#9476: Implement late lambda-lifting -------------------------------------+------------------------------------- Reporter: simonpj | Owner: sgraf Type: feature request | Status: closed Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 7.8.2 Resolution: fixed | Keywords: LateLamLift Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #8763 #13286 | Differential Rev(s): Phab:D5224 Wiki Page: LateLamLift | -------------------------------------+------------------------------------- Comment (by simonpj):
what matters is that the sampled maximum residency for default was lower than allow-cg (192 vs. 196MB)
Interesting. So the (fairly complicated) closure-growth analysis busy us only 2% reduction in residency. That raises the question of whether the gain is worth the pain. We should explore that in the paper -- and of course measure more programs. We don't want a tricky analysis that doesn't pay its way. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9476#comment:72 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler