[cxr]

> Ruby code I wrote 10ish years ago is still going strong, for example a whole compiler <https://github.com/WebKit/WebKit/tree/main/Source/JavaScript...>

Neat. How is offlineasm used? (Without going into the details about the background of LLInt, that is—what I mean is, how is the compiler invoked?) Is it just the reference compiler, corresponding to some other machinery inside JSC?

[pizlonator]

That’s how the interpreter in JavaScriptCore gets compiled. The interpreter is written in a macro assembly dialect I invented and this is the compiler for it.

(I say compiled, not assembled, because it’s higher level than normal assembly. There’s an actual pipeline of transformations that happens. Plus a Turing complete macro language)

[cxr]

Thanks, that's helpful. (I mistook the compiler as being one that deals with JSC bytecode, either as input or output.)