#11568: Regression in nofib/shootout/k-nucleotide -------------------------------------+------------------------------------- Reporter: simonmar | Owner: dfeuer Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): According to ticky-ticky profiling, the big things being allocated (`alloc'd`) after the patch that caused the regression are `$j1` and `$j2` in `$s$wfoldMe`. Neither of these showed up in ticky-ticky before. I think `$j2` may be new after the patch, but `$j1` was there before; perhaps it was LNEed before and isn't now? I'll try to dig deeper on Sunday. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11568#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler