src/v8/test/mjsunit/compiler/escape-analysis-8.js

// Copyright 2015 the V8 project authors. All rights reserved.
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//
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// Flags: --allow-natives-syntax --turbo-escape

function f(a) {
  this.x=a;
  this.y=1;
}

function g() {
  "use strict";
  var o = new f(2);
  while (o.y < 4) {
      o.x = 5;
      o.y = 5;
  }
  return o.x;
}

assertEquals(5, g());
assertEquals(5, g());
%OptimizeFunctionOnNextCall(g);
assertEquals(5, g());