[PATCH] D72312: [DAGCombine] Fold the (fma -x, y, -z) to -(fma x, y, z)

[qshanz via Phabricator via llvm-commits]

steven.zhang updated this revision to Diff 236764.
steven.zhang added a comment.

Use the isNegatibleForFree/getNegatibleExpression mechanism.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72312/new/

https://reviews.llvm.org/D72312

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/PowerPC/combine-fneg.ll
  llvm/test/CodeGen/PowerPC/fma-combine.ll
  llvm/test/CodeGen/PowerPC/qpx-recipest.ll
  llvm/test/CodeGen/PowerPC/recipest.ll
  llvm/test/CodeGen/PowerPC/repeated-fp-divisors.ll

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