{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"\"uxtb16\""}]}
                    "uxtb16" => "__builtin_arm_uxtb16",
                    "uxtab16" => "__builtin_arm_uxtab16",
                    _ => unimplemented!("***** unsupported LLVM intrinsic {full_name}"),