[GHC] #2940: Do CSE after CorePrep

[GHC]

#2940: Do CSE after CorePrep
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        Reporter:  simonpj           |                Owner:  simonpj
            Type:  bug               |               Status:  new
        Priority:  lowest            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  6.10.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by osa1):

 Simon, may I ask why you're inclined to think that it'd be better to do
 CSE earlier not later? Is it because of type safety reasons?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2940#comment:22>
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