Regarding PHP specifically, the interpreter's opcodes are all described in a met... | Hacker News

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		mappu on April 25, 2021 \| parent \| context \| favorite \| on: Parsing Protobuf at 2+GB/S: How I Learned to Love ... Regarding PHP specifically, the interpreter's opcodes are all described in a meta language, and the actual PHP interpreter can be code-generated in 4 different styles depending on what is fastest for the target C compiler. See ZEND_VM_KIND_CALL / SWITCH / GOTO / HYBRID in php-src/Zend/zend_vm_gen.php

jashmatthews on April 25, 2021 [–]

Even more wild is the JavaScriptCore bytecode VM which is written in a Ruby DSL which is either compiled to C or directly to ASM.

I'm jealous we don't have something like this for CRuby!

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