#10012: Cheap-to-compute values aren't pushed into case branches inducing unnecessary register pressure -------------------------------------+------------------------------------- Reporter: bgamari | Owner: bgamari Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Replying to [comment:8 simonpj]:
There's something wrong with the example: far from being used in both branches, `fa` and `fb` are dead bindings.
Oh dear, yes, sorry about that. I was a bit hurried in submitting. This should be fixed now. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10012#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler