Re: [GHC] #9536: Implement foldr/cons/build

#9536: Implement foldr/cons/build -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: task | Status: patch Priority: normal | Milestone: 7.8.4 Component: | Version: 7.9 libraries/base | Keywords: fusion Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Easy (less than 1 Unknown/Multiple | hour) Type of failure: | Blocked By: None/Unknown | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by Joachim Breitner ): In [changeset:"789321098f86fd3c4483b24372f8938f89b12312/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="789321098f86fd3c4483b24372f8938f89b12312" Fusion rule for "foldr k z (x:build g)" There seem to be various issues with general fold/cons and even cons/build rules, but it seems pretty clear to me that the simple fold/cons/build rule is a good idea. It doesn't do much for nofib allocation, but it seems to improve some other analyses and speed several benchmarks up. Implements #9536. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9536#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler