| January 18, 2010 11:00 PM PST | |
The Streaming SIMD Extensions 2 (SSE2) introduces new Single Instruction Multiple Data (SIMD) double-precision floating-point instructions and new SIMD integer instructions into the IA-32 Intel® architecture. The double-precision SIMD instructions extend functionality in a manner analogous to the single-precision instructions introduced with the Streaming SIMD Extensions (SSE). The 128-bit SIMD integer extensions are a full superset of the 64-bit integer SIMD instructions, with additional instructions to support more integer data types, conversion between integer and floating-point data types, and efficient operations between the caches and system memory. These instructions provide a means to accelerate operations typical of 3D graphics, real-time physics, spatial (3D) audio, video encoding/decoding, encryption, and scientific application. This application note discusses how to use the 128-bit SIMD integer instructions to implement multiplication where the size of the multiplicands is very large. We include examples of code that exploit the SSE2 instructions.
For more complete information about compiler optimizations, see our Optimization Notice.
Comments (3) 
May 27, 2009 5:49 PM PDT
 Fabrício Rodrigues | It's a good information about instructions, but what is must benefit to use SSE 2 or 3? |
| December 3, 2011 10:00 PM PST
Roy | ohoo, It's very nice! |
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