{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
            let x = codegen_f16_f128::f16_to_f32(fx, args[0]);
            // FIXME(f16_f128): Rust `compiler-builtins` doesn't export `powf16` yet.
            let y = codegen_f16_f128::f16_to_f32(fx, args[1]);