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详细说明： NEON Programmers Guide - ARM Limited.pdf 关于arm体系 SIMD指令NEON的文档 仅供学习交流使用 Contents NEON Programmer’s Guide Preface References ................................................................................................................ vii Typographical conventions ............................................................ ........................... viii Feedback on this book ................................................................................................ ix Glossary ....................................................................................................................... x Chapter 1 Introduction 1.1 Data processing technologies .................................................................................. 1-2 1.2 Comparison between ARM NEON technology and other implementations ............. 1-4 1.3 Architecture support for NEON technology .............................................................. 1-7 1.4 Fundamentals of NEON technology ...................................................................... 1-10 Chapter 2 Compiling NEON Instructions 2.1 Vectorization ............................................................................................................ 2-2 2.2 Generating NEON code using the vectorizing compiler .......................................... 2-9 2.3 Vectorizing examples ............................................................................................. 2-11 2.4 NEON assembler and ABI restrictions ................................................................... 2-17 2.5 NEON libraries ....................................................................................................... 2-19 2.6 Intrinsics ................................................................................................................. 2-20 2.7 Detecting presence of a NEON unit ....................................................................... 2-21 2.8 Writing code to imply SIMD ................................................................................... 2-22 2.9 GCC command line options ................................................................................... 2-24 Chapter 3 NEON Instruction Set Architecture 3.1 Introduction to the NEON instruction syntax ............................................................ 3-2 3.2 Instruction syntax ..................................................................................................... 3-4 3.3 Specifying data types ............................................................................................... 3-8 3.4 Packing and unpacking data .................................................................................... 3-9 3.5 Alignment ............................................................................................................... 3-10
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