[GHC] #8791: Use new primitive bitwise operations for Int# in Data.Bits

[GHC]

#8791: Use new primitive bitwise operations for Int# in Data.Bits
-------------------------------+-------------------------------------------
        Reporter:  cdk         |            Owner:  cdk
            Type:  feature     |           Status:  merge
  request                      |        Milestone:  7.8.1
        Priority:  normal      |          Version:  7.6.3
       Component:              |         Keywords:
  libraries/base               |     Architecture:  Unknown/Multiple
      Resolution:              |       Difficulty:  Easy (less than 1 hour)
Operating System:              |       Blocked By:
  Unknown/Multiple             |  Related Tickets:  #7689
 Type of failure:              |
  None/Unknown                 |
       Test Case:              |
        Blocking:              |
-------------------------------+-------------------------------------------
Changes (by hvr):

 * status:  patch => merge
 * difficulty:  Unknown => Easy (less than 1 hour)
 * type:  task => feature request
 * related:  7689 => #7689


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:4>
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