#1600: Optimisation: CPR the results of IO -------------------------------------+------------------------------------- Reporter: simonmar | Owner: (none) Type: task | Status: new Priority: lowest | Milestone: Component: Compiler | Version: 6.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #8598 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"900cfdc2700ad9e8c7a12dd25bb0396e5e7651df/ghc" 900cfdc2/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="900cfdc2700ad9e8c7a12dd25bb0396e5e7651df" Do not generate a data-con wrapper for !Int# See Note [Data con wrappers and unlifted types] in MkId. We were being totally stupid! See Trac #1600 comment:66 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1600#comment:67> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler