[flang-commits] [flang] [flang][OpenMP] Move lowering of ATOMIC to separate file, NFC (PR #144960)

[Krzysztof Parzyszek via flang-commits]

kparzysz wrote:

Lowering of the atomic construct is essentially independent from the rest of lowering, plus there is more code coming to address pending issues/requests.

https://github.com/llvm/llvm-project/pull/144960