[flang-commits] [flang] [flang] Add options -W[no-]unused-dummy-argument and -W[no-]unused-variable (PR #127214)

[Tarun Prabhu via flang-commits]

tarunprabhu wrote:

> Yes here : ` -W<warning> Enable the specified warning` (like in clang)

If a user doesn't know of the existence of these warning flags, how would they find it? 

Having said that, it seems that one can't do that with `clang` either. Ideally, we should support a page like [this](https://clang.llvm.org/docs/DiagnosticsReference.html) at least, but that's separate from this PR.

https://github.com/llvm/llvm-project/pull/127214