#9630: compile-time performance regression (probably due to Generics) -------------------------------------+------------------------------------- Reporter: hvr | Owner: dfeuer 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): Phab:D3656 #13059, #10818 | Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): FYI, the case that fails with tick exhaustion for (apparently) absolutely everything from 7.4 onward is [https://gist.github.com/treeowl/ca72b86ea4593e784e61b03ff28e26c7 in this gist]. Ryan says it worked fine in 7.2, but I doubt it'll be useful to try to figure out just what made that happen. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9630#comment:65 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler