[GHC] #1216: indexing 2d arrays is slow and leaky. why?

[GHC]

#1216: indexing 2d arrays is slow and leaky. why?
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    Reporter:  claus                     |        Owner:  simonpj         
        Type:  run-time performance bug  |       Status:  new             
    Priority:  normal                    |    Milestone:  6.12.1          
   Component:  Compiler                  |      Version:  6.6             
    Severity:  normal                    |   Resolution:                  
    Keywords:                            |   Difficulty:  Unknown         
    Testcase:                            |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple          |  
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Changes (by igloo):

  * milestone:  6.10.2 => 6.12.1

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1216#comment:12>
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