#11568: Regression in nofib/shootout/k-nucleotide -------------------------------------+------------------------------------- Reporter: simonmar | Owner: dfeuer Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 7.10.3 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 dfeuer): I'm seeing a lot of allocation of `j2_sbYy`. It seems this is not let-no- escape because it's used in non-tail position. But every use site looks identical (modulo distinctions that at least ''shouldn't'' matter). Specifically, an application of `j2_sbYy` is case-matched, and the non-`void#` portion of the result is passed to `$j3_sbZZ`. Something must be preventing GHC from seeing that `j2_sbYy` should itself call `$j3_sbZZ`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11568#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler