#9630: compile-time performance regression (probably due to Generics) -------------------------------------+------------------------------------- Reporter: hvr | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.9 Resolution: | Keywords: deriving- | perf, Generics Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #9583, #10293, | Differential Rev(s): #13059, #10818 | Wiki Page: | -------------------------------------+------------------------------------- Changes (by dfeuer): * milestone: 8.4.1 => 8.2.1 Comment: This appears to be fixed in HEAD, but I haven't checked the 8.2 release. I checked both the reproduction in comment:22 and the Cabal module that originally triggered this. I don't know why I didn't check that before going digging through history. Whoops. I'll add a perf test case based on Edward's reproduction. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9630#comment:45 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler