[PATCH] D39282: DAG: Fold fma (fneg x), K, y -> fma x, -K, y

[Matt Arsenault via Phabricator via llvm-commits]

arsenm updated this revision to Diff 120222.
arsenm added a comment.

Fix PPC test failures


https://reviews.llvm.org/D39282

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AMDGPU/fma-combine.ll
  test/CodeGen/AMDGPU/fmuladd.f16.ll
  test/CodeGen/AMDGPU/fmuladd.f32.ll

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