[llvm-branch-commits] [llvm] AMDGPU: Move fpenvIEEEMode into TTI (PR #141945)

[Pierre van Houtryve via llvm-branch-commits]

https://github.com/Pierre-vh approved this pull request.

unrelated to this patch but `KnownIEEEMode::Unknown` looks weird, maybe it should just be named `IEEEMode`?

https://github.com/llvm/llvm-project/pull/141945