Welcome to LLILC
LLILC is an LLVM based MSIL Compiler - we pronounce it 'lilac' - with a goal of producing a set of cross-platform .NET code generation tools. Today LLILC is being developed against dotnet/CoreCLR for use as a JIT, as well as an cross platform platform object emitter and disassembler that is used by CoreRT as well as other dotnet utilites.
See the documentation for more information. It has a more complete discussion of our background and goals as well as "getting started" details and developer information.