
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.