[PATCH] D109446: DAG: Fix incorrect folding of fmul -1 to fneg

[Matt Arsenault via Phabricator via llvm-commits]

arsenm updated this revision to Diff 372280.
arsenm added a comment.
Herald added a subscriber: nemanjai.

Use fsub instead


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109446/new/

https://reviews.llvm.org/D109446

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/AArch64/arm64-fmadd.ll
  llvm/test/CodeGen/AArch64/fp16_intrinsic_scalar_3op.ll
  llvm/test/CodeGen/AMDGPU/fneg-combines.ll
  llvm/test/CodeGen/ARM/fnegs.ll
  llvm/test/CodeGen/Hexagon/opt-fneg.ll
  llvm/test/CodeGen/PowerPC/combine-fneg.ll

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