CPU Instructions & Intrinsics

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Overview

• Compiler Intrinsics

Assembly

• x86 Assembly

• winasm: The x86 Assembly community and official home of WinAsm Studio and HiEditor

• Easy Code Visual assembly IDE

• 0xAX/asm: Learning assembly for linux-x64

SIMD

Intel MMX & SSE

• Intel Intrinsics Guide

• SSE (Streaming SIMD Extentions)

• C++ - Getting started with SSE

• SSE - Vectorizing conditional code
• SSE图像算法优化系列(cnblogs)

ARM NEON

Arm NEON technology is an advanced SIMD (single instruction multiple data) architecture extension for the Arm Cortex-A series and Cortex-R52 processors.

• NEON Intrinsics Reference
• ARM NEON Tutorial in C and Assembler
• ARM NEON编程初探——一个简单的BGR888转YUV444实例详解

Compiler Options:

• test ARM NEON

Bash

gcc -dM -E -x c /dev/null | grep -i -E "(SIMD|NEON|ARM)"

• Raspberry Pi 3 Model B

• g++ options

  Bash

  -std=c++11 -O3 -march=native -mfpu=neon-vfpv4 -mfloat-abi=softfp -ffast-math
  

• for the compilation error error: ‘vfmaq_f32’ was not declared in this scope, you might add the option -mfpu=neon-vfpv4 to enable __ARM_FEATURE_FMA in arm_neon.h

Reference Books:

• NEON Programmer’s Guide
• ARM® NEON Intrinsics Reference

Converter

• jratcliff63367/sse2neon
• From ARM NEON* to Intel® SSE - The Automatic Porting Solution, Tips and Tricks