/usr/lib/clc/pitcairn-amdgcn--.bc is in libclc-amdgcn 0.2.0+git20160907-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/clc/tahiti-amdgcn--.bc
/usr/lib/clc/tahiti-amdgcn--.bc