map -package:vector -package:basement -package:conduit -package:case-insensitive -package:invertible -package:dense-linear-algebra -package:imports -is:exact 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).