[GHC] #7219: Reinstate constant propagation in some form

[GHC]

#7219: Reinstate constant propagation in some form
---------------------------------+------------------------------------------
    Reporter:  simonmar          |       Owner:  simonmar               
        Type:  bug               |      Status:  merge                  
    Priority:  highest           |   Milestone:  7.8.1                  
   Component:  Compiler          |     Version:  7.7                    
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by simonmar):

  * status:  new => merge


-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7219#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler