patch applied (ghc): is64BitInteger: truncate to 64 bits before testing

[Simon Marlow]

Thu Mar  1 03:25:13 PST 2007  Simon Marlow <simonmar at microsoft.com>
  * is64BitInteger: truncate to 64 bits before testing
  We weren't catching some literals that actually fit in 32 bits before,
  because e.g. -1 was sometimes represented as 0xffffffffffffffff in CmmInt.
  

    M ./compiler/nativeGen/MachCodeGen.hs -1 +7