[GHC] #12689: DataCon wrappers get in the way of rules

[GHC]

#12689: DataCon wrappers get in the way of rules
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        Reporter:  nomeata           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
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 simonpj):

 I can't see any decent way forward here except to delay inlining the
 wrapper until phase 1.

 In GHC as-is that may be fine, because it'll only apply to data-cons that
 have wrappers, which are relatively rarer.  It'd need to be documented.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12689#comment:4>
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