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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 --expose-gc --ignition-osr
// 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(%HasFastSmiElements(a0));
var a1 = [get(1), get(2), get(3)];
assertTrue(%HasFastSmiElements(a1));
var b0 = [1, 2, get("three")];
assertTrue(%HasFastObjectElements(b0));
var b1 = [get(1), get(2), get("three")];
assertTrue(%HasFastObjectElements(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(%HasFastObjectElements(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(%HasFastObjectElements(f0));
assertEquals([1,2], f0[2]);
assertEquals(2, f0[1]);
assertEquals(1, f0[0]);
}
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(%HasFastSmiElements(large));
assertFalse(%HasFastDoubleElements(large));
assertTrue(%HasFastObjectElements(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();
function deopt_array(use_literal) {
if (use_literal) {
return [.5, 3, 4];
} else {
return new Array();
}
}
deopt_array(false);
deopt_array(false);
deopt_array(false);
%OptimizeFunctionOnNextCall(deopt_array);
var array = deopt_array(false);
assertOptimized(deopt_array);
deopt_array(true);
assertOptimized(deopt_array);
array = deopt_array(false);
assertOptimized(deopt_array);
// Check that unexpected changes in the objects stored into the boilerplate
// also force a deopt.
function deopt_array_literal_all_smis(a) {
return [0, 1, a];
}
deopt_array_literal_all_smis(2);
deopt_array_literal_all_smis(3);
deopt_array_literal_all_smis(4);
array = deopt_array_literal_all_smis(4);
assertEquals(0, array[0]);
assertEquals(1, array[1]);
assertEquals(4, array[2]);
%OptimizeFunctionOnNextCall(deopt_array_literal_all_smis);
array = deopt_array_literal_all_smis(5);
array = deopt_array_literal_all_smis(6);
assertOptimized(deopt_array_literal_all_smis);
assertEquals(0, array[0]);
assertEquals(1, array[1]);
assertEquals(6, array[2]);
array = deopt_array_literal_all_smis(.5);
assertUnoptimized(deopt_array_literal_all_smis);
assertEquals(0, array[0]);
assertEquals(1, array[1]);
assertEquals(.5, array[2]);
function deopt_array_literal_all_doubles(a) {
return [0.5, 1, a];
}
deopt_array_literal_all_doubles(.5);
deopt_array_literal_all_doubles(.5);
deopt_array_literal_all_doubles(.5);
array = deopt_array_literal_all_doubles(0.5);
assertEquals(0.5, array[0]);
assertEquals(1, array[1]);
assertEquals(0.5, array[2]);
%OptimizeFunctionOnNextCall(deopt_array_literal_all_doubles);
array = deopt_array_literal_all_doubles(5);
array = deopt_array_literal_all_doubles(6);
assertOptimized(deopt_array_literal_all_doubles);
assertEquals(0.5, array[0]);
assertEquals(1, array[1]);
assertEquals(6, array[2]);
var foo = new Object();
array = deopt_array_literal_all_doubles(foo);
assertUnoptimized(deopt_array_literal_all_doubles);
assertEquals(0.5, array[0]);
assertEquals(1, array[1]);
assertEquals(foo, array[2]);
(function literals_after_osr() {
var color = [0];
// Trigger OSR, if optimization is not disabled.
if (%GetOptimizationStatus(literals_after_osr) != 4) {
while (%GetOptimizationCount(literals_after_osr) == 0) {}
}
return [color[0]];
})();
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