[llvm] [AMDGPU] Allocate i1 argument to SGPRs (PR #72461)

[Jun Wang via llvm-commits]

jwanggit86 wrote:

> > Thanks @arsenm What about SILowerI1Copies?
> 
> There should be no changes there. It cannot possibly have the context necessary to do anything sensible. The code there is nonsense as it is

@arsenm So how do you want to proceed?

https://github.com/llvm/llvm-project/pull/72461