An MIR-based JIT prototype for Ruby | Red Hat Developer

I am a GCC compiler engineer, and for the past 15 years, I have primarily focused on the GCC register allocator and instruction scheduler. The major development of the GCC register allocator and instruction scheduler was completed quite some time ago, and these days, my main responsibility is maintaining these essential GCC components. About six years ago, I began dedicating half of my work time to improving performance of CRuby, the de facto standard Ruby implementation. A significant portion of this effort involved implementing the CRuby just-in-time (JIT) compiler.