Sparkplug (V8 baseline JIT)

RU: Sparkplug (V8 baseline JIT)

V8's non-optimizing baseline JIT compiler, sitting between Ignition (interpreter) and Maglev (mid-tier optimizer). Sparkplug compiles bytecode to machine code in a single linear pass by emitting calls to the same builtins Ignition uses, without building an IR or applying optimizations. Compilation is fast enough that it runs on any sufficiently warm function, cutting interpreter overhead at minimal cost.