[GHC] #13376: GHC fails to specialize a pair of polymorphic INLINABLE functions

[GHC]

#13376: GHC fails to specialize a pair of polymorphic INLINABLE functions
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        Reporter:  jberryman         |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:  Inlining
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8668, #5835,     |  Differential Rev(s):
  #12791                             |
       Wiki Page:                    |
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Comment (by jberryman):

 Just a note that I verified the example I posted here is fixed in 8.2, as
 well as jmoy's example I linked to in the first paragraph of my report.
 However for the latter I encountered what I thought was a weird issue
 which I don't have time to look into further right now:
 https://ghc.haskell.org/trac/ghc/ticket/13873

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13376#comment:6>
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