[GHC] #8668: SPECIALIZE silently fails to apply

[GHC]

#8668: SPECIALIZE silently fails to apply
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        Reporter:  crockeea          |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.6.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by crockeea):

 Replying to [comment:6 carter]:
 > Inlinable is known to prevent specialization from firing.  (unless my
 recollection is wrong, has something to do with the order of the relevant
 passes in ghc afaik)

 I tried removing the `INLINABLE`s, but that didn't help. I was under the
 impression that at least for auto-specialization across modules,
 `INLINABLE` is ''required''. I've also tried playing around with phase
 control (just a little) to avoid inlining/specialization order problems,
 but I couldn't get that to work either.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8668#comment:7>
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