#7994: Make foldl into a good consumer -------------------------------------+------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by Joachim Breitner <mail@…>): In [changeset:"072259c78f77d6fe7c36755ebe0123e813c34457/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="072259c78f77d6fe7c36755ebe0123e813c34457" Use oneShot in the definition of foldl etc. This increases the chance of good code after fusing a left fold. See ticket #7994 and the new Note [Left folds via right fold] Differential Revision: https://phabricator.haskell.org/D393 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7994#comment:23> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler