"Unless proven otherwise, ability to generate and run machine code, especially in same execution/privilege context as generator, is blatant memory unsafety comparable to the memory unsafety of C."
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However, the hard part of this is making sure the compiler is fast enough to be competitive. The trajectory of JS is unfortunately in the direction of fewer IRs and fast “hand code assembly for every macro-op”, for speed.
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Being fast is an arms race and in arms races nobody but the arms dealers win. It's like adding more highway lanes. You don't need faster JS you need to nuke the ads and awful js frameworks that are layer upon layer of useless (& often Shlemiel) bloat.
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