llvm-project

c9223cdb - [flang][NFC] remove ambiguous fir::unwrapInnerType helper (#191189)

[flang][NFC] remove ambiguous fir::unwrapInnerType helper (#191189) `fir::unwrapInnerType` has the odd behavior of returning an empty type for things like i32, causing BaseBoxType::unwrapInnerType to return a null type for fir.box<i32> which was not intended. Remove the helper, no user really needed the null type behavior, replace its few usage by fir::getFortranElementType and update BaseBoxType::unwrapInnerType to do the intended behavior.