409d018005
Where the arguments have already been inlined, we can replace these calls with a direct call to construct. We have to make sure that the iteration over the arguments is not observable. BUG=v8:5895 Review-Url: https://codereview.chromium.org/2659623002 Cr-Commit-Position: refs/heads/master@{#42765}
89 lines
1.9 KiB
JavaScript
89 lines
1.9 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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(function() {
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'use strict';
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class Point {
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constructor(x, y) {
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this.x = x;
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this.y = y;
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}
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}
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function testBaselineAndOpt(func) {
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func(1, 2);
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func(1, 2);
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% OptimizeFunctionOnNextCall(func);
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return func(1, 2);
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}
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class RestPoint extends Point {
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constructor(...args) {
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super(...args);
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}
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}
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var r = testBaselineAndOpt(function(x, y) {
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return new RestPoint(x, y);
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});
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assertInstanceof(r, RestPoint);
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assertInstanceof(r, Point);
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assertEquals(r.x, 1);
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assertEquals(r.y, 2);
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class RestExtraPoint extends Point {
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constructor(...args) {
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super(-1, 0, ...args);
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}
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}
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r = testBaselineAndOpt(function(x, y) {
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return new RestExtraPoint(x, y);
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});
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assertInstanceof(r, RestExtraPoint);
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assertInstanceof(r, Point);
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assertEquals(r.x, -1);
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assertEquals(r.y, 0);
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class ArgumentsPoint extends Point {
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constructor() {
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super(...arguments);
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}
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}
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r = testBaselineAndOpt(function(x, y) {
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return new ArgumentsPoint(x, y);
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});
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assertInstanceof(r, ArgumentsPoint);
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assertInstanceof(r, Point);
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assertEquals(r.x, 1);
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assertEquals(r.y, 2);
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class ArgumentsExtraPoint extends Point {
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constructor() {
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super(1, 2, ...arguments);
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}
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}
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r = testBaselineAndOpt(function(x, y) {
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return new ArgumentsExtraPoint(x, y);
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});
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assertInstanceof(r, ArgumentsExtraPoint);
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assertInstanceof(r, Point);
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assertEquals(r.x, 1);
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assertEquals(r.y, 2);
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class LiteralPoint extends Point {
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constructor() {
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super(...[3, 4]);
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}
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}
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r = testBaselineAndOpt(function(x, y) {
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return new LiteralPoint(x, y);
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});
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assertInstanceof(r, LiteralPoint);
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assertInstanceof(r, Point);
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assertEquals(r.x, 3);
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assertEquals(r.y, 4);
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})();
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