v8/test/mjsunit/regress/regress-580.js
kasperl@chromium.org 90b3370374 Update V8 to version 3.0 (re-land r5920).
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5922 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2010-12-07 11:31:57 +00:00

56 lines
2.4 KiB
JavaScript

// Copyright 2010 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,
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Test constant folding of smi operations that overflow a 32-bit int
// See http://code.google.com/p/v8/issues/detail?id=580
function num_ops() {
var x;
var tmp = 0;
x = (tmp = 1578221999, tmp)+(tmp = 572285336, tmp);
assertEquals(2150507335, x, "++");
x = 1578221999 + 572285336;
assertEquals(2150507335, x);
x = (tmp = -1500000000, tmp)+(tmp = -2000000000, tmp);
assertEquals(-3500000000, x, "+-");
x = -1500000000 + -2000000000;
assertEquals(-3500000000, x);
x = (tmp = 1578221999, tmp)-(tmp = -572285336, tmp);
assertEquals(2150507335, x, "--");
x = 1578221999 - -572285336;
assertEquals(2150507335, x);
x = (tmp = -1500000000, tmp)-(tmp = 2000000000, tmp);
assertEquals(-3500000000, x, "-+");
x = -1500000000 - 2000000000;
assertEquals(-3500000000, x);
}
num_ops();