[PATCH] D139930: [InstCombine] Combine ZExt (B - A) + ZExt(A) to ZExt(B)

[luxufan via Phabricator via llvm-commits]

StephenFan updated this revision to Diff 483191.
StephenFan added a comment.

1. Use new instead of builder.
2. Rename to `commute`
3. Add zext <2 x i5> to <2 x i8> test
4. Add zext i2 to i3 test
5. Add test that has uses.
6. Add negative test of commuted sub operands.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D139930/new/

https://reviews.llvm.org/D139930

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
  llvm/test/Transforms/InstCombine/add.ll

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