[PATCH] D83601: [ValueTracking] fix bug in maxnum case of cannotBeOrderedLessThanZeroImpl (PR46627)

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 277587.
spatel added a comment.

Patch updated:

1. Salvage a bit more of the existing functionality by differentiating based on "SignBitOnly" (shown with the unchanged test code comments).
2. Add another test (copysign) to show a miscompile.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83601/new/

https://reviews.llvm.org/D83601

Files:
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/test/Transforms/InstCombine/copysign.ll
  llvm/test/Transforms/InstSimplify/floating-point-arithmetic.ll
  llvm/test/Transforms/InstSimplify/floating-point-compare.ll

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