{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"\"workitem.id.z\""}]}
                    "workitem.id.z" => "__builtin_amdgcn_workitem_id_z",
                    "workitem.id.y" => "__builtin_amdgcn_workitem_id_y",
                    _ => unimplemented!("***** unsupported LLVM intrinsic {full_name}"),