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Re: [Nel] memcpy for SSE ?


From: Andi [ Debug ]
Subject: Re: [Nel] memcpy for SSE ?
Date: Sat, 18 Sep 2004 13:21:46 -0500

you need the visual studio service pack 5 and visual studio processor pack for SP5 to use those opcodes.
 
 
----- Original Message -----
Sent: Saturday, September 18, 2004 7:53 AM
Subject: RE: [Nel] memcpy for SSE ?

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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