[GHC] #11731: Simplifier: Inlining trivial let can lose sharing

[GHC]

#11731: Simplifier: Inlining trivial let can lose sharing
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        Reporter:  nomeata           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 > it seems that the used-once information is not attached to the
 occurrence of `sc_s49J`

 Ha, well, that's not very cool.   I bet it is easily fixed.  Just need to
 annotate the binders of the worker, perhaps.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11731#comment:9>
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