[PATCH] D26602: [DAGCombiner] do not fold (fmul (fadd X, 1), Y) -> (fmad X, Y, Y) by default

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle updated this revision to Diff 79758.
nhaehnle added a comment.

Rebased on https://reviews.llvm.org/D27260.

Tentatively disable the FMAD variant unless unsafe-math is enabled. I
haven't yet checked/updated the tests, will follow up if the change in
general is agreed on.


https://reviews.llvm.org/D26602

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AMDGPU/fma-combine.ll
  test/CodeGen/X86/fma_patterns.ll
  test/CodeGen/X86/fma_patterns_wide.ll

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