[GHC] #9476: Implement late lambda-lifting

[GHC]

#9476: Implement late lambda-lifting
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        Reporter:  simonpj           |                Owner:  sgraf
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.8.2
      Resolution:                    |             Keywords:  LateLamLift
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8763 #13286      |  Differential Rev(s):
       Wiki Page:  LateLamLift       |
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Comment (by simonpj):

 This sounds great, thank you!

 There are some knobs you can turn in LLF, aren't there.  E.g. if a
 function has 200 free vars, we probably don't want to lambda-lift it an
 turn it into a function with 200 parameters.

 Did you experiment with different settings of the threshold for number-of-
 free-vars?

 There may be more knobs too.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9476#comment:24>
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