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> When I tried finding any text for my MSc I had little success.

Yes you basically need to sit down with an expert to learn this stuff. It's famously under-documented and extremely hard to learn how it's done in practice on your own.

Here's some good documentation about v8's JIT: https://github.com/thlorenz/v8-perf/blob/master/compiler.md

Note: Never worked on v8, just liked the information here.

I wrote down "Survey of tiered compilation in JIT implementations" when I researched this: https://github.com/sanxiyn/blog/blob/master/posts/2020-01-03...