[GHC] #3207: readMutVar# is inlined/duplicated

[GHC]

#3207: readMutVar# is inlined/duplicated
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        Reporter:  simonmar          |                Owner:  igloo
            Type:  merge             |               Status:  closed
        Priority:  normal            |            Milestone:  6.10 branch
       Component:  Compiler          |              Version:  6.10.2
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  codeGen/should_run/3207
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 This was closed by commit 8a3ed3364fbc74b1f1b87b049737da2b251f92df, which
 made a slew of "I/O-like" primops `has-side-effects`, even though they
 were "read-only".

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3207#comment:8>
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