[GHC] #4941: SpecConstr generates functions that do not use their arguments

[GHC]

#4941: SpecConstr generates functions that do not use their arguments
---------------------------------+------------------------------------------
    Reporter:  simonpj           |        Owner:                         
        Type:  task              |       Status:  new                    
    Priority:  normal            |    Milestone:  _|_                    
   Component:  Compiler          |      Version:  7.0.1                  
    Keywords:                    |     Testcase:                         
   Blockedby:                    |   Difficulty:                         
          Os:  Unknown/Multiple  |     Blocking:                         
Architecture:  Unknown/Multiple  |      Failure:  Runtime performance bug
---------------------------------+------------------------------------------

Comment(by simonpj):

 Concerning your parenthetical remark, what would you prefer?  Each of
 those strict lets has two branches and GHC rightly refrains from
 duplicating all the code of the continuation into each branch.

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4941#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler