[GHC] #10421: exponential blowup in inlining (without INLINE pragmas)

[GHC]

#10421: exponential blowup in inlining (without INLINE pragmas)
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        Reporter:  rwbarton          |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.6.3
      Resolution:                    |             Keywords:  Inlining
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by phadej):

 The code in RegBigger looks like Yesod code in trac:13253, but here we run
 in `IO`, not `MForm = RWST`. I checked all yesod-forms, back to
 http://hackage.haskell.org/package/yesod-form-0.2.0.1 released in *2011*,
 the `MForm` is `RWST` all the way down.

 I'd close this ticket (there is trac:13253), as there is no way to
 reproduce using `RegBigger.hs`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10421#comment:3>
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