/usr/bin/ is in llvm-3.8 1:3.8-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/bin/llvm-readobj-3.8
/usr/bin/llvm-nm-3.8
/usr/bin/llvm-cov-3.8
/usr/bin/llc-3.8
/usr/bin/llvm-stress-3.8
/usr/bin/llvm-mcmarkup-3.8
/usr/bin/llvm-profdata-3.8
/usr/bin/llvm-dsymutil-3.8
/usr/bin/opt-3.8
/usr/bin/llvm-rtdyld-3.8
/usr/bin/llvm-config-3.8
/usr/bin/llvm-dis-3.8
/usr/bin/llvm-diff-3.8
/usr/bin/obj2yaml-3.8
/usr/bin/llvm-link-3.8
/usr/bin/llvm-dwarfdump-3.8
/usr/bin/llvm-mc-3.8
/usr/bin/llvm-bcanalyzer-3.8
/usr/bin/llvm-tblgen-3.8
/usr/bin/llvm-dwp-3.8
/usr/bin/llvm-split-3.8
/usr/bin/llvm-symbolizer-3.8
/usr/bin/llvm-objdump-3.8
/usr/bin/llvm-ar-3.8
/usr/bin/llvm-extract-3.8
/usr/bin/llvm-size-3.8
/usr/bin/yaml2obj-3.8
/usr/bin/llvm-pdbdump-3.8
/usr/bin/llvm-lto-3.8
/usr/bin/verify-uselistorder-3.8
/usr/bin/llvm-as-3.8
/usr/bin/bugpoint-3.8
/usr/bin/llvm-lib-3.8
/usr/bin/llvm-c-test-3.8
/usr/bin/llvm-ranlib-3.8
/usr/bin/llvm-cxxdump-3.8