[PATCH] D56679: [InstCombine] Don't undo 0 - (X * Y) canonicalization when combining subs.

[Florian Hahn via Phabricator via llvm-commits]

fhahn updated this revision to Diff 181627.
fhahn added a comment.

Thanks, added check for ConstantExpr.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56679/new/

https://reviews.llvm.org/D56679

Files:
  lib/Transforms/InstCombine/InstCombineAddSub.cpp
  test/Transforms/InstCombine/mul.ll

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