#10491: Regression, simplifier explosion with Accelerate, cannot compile, increasing tick factor is not a workaround -------------------------------------+------------------------------------- Reporter: robertce | Owner: Type: bug | Status: new Priority: highest | Milestone: 7.10.2 Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by simonpj): Well I suggest you use `-fno-specialise` in any further investigations. It doesn't fix it, but it'll remove distracting clutter from what you see. The silent-superclass thing is not really the ''cause''. (And hence I don't think it's worth a heroic effort to port HEAD to 7.10. It certainly generates a lot more dictionaries, so perhaps there might be twice as much code as without. But you are seeing MUCH more than that! So maybe there is a bug lurking in HEAD too; it just happens that the code generated by silent superclasses in 7.10 tickles it. So the hunt goes on. Monday is a washout for me. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10491#comment:26 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler