[GHC] #9718: Avoid TidyPgm predicting what CorePrep will do

[GHC]

#9718: Avoid TidyPgm predicting what CorePrep will do
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.8.3
      Resolution:                    |             Keywords:  CodeGen, CAFs
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 osa1):

 > Possible this can be refined to "-fno-code is relevant only when -fno-
 omit-iface-pragmas".

 I'm confused about this line. We currently don't have `-fno-omit-iface-
 pragmas`. Are you suggesting implementing a new flag for something and
 only adding that to the fingerprint? (instead of `-fno-code`)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9718#comment:35>
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