Chris Gehlker wrote:
> In the Intel world, the data path isn't wider between i386 and
> ix86-64. There are more registers, but compilers haven't really been
> optimized to use them yet. But even when they are, one cache miss will
> wipe out the gains from running hundreds of instructions with more
> registers.
>
This isn't true at all. If you're running in x86-64 and something has
been compiled as x86-64 you will absolutely use the additional
registers. Compilers (at least GCC and Intel's compiler, I can't speak
for Microsoft's) have supported x86-64 for quite a while now.
---------------------------------------------------
PLUG-discuss mailing list -
PLUG-discuss@lists.plug.phoenix.az.us
To subscribe, unsubscribe, or to change your mail settings:
http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
(text/plain)