[PATCH] D143279: InstCombine: Handle folding fcmp of 0 into llvm.is.fpclass

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: foad, sepavloff, kpn, jyknight, jcranmer-intel, andrew.w.kaylor, scanon.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
arsenm requested review of this revision.
Herald added a subscriber: wdng.
Herald added a project: LLVM.

This needs to consider the denormal mode.


https://reviews.llvm.org/D143279

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/combine-is.fpclass-and-fcmp.ll
  llvm/test/Transforms/InstCombine/create-class-from-logic-fcmp.ll

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