[PATCH] D145143: [DAGCombiner] Add fold for `~x & x` -> `0`

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n updated this revision to Diff 501948.
goldstein.w.n marked an inline comment as done.
goldstein.w.n added a comment.

Use new helper + `isBitwiseNot`


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145143/new/

https://reviews.llvm.org/D145143

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/combine-and.ll
  llvm/test/CodeGen/X86/fold-masked-merge.ll
  llvm/test/CodeGen/X86/setcc-combine.ll

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