LLVM is an extremely open backend. So it can be used for many projects a short list of its usages: * Compiling SPIR-V shaders to GPU executables * Compiling C

LLVM is an extremely open backend. So it can be used for many projects a short list of its usages: * Compiling SPIR-V shaders to GPU executables * Compiling C * Compiling C++ * Compiling Rust * Compiling Haskell * Compiling Swift * JIT compilers for databases * JVM JIT Effectively once you translate to LLVM-IR you are basically home free, the LLVM can handle the rest. Which means you have a board range of people providing optimization passes, and catching bugs. --- With the GCC its IR is tightly coupled to the C front end. While there has been some decoupling, this is generally considered a feature as it doesn't allow for a corporation to _run away_ with part of the project. --- The LLVM is more modular, you can pick and take what you need. You can embed it, or call it externally. It is a hybrid BST/MIT/X11 license so it is open source, and embedding it in your project doesn't mean your project becomes GPL'd.