[GHC] #12562: GHC panic on rebuild (idInfo r_XsTP)

[GHC]

#12562: GHC panic on rebuild (idInfo r_XsTP)
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        Reporter:  cocreature        |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mpickering):

 Yes that's right. Moritz reduced the testcase and changed the URL of the
 repository you need to clone.

 If you look at the commit history of the branch it now points to, there
 are a lot of commits removing code.

 https://github.com/cocreature/llvm-general/commits/ghc-panic

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12562#comment:10>
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