Direct vs Indirect Branching

最新推荐文章于 2024-07-19 10:20:48 发布

EverNoob

最新推荐文章于 2024-07-19 10:20:48 发布

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分类专栏： Hardware Notes 文章标签：汇编硬件架构

本文链接：https://blog.youkuaiyun.com/maxzcl/article/details/135930249

本文讨论了直接分支和间接分支的区别，以及JumpTable在处理复杂分支和提高速度方面的优势。还提到了C++中继承和简单MCU对间接分支预测的处理。理解这些技术有助于编写更高效的代码。

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(mostly by Bard, with double-checks on prompted output)

Feature	Direct Branch	Indirect Branch
Target address	Specified directly in the instruction	Stored indirectly in a register or memory location
Execution speed	Faster	Slower
Flexibility	Limited	More flexible
Examples	if-then-else, function calls	switch statements, jump tables

Direct Branch:

Target address specified directly in the instruction. This can be done as an absolute address, a relative offset from the current instruction address, or an index into a branch table.
Faster to execute: The target address is readily available, requiring only a singl