The LLVM repo is that large because a lot of people have worked on a lot of code. It's not so difficult. A team of tens of programmers can reach that size in a

The LLVM repo is that large because a lot of people have worked on a lot of code. It's not so difficult. A team of tens of programmers can reach that size in a couple of decades, just by writing code and textual documentation. No graphic assets required, all it takes is a generation of steady work by a mid-sized team.