Acronym nitpick: LLVM originally stood for low-level virtual machine, not little-language. It doesn't really have a connection to the little-language or domain-specific-language communities, but instead originates in a desire to provide a compiler target that was lower-level than generating C code, but less platform-specific than directly generating machine code (C-- is another project in that space). But it's since been renamed to just LLVM, a brand that doesn't officially stand for anything.