[PATCH] D139772: InstSimplify: Add basic folding of llvm.is.fpclass intrinsic

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D139772#3986454 <https://reviews.llvm.org/D139772#3986454>, @tschuett wrote:

> Are there any plans for a `Mask2Enum` function such that your code could become a switch statement?

I don't see how that would help here. Each bit test needs to be performed in sequence, it's not a simple enum mapping


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