[PATCH] D30134: AMDGPU: Fold FP clamp as modifier bit

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In https://reviews.llvm.org/D30134#681271, @mareko wrote:

> I only know that exceptions won't occur with the clamp modifier. No idea about denormals.
>
> Also, shouldn't this handle MIN as well?


There's no practical reason to handle min. The higher level operation minnum(x, x) is folded to x in the IR, so this should only be appearing when we emit this pattern for the clamp operation, where max was arbitrarily chosen.


https://reviews.llvm.org/D30134