map -package:unordered-containers -package:containers -package:imports -package:bytestring -package:filepath -package:basement -package:conduit -package:invertible -package:os-string 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).