// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --allow-natives-syntax

(function() {
function doShift(a) {
  return a.shift();
};
%PrepareFunctionForOptimization(doShift);
function test() {
  var a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16];
  assertEquals(0, doShift(a));
  assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16], a);
}

test();
test();
%OptimizeFunctionOnNextCall(doShift);
test();
})();

(function() {
function doShift(a) {
  return a.shift();
};
%PrepareFunctionForOptimization(doShift);
function test() {
  var a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.1];
  assertEquals(0, doShift(a));
  assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.1], a);
}

test();
test();
%OptimizeFunctionOnNextCall(doShift);
test();
})();

(function() {
function doShift(a) {
  return a.shift();
};
%PrepareFunctionForOptimization(doShift);
function test() {
  var a = [, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.1];
  assertEquals(undefined, doShift(a));
  assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.1], a);
}

test();
test();
%OptimizeFunctionOnNextCall(doShift);
test();
})();

(function() {
function doShift(a) {
  return a.shift();
};
%PrepareFunctionForOptimization(doShift);
function test() {
  var a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, '16'];
  assertEquals(0, doShift(a));
  assertEquals([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, '16'], a);
}

test();
test();
%OptimizeFunctionOnNextCall(doShift);
test();
})();