[GHC] #5129: "evaluate" optimized away

[GHC]

#5129: "evaluate" optimized away
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        Reporter:  dons              |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.2
       Component:  Compiler          |              Version:  7.0.3
      Resolution:  fixed             |             Keywords:  seq, evaluate
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13930            |  Differential Rev(s):  Phab:D615,
       Wiki Page:                    |  Phab:D4514
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Comment (by bgamari):

 George, indeed we do. Alp has recently been working on cleaning up the
 `./validate --slow` output (#14890) so we can run it during CI.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5129#comment:41>
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