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Commit 2cdbaca3 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] Attempt to fold MOVMSK(CMPEQ(AND(X,C1),0)) -> MOVMSK(NOT(SHL(X,C2))) 

Allows pow2 mask tests to avoid an unnecessary constant load.

Noticed while investigating how to extend MatchVectorAllZeroTest to support more allof/anyof patterns.
parent 4e3ba526
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