#9669: Long compile time/high memory usage for modules with many deriving clauses -------------------------------------+------------------------------------- Reporter: snoyberg | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Compile-time | (amd64) performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by thoughtpolice): I've attached a quick profile from looking at this, and it looks like there's still more room to do around `TidyCore`/`CorePrep` in this area. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9669#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler