[GHC] #5152: GHC generates poor code for large 64-bit literals

[GHC]

#5152: GHC generates poor code for large 64-bit literals
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    Reporter:  bos               |        Owner:  igloo                  
        Type:  bug               |       Status:  new                    
    Priority:  normal            |    Milestone:  7.4.1                  
   Component:  Compiler          |      Version:  7.0.3                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:                         
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Comment(by simonpj):

 c.f all the stuff in #5284.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5152#comment:5>
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