[GHC] #5245: Cmm optimizer: propagate constants across basic block boundaries

[GHC]

#5245: Cmm optimizer: propagate constants across basic block boundaries
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    Reporter:  tibbe             |        Owner:              
        Type:  feature request   |       Status:  new         
    Priority:  normal            |    Milestone:              
   Component:  Compiler          |      Version:  7.0.3       
    Keywords:                    |     Testcase:              
   Blockedby:                    |   Difficulty:              
          Os:  Unknown/Multiple  |     Blocking:              
Architecture:  Unknown/Multiple  |      Failure:  None/Unknown
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Changes (by simonpj):

 * cc: ezyang@… (added)


Comment:

 This should be dead easy on the new codgen path.  Let's not over-invest in
 the path we are about to discard!

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5245#comment:1>
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