The LLVM Compiler Infrastructure (cacm.acm.org)

LLVM here refers to the LLVM Compiler Infrastructure, an open source software system created to simplify the design and implementation of compilers and a wide range of compiler-based tools.

It's also fairly accessible to LLMs. I was surprised at how quickly a self-hosting compiler could be brought up using the LLVM ecosystem.

This infrastructure is also slow and leads to poor compilation times for any language that uses llvm as a backend. In an era of automatic code generation, this will become more and more of a problem as llvm compilation times will become a huge bottleneck. I am very bearish on llvm as a technology and while I will acknowledge its influence, I expect that it is at or near its peak and market share will decline dramatically over the next five to ten years.

While LLVM is undoubtedly a great project for compiler research, lets not forget those that predated it with similar ideas like the Amsterdam Compiler Toolkit, or IBM's PL.8 compiler for the RISC project.

I’ve been shocked by how much LLVM leaves on the table while designing Logos language! Some very exciting benchmarks coming soon that we’ve been working on for over 6 months, but LLVM misses a LOT of potential optimizations when you have a strong type system!