[llvm] [RFC] IR: Define noalias.addrspace metadata (PR #102461)

[Yaxun Liu via llvm-commits]

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

LGTM. Thanks. feels this MD could be used with other insts too, but I am OK for now.

https://github.com/llvm/llvm-project/pull/102461