llvm-project

cfdc4c4a - Revert "[flang][OpenMP] Move lowering of ATOMIC to separate file, NFC (#144960)"

Revert "[flang][OpenMP] Move lowering of ATOMIC to separate file, NFC (#144960)" PR#144960 broke check-flang tests on Windows (x64/ARM64). This reverts commit e5559ca45f211f2cdd9c81e46935afe1cc2e22ab.