v8/test/mjsunit/compiler/lazy-const-lookup.js

// Copyright 2011 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
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//       from this software without specific prior written permission.
//
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// Flags: --allow-natives-syntax

function outer() {
  const x = 1;
  function inner() {
    return x;
  }
  %PrepareFunctionForOptimization(inner);
  inner();
  %OptimizeFunctionOnNextCall(inner);
  inner();
}

outer();