LLVM IR is less portable than C; and even where an LLVM back-end is available (say, x86 Windows machines), it's really nice to be able to compile everything wit

LLVM IR is less portable than C; and even where an LLVM back-end is available (say, x86 Windows machines), it's really nice to be able to compile everything with another compiler (say, VS) and get debug info and browse info in the generated files.