#14626: No need to enter a scrutinised value -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: heisenbug Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Resolution: | Keywords: performance Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #13861 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"bd438b2d67ec8f5d8ac8472f13b3175b569951b9/ghc" bd438b2/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="bd438b2d67ec8f5d8ac8472f13b3175b569951b9" Get evaluated-ness right in the back end See Trac #14626, comment:4. We want to maintain evaluted-ness info on Ids into the code generateor for two reasons (see Note [Preserve evaluated-ness in CorePrep] in CorePrep) - DataToTag magic - Potentially using it in the codegen (this is Gabor's current work) But it was all being done very inconsistently, and actually outright wrong -- the DataToTag magic hasn't been working for years. This patch tidies it all up, with Notes to match. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14626#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler