[PATCH] D143264: InstCombine: Fold is.fpclass(x, fcZero) to fcmp oeq 0

[Matt Arsenault via Phabricator via llvm-commits]

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This requires the denormal mode to definitively be IEEE handling.


https://reviews.llvm.org/D143264

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
  llvm/test/Transforms/InstCombine/is_fpclass.ll

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