[PATCH] D140795: [Flang] Add user option -funderscoring/-fnounderscoring to control trailing underscore added to external names

[Valentin Clement via Phabricator via cfe-commits]

clementval added a comment.

Can you also add test in `flang/test/Fir/external-mangling.fir`?


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  https://reviews.llvm.org/D140795/new/

https://reviews.llvm.org/D140795