YJIT, an open source project led by a small team of developers at Shopify to incrementally build a new JIT compiler inside CRuby. Key advantages are that our compiler delivers very fast warm up, and we have complete, fine-grained control over the entire code generation pipeline. In this talk, I present the approach we are taking to implement YJIT and discuss early performance results. The talk will conclude with a discussion of what steps can be taken to unlock higher levels of performance for all JIT compilers built inside CRuby, be it YJIT, MJIT or any future JIT compiler efforts.

RubyKaigi Takeout 2021: https://rubykaigi.org/2021-takeout/presentations/maximecb.html

(From Youtube)