#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: | Phab:D4078, Phab:D4082 -------------------------------------+------------------------------------- Comment (by simonpj):
to avoid these performance problems
I would love to know what "these performance problems" actually are. The ticket description is opaque to me. Can someone offer a program that behaves badly, and an explanation of what is bad? It's hard for me to review a patch without knowing the problem that it seeks to solve. comment:9 offers two patches. Are they alternatives? Or do we need them both? Do they solve two different problems? What are those two problems. Finally, does this all have something to do with #14337? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14254#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler