patch applied (ghc): Fix for T3286 in new codegen (related to T3132); plus formatting

[John Dias]

Fri Sep 18 11:31:22 PDT 2009  dias at cs.tufts.edu
  * Fix for T3286 in new codegen (related to T3132); plus formatting
  Ignore-this: c23b1aed37be610552a7dba6d32cd923
  If the scrutinee is bottom, the generated Cmm code could have a
  type error when the case arm expected an unboxed floating-point
  value (even though the arm should never be reached).
  Now, we detect this case and avoid producing the type-incorrect
  assignment.
  

    M ./compiler/codeGen/StgCmmExpr.hs -14 +37

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090918183122-a3835-6f98ebd9832d6d7783c36f10708bf3ab80dd39af.gz