#13056: Deriving Foldable causes GHC to take a long time (GHC 8.0 ONLY) -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2-rc2 Resolution: | Keywords: deriving-perf Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #12234 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Ryan you are so fast! Could you add your stripped-down tests as a performance regression test? Probably redundant, but always good to check that we don't accidentally break it again. Thanks! Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13056#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler