[PATCH] D48754: recognize more abs pattern

[ChenZheng via Phabricator via llvm-commits]

shchenz updated this revision to Diff 153451.
shchenz added a comment.

fix Craig's comments


https://reviews.llvm.org/D48754

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/ARM/iabs.ll
  llvm/test/CodeGen/ARM/iabs64.ll
  llvm/test/CodeGen/PowerPC/iabs.ll
  llvm/test/CodeGen/PowerPC/iabs64.ll
  llvm/test/CodeGen/X86/iabs.ll

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