ZJIT

ZJIT website. Coming soon. For now, please check out the ZJIT docs.

What people are saying

Here are some blog posts and talks about ZJIT.

Blog posts

• How ZJIT removes redundant object loads and stores
• A multi-entry CFG design conundrum
• ZJIT is now available in Ruby 4.0
• How to annotate JITed code for perf/samply
• Adding Iongraph support to ZJIT
• How Ruby Executes JIT Code: The Hidden Mechanics Behind the Magic
• ZJIT has been merged into Ruby

Talks

TODO

• RubyKaigi 2026
• REBASE
• SFRuby
• RubyKaigi 2025