f package:ghc

Takes a ModuleName and possibly a UnitId, and consults the filesystem and package database to find the corresponding Module, using the algorithm that is used for an import declaration.
Arg count for lambda floating See FloatOutSwitches
Enable FMA instructions.
the -ffrontend-opt flags given on the command line, in *reverse* order that they're specified on the command line.
Extract the function result type and panic if that is not possible