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94 Cache and Memory Optimizations Chapter 5
25112 Rev. 3.06 September 2005
Software Optimization Guide for AMD64 Processors
Preferred If the Stores and Loads are Close Together, Option 1
movd eax, mm0
pswapd mm0, mm0
movd edx, mm0
pswapd mm0, mm0
Preferred If the Stores and Loads are Close Together, Option 2
movd eax, mm0
punpckhdq mm0, mm0
movd edx, mm0