[llvm] [IPSCCP] Don't replace with constant if Value is noalias ptr or derivatives (PR #154522)

[via llvm-commits]

choikwa wrote:

I think with the trunk the only theoretical issue other than AMDGPU backend would be if IPSCCP replaced what would have been asymmetric scoped-noalias relation and stopped producing NoAlias result (but not sure how to generate such test or how likely that is).

https://github.com/llvm/llvm-project/pull/154522