[GHC] #10535: Float out causes major space leak

[GHC]

#10535: Float out causes major space leak
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        Reporter:  AlexET            |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #7367 #7206       |                Blocking:
                                     |  Differential Revisions:
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Changes (by nomeata):

 * related:   => #7367 #7206


Comment:

 Ah, right. Sounds like a case for http://arxiv.org/abs/1207.2017 :-].
 Anyways, this is a tricky problem; how could the compiler detect things
 that are cheaper to recalculate than to share?

 #7206 is also related.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10535#comment:4>
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