bc8f6943bb
BUG=None TEST=mjsunit/external-arrays.js; updated cctest; existing unit tests Review URL: http://codereview.chromium.org/6879009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
91 lines
3.0 KiB
JavaScript
91 lines
3.0 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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// This is a regression test for overlapping key and value registers.
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function f(a) {
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a[0] = 0;
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a[1] = 0;
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}
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var a = new Int32Array(2);
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for (var i = 0; i < 5; i++) {
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f(a);
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}
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%OptimizeFunctionOnNextCall(f);
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f(a);
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assertEquals(0, a[0]);
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assertEquals(0, a[1]);
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// Test the correct behavior of the |length| property (which is read-only).
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a = new Int32Array(42);
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assertEquals(42, a.length);
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a.length = 2;
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assertEquals(42, a.length);
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assertTrue(delete a.length);
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a.length = 2
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assertEquals(2, a.length);
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// Test the correct behavior of the |BYTES_PER_ELEMENT| property (which is
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// "constant", but not read-only).
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a = new Int32Array(2);
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assertEquals(4, a.BYTES_PER_ELEMENT);
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a.BYTES_PER_ELEMENT = 42;
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assertEquals(42, a.BYTES_PER_ELEMENT);
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a = new Uint8Array(2);
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assertEquals(1, a.BYTES_PER_ELEMENT);
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a = new Int16Array(2);
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assertEquals(2, a.BYTES_PER_ELEMENT);
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// Test Float64Arrays.
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function get(a, index) {
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return a[index];
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}
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function set(a, index, value) {
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a[index] = value;
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}
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var array = new Float64Array(2);
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for (var i = 0; i < 5; i++) {
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set(array, 0, 2.5);
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assertEquals(2.5, array[0]);
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}
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%OptimizeFunctionOnNextCall(set);
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set(array, 0, 2.5);
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assertEquals(2.5, array[0]);
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set(array, 1, 3.5);
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assertEquals(3.5, array[1]);
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for (var i = 0; i < 5; i++) {
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assertEquals(2.5, get(array, 0));
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assertEquals(3.5, array[1]);
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}
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%OptimizeFunctionOnNextCall(get);
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assertEquals(2.5, get(array, 0));
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assertEquals(3.5, get(array, 1));
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