#14068: Loopification using join points -------------------------------------+------------------------------------- Reporter: nomeata | Owner: nomeata Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: JoinPoints Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #13966 #14067 | Differential Rev(s): Phab:D3811 #14827 | Wiki Page: | -------------------------------------+------------------------------------- Comment (by nomeata): Just had a brief look, just to remind myself of the issues here, and compared the Core of `x2n1`. With `-O`, I see loopification happening (yay!) and no allocation changes (expected). But with `-O -fspec-constr`, I see the big increase that is also reported by perf.haskell.org. It might just be an unwanted side effect of me trying preventing inlining of loopification, and might go away when I release this break – but then other things happen. Well, I should test that hypothesis. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14068#comment:25 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler