{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"\"read.tgid.y\""}]}
                    "read.tgid.y" => "__builtin_r600_read_tgid_y",
                    "read.tgid.x" => "__builtin_r600_read_tgid_x",
                    "read.tgid.z" => "__builtin_r600_read_tgid_z",