[llvm] [AMDGPU] Introduce "amdgpu-uniform-intrinsic-combine" pass to combine uniform AMDGPU lane Intrinsics. (PR #116953)

[Pankaj Dwivedi via llvm-commits]

PankajDwivedi-25 wrote:

Ping;
@ssahasra @jayfoad @arsenm 
This work has been pending for some time. I have addressed all the review comments, including the justification for implementing it as a ModulePass.

Please review and approve if there are no further concerns.

https://github.com/llvm/llvm-project/pull/116953