materialize-dictionary-properties.js 446 Bytes
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14
// Copyright 2017 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

function f() {
  // Create a non-escaping object.
  var o = Object.create(null);
  %DeoptimizeNow();
  // Keep it alive.
  return o ? 1 : 0;
}

15
%PrepareFunctionForOptimization(f);
16 17 18 19
f();
f();
%OptimizeFunctionOnNextCall(f);
assertEquals(1, f());