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Pointers Gone Wild0 Hot0 comments16 min read
Plush's New Register-Based Interpreter Is Insanely Fast
A deep technical dive into rewriting the Plush programming language's interpreter from a stack-based design (like CPython) to a register-based design (like Lua), using a 64-bit instruction word. The rewrite, combined with a series of targeted optimizations (fused compare-and-branch, immediate shifts, constant deduplication, better branch layout, etc.), yields a geometric mean speedup of 1.94x over the old interpreter, with a median of 2.07x and a max of 3.37x across benchmarks. Benchmarked against CPython, CRuby, and Lua, Plush now outperforms Lua by 24-55% on select benchmarks and is fast enough to run Quake-level 3D rendering with texturing at interactive frame rates. Includes new install scripts for macOS/Linux/Windows and discusses future plans around object header sizing, TCP networking, and error handling.
Source: https://pointersgonewild.com/2026-09-02-plushs-new-register-based-interpreter. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.
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