[GHC] #8317: Optimize tagToEnum# at Core level

[GHC]

#8317: Optimize tagToEnum# at Core level
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        Reporter:  jstolarek         |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:                    |             Keywords:  datacon-tags
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:  8326              |             Blocking:
 Related Tickets:  #6135             |  Differential Rev(s):  Phab:D343
       Wiki Page:                    |
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Changes (by bgamari):

 * keywords:   => datacon-tags


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8317#comment:10>
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