#9136: Constant folding in Core could be better --------------------------------------------+------------------------------ Reporter: simonpj | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime performance bug | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by simonpj): You could do that in `PrelRules` too. Yes, being able to do it in source code would be cool, but it all requires more syntax, a story about what predicates are allowed, etc etc, and it is far from obvious where to stop. The advantage of `PrelRules` is that you can do anything! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9136#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler