[GHC] #9701: GADTs not specialized properly

[GHC]

#9701: GADTs not specialized properly
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              Reporter:  dfeuer      |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  performance bug                    |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by dfeuer):

 Replying to [comment:2 dfeuer]:
 > The algorithm therefore ignores the type arguments and focuses on the
 dictionary arguments.

 I just re-read the comment, and I see that I read it wrong. It actually
 does look at the type arguments, but then it seems to miss the opportunity
 to grab a better dictionary. I'm not sure why that is yet.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9701#comment:8>
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