#15056: Wrappers inlined too late -------------------------------------+------------------------------------- Reporter: simonpj | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.2.2 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): The `fulsom` regression was in `Csg.calc`, which has nested join points. Several of them end up like this: {{{ join j (x :: Double) = Board (case x of { D# y -> ... }) ... in ....(j (D# v)).... }}} So the call to $j$ ends up with an explicit `(D# v)` argument, and `SpecConstr` should catch it. But alas it does not because this happens nestedly, and `SpecConstr` is worried about exponential blowup. Why is this a regression? Because something got inlined, that made a join point a bit bigger, which mean that the ''join point'' wasn't inlined. A classic inline-cascade problem. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15056#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler