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// Copyright 2012 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.
// Flags: --allow-natives-syntax --smi-only-arrays
support_smi_only_arrays = %HasFastSmiOnlyElements(new Array(1,2,3,4,5,6,7,8));
if (support_smi_only_arrays) {
print("Tests include smi-only arrays.");
} else {
print("Tests do NOT include smi-only arrays.");
}
if (support_smi_only_arrays) {
function test(test_double, test_object, set, length) {
// We apply the same operations to two identical arrays. The first array
// triggers an IC miss, upon which the conversion stub is generated, but the
// actual conversion is done in runtime. The second array, arriving at
// the previously patched IC, is then converted using the conversion stub.
var array_1 = new Array(length);
var array_2 = new Array(length);
assertTrue(%HasFastSmiOnlyElements(array_1));
assertTrue(%HasFastSmiOnlyElements(array_2));
for (var i = 0; i < length; i++) {
if (i == length - 5 && test_double) {
// Trigger conversion to fast double elements at length-5.
set(array_1, i, 0.5);
set(array_2, i, 0.5);
assertTrue(%HasFastDoubleElements(array_1));
assertTrue(%HasFastDoubleElements(array_2));
} else if (i == length - 3 && test_object) {
// Trigger conversion to fast object elements at length-3.
set(array_1, i, 'object');
set(array_2, i, 'object');
assertTrue(%HasFastElements(array_1));
assertTrue(%HasFastElements(array_2));
} else if (i != length - 7) {
// Set the element to an integer but leave a hole at length-7.
set(array_1, i, 2*i+1);
set(array_2, i, 2*i+1);
}
}
for (var i = 0; i < length; i++) {
if (i == length - 5 && test_double) {
assertEquals(0.5, array_1[i]);
assertEquals(0.5, array_2[i]);
} else if (i == length - 3 && test_object) {
assertEquals('object', array_1[i]);
assertEquals('object', array_2[i]);
} else if (i != length - 7) {
assertEquals(2*i+1, array_1[i]);
assertEquals(2*i+1, array_2[i]);
} else {
assertEquals(undefined, array_1[i]);
assertEquals(undefined, array_2[i]);
}
}
assertEquals(length, array_1.length);
assertEquals(length, array_2.length);
}
test(false, false, function(a,i,v){ a[i] = v; }, 20);
test(true, false, function(a,i,v){ a[i] = v; }, 20);
test(false, true, function(a,i,v){ a[i] = v; }, 20);
test(true, true, function(a,i,v){ a[i] = v; }, 20);
test(false, false, function(a,i,v){ a[i] = v; }, 10000);
test(true, false, function(a,i,v){ a[i] = v; }, 10000);
test(false, true, function(a,i,v){ a[i] = v; }, 10000);
test(true, true, function(a,i,v){ a[i] = v; }, 10000);
// Check COW arrays
function get_cow() { return [1, 2, 3]; }
function transition(x) { x[0] = 1.5; }
var ignore = get_cow();
transition(ignore); // Handled by runtime.
var a = get_cow();
var b = get_cow();
transition(a); // Handled by IC.
assertEquals(1.5, a[0]);
assertEquals(1, b[0]);
} else {
print("Test skipped because smi only arrays are not supported.");
}
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