patch applied (ghc): Fix egregious bug in SetLevels.notWorthFloating

[Simon Peyton Jones]

Fri Aug 13 09:14:29 PDT 2010  simonpj at microsoft.com
  * Fix egregious bug in SetLevels.notWorthFloating
  
  This bug just led to stupid code, which would
  later be optimised away, but better not to generate
  stupid code in the first place.

    M ./compiler/simplCore/SetLevels.lhs -4 +4

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20100813161429-1287e-1923dea64086c7c23d60d9d8d7d69ec7855c306c.gz