Commit message (Collapse) | Author | Age | Files | Lines | |
---|---|---|---|---|---|
* | x86-64: Add AVX optimized string/memory functions for RTM | H.J. Lu | 2021-03-29 | 1 | -0/+12 |
Since VZEROUPPER triggers RTM abort while VZEROALL won't, select AVX optimized string/memory functions with xtest jz 1f vzeroall ret 1: vzeroupper ret at function exit on processors with usable RTM, but without 256-bit EVEX instructions to avoid VZEROUPPER inside a transactionally executing RTM region. |