[GHC] #5413: Add population count primop

[GHC]

#5413: Add population count primop
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    Reporter:  tibbe             |       Owner:  simonmar    
        Type:  feature request   |      Status:  patch       
    Priority:  normal            |   Component:  Compiler    
     Version:  7.2.1             |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
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Changes (by tibbe):

  * owner:  => simonmar


Comment:

 I've implemented the primops. Optionally we might want to create a small
 static library in ghc-prim containing the C fallbacks, to avoid the
 overhead of dynamic linking for these "fat machine instructions".

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5413#comment:2>
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