third_party/v8/test/mjsunit/compiler/escape-analysis-cycle.js

// 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 --turbo-escape

function g(o) {
  return {a : o, b: 42, c: o};
}

function f() {
  var o = {a: {}, b: 43};
  o.a = g(g(o));
  o.c = o.a.c;
  %DeoptimizeNow();
  return o.c.a.c.a.c.a.c.b;
}

%PrepareFunctionForOptimization(f);
assertEquals(42, f());
assertEquals(42, f());
%OptimizeFunctionOnNextCall(f);
assertEquals(42, f());