[GHC] #11598: Cache coercion kinds and roles

[GHC]

#11598: Cache coercion kinds and roles
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        Reporter:  goldfire          |                Owner:  goldfire
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.10.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8095             |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * type:  bug => task
 * milestone:  8.2.1 =>


Comment:

 Richard, what do we want to do about this? It sounds like this approach
 didn't really work out.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11598#comment:5>
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