[flang-commits] [flang] [flang][OpenMP]Add parsing and semantics support for ATOMIC COMPARE (PR #117032)

[Tom Eccles via flang-commits]

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

LGTM with the test for the TODO message added.

I don't think we have to implement all of the semantic checks now. It is useful just to be able to parse it correctly and inform the user that this feature is not yet supported.

https://github.com/llvm/llvm-project/pull/117032