[GHC] #8326: Place heap checks common in case alternatives before the case

[GHC]

#8326: Place heap checks common in case alternatives before the case
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        Reporter:  jstolarek         |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.7
      Resolution:                    |             Keywords:  CodeGen
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:  8317
 Related Tickets:  #1498             |  Differential Rev(s):  Phab:D343
       Wiki Page:                    |
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Changes (by simonpj):

 * keywords:   => CodeGen


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8326#comment:45>
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