#7258: Compiling DynFlags is jolly slow -------------------------------------+------------------------------------- Reporter: simonpj | Owner: simonpj Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Resolution: | Keywords: deriving-perf 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 bgamari):
Hmmm, what do you think about having the cartesian product for a smaller cut-off size? Manipulating the sets surely also has a (large) constant factor built-in.
I actually suspected this in the past, but dfeuer did some measurements in the context of `ListSetUtils` and found that sets aren't measurably different. Don't let that stop you from quickly trying though. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7258#comment:39 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler