#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 (amd64) Type of failure: Compile- | Difficulty: Unknown time performance bug | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by simonpj): It's `-fprof-auto`. Manual page [http://www.haskell.org/ghc/docs/latest/html/users_guide/flag- reference.html#idp14739632 here]. Sorry was on train. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9669#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler