v8/test/mjsunit/array-literal-transitions.js
danno@chromium.org e5f23399b4 Support array literals with FAST_DOUBLE_ELEMENTS ElementsKind.
BUG=none
TEST=test/mjsunit/array-literal.js

Review URL: http://codereview.chromium.org/8258015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-10-19 11:36:55 +00:00

126 lines
4.4 KiB
JavaScript

// Copyright 2011 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 --expose-gc
// Test element kind of objects.
// Since --smi-only-arrays affects builtins, its default setting at compile
// time sticks if built with snapshot. If --smi-only-arrays is deactivated
// by default, only a no-snapshot build actually has smi-only arrays enabled
// in this test case. Depending on whether smi-only arrays are actually
// enabled, this test takes the appropriate code path to check smi-only arrays.
support_smi_only_arrays = %HasFastSmiOnlyElements(new Array());
// IC and Crankshaft support for smi-only elements in dynamic array literals.
function get(foo) { return foo; } // Used to generate dynamic values.
function array_literal_test() {
var a0 = [1, 2, 3];
assertTrue(%HasFastSmiOnlyElements(a0));
var a1 = [get(1), get(2), get(3)];
assertTrue(%HasFastSmiOnlyElements(a1));
var b0 = [1, 2, get("three")];
assertTrue(%HasFastElements(b0));
var b1 = [get(1), get(2), get("three")];
assertTrue(%HasFastElements(b1));
var c0 = [1, 2, get(3.5)];
assertTrue(%HasFastDoubleElements(c0));
assertEquals(3.5, c0[2]);
assertEquals(2, c0[1]);
assertEquals(1, c0[0]);
var c1 = [1, 2, 3.5];
assertTrue(%HasFastDoubleElements(c1));
assertEquals(3.5, c1[2]);
assertEquals(2, c1[1]);
assertEquals(1, c1[0]);
var c2 = [get(1), get(2), get(3.5)];
assertTrue(%HasFastDoubleElements(c2));
assertEquals(3.5, c2[2]);
assertEquals(2, c2[1]);
assertEquals(1, c2[0]);
var object = new Object();
var d0 = [1, 2, object];
assertTrue(%HasFastElements(d0));
assertEquals(object, d0[2]);
assertEquals(2, d0[1]);
assertEquals(1, d0[0]);
var e0 = [1, 2, 3.5];
assertTrue(%HasFastDoubleElements(e0));
assertEquals(3.5, e0[2]);
assertEquals(2, e0[1]);
assertEquals(1, e0[0]);
var f0 = [1, 2, [1, 2]];
assertTrue(%HasFastElements(f0));
assertEquals([1,2], f0[2]);
assertEquals(2, f0[1]);
assertEquals(1, f0[0]);
}
if (support_smi_only_arrays) {
for (var i = 0; i < 3; i++) {
array_literal_test();
}
%OptimizeFunctionOnNextCall(array_literal_test);
array_literal_test();
function test_large_literal() {
function d() {
gc();
return 2.5;
}
function o() {
gc();
return new Object();
}
large =
[ 0, 1, 2, 3, 4, 5, d(), d(), d(), d(), d(), d(), o(), o(), o(), o() ];
assertFalse(%HasDictionaryElements(large));
assertFalse(%HasFastSmiOnlyElements(large));
assertFalse(%HasFastDoubleElements(large));
assertTrue(%HasFastElements(large));
assertEquals(large,
[0, 1, 2, 3, 4, 5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5,
new Object(), new Object(), new Object(), new Object()]);
}
for (var i = 0; i < 3; i++) {
test_large_literal();
}
%OptimizeFunctionOnNextCall(test_large_literal);
test_large_literal();
}