[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:  Unknown/Multiple  |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  12915 14226       |  Differential Rev(s):  Phab:D4417
       Wiki Page:                    |
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Comment (by simonmar):

 Should we back out the D4417 until we can fix this, @michalt?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14989#comment:8>
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