[GHC] #5549: ~100% performance regression in HEAD compared to ghc6.12, ~22% compared to 7.0.4

[GHC]

#5549: ~100% performance regression in HEAD compared to ghc6.12, ~22% compared to
7.0.4
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    Reporter:  tomaszw  |       Owner:                         
        Type:  bug      |      Status:  new                    
    Priority:  normal   |   Component:  Compiler               
     Version:  7.3      |    Keywords:  performance regression 
    Testcase:           |   Blockedby:                         
          Os:  Linux    |    Blocking:                         
Architecture:  x86      |     Failure:  Runtime performance bug
------------------------+---------------------------------------------------

Comment(by tomaszw):

 Hey, I have retried the test on newer head (on same 32bit x86 linux box):

 The Glorious Glasgow Haskell Compilation System, version 7.3.20111013

 and my running time numbers are back to exact ghc6.12 level. Awesome!

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5549#comment:2>
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