[PATCH] D119715: [InstCombine] Fold sub(0,and(lshr(X,C),1)) --> ashr(shl(X,(BW-1)-C),BW-1) (PR53610)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon updated this revision to Diff 408818.
RKSimon added a comment.

Add optional and(trunc(lshr(x,c)),1) support


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D119715/new/

https://reviews.llvm.org/D119715

Files:
  llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp
  llvm/test/Transforms/InstCombine/negated-bitmask.ll

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