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computed goto for efficient dispatch tables

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Properties

Type
Blogs
Status
待读
Domain
Compilers / PL
Category
编译器设计与实现
Source
eli.thegreenplace.net
Vault note
library/articles/compilers/computed-goto-for-efficient-dispatch-tables-e24eeb83307f353e.md

Summary

Eli Bendersky 用一个小型 bytecode VM 对比 `switch` dispatch 和 GCC computed goto dispatch，解释为什么 CPython 等解释器会用 computed goto 优化分发循环。

Highlights

适合理解解释器性能的底层来源，尤其是 bounds check、indirect jump、分支预测和 opcode pair 预测如何影响 VM 主循环。

Notes

解释器分发优化

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