[GHC] #12776: Panic Simplifier ticks exhausted since ghc 8

[GHC]

#12776: Panic Simplifier ticks exhausted since ghc 8
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        Reporter:  sjcjoosten        |                Owner:
            Type:  bug               |               Status:  merge
        Priority:  highest           |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  crash or panic                     |  simplCore/should_compile/T12776
      Blocked By:                    |             Blocking:
 Related Tickets:  #12843 #12675     |  Differential Rev(s):
  #12789                             |
       Wiki Page:                    |
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Changes (by simonpj):

 * testcase:   => simplCore/should_compile/T12776
 * status:  new => merge


Comment:

 Big thank you to sjcjoosten for making such a tractable test case.
 THANKS!  It's great to have this  one nailed.

 Worth merging this (or the key part anyway) to 8.0.3

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12776#comment:9>
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