[GHC] #1179: 20x slow down with -O or -O2

[GHC]

#1179: 20x slow down with -O or -O2
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 Reporter:  dons      |          Owner:          
     Type:  bug       |         Status:  new     
 Priority:  normal    |      Milestone:          
Component:  Compiler  |        Version:  6.6     
 Severity:  normal    |     Resolution:          
 Keywords:  slow      |     Difficulty:  Unknown 
 Testcase:            |   Architecture:  Multiple
       Os:  Linux     |  
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Comment (by kirsten):

 Looks like a dup of Ticket #1168 to me.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1179>
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