Beginning x64 Assembly Programming: From Novice to AVX Professional

© Jo Van Hoey 2019

J. Van HoeyBeginning x64 Assembly Programminghttps://doi.org/10.1007/978-1-4842-5076-1_35

35. AVX

Jo Van Hoey¹ 

(1)

Hamme, Belgium

 

Advanced Vector Extensions (AVX) is an extension of SSE. Whereas SSE provides 16 xmm registers, each 128 bits wide, AVX offers 16 ymm registers, each 256 bits wide. The lower half of each ymm register is in fact the corresponding xmm register. The xmm registers are aliases of the ymm registers. AVX-512 is a further extension offering 32 zmm registers, each 512 bits wide.

In addition to these registers, AVX extends the SSE instructions and provides a whole range of additional new instructions. After you work your way through the SSE chapters in this book, you will not find it too difficult to navigate ...