[llvm] [AMDGPU] Propagate alias information in AMDGPULowerKernelArguments. (PR #161375)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm requested changes to this pull request.

Is this supposed to just be a baseline test? The title sounds like it should be the actual change, but that's missing? 

https://github.com/llvm/llvm-project/pull/161375