[GHC] #11735: Optimize coercionKind

[GHC]

#11735: Optimize coercionKind
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        Reporter:  goldfire          |                Owner:  (none)
            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:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 So the allocations are really close.  Where does the extra time go?

 Can you show mutator and GC times?  Maybe residency, and hence GC time, is
 higher?  Perhaps just an accident of the moments at which major GC
 happens.  What happens if you use use just one generation?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11735#comment:59>
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