#7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)? -------------------------------------+------------------------------------- Reporter: iustin | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by bgamari): I've done some testing; notes can be found here. https://github.com/bgamari/ghc-T7450 I have also attached a profile of GHC churning through a Read instance for a 1000-constructor ADT above. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7450#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler