#7367: Optimiser / Linker Problem on amd64 --------------------------------------------+------------------------------ Reporter: wurmli | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Build System | Version: 7.6.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Runtime performance bug | (amd64) Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by simonpj): rwbarton: thanks. It's really helpful to nail performance regressions. However I can't see the thunk you are referring to. Could you perhaps compile with `-ddump-simpl -ddump-stg` and point to the line number of the offending thunk allocation? (Perhaps also give the command line you are using to compile, so I can see what flags you are using.) Ta. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7367#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler