A mature production grade optimising JIT compiler codebase feels very it is weighty to understand for a newcomer in order to add value to the space because ther

A mature production grade optimising JIT compiler codebase feels very it is weighty to understand for a newcomer in order to add value to the space because there's so much content to learn and be familiar with. Godbolt for compiler internals and each compiler internal pass would be useful for me.