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The code shown in this project's readme wouldn't work statically - can you see all the deoptimisation points in the generated code? It can only be made so fast because it has the option to bail out to the interpreter at any point.

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V8 doesn't have an interpreter, so it doesn't bail out to one. It certainly bails out to its baseline compiler, though!

FYI http://v8project.blogspot.com/2016/08/firing-up-ignition-int...

Right—there's one coming, but it's not there yet.

Can you elaborate at what you mean here? I don't see where this interpreter is implemented.

As gsnedders pointed out it is actually a template compiler rather than an interpreter at the moment.

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