JezK
Edit File: regress-580.js
// 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, // 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. // 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();