RE: [Nel] memcpy for SSE ?

[Marco Radossi]

Hi ,

 

I've just encountered a problem compiling fast_mem.cpp obtaining an "invalid opcode" message at the "prefetchnta" instruction, so I've searched into the mailing list, but I can't solve my problem.

 

I'm working with MSVC 6.0 and I've already installed the Processor Pack, so maybe the problem is that I've an Athlon 64?

 

Anyway I tryed to translate the "prefetchnta" instruction

 

       prefetchnta 64[ESI] // Prefetch next loop, non-temporal

with this block

 

       _emit 0x0f
       _emit _3DNowOpcodePREFETCHT
       _emit ((_K3D_mm0 & 0x3f) << 3) | 64[_K3D_ESI]

but I'm not sure it's correct because I receive an error just processing the following line.

 

 

Could someone help me?

 

Thanks

 

Marco

 

 

 

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