[GHC] #9349: excessive inlining due to state hack

[GHC]

#9349: excessive inlining due to state hack
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              Reporter:  rwbarton    |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Runtime     |       Blocked By:
  performance bug                    |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by klao):

 I'd like to point out before we close this issue, that it is (at least in
 part) a `7.8`-specific regression.

 My little example works perfectly fine with `7.6.3` regardless of
 optimization levels and flags. So, in the least, it has become easier to
 trigger this bug (even if some similar instances were present before).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9349#comment:7>
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