[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:  patch
        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):  Phab:D2064
       Wiki Page:                    |
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Comment (by nomeata):

 The change is also visible at Phab:D2064. (So much duplication of code..
 :-()

 Unfortunately, while it fixes the problem in the above test case, it does
 not yet fix the instance observed in nofib. I’m investigating...

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11731#comment:17>
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