[PATCH] D138542: [InstSimplify] Use dominate condtion to simplify xor/sub

[chenglin.bi via Phabricator via llvm-commits]

bcl5980 added a comment.

I will commit the test as baseline if reviewers look good for the test.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138542/new/

https://reviews.llvm.org/D138542