/usr/bin/llvm-ld-3.0 is in llvm-3.0 3.0-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../lib/llvm-3.0/bin/llvm-ld
/usr/bin/../lib/llvm-3.0/bin/llvm-ld