[GHC] #10215: Optimizer has bugs regarding handling of -0.0

[GHC]

#10215: Optimizer has bugs regarding handling of -0.0
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        Reporter:  lerkok            |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  high              |               Milestone:
       Component:  Compiler          |                 Version:  7.8.3
      Resolution:  duplicate         |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #9238             |  Differential Revisions:
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Changes (by bgamari):

 * status:  new => closed
 * resolution:   => duplicate


Comment:

 Indeed this gets turned into a `case` expression matching on a float so I
 believe thi is the same as #9238.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10215#comment:1>
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