Maglev (V8 mid-tier JIT)

RU: Maglev (V8 mid-tier JIT)

V8's mid-tier optimizing JIT compiler, sitting between Sparkplug (fast baseline) and TurboFan (slow, heavy optimizer). Maglev compiles roughly 10× slower than Sparkplug but 10× faster than TurboFan, producing code that is substantially better than baseline. It uses SSA form and type-feedback-driven speculative optimization, reducing reliance on the expensive TurboFan tier.