[GHC] #9476: Implement late lambda-lifting

[GHC]

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

 * cc: sgraf (added)


Comment:

 I rebased Nicholas Frisby's work here:
 https://github.com/sgraf812/ghc/tree/llf.

 It doesn't currently pass the testsuite (even in default mode, not doing
 any llf), probably because I introduced some errors while merging some
 decision code and taking care of join point (then still running by let-no-
 escape) information. In particular, the devel2 version triggers an ASSERT
 in `add_id`.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9476#comment:11>
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