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// 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.
// * Neither the name of Google Inc. nor the names of its
// 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
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --allow-natives-syntax
// Test some dead code elimination scenarios
function dead1(x, y) {
var a = x | 0, b = y | 0;
a * b;
a << b;
a >> b;
a >>> b;
a | b;
a & b;
a ^ b;
return x;
}
function dead2(x, y) {
var a = x | 0, b = y | 0;
(a | 0) * b;
(a | 0) << b;
(a | 0) >> b;
(a | 0) >>> b;
(a | 0) | b;
(a | 0) & b;
(a | 0) ^ b;
return x;
}
function dead3(a, b) {
a == 2 ? (a * b) : (b * a); // dead
return a;
}
assertTrue(dead1(33, 32) == 33);
assertTrue(dead1(33, 32) == 33);
%OptimizeFunctionOnNextCall(dead1);
assertTrue(dead1(33, 32) == 33);
assertTrue(dead2(34, 11) == 34);
assertTrue(dead2(34, 11) == 34);
%OptimizeFunctionOnNextCall(dead2);
assertTrue(dead2(34, 11) == 34);
assertTrue(dead3(35, 12) == 35);
assertTrue(dead3(35, 12) == 35);
%OptimizeFunctionOnNextCall(dead3);
assertTrue(dead3(35, 12) == 35);
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