[PATCH] D147879: ValueTracking: Implement computeKnownFPClass for llvm.trunc

[Joshua Cranmer via Phabricator via llvm-commits]

jcranmer-intel added a comment.

You can also propagate the normal fpclasses as well here (and positive/negative zero if both that class and the corresponding subnormal and normal class are known not to be, I think).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D147879/new/

https://reviews.llvm.org/D147879