[llvm-branch-commits] [llvm] ValueTracking: Teach computeKnownFPClass about exp(-inf) (PR #172496)

[Jay Foad via llvm-branch-commits]

jayfoad wrote:

> If the source cannot be -inf, the result cannot be +0.

Surely exp(-999999) would be zero?

https://github.com/llvm/llvm-project/pull/172496