[GHC] #10649: Performance issue with unnecessary reboxing

[GHC]

#10649: Performance issue with unnecessary reboxing
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        Reporter:  pacak             |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by pacak):

 using both -funfolding-use-threshold=10000 -funfolding-creation-
 threshold=10000 - seems to help in all cases

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10649#comment:1>
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