[PATCH] D123029: [AArch64] Optimize patterns where AND's on same operand with multiple masks can be combined.

[Biplob Mishra via Phabricator via llvm-commits]

bipmis updated this revision to Diff 422027.
bipmis added a comment.

Adding additional simple tests to show simple scenarios where this optimization will be useful.

Also reduced the code needed to implement it. There are some some additional code sections to maintain the natural ordering of the operands. Also all possible operand ordering has been handled. This is to target a generic implementation.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D123029/new/

https://reviews.llvm.org/D123029

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/AArch64/arm64-rev.ll

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