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Commit c175d880 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] Add freeze(pshufd/permilps(x,imm)) -> pshufd/permilps(freeze(x),imm) folding 

Add X86 isGuaranteedNotToBeUndefOrPoisonForTargetNode / canCreateUndefOrPoisonForTargetNode overrides and add X86ISD::PSHUFD/VPERMILPI handling.
parent 480e9a9e
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