// Copyright 2023 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Flags: --allow-natives-syntax --maglev

function foo(str) {
  return(typeof str === "string");
}
%PrepareFunctionForOptimization(foo);
foo();
%OptimizeMaglevOnNextCall(foo);
foo();