#13339: Arbitrarily large expressions built out of cheap primops are not floated out -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 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 simonpj): Yes, taking the size into account would be good. Floating this this out requires boxing it, and doing an eval/unbox inside the loop. When is that cheaper than a dozen in-register additions? I'm not sure. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13339#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler