llvm-project

b4f4af7e - [flang][OpenMP] Verify that N in -fopenmp-version=N is valid (#145725)

[flang][OpenMP] Verify that N in -fopenmp-version=N is valid (#145725) For historical versions that are unsupported, emit a warning and assume the currently default version. For values of N that are not integers or that don't correspond to any OpenMP version (old or newer), emit an error.