#13397: Optimise calls to tagToEnum# -------------------------------------+------------------------------------- Reporter: simonpj | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): In principle yes. But although +0.59% allocation in T783, say isn't important enough to prevent using is, it'd be good to know why it happened. Maybe there's something simple going wrong that would be easily fixed? Or maybe it's one of those things like "with the change, f becomes small enough to inline into g, so g becomes too big to inline at its call sites and that makes the difference". If so, fine. But it'd be good to know. I find `-ticky` lets you nail the changes really fast. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13397#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler