[GHC] #4951: Performance regression 7.0.1 -> 7.0.1.20110201

[GHC]

#4951: Performance regression 7.0.1 -> 7.0.1.20110201
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  Reporter:  simonmar                 |          Owner:  simonpj         
      Type:  bug                      |         Status:  new             
  Priority:  highest                  |      Milestone:  7.0.2           
 Component:  Compiler                 |        Version:  7.0.1           
Resolution:                           |       Keywords:                  
  Testcase:                           |      Blockedby:                  
Difficulty:                           |             Os:  Unknown/Multiple
  Blocking:                           |   Architecture:  Unknown/Multiple
   Failure:  Runtime performance bug  |  
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Comment(by simonmar):

 On my phone so apologies for the terse response. The accounting in head is
 slightly different. For now I think we should concentrate on the
 regressions between 7.0.1 and 7.0.2, worry about head regressions later.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4951#comment:9>
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