1 // Copyright 2011 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: --allow-natives-syntax 29 30 // This is a regression test for overlapping key and value registers. 31 function f(a) { 32 a[0] = 0; 33 a[1] = 0; 34 } 35 36 var a = new Int32Array(2); 37 for (var i = 0; i < 5; i++) { 38 f(a); 39 } 40 %OptimizeFunctionOnNextCall(f); 41 f(a); 42 43 assertEquals(0, a[0]); 44 assertEquals(0, a[1]); 45 46 // Test the correct behavior of the |length| property (which is read-only). 47 a = new Int32Array(42); 48 assertEquals(42, a.length); 49 a.length = 2; 50 assertEquals(42, a.length); 51 assertTrue(delete a.length); 52 a.length = 2 53 assertEquals(2, a.length); 54 55 // Test the correct behavior of the |BYTES_PER_ELEMENT| property (which is 56 // "constant", but not read-only). 57 a = new Int32Array(2); 58 assertEquals(4, a.BYTES_PER_ELEMENT); 59 a.BYTES_PER_ELEMENT = 42; 60 assertEquals(42, a.BYTES_PER_ELEMENT); 61 a = new Uint8Array(2); 62 assertEquals(1, a.BYTES_PER_ELEMENT); 63 a = new Int16Array(2); 64 assertEquals(2, a.BYTES_PER_ELEMENT); 65 66
