Wasmtime

A Rust nightly tail-call interpreter for the Uxn/Raven VM delivers strong performance gains on ARM64 versus hand-written assembly, with mixed results on x86 and WebAssembly; the feature is merged in 0.3.0 and defaults to ARM64, highlighting both promise and cross-platform caveats.

Tech blog revisits Crenshaw’s compiler tutorial, re-implements part of it in Python to emit WebAssembly, and analyzes hand-written parsing vs. syntax-directed translation with code samples, references, and modern tooling.