[GHC] #13468: GHC stubbornly produces dead code for empty case with type family

[GHC]

#13468: GHC stubbornly produces dead code for empty case with type family
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        Reporter:  dfeuer            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
                                     |  simplCore/should_compile/T13468
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * milestone:  8.4.1 => 8.2.1


Comment:

 I ended up merging this to 8.2 (09249f93089517ace8aae6d0652716f6fac18e3e)
 to simplify merging of #13379.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13468#comment:4>
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