[GHC] #14989: CBE pass 2 invalidates proc points

[GHC]

#14989: CBE pass 2 invalidates proc points
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        Reporter:  sgraf             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.5
      Resolution:                    |             Keywords:  llvm
Operating System:  Windows           |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by sgraf):

 * cc: simonmar, michalt, bgamari (added)


Comment:

 (Calling in a few people from https://phabricator.haskell.org/D4417 for
 advise)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14989#comment:5>
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