[GHC] #4937: Remove indirections caused by sum types, such as Maybe

[GHC]

#4937: Remove indirections caused by sum types, such as Maybe
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        Reporter:  tibbe             |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  8.0.1
       Component:  Compiler          |                 Version:  7.0.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by WrenThornton):

 * cc: winterkoninkje+ghc@… (removed)
 * cc: wren@… (added)


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4937#comment:24>
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