#4941: SpecConstr generates functions that do not use their arguments ---------------------------------+------------------------------------------ Reporter: simonpj | Owner: Type: task | Status: new Priority: normal | Milestone: _|_ Component: Compiler | Version: 7.0.1 Keywords: | Testcase: Blockedby: | Difficulty: Os: Unknown/Multiple | Blocking: Architecture: Unknown/Multiple | Failure: Runtime performance bug ---------------------------------+------------------------------------------
Comment(by batterseapower): I'm being particularly slow today. The issue was obvious once I looked at the simplified output rather than the tidied core - there is a non-dead function later in that letrec (go_s1gC) that has a RULE that rewrites to $sgo_s1lg. It is sort of unfortunate that this is keeping the thing it refers to alive even after core tidying, where rules cannot possibly apply any more. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4941#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs