v8/test/mjsunit/elide-double-hole-check-4.js

// Copyright 2013 the V8 project authors. All rights reserved.
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// Flags: --allow-natives-syntax

function f1(a, i) {
  return a[i] + 0.5;
}
%PrepareFunctionForOptimization(f1);
var arr = [0.0,,2.5];
assertEquals(0.5, f1(arr, 0));
assertEquals(0.5, f1(arr, 0));
%OptimizeFunctionOnNextCall(f1);
assertEquals(0.5, f1(arr, 0));
Array.prototype[1] = 1.5;
assertEquals(2, f1(arr, 1));