[PATCH] D30721: [GlobalISel] Add default action for G_FNEG

[Volkan Keles via Phabricator via llvm-commits]

volkan created this revision.
Herald added subscribers: rovka, dberris.

https://reviews.llvm.org/rL297171 introduced G_FNEG for floating-point negation instruction and IRTranslator started to translate `FSUB -0.0, X` to `FNEG X`. This patch adds a default action for G_FNEG to avoid breaking existing targets.


https://reviews.llvm.org/D30721

Files:
  lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  lib/CodeGen/GlobalISel/LegalizerInfo.cpp
  test/CodeGen/AArch64/GlobalISel/legalize-fneg.mir

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