I am also working in compilers and I am working on LLVM framework. LLVM framework is the best framework according to me to work on. The documentation of the LLVM is according to me the best documentation of any open source available and the mailing list is awesome too. Any one working in compilers or wants to work in compilers should work in LLVM. I am attaching a pdf file to help the beginners installing LLVM. Hope this hepls.


Click here to download installation instructions.