1 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Flags: --noenable_sse4_1 --allow-natives-syntax 29 30 function test1() { 31 // Trigger overflow when converting/truncating double to integer. 32 // Divide by 10 to avoid overflow when smi-tagging at the end. 33 return Math.floor(-100000000000.5) / 10; 34 } 35 36 function test2() { 37 // Trigger no overflow. 38 return Math.floor(-100.2); 39 } 40 41 function test3() { 42 // Trigger overflow when compensating by subtracting after compare. 43 // Divide by 10 to avoid overflow when smi-tagging at the end. 44 return Math.floor(-2147483648.1) / 10; 45 } 46 47 test1(); 48 test1(); 49 %OptimizeFunctionOnNextCall(test1); 50 test2(); 51 test2(); 52 %OptimizeFunctionOnNextCall(test2); 53 test3(); 54 test3(); 55 %OptimizeFunctionOnNextCall(test3); 56 57 assertEquals(-10000000000.1, test1()); 58 assertEquals(-101, test2()); 59 assertEquals(-214748364.9, test3()); 60
