[llvm] [CodeGen] Treat hasOrderedMemoryRef as implying arbitrary loads or stores (PR #182000)

[Nicolai Hähnle via llvm-commits]

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

This makes sense to me.

The way I understand "ordered memory reference" is that this is a point where synchronization with another thread may happen, which is conceptually very similar to a store (since the other thread may store).

https://github.com/llvm/llvm-project/pull/182000