[GHC] #728: switch to compacting collection when swapping occurs

[GHC]

#728: switch to compacting collection when swapping occurs
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 Reporter:  simonmar         |          Owner:                  
     Type:  feature request  |         Status:  new             
 Priority:  normal           |      Milestone:  _|_             
Component:  Runtime System   |        Version:  6.4.1           
 Severity:  major            |     Resolution:                  
 Keywords:  compacting       |     Difficulty:  Moderate (1 day)
 Testcase:  N/A              |   Architecture:  Unknown         
       Os:  Unknown          |  
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Changes (by SamB):

  * keywords:  => compacting
 * cc: SamB (added)
  * severity:  normal => major

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/728#comment:5>
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