Javascript
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301行
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9.82 KB
// 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
// IC and Crankshaft support for smi-only elements in dynamic array literals.
function get(foo) { return foo; } // Used to generate dynamic values.
function array_natives_test() {
// Ensure small array literals start in specific element kind mode.
assertTrue(%HasFastSmiElements([]));
assertTrue(%HasFastSmiElements([1]));
assertTrue(%HasFastSmiElements([1,2]));
assertTrue(%HasFastDoubleElements([1.1]));
assertTrue(%HasFastDoubleElements([1.1,2]));
// This code exists to eliminate the learning influence of AllocationSites
// on the following tests.
var __sequence = 0;
function make_array_string(literal) {
this.__sequence = this.__sequence + 1;
return "/* " + this.__sequence + " */ " + literal;
}
function make_array(literal) {
return eval(make_array_string(literal));
}
// Push
var a0 = make_array("[1, 2, 3]");
assertTrue(%HasFastSmiElements(a0));
a0.push(4);
assertTrue(%HasFastSmiElements(a0));
a0.push(1.3);
assertTrue(%HasFastDoubleElements(a0));
a0.push(1.5);
assertTrue(%HasFastDoubleElements(a0));
a0.push({});
assertTrue(%HasFastObjectElements(a0));
a0.push({});
assertTrue(%HasFastObjectElements(a0));
assertEquals([1,2,3,4,1.3,1.5,{},{}], a0);
// Concat
var a1;
a1 = [1,2,3].concat([]);
assertTrue(%HasFastSmiElements(a1));
assertEquals([1,2,3], a1);
a1 = [1,2,3].concat([4,5,6]);
assertTrue(%HasFastSmiElements(a1));
assertEquals([1,2,3,4,5,6], a1);
a1 = [1,2,3].concat([4,5,6], [7,8,9]);
assertTrue(%HasFastSmiElements(a1));
assertEquals([1,2,3,4,5,6,7,8,9], a1);
a1 = [1.1,2,3].concat([]);
assertTrue(%HasFastDoubleElements(a1));
assertEquals([1.1,2,3], a1);
a1 = [1,2,3].concat([1.1, 2]);
assertTrue(%HasFastDoubleElements(a1));
assertEquals([1,2,3,1.1,2], a1);
a1 = [1.1,2,3].concat([1, 2]);
assertTrue(%HasFastDoubleElements(a1));
assertEquals([1.1,2,3,1,2], a1);
a1 = [1.1,2,3].concat([1.2, 2]);
assertTrue(%HasFastDoubleElements(a1));
assertEquals([1.1,2,3,1.2,2], a1);
a1 = [1,2,3].concat([{}]);
assertTrue(%HasFastObjectElements(a1));
assertEquals([1,2,3,{}], a1);
a1 = [1.1,2,3].concat([{}]);
assertTrue(%HasFastObjectElements(a1));
assertEquals([1.1,2,3,{}], a1);
a1 = [{}].concat([1,2,3]);
assertTrue(%HasFastObjectElements(a1));
assertEquals([{},1,2,3], a1);
a1 = [{}].concat([1.1,2,3]);
assertTrue(%HasFastObjectElements(a1));
assertEquals([{},1.1,2,3], a1);
// Slice
var a2 = [1,2,3];
assertTrue(%HasFastSmiElements(a2.slice()));
assertTrue(%HasFastSmiElements(a2.slice(1)));
assertTrue(%HasFastSmiElements(a2.slice(1, 2)));
assertEquals([1,2,3], a2.slice());
assertEquals([2,3], a2.slice(1));
assertEquals([2], a2.slice(1,2));
a2 = [1.1,2,3];
assertTrue(%HasFastDoubleElements(a2.slice()));
assertTrue(%HasFastDoubleElements(a2.slice(1)));
assertTrue(%HasFastDoubleElements(a2.slice(1, 2)));
assertEquals([1.1,2,3], a2.slice());
assertEquals([2,3], a2.slice(1));
assertEquals([2], a2.slice(1,2));
a2 = [{},2,3];
assertTrue(%HasFastObjectElements(a2.slice()));
assertTrue(%HasFastObjectElements(a2.slice(1)));
assertTrue(%HasFastObjectElements(a2.slice(1, 2)));
assertEquals([{},2,3], a2.slice());
assertEquals([2,3], a2.slice(1));
assertEquals([2], a2.slice(1,2));
// Splice
var a3 = [1,2,3];
var a3r;
a3r = a3.splice(0, 0);
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastSmiElements(a3));
assertEquals([], a3r);
assertEquals([1, 2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 1);
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastSmiElements(a3));
assertEquals([1], a3r);
assertEquals([2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 0, 2);
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastSmiElements(a3));
assertEquals([], a3r);
assertEquals([2, 1, 2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 1, 2);
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastSmiElements(a3));
assertEquals([1], a3r);
assertEquals([2, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 0);
assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([], a3r);
assertEquals([1.1, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 1);
assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([1.1], a3r);
assertEquals([2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 0, 2);
// Commented out since handled in js, which takes the best fit.
// assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([], a3r);
assertEquals([2, 1.1, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 1, 2);
assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([1.1], a3r);
assertEquals([2, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 0, 2.1);
// Commented out since handled in js, which takes the best fit.
// assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([], a3r);
assertEquals([2.1, 1.1, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 1, 2.2);
assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([1.1], a3r);
assertEquals([2.2, 2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 0, 2.1);
// Commented out since handled in js, which takes the best fit.
// assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastSmiElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([], a3r);
assertEquals([2.1, 1, 2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 1, 2.2);
assertTrue(%HasFastDoubleElements(a3r));
assertTrue(%HasFastDoubleElements(a3));
assertEquals([1], a3r);
assertEquals([2.2, 2, 3], a3);
a3 = [{},2,3];
a3r = a3.splice(0, 0);
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([], a3r);
assertEquals([{}, 2, 3], a3);
a3 = [1,2,{}];
a3r = a3.splice(0, 1);
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([1], a3r);
assertEquals([2, {}], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 0, {});
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([], a3r);
assertEquals([{}, 1, 2, 3], a3);
a3 = [1,2,3];
a3r = a3.splice(0, 1, {});
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([1], a3r);
assertEquals([{}, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 0, {});
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([], a3r);
assertEquals([{}, 1.1, 2, 3], a3);
a3 = [1.1,2,3];
a3r = a3.splice(0, 1, {});
assertTrue(%HasFastObjectElements(a3r));
assertTrue(%HasFastObjectElements(a3));
assertEquals([1.1], a3r);
assertEquals([{}, 2, 3], a3);
// Pop
var a4 = [1,2,3];
assertEquals(3, a4.pop());
assertTrue(%HasFastSmiElements(a4));
a4 = [1.1,2,3];
assertEquals(3, a4.pop());
assertTrue(%HasFastDoubleElements(a4));
a4 = [{},2,3];
assertEquals(3, a4.pop());
assertTrue(%HasFastObjectElements(a4));
// Shift
var a4 = [1,2,3];
assertEquals(1, a4.shift());
assertTrue(%HasFastSmiElements(a4));
a4 = [1.1,2,3];
assertEquals(1.1, a4.shift());
assertTrue(%HasFastDoubleElements(a4));
a4 = [{},2,3];
assertEquals({}, a4.shift());
assertTrue(%HasFastObjectElements(a4));
// Unshift
var a4 = [1,2,3];
a4.unshift(1);
assertTrue(%HasFastSmiElements(a4));
assertEquals([1,1,2,3], a4);
a4 = [1,2,3];
a4.unshift(1.1);
// TODO(verwaest): We'll want to support double unshifting as well.
// assertTrue(%HasFastDoubleElements(a4));
assertTrue(%HasFastObjectElements(a4));
assertEquals([1.1,1,2,3], a4);
a4 = [1.1,2,3];
a4.unshift(1);
// assertTrue(%HasFastDoubleElements(a4));
assertTrue(%HasFastObjectElements(a4));
assertEquals([1,1.1,2,3], a4);
a4 = [{},2,3];
a4.unshift(1);
assertTrue(%HasFastObjectElements(a4));
assertEquals([1,{},2,3], a4);
a4 = [{},2,3];
a4.unshift(1.1);
assertTrue(%HasFastObjectElements(a4));
assertEquals([1.1,{},2,3], a4);
}
for (var i = 0; i < 3; i++) {
array_natives_test();
}
%OptimizeFunctionOnNextCall(array_natives_test);
array_natives_test();