Branko Badrljica wrote:
ONe fo my machines still has K8 -  AMD64 X2 6000+ in it.

cat /proc/cpuinfo doesn't list SSE3 capabilities of the CPU, whereas AMD states that newer AMD64 (2005 and after that) are SSE3 capable and gcc-4.3.2 has -march=k8-sse3

Wikipedia states that AMD K8 is SSE3 capable, except for a few Intel-specific instructions. Maybe that is the reason why it isn't listed in /proc/cpuinfo ?


Until now I have always used -march=k8, but now I wonder whether it would be safe to use k8-sse3.

Has anyone tried this yet ?



SSE3 capability is listed as "pni" (Prescott New Instructions) in /proc/cpuinfo flags. I've been using SSE3 with my AMD64 X2 4600+ for 3 years now.

/Morgan

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