/usr/bin/lli-child-target-3.5 is in llvm-3.5-runtime 1:3.5-4ubuntu2~trusty2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../lib/llvm-3.5/bin/lli-child-target
/usr/bin/../lib/llvm-3.5/bin/lli-child-target