src/third_party/mozjs-45/js/src/jit-test/tests/basic/getelem.js

var a;
function setelem()
{
  a = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];
  a = a.concat(a, a, a);
  var l = a.length;
  for (var i = 0; i < l; i++) {
    a[i] = i;
  }
  return a.toString();
}

setelem();

function getelem_inner(a)
{
  var accum = 0;
  var l = a.length;
  for (var i = 0; i < l; i++) {
    accum += a[i];
  }
  return accum;
}

function getelem()
{
  return getelem_inner(a);
}

assertEq(getelem(), 3486);