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

[Sameer Sahasrabuddhe via llvm-commits]

https://github.com/ssahasra approved this pull request.

Looks good to me, with one small whitespace issue to be fixed before submitting. Also, please wait at least one day for other reviewers to comment.

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