Displaying 3 results from an estimated 3 matches for "feature_ssefp".
2004 Aug 06
2
[PATCH] Make SSE Run Time option. Add Win32 SSE code
...ersions of the SSE set.
If you read through AMD's processor detection guide
(PDF)
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/20734.pdf
and go to section that shows the sample code for dealing with CPUID
support. (Starts about Page 37) It talks about the FEATURE_SSEFP support
which you have to query for. On the Atholon XP 2400+ that we have here,
that code does not detect the presence of that when run under Windows. The
same code on a Pentium 4 detects it just fine.
Here is an article which describes the K8 (Opteron and Atholon64) as
including the XMM regis...
2004 Aug 06
0
[PATCH] Make SSE Run Time option. Add Win32 SSE code
...If you read through AMD's processor detection guide
> (PDF)
> http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/20734.pdf
>
> and go to section that shows the sample code for dealing with CPUID
> support. (Starts about Page 37) It talks about the FEATURE_SSEFP support
> which you have to query for. On the Atholon XP 2400+ that we have here,
> that code does not detect the presence of that when run under Windows. The
> same code on a Pentium 4 detects it just fine.
OK, I have gone though the doc and I think I understand. What they call
plain...
2004 Aug 06
2
[PATCH] Make SSE Run Time option. Add Win32 SSE code
Jean-Marc,
There is a big difference between SSE and SSEFP. The SSEFP means
that the CPU supports the xmm registers. All Intel chips with SSE support
do, however no current 32 bit AMD chips support the XMM registers. They
will support the SSE instructions but not those registers. You are right
about the SSE2 not being used.
The AMD Opterons are the first AMD CPU's which support