v8/test/mjsunit/compiler/escape-analysis-7.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() {
  this.x=0;
}

function g(a) {
  "use strict";
  var o = new f();
  if (a) {
    o.x = 5;
  } else {
    o.x = 7;
  }

  return o.x;
}

%PrepareFunctionForOptimization(g);
assertEquals(5, g(true));
assertEquals(7, g(false));
%OptimizeFunctionOnNextCall(g);
assertEquals(5, g(true));
assertEquals(7, g(false));
assertEquals(7, g());