c9b4f3c4a7
This CL is part of a series that implements Turbofan support for property accesses satisfying the following conditions: 1. The holder is a dictionary mode object. 2. The holder is a prototype. 3. The access is a load. This feature will only be enabled if the build flag v8_dict_property_const_tracking is set. This particular CL modifies existing mjsunit tests whose assumptions don't hold if v8_dict_property_const_tracking is enabled. This is done by adding special handling for the case that %IsDictPropertyConstTrackingEnabled() holds. Bug: v8:11248 Change-Id: Ia36be73e4659a988b2471f0c8151b0442f3a98f5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2780292 Commit-Queue: Igor Sheludko <ishell@chromium.org> Reviewed-by: Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#73745}
60 lines
1.2 KiB
JavaScript
60 lines
1.2 KiB
JavaScript
// Copyright 2019 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 --opt --no-always-opt
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var expect_interpreted = true;
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function C() {
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this.a = 1;
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assertEquals(expect_interpreted, %IsBeingInterpreted());
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if (!%IsDictPropertyConstTrackingEnabled()) {
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// TODO(v8:11457) If v8_dict_property_const_tracking is enabled, then the
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// prototype of |this| in D() is a dictionary mode object, and we cannot
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// inline the storing of this.x, yet.
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%TurbofanStaticAssert(this.x == 42);
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}
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};
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function D() {
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this.x = 42;
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C.call(this);
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};
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function E() {
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D.call(this);
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}
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function F() {
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E.call(this);
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};
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function G() {
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F.call(this);
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};
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function foo() {
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new D;
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}
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%PrepareFunctionForOptimization(C);
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%PrepareFunctionForOptimization(D);
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%PrepareFunctionForOptimization(E);
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%PrepareFunctionForOptimization(F);
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%PrepareFunctionForOptimization(G);
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%PrepareFunctionForOptimization(foo);
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// Make 'this.x' access in C megamorhpic.
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var c = new C;
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var d = new D;
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var e = new E;
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var f = new F;
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var g = new G;
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foo();
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foo();
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%OptimizeFunctionOnNextCall(foo);
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expect_interpreted = false;
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foo();
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