Comment by drmeister

SBCL doesn't generate LLVM code. My primary goal was Common Lisp with C++ interoperation. It seemed easier at the time to start from the ECL Common Lisp code base and write a new C++ core and a Common Lisp interpreter that always interoperated with C++. As I wrote the compiler and expanded the system I maintained C++ interoperation all the time. There were a hundred problems that I had to discover and solve along the way to maintain a Common Lisp that interoperated with C++. You can get some level of interoperation between ECL and C++ up in a weekend but it won't work with C++ exceptions and RAII and there are dozens of other problems. In retrospect I don't think I would have gotten here starting from ECL because I never really understood the ECL code.