[GHC] #1600: Optimisation: CPR the results of IO

[GHC]

#1600: Optimisation: CPR the results of IO
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        Reporter:  simonmar          |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  lowest            |            Milestone:
       Component:  Compiler          |              Version:  6.6.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8598             |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by akio):

 I made a wiki page with a few specific examples:
 [wiki:NestedCPR/Akio2017]. I think I'm now done with updating
 `extendSigsWithLam`. I'm going to run nofib again and look for more
 improvements to make.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1600#comment:71>
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