[GHC] #12781: Significantly higher allocation with INLINE vs NOINLINE

[GHC]

#12781: Significantly higher allocation with INLINE vs NOINLINE
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        Reporter:  MikolajKonarski   |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:  JoinPoints
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12747 #12603     |  Differential Rev(s):
  #5775                              |
       Wiki Page:                    |
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Comment (by lukemaurer):

 Confirmed—with join points, `INLINE` vs. `NOINLINE` makes no difference.
 And indeed the key is that we move the case into `$w$j`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12781#comment:7>
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