[GHC] #10440: Float out just gets floated in

[GHC]

#10440: Float out just gets floated in
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              Reporter:  simonpj     |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Compiler    |           Version:  7.10.1
              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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 Ihe test case in comment:3 of #10370 I found that huge numbers of sub-
 expressions were getting floated to top level by float-out, and then
 inlined straight back in.

 This is a big waste of time.  Not hard to fix; this ticket is to remind
 me.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10440>
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