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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function testDoubleElements() {
function f(src) { return {...src}; }
var src = [1.5];
src[0] = 1;
// Uninitialized
assertEquals({ 0: 1 }, f(src));
src[0] = 1.3;
// Monomorphic
assertEquals({ 0: 1.3 }, f(src));
})();
(function testInObjectProperties() {
function f(src) { return {...src}; }
function C() { this.foo = "foo"; }
var src;
for (var i = 0; i < 10; ++i) {
src = new C();
}
// Uninitialized
assertEquals({ foo: "foo" }, f(src));
// Monomorphic
assertEquals({ foo: "foo" }, f(src));
})();
(function testInObjectProperties2() {
function f(src) { return {...src}; }
function C() {
this.foo = "foo";
this.p0 = "0";
this.p1 = "1";
this.p2 = "2";
this.p3 = "3";
}
var src;
for (var i = 0; i < 10; ++i) {
src = new C();
}
// Uninitialized
assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(src));
// Monomorphic
assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(src));
})();
(function testPolymorphicToMegamorphic() {
function f(src) { return {...src}; }
function C1() {
this.foo = "foo";
this.p0 = "0";
this.p1 = "1";
this.p2 = "2";
this.p3 = "3";
}
function C2() {
this.p0 = "0";
this.p1 = "1";
this[0] = 0;
}
function C3() {
this.x = 774;
this.y = 663;
this.rgb = 0xFF00FF;
}
function C4() {
this.qqq = {};
this.v_1 = [];
this.name = "C4";
this.constructor = C4;
}
// Uninitialized
assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(new C1()));
// Monomorphic
assertEquals({ foo: "foo", p0: "0", p1: "1", p2: "2", p3: "3" }, f(new C1()));
// Polymorphic (2)
assertEquals({ 0: 0, p0: "0", p1: "1" }, f(new C2()));
assertEquals({ 0: 0, p0: "0", p1: "1" }, f(new C2()));
// Polymorphic (3)
assertEquals({ x: 774, y: 663, rgb: 0xFF00FF }, f(new C3()));
assertEquals({ x: 774, y: 663, rgb: 0xFF00FF }, f(new C3()));
// Polymorphic (4)
assertEquals({ qqq: {}, v_1: [], name: "C4", constructor: C4 }, f(new C4()));
assertEquals({ qqq: {}, v_1: [], name: "C4", constructor: C4 }, f(new C4()));
// Megamorphic
assertEquals({ boop: 1 }, f({ boop: 1 }));
})();
// There are 2 paths in CloneObjectIC's handler which need to handle double
// fields specially --- in object properties, and copying the property array.
function testMutableInlineProperties() {
function inobject() { "use strict"; this.x = 1.1; }
const src = new inobject();
const x0 = src.x;
const clone = { ...src, x: x0 + 1 };
assertEquals(x0, src.x);
assertEquals({ x: 2.1 }, clone);
}
testMutableInlineProperties()
function testMutableOutOfLineProperties() {
const src = { a: 1, b: 2, c: 3 };
src.x = 2.3;
const x0 = src.x;
const clone = { ...src, x: x0 + 1 };
assertEquals(x0, src.x);
assertEquals({ a: 1, b: 2, c: 3, x: 3.3 }, clone);
}
testMutableOutOfLineProperties();
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