[flang-commits] [flang] [flang] Support -gline-directives-only (PR #217132)

[Abid Qadeer via flang-commits]

https://github.com/abidh commented:

It needs a positive test where we check that DICompileUnit is generated with emissionKind set to DebugDirectivesOnly.

https://github.com/llvm/llvm-project/pull/217132