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

[GHC]

#8791: Use new primitive bitwise operations on Int in Data.Bits
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       Reporter:  cdk               |             Owner:
           Type:  task              |            Status:  new
       Priority:  normal            |         Milestone:  7.8.1
      Component:  libraries/base    |           Version:  7.6.3
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:  7689              |
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 New primitive bitwise primops have been added (`andI#`, `orI#`, etc). They
 should be used in the `Int` instance of `Data.Bits` to avoid `I#
 (word2Int# (int2Word# ...))` conversions.

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