This is the code for the Studienarbeit "Transformation SSA-basierter Zwischensprachen" which implemented a transformation from programs in LLVM language to libFirm. See also:
http://pp.ipd.kit.edu/uploads/publikationen/liebe10studienarbeit.pdf
Note that this is based on LLVM and libFirm versions around 2009/2010 and will not work on the latest versions!