[PATCH] D63405: GlobalISel: Don't lose fneg flags when lowering to fsub

[Matt Arsenault via Phabricator via llvm-commits]

arsenm updated this revision to Diff 205108.
arsenm added a comment.

Just preserve the original flags


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63405/new/

https://reviews.llvm.org/D63405

Files:
  lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  test/CodeGen/AMDGPU/GlobalISel/irtranslator-fast-math-flags.ll
  test/CodeGen/AMDGPU/GlobalISel/legalize-fsub.mir
  unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

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