Would it be fair to describe Blink's JIT as more of a "baseline JIT" to QEMU's "optimized JIT", or does that analogy not accurately capture what you mean in the first paragraph?
Both of them are pretty basic but Blink is closer to subroutine-threaded code than to a full JIT. IIRC it has no intermediate representation, liveness analysis or register allocation.
QEMU has all of those but only within a basic block, so it does not do any complicated data flow analysis. It's what would be considered a baseline JIT in the JavaScript world. Rosetta is similar too as far as I understand.
