tree 03b2792f35b6dc230d030df0548996023ff24c1f
parent 0aad055f30d8148057a71a2f5f1cdb2d1bab2eee
author Simon Pilgrim <llvm-dev@redking.me.uk> 1758884964 +0100
committer GitHub <noreply@github.com> 1758884964 +0000
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[X86] canCreateUndefOrPoisonForTargetNode/isGuaranteedNotToBeUndefOrPoisonForTargetNode - add X86ISD::VPERMILPV handling (#160849)

X86ISD::VPERMILPV shuffles can't create undef/poison itself, allowing us to fold freeze(vpermilps(x,y)) -> vpermilps(freeze(x),freeze(y))