[GHC] #10825: Poor performance of optimized code.

[GHC]

#10825: Poor performance of optimized code.
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        Reporter:  AndriusS          |                   Owner:  bgamari
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #8814, #8835      |  Differential Revisions:
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Comment (by AndriusS):

 Yes, with `-fno-state-hack` everything works fine. This is probably a
 duplicate of #1168.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10825#comment:3>
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