[GHC] #8767: Add rules involving `coerce` to the libraries

[GHC]

#8767: Add rules involving `coerce` to the libraries
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        Reporter:  nomeata                       |            Owner:
            Type:  task                          |           Status:
        Priority:  normal                        |  closed
       Component:  libraries/base                |        Milestone:  7.8.1
      Resolution:  fixed                         |          Version:
Operating System:  Unknown/Multiple              |  7.8.1-rc2
 Type of failure:  None/Unknown                  |         Keywords:
       Test Case:                                |     Architecture:
  tests/simplCore/should_run/T2110.hs            |  Unknown/Multiple
        Blocking:                                |       Difficulty:
                                                 |  Unknown
                                                 |       Blocked By:  8718
                                                 |  Related Tickets:  #2110
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Changes (by thoughtpolice):

 * status:  merge => closed
 * resolution:   => fixed


Comment:

 Ah, I see. In that case that's fine - it's strictly an optimization, so
 I'm don't really care about missing this little thing.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8767#comment:7>
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