[PATCH] D28846: DAG: Fold fneg into compare with constant into the constant

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
Herald added a reviewer: tstellarAMD.
Herald added subscribers: nhaehnle, wdng.

fcmp (fneg x), c, pred -> fcmp x, -c, (swap pred)

      

InstCombine already does this.


https://reviews.llvm.org/D28846

Files:
  lib/CodeGen/SelectionDAG/TargetLowering.cpp
  test/CodeGen/AMDGPU/setcc-fneg-constant.ll
  test/CodeGen/SystemZ/fp-cmp-05.ll
  test/CodeGen/XCore/fneg.ll

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