[PATCH] D147902: ValueTracking: Implement computeKnownFPClass for fpext

[Matt Arsenault via Phabricator via llvm-commits]

arsenm updated this revision to Diff 513890.
arsenm added a comment.

Move condition into APFloat. Take a stab at guarding against exotic formats with large mantissas, although I don't think this is a practical problem (if the precision isn't larger, should fpext even be a valid operation to perform)?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147902/new/

https://reviews.llvm.org/D147902

Files:
  llvm/include/llvm/ADT/APFloat.h
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/lib/Support/APFloat.cpp
  llvm/test/Transforms/Attributor/nofpclass-fpext.ll

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