[GHC] #15453: Bug in opt_trans_rule in OptCoercion

[GHC]

#15453: Bug in opt_trans_rule in OptCoercion
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        Reporter:  ningning          |                Owner:  ningning
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.4.3
      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:D5018
       Wiki Page:                    |
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Comment (by goldfire):

 Great work indeed. Thanks Ningning!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15453#comment:10>
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