[PATCH] D23764: Remove MVT:i1 xor instruction before SELECT. (Performance improvement).

[Ayman Musa via llvm-commits]

aymanmus updated this revision to Diff 69551.
aymanmus added a comment.

- Added a test for AVX512 where the improvement is significant.
- Removed the "one use" condition for the xor instruction.


https://reviews.llvm.org/D23764

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/PowerPC/select-i1-vs-i1.ll
  test/CodeGen/X86/xor-select-i1-combine.ll

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