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Both QBE and LLVM are compiler backends using an SSA representation. This document will explain why LLVM does not make QBE a redundant project. Obviously, everything following is biased, because written by me. Scope QBE is a much smaller scale project with different goals than LLVM. QBE is for amateur language designers. It does not address all the problems faced when conceiving an industry-grade

QBE compiler backend QBE is a compiler backend that aims to provide 70% of the performance of industrial optimizing compilers in 10% of the code. QBE fosters language innovation by offering a compact user-friendly and performant backend. The size limit constrains QBE to focus on the essential and prevents embarking on a never-ending path of diminishing returns. Overview The C codebase of QBE is in

Green Threads Explained A short and self contained explanation that will guide you through an implementation of user threads. Introduction The x86-64 architecture and ABI Code 0: Foundations Fork me on Github Introduction Green threads or userland threads (depending on your generation) provide high efficiency concurrency in a lot of mainstream languages. To only cite a few, CPython (via external l

QBE compiler backend QBE is a compiler backend that aims to provide 70% of the performance of industrial optimizing compilers in 10% of the code. QBE fosters language innovation by offering a compact user-friendly and performant backend. The size limit constrains QBE to focus on the essential and prevents embarking on a never-ending path of diminishing returns. Overview The C codebase of QBE is in