[llvm] AMDGPU: Add sgpr bit convert tests (PR #136112)

[via llvm-commits]

Shoreshen wrote:

> > Hi @mikaelholmen , the fix up PR has been merges, please check. Sorry again and thank you for notifying me!
> 
> Great!
> 
> I'm a little surprised that there are no comments here in this patch from failing expensive-checks build bots due to this. Now I saw the failure in downstream non-public bots instead.

Hi thanks, I'm surprised too... BTW can you double check if the case has been resolved? Since I see the latest commits are still failing expensive check........

https://github.com/llvm/llvm-project/pull/136112