Ruby 3.3.0-preview2 Released

[NewsBot]

A new Ruby blog post/announcement has been posted!

We are pleased to announce the release of Ruby 3.3.0-preview2. Ruby 3.3 adds a new pure-Ruby JIT compiler named RJIT, uses Lrama as a parser generator, and many performance improvements especially YJIT.

RJIT

• Introduced a pure-Ruby JIT compiler RJIT and replaced MJIT.
  • RJIT supports only x86_64 architecture on Unix platforms.
  • Unlike MJIT, it doesn’t require a C compiler at runtime.
• RJIT exists only for experimental purposes.
  • You should keep using YJIT in production.
• If you are interested in developing JIT for Ruby, please check out k0kubun’s presentation on Day 3 of RubyKaigi.

Use Lrama instead of Bison

• Replace Bison with Lrama LALR parser generator https://www.ruby-lang.org/en/news/2023/09/14/ruby-3-3-0-preview2-released/