#12028: Large let bindings are 6x slower (since 6.12.x to 7.10.x) -------------------------------------+------------------------------------- Reporter: tommd | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Interesting, it looks like we are spending a significant amount of time (500 ms out of a 1500 ms compilation) in CodeGen on 8.0.1 despite the fact that the simplified program is only 6000 terms, 2000 types. It looks like there was a rather significant regression from 7.6 (where compilation took around 700 ms) to 7.8 (1200 ms). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12028#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler