Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 28 | // Flags: --allow-natives-syntax |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 29 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 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 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 35 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 36 | var a = new Int32Array(2); |
| 37 | for (var i = 0; i < 5; i++) { |
| 38 | f(a); |
| 39 | } |
| 40 | %OptimizeFunctionOnNextCall(f); |
| 41 | f(a); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 42 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 43 | assertEquals(0, a[0]); |
| 44 | assertEquals(0, a[1]); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 45 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 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); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 54 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame^] | 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 | |