#14281: Minor regressions from removal of non-linear behavior from simplifier -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 8.2.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Compile-time Unknown/Multiple | performance bug Test Case: | Blocked By: Blocking: | Related Tickets: #13397 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- #13379 exposed non-linear behavior simplifying certain nested function applications. Simon PJ fixed that in a1b753e8b1475659440f524b3e66dfbea31c5787, and then made an adjustment in 29d88ee173bc9b04245a33d5268dda032f5dc331. Gipeda revealed a couple of small regressions from this combination (I'm not sure which did what, but IIRC the second patch mostly fixed regressions in the first). {{{ nofib/time/cryptarithm1 time increases 4.87% from 0.513s to 0.538s nofib/size/scs code size increases 5.28% from 1224890 bytes to 1289570 bytes }}} Note that there are a few comments on #13397 relating to these regressions. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14281 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler