{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"//"}]}
            // FIXME(f16_f128): Rust `compiler-builtins` doesn't export `powf16` yet.
        sym::powf16 => {
            let x = codegen_f16_f128::f16_to_f32(fx, args[0]);