[GHC] #14206: Add bit deposit and bit extraction primops

[GHC]

#14206: Add bit deposit and bit extraction primops
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        Reporter:  newhoggy          |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Yes, let's follow gcc. However, for better or worse GHC uses `-f` flags
 for machine characteristics (although perhaps this should change in the
 long-term). Perhaps just use `-fbmi2`?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14206#comment:6>
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