Sounds like it's probably emitting the machine code in a single pass (compilation speed matters for a browser JIT), perhaps even together in a single pass with lowering (so don't even know the amount of instructions beforehand), and for such adjusting things afterwards would mean parsing & rewriting bytecode, and adjusting already-hardcoded backwards jump distances.
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Sounds like it's probably emitting the machine code in a single pass (compilation speed matters for a browser JIT), perhaps even together in a single pass with lowering (so don't even know the amount of instructions beforehand), and for such adjusting things afterwards would mean parsing & rewriting bytecode, and adjusting already-hardcoded backwards jump distances.