[GHC] #5889: -fno-prof-count-entries leads to linking errors

[GHC]

#5889: -fno-prof-count-entries leads to linking errors
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        Reporter:  akio              |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.3
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  GHC rejects       |            Test Case:
  valid program                      |  profiling/should_compile/T5889
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by duog):

 Replying to [comment:26 osa1]:
 > > My current understanding is now that the cost-centres are, modulo
 bugs, removed when they aren't wrapping any work. I don't think we have
 any examples here of erroneous cost-centre removal, do you agree?
 >
 > Well, this ticket iself is an example of erroneous cost-centre removal,
 isn't it?

 To be more precise, I claim that there are no simplifier bugs here; all of
 the `scc`s that are removed (by the simplifier) in the examples above are
 ok to remove.  If you disagree, can you point to one above?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5889#comment:27>
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