[GHC] #3831: SpecConstr should exploit cases where there is exactly one call pattern

[GHC]

#3831: SpecConstr should exploit cases where there is exactly one call pattern
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    Reporter:  igloo             |        Owner:                                
        Type:  bug               |       Status:  new                           
    Priority:  high              |    Milestone:  6.12.2                        
   Component:  Compiler          |      Version:  6.13                          
    Keywords:                    |   Difficulty:                                
          Os:  Unknown/Multiple  |     Testcase:  simplCore/should_compile/T3831
Architecture:  Unknown/Multiple  |      Failure:  Compile-time performance bug  
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Comment(by simonmar):

 Does the bug need fixing in the 6.12 branch, or should it be re-
 milestoned?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3831#comment:3>
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