Streaming simd extensions 2, Streaming simd extensions 3 – Intel ARCHITECTURE IA-32 User Manual
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IA-32 Intel® Architecture Optimization
1-6
SSE instructions are useful for 3D geometry, 3D rendering, speech
recognition, and video encoding and decoding.
Streaming SIMD Extensions 2
Streaming SIMD extensions 2 add the following:
•
128-bit data type with two packed double-precision floating-point
operands
•
128-bit data types for SIMD integer operation on 16-byte, 8-word,
4-doubleword, or 2-quadword integers
•
support for SIMD arithmetic on 64-bit integer operands
•
instructions for converting between new and existing data types
•
extended support for data shuffling
•
extended support for cacheability and memory ordering operations
SSE2 instructions are useful for 3D graphics, video decoding/encoding,
and encryption.
Streaming SIMD Extensions 3
Streaming SIMD extensions 3 add the following:
•
SIMD floating-point instructions for asymmetric and horizontal
computation
•
a special-purpose 128-bit load instruction to avoid cache line splits
•
an x87 FPU instruction to convert to integer independent of the
floating-point control word (FCW)
•
instructions to support thread synchronization
SSE3 instructions are useful for scientific, video and multi-threaded
applications.