[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:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by simonpj):

 Yes, I expect that we are reading the old interface file even if `-fforce-
 recomp` is on.  It's a bit of a corner case, but I'd be happy to see it
 fixed if someone would like to construct a patch to stop that happening,
 and it's not too painful in code terms.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8990#comment:1>
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