[GHC] #8990: Performance tests behave differently depending on presence of .hi file (even with -fforce-recomp)

[GHC]

#8990: Performance tests behave differently depending on presence of .hi file
(even with -fforce-recomp)
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        Reporter:  ezyang            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Test Suite        |              Version:  7.9
      Resolution:                    |             Keywords:  newcomer
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 akst):

 Hi, I was directed here from newcomers page. Just to clarify `ForceRecomp`
 is a constructor of `GeneralFlag`, and `Frorcerecomp` is actually `Opt_
 ForceRecomp` now?  Or should that be disregarded as the most recent
 suggestion on the issue is too "just remove hi files before perf tests"?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8990#comment:8>
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