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@lispi314 @alwayscurious @theearthisapringle @swordgeek An unexplored aspect of this is that "JIT" typically refers to often conflated but unrelated things:

1. Performing transformations on the AST/IR to optimize the code abstractly, and

2. Dynamic translation into native machine code and injection of that into the live process.

It's #1 that gets you the vast majority of the performance benefits, but #2 that introduces all the vulnerabilities (because it's all YOLO, there's no formal model for safety of any of that shit).