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Re:JVM Anatomy Quarks by shortercode on Friday January 31, 2020 @04:08AM (#22200193)
While not quite the same the V8 team has a blog that discusses various improvements they are making. Such as the Orinoco GC project. Which typically contains some details on the implementation.

It's a fairly fascinating window into the inner workings, and quite detailed.

https://v8.dev/blog

Re:JVM Anatomy Quarks by jashmatthews on Friday January 31, 2020 @04:48AM (#22200365)
The WebKit blog also has really good info on JSC E.g. https://webkit.org/blog/7122/introducing-riptide-webkits-ret...

Filip Pizlo’s site has a bunch of his presentations of how their JIT compiler works http://www.filpizlo.com/papers.html