[GHC] #9599: app runs 10 times faster when compiled with profilling information than without it

[GHC]

#9599: app runs 10 times faster when compiled with profilling information than
without it
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              Reporter:  kgardas     |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.2
            Resolution:              |         Keywords:
      Operating System:  Solaris     |     Architecture:  x86
       Type of failure:  Runtime     |       Difficulty:  Unknown
  performance bug                    |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:              |
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Comment (by rwbarton):

 The presence of SCC annotations can inhibit certain optimizations; perhaps
 one of those optimizations is in fact making your non-profiled program
 much slower. I'd try building it with `-fno-full-laziness` and/or `-fno-
 state-hack`. For that matter, what is the performance like of the two
 versions with optimizations turned off completely?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9599#comment:1>
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