#9961: compile-time performance regression compiling genprimcode -------------------------------------+------------------------------------- Reporter: hvr | Owner: simonpj Type: bug | Status: new Priority: highest | Milestone: 7.10.1 Component: Compiler | Version: 7.10.1-rc1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by scpmw): Turns out that this might have been my fault anyway. Background here is that CSE needs to strip ticks from expressions fairly often, and `stripTicks` was not particularly efficient at it. The attached patch should restore acceptable performance. I also added a performance test - this is fairly easy to reproduce. (For the cost-centre issue mentioned above, see Phabricator D616). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9961#comment:14 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler