{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"\"read.global.size.z\""}]}
                    "read.global.size.z" => "__builtin_r600_read_global_size_z",
                    "read.global.size.y" => "__builtin_r600_read_global_size_y",
                    "read.ngroups.x" => "__builtin_r600_read_ngroups_x",