#14254: The Binary instance for TypeRep smells a bit expensive -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: (none) Type: bug | Status: patch Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Typeable Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3998 Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): I have the feeling that `typeRepKind` is just too expensive, considering that it has to be called for `dynApply`, `funResultTy`, and deserialization. Just how bad would it be to expand the `TrApp` and `TrFun` constructors just enough to fit the result kind? Alternatively, would it make sense to add the kind representation to `Dynamic` and to the constraints on `funResultTy` and deserialization? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14254#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler