[GHC] #7803: Superclass methods are left unspecialized

[GHC]

#7803: Superclass methods are left unspecialized
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Reporter:  akio                          |          Owner:                  
    Type:  bug                           |         Status:  new             
Priority:  normal                        |      Component:  Compiler        
 Version:  7.6.2                         |       Keywords:                  
      Os:  Unknown/Multiple              |   Architecture:  Unknown/Multiple
 Failure:  Compile-time performance bug  |      Blockedby:                  
Blocking:                                |        Related:                  
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Comment(by akio):

 This particular test case needs !ConstraintKinds but I found that the
 general problem can be reproduced without it. I can try to make a test
 case that doesn't use !ConstraintKinds if that seems useful.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7803#comment:1>
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