With the forthcoming support for pattern synonyms in TH (not for 8.0! but likely for 8.2) Given how quickly osa1 seems to be moving on unboxed sums it's entirely
#11196: TypeInType performance regressions -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: high | Milestone: 8.0.2 Component: Compiler | Version: 7.11 Resolution: | Keywords: TypeInType Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): possible that we will have proper unpacking by 8.2 (at least I have my fingers crossed). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11196#comment:15 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler