[GHC] #7647: UNPACK polymorphic fields

[GHC]

#7647: UNPACK polymorphic fields
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        Reporter:  liyang                   |            Owner:  simonpj
            Type:  feature request          |           Status:  new
        Priority:  normal                   |        Milestone:  7.10.1
       Component:  Compiler                 |          Version:  7.6.1
      Resolution:                           |         Keywords:
Operating System:  Unknown/Multiple         |     Architecture:
 Type of failure:  Runtime performance bug  |  Unknown/Multiple
       Test Case:                           |       Difficulty:  Unknown
        Blocking:                           |       Blocked By:
                                            |  Related Tickets:  3990
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Changes (by bgamari):

 * cc: bgamari@… (added)
 * milestone:  7.8.1 => 7.10.1


Comment:

 Indeed this wouldn't be nice but clearly won't happen for 7.8.1. Punting
 to 7.10.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7647#comment:4>
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