#11735: Optimize coercionKind -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 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 simonpj): You don't need to propagate the change into `IfaceCoercion`: it's just a cache, so you can recompute it when turning `IfaceNthCo` into `NthCo`. On the whole I think it'd be better not to change `IfaceCoercion`: less redundancy in the `Iface` data types. Shaving off 4 seconds is fantastic. Take it! Also: * Yes `CoreTidy` is worth looking into * But also so is `simplCast`. See comment:10. '''Richard''' I need your help! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11735#comment:28 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler