#14240: CSE’ing w/w’ed code regresses program runtime -------------------------------------+------------------------------------- Reporter: nomeata | Owner: nomeata Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 8.2.1 Resolution: invalid | 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: | -------------------------------------+------------------------------------- Changes (by nomeata): * status: new => closed * resolution: => invalid Comment: changeset:28a115e/ghc “fixed” the `lambda` regression. I conclude that this is a layout issue… I really wish we could get a better handle on these things. Whenever the RTS is touched, even by completely minuscule changes, a few benchmarks go up or down by 3 to 5 runtime. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14240#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler