https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115843
--- Comment #11 from Hongyu Wang <hongyuw at gcc dot gnu.org> --- (In reply to Hongtao Liu from comment #10) > > But using kmovw for QImode mask is not correct as we don't know the value in > > gpr. Perhaps we'd consider restrict the kmovb under avx512dq only. > > Why? as long as we only care about lower 8 bits, vmovw should be fine. Ah yes, I was wrong. As long as the usage of mask did not touch those extra bits there's nothing wrong. And suppose the QI->HI conversion will use zext sematic so we can still get correct value.
