#8095: TypeFamilies painfully slow -------------------------------------+------------------------------------- Reporter: MikeIzbicki | Owner: bgamari Type: bug | Status: new Priority: high | Milestone: 8.0.1 Component: Compiler (Type | Version: 7.6.3 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: 5321 | Differential Rev(s): -------------------------------------+------------------------------------- Comment (by bgamari): For the record, #7428 is characterized by a similar blow-up in coercions. I'm not quite sure whether it's the same cause, but it is eerily reminiscent. Disabling production of coercions is an interesting idea; I wonder how much this would actually improve compilation speed in the non-pathological cases. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8095#comment:14 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler