X86-SSE Programming – Packed Integers

Abstract

In Chapter 6 you learned how to manipulate packed integers using the computational resources of MMX. In this chapter, you learn how to process packed integers using the computational resources of x86-SSE. The first sample program highlights using the x86-SSE instruction set to perform basic packed integer operations with the XMM registers. You’ll learn rather quickly that working with the 128-bit wide XMM registers to perform packed integer operations is not that much different than using the 64-bit wide MMX registers. The last two sample programs explain how to use the x86-SSE instruction set to perform common image-processing tasks, including histogram construction and grayscale image thresholding.