Jon Portnoy wrote:
On Sun, Jan 09, 2005 at 06:47:53PM +0000, Luke-Jr wrote:
On Sunday 09 January 2005 5:53 pm, Ciaran McCreesh wrote:
On Sun, 09 Jan 2005 18:40:42 +0100 Benjamin Schindler
<[EMAIL PROTECTED]> wrote:
| > Do all amd64 boxes support sse? If they do, you can do:
|
| Yes, both sse and sse2
Right. Then you should not be offering USE flag settings for sse/sse2 on
amd64. The only purpose of those flags is to allow us to build, say,
i686 stages on a pentium4 without having to create a whole new arch to
do so.
Does the x86_64 architecture specifications require sse/sse2? Just because
sse-less x86_64 CPUs do not exist right now doesn't mean they won't in the
future, and then the same problem would come up again.
Somehow I can't entirely picture somebody deciding to take amd64 and rip
out features as basic as sse.
Power5 is a G5 without Altivec and extra other features... in a distant
future you might have an embeded version of that thing without SSE,
3dnow ... For example a big computer manufacturer who want to reduce
core size of a specific task (I am not allowed to site an example here)
have 2 more cpu interconnect instead of SIMD units...
Phil
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