[GHC] #9198: large performance regression in type checker speed in 7.8

[GHC]

#9198: large performance regression in type checker speed in 7.8
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        Reporter:  carter            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  high              |               Milestone:  7.12.1
       Component:  Compiler (Type    |                 Version:  7.8.2
  checker)                           |
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by lelf):

 * cc: lelf (added)


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9198#comment:6>
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