/usr/lib/clc/gfx900-amdgcn--amdhsa.bc is in libclc-amdgcn 0.2.0+git20180312-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/clc/amdgcn--amdhsa.bc
/usr/lib/clc/amdgcn--amdhsa.bc