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

[GHC]

#8791: Use new primitive bitwise operations for Int# in Data.Bits
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        Reporter:  cdk               |            Owner:  cdk
            Type:  task              |           Status:  patch
        Priority:  normal            |        Milestone:  7.8.1
       Component:  libraries/base    |          Version:  7.6.3
      Resolution:                    |         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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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"0fc4fb5477d3ca22a8b6894db5b1112b9badfdc4/base"]:
 {{{
 #!CommitTicketReference repository="base"
 revision="0fc4fb5477d3ca22a8b6894db5b1112b9badfdc4"
 Use new bitwise Int# primops in Data.Bits (re #8791)

 The new primops (see also #7689) allow to optimize
 `instance Bits Int` by allowing to operate directly on Int#
 instead of having to convert to Word# and back to Int# again.

 Authored-by: Chris Dueck <crdueck at uwaterloo.ca>
 Signed-off-by: Herbert Valerio Riedel <hvr at gnu.org>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8791#comment:3>
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