[GHC] #7367: float-out causes extra allocation

[GHC]

#7367: float-out causes extra allocation
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        Reporter:  wurmli            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  Research
                                     |  needed
       Component:  Compiler          |              Version:  7.6.1
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * milestone:  8.0.1 => Research needed


Comment:

 As has been discussed in this ticket, GHC could in principle do better in
 optimizing imperative code such as this. However, exactly how this should
 be done is a topic that would require research. Setting the milestone
 appropriately.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7367#comment:23>
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