[GHC] #4856: Performance regression in the type checker regression for GADTs and type families

[GHC]

#4856: Performance regression in the type checker regression for GADTs and type
families
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    Reporter:  chak                     |        Owner:                              
        Type:  bug                      |       Status:  new                         
    Priority:  normal                   |    Milestone:  7.2.1                       
   Component:  Compiler (Type checker)  |      Version:  7.0.1                       
    Keywords:                           |     Testcase:                              
   Blockedby:                           |   Difficulty:                              
          Os:  Unknown/Multiple         |     Blocking:                              
Architecture:  Unknown/Multiple         |      Failure:  Compile-time performance bug
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Comment(by dimitris):

 Simon, can you check that the performance is acceptable now and better
 than
 6.12 and previous HEAD?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4856#comment:10>
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