patch applied (ghc): Improve arity propagation in the specialiser

[Simon Peyton Jones]

Mon Mar 23 03:16:14 PDT 2009  simonpj at microsoft.com
  * Improve arity propagation in the specialiser
  
  This patch makes the specialiser propagate arities a bit more
  eagerly, which avoids a spurious warning in the simplifier.
  
  See Note [Arity decrease] in Simplify.lhs
  

    M ./compiler/simplCore/Simplify.lhs -1 +25
    M ./compiler/specialise/Specialise.lhs -4 +9

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090323101614-1287e-3cd6c03d817700520edd15c379b91a6c2da44b69.gz