#8900: Strictness analysis regression --------------------------------------------+------------------------------ Reporter: tibbe | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.1-rc2 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 Type of failure: Runtime performance bug | (amd64) Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by simonpj): OK I have restored the old behaviour. (No need to merge.) I did a nofib run and found * No visible change in binary size * No change in allocation * Wibbles up and down in runtime but nothing consistent. (On my machine running `k-nucleotide` varies by up to 10% runtime in successive runes, for example.) So I don't think there are significant losses, and Johan definitely has a gain to get. I have not actually tried Johan's example, but perhaps Johan can? Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8900#comment:19 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler