[flang-commits] [clang] [flang] [flang] Add nsw flag to do-variable increment with a new option (PR #91579)

[Slava Zakharin via flang-commits]

https://github.com/vzakhari approved this pull request.

It looks good to me except maybe for the naming of the lowering option.  Thank you for doing this!

https://github.com/llvm/llvm-project/pull/91579