[GHC] #6110: Data.Vector.Unboxed performance regression of 7.4.1 relative to 7.0.4

[GHC]

#6110: Data.Vector.Unboxed performance regression of 7.4.1 relative to 7.0.4
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    Reporter:  mdgabriel                      |       Owner:  pcapriotti             
        Type:  bug                            |      Status:  infoneeded             
    Priority:  high                           |   Milestone:  7.4.3                  
   Component:  Compiler                       |     Version:  7.4.1                  
    Keywords:  Vector Performance Regression  |          Os:  Linux                  
Architecture:  x86                            |     Failure:  Runtime performance bug
  Difficulty:  Unknown                        |    Testcase:                         
   Blockedby:                                 |    Blocking:                         
     Related:  #6111                          |  
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Comment(by pcapriotti):

 I do see a small difference when compiling with `-prof`, though much less
 than you reported (5.69s vs. 4.89s with 1000000000 as argument).

 Can you please post the prof files for runs with 1000000000 as argument?

 Can you also check if the difference goes away when you compile the sample
 program without `-prof`?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6110#comment:10>
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