[GHC] #2439: Missed optimisation with dictionaries and loops

[GHC]

#2439: Missed optimisation with dictionaries and loops
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    Reporter:  rl                |        Owner:  simonpj                
        Type:  bug               |       Status:  new                    
    Priority:  low               |    Milestone:  6.14.1                 
   Component:  Compiler          |      Version:  6.9                    
    Keywords:                    |   Difficulty:  Unknown                
          Os:  Unknown/Multiple  |     Testcase:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Changes (by kfrdbs):

 * cc: kfrdbs@… (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2439#comment:11>
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