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Commit 1a7078d1 authored by wangpc's avatar wangpc
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[DAGCombine] Mask doesn't have to be (EltSize - 1) exactly when combining rotation 

I think what we need is the least Log2(EltSize) significant bits are known to be ones.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D130251
parent 628fbbef
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