[GHC] #7561: Unnecessary Heap Allocations - Slow Performance

[GHC]

#7561: Unnecessary Heap Allocations - Slow Performance
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  Reporter:  wurmli                   |          Owner:                
      Type:  bug                      |         Status:  closed        
  Priority:  normal                   |      Milestone:  7.8.1         
 Component:  Compiler                 |        Version:  7.6.1         
Resolution:  duplicate                |       Keywords:                
        Os:  Linux                    |   Architecture:  x86_64 (amd64)
   Failure:  Runtime performance bug  |     Difficulty:  Unknown       
  Testcase:                           |      Blockedby:                
  Blocking:                           |        Related:                
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Changes (by simonmar):

  * status:  new => closed
  * resolution:  => duplicate


Comment:

 So I expect that profiling isn't applying the state hack (perhaps the cost
 centres get in the way).  Therefore I'll close this as a dup, but we
 should bear in mind the state hack is biting us in subtle and unexpected
 ways (e.g. big performance differences with profiling).

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7561#comment:10>
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