#8766: length [Integer] is twice as slow but length [Int] is 10 times faster --------------------------------------------+------------------------------ Reporter: George | Owner: nomeata Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime performance bug | Unknown/Multiple Test Case: T8755 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Changes (by nomeata): * status: new => merge * testcase: => T8755 Comment: Pushed, please merge to 7.8. If you also merge the test case (the first performance test in `libraries/base/tests` – I hope there was no good reason why there weren’t any before) you probably have to adjust the numbers, unless we also merge the call-arity analysis (which I don’t think has seen enough testing to go into a stable release). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8766#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler