#14594: 2 modules / 2500LOC takes nearly 3 minutes to build -------------------------------------+------------------------------------- Reporter: schyler | Owner: dfeuer Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): I see also that there's a fair bit of type gunk going on. The signature of `gfoldl` means that the combining function will be applied at O(n) different types, each a bit bigger than the last. Some other methods are similar. I don't know if this has any performance impact in the optimizer, but it might. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14594#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler