[PATCH] D151939: InstCombine: Recognize fneg(fabs) as bitcasted integer

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: foad, jcranmer-intel, spatel, aarzee, scanon, majnemer, mehdi_amini, nikic, andrew.w.kaylor, sepavloff, resistor, efriedma.
Herald added subscribers: StephenFan, hiraditya.
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arsenm requested review of this revision.
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Technically increases the number of instructions if the
result isn't cast back to float. Even in this case it's
still probably a better canonical form since it enables FP value
tracking.


https://reviews.llvm.org/D151939

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/fneg-fabs-as-int.ll

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