[GHC] #9476: Implement late lambda-lifting

[GHC]

#9476: Implement late lambda-lifting
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        Reporter:  simonpj           |                Owner:  sgraf
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:  8.8.1
       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):  Phab:D5224
       Wiki Page:  LateLamLift       |
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Comment (by simonpj):

 >  I realised that while the heuristics currently employed work quite
 well, we are too pessimistic wrt. unsaturated applications.

 As I say on Phab, we really need a Note summarising the heuristics.  (And
 of course the paper will help a lot.)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9476#comment:50>
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