node/deps/v8/test/mjsunit/regress/regress-2499.js

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

function foo(word, nBits) {
  return (word[1] >>> nBits) | (word[0] << (32 - nBits));
}

word = [0x1001, 0];

var expected = foo(word, 1);
foo(word, 1);
%OptimizeFunctionOnNextCall(foo);
var optimized = foo(word, 1);
assertEquals(expected, optimized)