#7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)? -------------------------------------+------------------------------------- Reporter: iustin | Owner: bgamari Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1012 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari <ben@…>): In [changeset:"b1726c1194f1ed35dffc83304260b3b29abd0c53/ghc" b1726c11/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="b1726c1194f1ed35dffc83304260b3b29abd0c53" Bitmap: Use foldl' instead of foldr These are producing StgWords so foldl' is the natural choice. I'm not sure how I didn't notice this when I wrote D1041. Test Plan: Validate Reviewers: austin, simonmar Reviewed By: simonmar Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2955 GHC Trac Issues: #7450 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7450#comment:34> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler