[GHC] #12364: Demand analysis for sum types

[GHC]

#12364: Demand analysis for sum types
-------------------------------------+-------------------------------------
        Reporter:  nomeata           |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by osa1):

 Our branch is big because we do worker/wrapper for sums, CPR, unpacking
 sum fields in DataCons etc. If you only need demand analysis I suggest
 just copying Demand.hs and DmdAnal.hs. You may then need to fix
 worker/wrapper pass so that it won't crash when it sees a sum demand or
 cpr etc.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12364#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler