[GHC] #2289: Needless reboxing of values when returning from a tight loop

[GHC]

#2289: Needless reboxing of values when returning from a tight loop
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    Reporter:  dons                        |        Owner:                  
        Type:  run-time performance bug    |       Status:  new             
    Priority:  normal                      |    Milestone:  6.12 branch     
   Component:  Compiler                    |      Version:  6.8.2           
    Severity:  normal                      |   Resolution:                  
    Keywords:  boxing, loops, performance  |   Difficulty:  Unknown         
    Testcase:                              |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple            |  
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Changes (by igloo):

  * milestone:  6.10 branch => 6.12 branch

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2289#comment:14>
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