Alibaba Terminal Technology

Jan 14, 2022 · Fundamentals

How PEP 659 Boosts CPython Performance: Bytecode Specialization Explained

This article examines PEP 659, the Specializing Adaptive Interpreter proposed for CPython, explains its non‑JIT approach, details the warm‑up, adaptive, specializing and de‑optimisation phases, and walks through the actual source‑code implementation using the LOAD_GLOBAL instruction as a concrete example.