[clang] [clang][OpenMP] OpenMP 6.0 updates to restrictions with order/concurrent (PR #125621)

[David Pagan via cfe-commits]

ddpagan wrote:

@alexey-bataev - question: I didn't see an approval from you but the PR says that I can merge. Did I miss something?

https://github.com/llvm/llvm-project/pull/125621