v8/test/mjsunit/compiler/escape-analysis-deopt-4.js

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// Flags: --allow-natives-syntax --turbo-escape

// Test deoptimization with captured objects in local variables.
(function testDeoptLocal() {
  "use strict";
  function constructor1() {
    this.x=1;
    this.y=2;
    this.z=3;
  }
  function constructor2(x) {
    this.a=x;
    this.b=4;
  }
  function func() {
    var o1 = new constructor1();
    var o2 = new constructor2(o1);
    o1.x = o1;
    %DeoptimizeNow();
    assertEquals(o1, o1.x);
    assertEquals(2, o1.y);
    assertEquals(3, o1.z);
    assertEquals(o1, o2.a);
    assertEquals(4, o2.b);
  }
  %PrepareFunctionForOptimization(func);
  func();
  func();
  %OptimizeFunctionOnNextCall(func);
  func();
})();