[GHC] #2902: Example where ghc 6.10.1 fails to optimize recursive instance function calls

[GHC]

#2902: Example where ghc 6.10.1 fails to optimize recursive instance function
calls
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    Reporter:  Syzygies        |        Owner:                         
        Type:  bug             |       Status:  new                    
    Priority:  low             |    Milestone:  7.2.1                  
   Component:  Compiler        |      Version:  6.10.1                 
    Keywords:  class instance  |     Testcase:                         
   Blockedby:                  |   Difficulty:  Unknown                
          Os:  MacOS X         |     Blocking:                         
Architecture:  x86_64 (amd64)  |      Failure:  Runtime performance bug
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Changes (by michalt):

 * cc: michal.terepeta@… (added)


Comment:

 With current HEAD I'm getting exactly the same run-times in both cases.
 Maybe
 this was fixed by the simple arity analyser that was recently implemented?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2902#comment:8>
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