[GHC] #638: Patch to make Control.Monad.replicateM_ faster

[GHC]

#638: Patch to make Control.Monad.replicateM_ faster
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    Reporter:  ekarttun at cs.helsinki.fi  |        Owner:         
        Type:  task                     |       Status:  new    
    Priority:  normal                   |    Milestone:  6.8    
   Component:  libraries/base           |      Version:  6.4.1  
    Severity:  minor                    |   Resolution:         
    Keywords:  patch                    |   Difficulty:  Unknown
          Os:  Multiple                 |     Testcase:  N/A    
Architecture:  Multiple                 |  
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Comment (by simonmar):

 It looks like the existing definition of `replicateM_` should deforest.
 We should investigate whether it does, and if not, why not.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/638>
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