#9476: Implement late lambda-lifting -------------------------------------+------------------------------------- Reporter: simonpj | Owner: nfrisby Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #8763 | Differential Rev(s): Wiki Page: LateLamLift | -------------------------------------+------------------------------------- Comment (by simonpj):
A late demand analysis run would probably detect the same.
-O2 does late demand analysis for this very reason. So presumably it doesn't catch it.
"It's not enough to look at Core alone to gauge allocation"
I agree that STG has a stronger operational model than Core. (Core is not bad, but STG is better.) But that's an ''advantage'' of doing LLF in STG, not a ''disadvantage''. Do have a go! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9476#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler