sse 4.1, 4.2 different from sse 4a

[Peter Johnson]

On Sat, 18 Aug 2007, dfeustel at mindspring.com wrote:

> So sayeth xbit labs in its latest article on the AMD K10 microarchitecture at
> http://www.xbitlabs.com/articles/cpu/display/amd-k10_10.html. I'm not sure
> that I agree with xbit about this. What do you think?

You're right; they're indicated by different CPUID bits (SSE4.1 and 4.2 
are ECX bits 19 and 20 for EAX=0x0001; SSE4a is ECX bit 6 for 
EAX=0x80000001).  I'll fix yasm.  Not a big deal in the short term of 
course; it only affects CPU xxx directive processing.

Thanks,
Peter