// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
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//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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function dead1(a, b) {
    { var x = a + b; }
    return a; // x is dead
}

function dead2(a, b) {
    { var x = a | 0; var y = b | 0; }
    return a; // x and y are both dead
}

function dead3(a, b) {
    {
      var z;
      if(a == 2) z = a;
      else z = b;
    }
    return a; // z is dead
}

function dead4(a) {
    {
      var z = 3;
      for (i = 0; i < 3; i++) {
        z++;
      }
    }
    return a; // z is dead
}

function dead5(a) {
    {
      var z = 3;
      for (i = 0; i < 3; i++) {
        z++;
      }
      var w = z + a;
    }
    return a; // z and w are dead
}

assertTrue(dead1(33, 32) == 33);
assertTrue(dead2(33, 32) == 33);
assertTrue(dead3(33, 32) == 33);
assertTrue(dead4(33) == 33);
assertTrue(dead5(33) == 33);

assertTrue(dead1(34, 7) == 34);
assertTrue(dead2(34, 7) == 34);
assertTrue(dead3(34, 7) == 34);
assertTrue(dead4(34) == 34);
assertTrue(dead5(34) == 34);

assertTrue(dead1(3.4, 0.1) == 3.4);
assertTrue(dead2(3.4, 0.1) == 3.4);
assertTrue(dead3(3.4, 0.1) == 3.4);
assertTrue(dead4(3.4) == 3.4);
assertTrue(dead5(3.4) == 3.4);