[GHC] #6082: Program compiled with 7.4.1 runs many times slower than compiled with 7.2.2

[GHC]

#6082: Program compiled with 7.4.1 runs many times slower than compiled with 7.2.2
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  Reporter:  gchrupala                |          Owner:                  
      Type:  bug                      |         Status:  new             
  Priority:  high                     |      Milestone:  7.4.3           
 Component:  libraries (other)        |        Version:  7.4.1           
Resolution:                           |       Keywords:                  
        Os:  Unknown/Multiple         |   Architecture:  Unknown/Multiple
   Failure:  Runtime performance bug  |     Difficulty:  Unknown         
  Testcase:                           |      Blockedby:                  
  Blocking:                           |        Related:                  
--------------------------------------+-------------------------------------
Changes (by simonmar):

  * owner:  pcapriotti =>
  * status:  closed => new
  * resolution:  wontfix =>


Comment:

 On second thoughts, we don't understand why the RULE doesn't fire, because
 the `unsafeFreeze` proxy in `Data.Array.MArray` is declared `INLINE`.  Re-
 opening so we can investigate.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6082#comment:8>
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