AMD-64 optimizations, some (new) code

[Gabriel Dos Reis]

Torbjorn Granlund <tege at swox.com> writes:

| Ashod Nakashian <saghmos at xter.net> writes:
| 
|   If I had more disk space, I'd have compiled and installed gcc 4.0.1 (I
|   currently use 3.3.3 and I have hit more than one problem with the
|   generated code!)
| 
| I think you'll find that gcc 4.0.1 is a lot worse than 3.3.3.  It
| might be safer to upgrade to 3.3.6 (or whatever is the latest 3.3
| release).

3.3.6 is the latest release I made for the 3.3.x series.

-- Gaby