map -is:exact -package:basement -package:blaze-html -package:monoidal-containers -package:imports -package:invertible -package:filepath -package:base -package:integration package:ghc is:module

The assignment of virtual registers to stack slots
RoughMap is an approximate finite map data structure keyed on [RoughMatchTc]. This is useful when keying maps on lists of Types (e.g. an instance head).