#13044: make it possible to apply GHC rewrite rules to class methods -------------------------------------+------------------------------------- Reporter: George | Owner: Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Description changed by bgamari: @@ -2,3 +2,4 @@ - wrote in a discussion on glasgow-haskell-users, it is too bad that we - can't use class laws as optimizations in the form of rewrite rules. In - that same thread Simon PJ referenced + wrote in a discussion on [[https://mail.haskell.org/pipermail/glasgow- + haskell-users/2016-November/026406.html|glasgow-haskell-users]], it is too + bad that we can't use class laws as optimizations in the form of rewrite + rules. In that same thread Simon PJ referenced New description: Make it possible to apply GHC rewrite rules to class methods. As Conal wrote in a discussion on [[https://mail.haskell.org/pipermail/glasgow- haskell-users/2016-November/026406.html|glasgow-haskell-users]], it is too bad that we can't use class laws as optimizations in the form of rewrite rules. In that same thread Simon PJ referenced https://ghc.haskell.org/trac/ghc/ticket/11688, especially ticket:11688#comment:7 which gives links to similar examples. ticket:10528#comment:13 gives more background. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13044#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler