[PATCH] D149783: [DAGCombiner] Add bswap(logic_op(bswap(x), y)) optimization

[Austin Chang via Phabricator via llvm-commits]

austin880625 updated this revision to Diff 519617.
austin880625 edited the summary of this revision.
austin880625 added a comment.
Herald added a subscriber: steven.zhang.

Add implementation of bswap(logic_op(bswap(x), bswap(y))) -> logic_op(x, y) fold
Update some comments that are not aligned with code


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149783/new/

https://reviews.llvm.org/D149783

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/combine-bswap.ll

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