[llvm] [polly] [AST] Don't merge memory locations in AliasSetTracker (PR #65731)

[Bruno De Fraine via llvm-commits]

brunodf-snps wrote:

> This looks good to me.

Thanks! I will still do a pass over the method names and comments to use "memory location" terminology.

@jdoerfert I was hoping to have this landed before the llvm-18 branch is cut (Jan 23, plus account for some days margin). Do you still have remarks?

https://github.com/llvm/llvm-project/pull/65731