[GHC] #10992: Performance regression due to lack of inlining of `foldl` and `foldl'`.

[GHC]

#10992: Performance regression due to lack of inlining of `foldl` and `foldl'`.
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        Reporter:  aleator           |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Core Libraries    |              Version:  7.10.2
      Resolution:                    |             Keywords:  performane
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Runtime           |  (amd64)
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 comment:3 sounds plausible to me.

 Needs a `Note` to explain!  (And a nofib run.)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10992#comment:4>
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