Re: [PATCH] Don't assume it's AVX_U128_CLEAN after call_insn whose abi.mode_clobber(V4DImode) deosn't contains all SSE_REGS.

On Fri, Dec 8, 2023 at 10:17 AM liuhongt wrote: > > If the function desn't clobber any sse registers or only clobber > 128-bit part, then vzeroupper isn't issued before the function exit. > the status not CLEAN but ANY after the function. > > Also for sibling_call, it's safe to issue an

[PATCH] Don't assume it's AVX_U128_CLEAN after call_insn whose abi.mode_clobber(V4DImode) deosn't contains all SSE_REGS.

If the function desn't clobber any sse registers or only clobber 128-bit part, then vzeroupper isn't issued before the function exit. the status not CLEAN but ANY after the function. Also for sibling_call, it's safe to issue an vzeroupper. Also there could be missing vzeroupper since there's no