[GHC] #5075: CPR optimisation for sum types if only one constructor is used

[GHC]

#5075: CPR optimisation for sum types if only one constructor is used
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        Reporter:  batterseapower    |            Owner:  simonpj
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:  7.6.2
       Component:  Compiler          |          Version:  7.0.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by nomeata):

 Just to be clear: This ticket is left open because of comment:9, right?

 Also, in case someone looks here: The branch cpr-sum-types is considered
 dead; Its last commit ([9b0d70e/ghc]) is from October 2011, while CPR for
 sum types has hit master in January 2013 ([d3b8991/ghc]). (Maybe we should
 rename dead branches to dead/...?)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5075#comment:17>
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