Intel CPU MMX SSE SSE2/3/4指令集手册下载URL
在线查看的网址：
https://software.intel.com/sites/landingpage/IntrinsicsGuide/
Intel® 64 and IA-32 Architectures Software Developer's Manuals
http://www.intel.com/products/processor/manuals/
Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 1: Basic Architecture
http://download.intel.com/design/processor/manuals/253665.pdf