[llvm] [NVPTX] support packed f32 instructions for sm_100+ (PR #126337)

[Artem Belevich via llvm-commits]

Artem-B wrote:

Can you elaborate on what is the remaining issue with https://github.com/llvm/llvm-project/pull/149393 applied?

Looking at the differences from the older LLC vs the HEAD, it appears that the main difference is in how we're handling NaNs: https://godbolt.org/z/MfrYcTK5d

Yeah, that might be another issue.

https://github.com/llvm/llvm-project/pull/126337