test/mjsunit/compiler/to-fast-properties.js

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// This test requires OSR or --stress-runs=3 to optimize the top level script.

for (var i = 0; i < 3; i++) {
  // HToFastProperties is used for top-level object literals that have
  // function property.
  var obj = {
    index: function() { return i; },
    x: 0
  }
  var n = 10000;
  // Loop to hit OSR.
  for (var j = 0; j < n; j++) {
    obj.x += i;
  }
  assertEquals(obj.index() * n, obj.x);
}