[GHC] #10549: floatExpr tick break<2>

[GHC]

#10549: floatExpr tick break<2>
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        Reporter:  NeilMitchell      |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by scpmw):

 This looks almost exactly like #10052. The gist of the discussion was that
 it is undefined to try to run optimisation passes such as `FloatIn` on a
 program with breakpoints.

 So the question here is why `runhaskell` ends up running optimisations,
 especially after Austin's fix...

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10549#comment:2>
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