#9781: Make list monad operations fuse -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: dfeuer Type: task | Status: new Priority: normal | Milestone: 7.10.1 Component: Core | Version: 7.9 Libraries | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Runtime | Related Tickets: performance bug | Test Case: | Blocking: | Differential Revisions: Phab:D455 | -------------------------------------+------------------------------------- Comment (by ekmett): I have no issues with improving fusion for do sugared lists, the question is if it is possible to achieve this change with just a libraries fix or if you need to go into the compiler. There is a lot of crazy code down in the list comprehension module that gets used to make lists fast there. It isn't clear to me how we'd lean on it. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9781#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler