[GHC] #4965: 60% performance regression in continuation-heavy code between 6.12 and 7

[GHC]

#4965: 60% performance regression in continuation-heavy code between 6.12 and 7
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    Reporter:  bos               |        Owner:                         
        Type:  bug               |       Status:  new                    
    Priority:  normal            |    Milestone:                         
   Component:  Compiler          |      Version:  7.0.1                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:                         
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
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Comment(by tibbe):

 You might want to try on a 32-bit machine as well. Lennart noticed some
 big 32 vs 64-bit difference in other continuation heavy code
 (Data.Binary): http://lennartkolmodin.blogspot.com/2011/02/binary-by-
 numbers.html

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4965#comment:6>
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