#10397: Compiler performance regression 7.6 -> 7.8 in elimCommonBlocks -------------------------------------+------------------------------------- Reporter: TobyGoodwin | Owner: Type: bug | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | performance Type of failure: None/Unknown | Architecture: Blocked By: | Unknown/Multiple Related Tickets: | Test Case: see ticket | Blocking: | Differential Revisions: Phab:D892 -------------------------------------+------------------------------------- Comment (by Joachim Breitner <mail@…>): In [changeset:"c256357242ee2dd282fd0516260edccbb7617244/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="c256357242ee2dd282fd0516260edccbb7617244" Speed up elimCommonBlocks by grouping blocks also by outgoing labels This is an attempt to improve the situation described in #10397, where the linear scan of possible candidates for commoning up is far too expensive. There is (ever) more room for improvement, but this is a start. Differential Revision: https://phabricator.haskell.org/D892 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10397#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler