标题： AVX / NEON 内在函数：何时应该使用它们？ 显示英文标题

标题： AVX / NEON Intrinsic Functions: When Should They Be Used?

摘要： 一种交叉配置基准被提出，以在需要向量化策略来优化代码的通用开发项目背景下，探索AVX/NEON内联函数的能力和限制。主要目的是指导开发者根据操作系统、架构和/或可用编译器来选择何时使用内联函数。观察到内联函数在条件分支中非常高效，内联版本的执行时间达到普通代码执行时间的约5%。然而，在许多情况下观察到内联函数是不必要的，因为编译器已经很好地自动向量化代码。 显示英文摘要

摘要： A cross-configuration benchmark is proposed to explore the capacities and limitations of AVX / NEON intrinsic functions in a generic context of development project, when a vectorisation strategy is required to optimise the code. The main aim is to guide developers to choose when using intrinsic functions, depending on the OS, architecture and/or available compiler. Intrinsic functions were observed highly efficient in conditional branching, with intrinsic version execution time reaching around 5% of plain code execution time. However, intrinsic functions were observed as unnecessary in many cases, as the compilers already well auto-vectorise the code.