[PATCH] D147902: ValueTracking: Implement computeKnownFPClass for fpext

[Krzysztof Drewniak via Phabricator via llvm-commits]

krzysz00 added a comment.

Nine of the really exotic formats I know (the FP8 series) have type-level representations in LLVM unless I missed something ... and for them it's fptrunc I'd be worried about, not fpext

But also, I don't think the "abnormals extend to normals" property is true for `bfloat` -> `float`, since a bfloat is an IEEE float with the bottom 16 bits of the mantissa cut off.


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  https://reviews.llvm.org/D147902/new/

https://reviews.llvm.org/D147902