#13570: CoreFVs patch makes n-body slower -------------------------------------+------------------------------------- Reporter: simonpj | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by dfeuer): Whatever's going on here looks really subtle. The simplifier dumps appear to be exactly the same, except for doing things in slighly different orders. The STG dumps are a bit harder to read, but the difference in CMM dumps is sufficiently small and confined that someone familiar with CMM might well be able to see what's going on there directly. I'll have to learn something about that pretty soon, I imagine, but I don't know it yet. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13570#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler