[llvm] [openacc][openmp] Add dialect representation for acc atomic operations (PR #65493)

[Razvan Lupusoru via llvm-commits]

razvanlupusoru wrote:

> You might even need more interfaces between these models
Agreed! There will definitely be more interfaces! I also imagine not just operation interfaces - but type interfaces too.

> In that case, would it be a good idea creating include/mlir/interfaces/OpenACCMPCommonInterfaces
Your suggestion makes sense! My main hesitation is just that it feels eventually we may share more than just interfaces. For example, utilities and ops. I don't want to move things around often - and the current home seems it can be a good home even for future expansion.

https://github.com/llvm/llvm-project/pull/65493