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      Samsung had a great project that was cancelled just before release (most of the engineers went to Intel, but Intel closed that office a couple of years back). They did lightweight symbolic execution over the JavaScript, which let them monomorphise a lot of it, so they could ahead-of-time compile it and avoid dynamic overheads for a lot of stuff. They didn’t support eval, but aside from that they reported perf within 20% of v8 (faster for some things). I wish they’d open sourced their code when they killed the project, it would have been great for this use case.

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      Isn’t this “dead end” approach basically the one that’s used by all these production-ready Lisp compilers?