c6a16c10dd
With bytecode flushing and lazy feedback allocation, we need to call %PrepareForOptimization before we call %OptimizeFunctionOnNextCall, ideally after declaring the function. Bug: v8:8801, v8:8394, v8:9183 Change-Id: I3fb257282a30f6526a376a3afdedb44786320d34 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1648255 Commit-Queue: Mathias Bynens <mathias@chromium.org> Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#62119}
87 lines
1.7 KiB
JavaScript
87 lines
1.7 KiB
JavaScript
// Copyright 2016 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 TestDeoptFromComputedNameInObjectLiteral() {
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function f() {
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var o = {
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toString: function() {
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%DeoptimizeFunction(f);
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return "x";
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}
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};
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return {
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[o]() {
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return 23;
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}
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};
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};
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%PrepareFunctionForOptimization(f);
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assertEquals(23, f().x());
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assertEquals(23, f().x());
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%OptimizeFunctionOnNextCall(f);
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assertEquals(23, f().x());
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})();
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(function TestDeoptFromComputedNameInObjectLiteralWithModifiedPrototype() {
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// The prototype chain should not be used if the definition
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// happens in the object literal.
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Object.defineProperty(Object.prototype, 'x_proto', {
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get: function() {
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return 21;
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},
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set: function() {}
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});
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function f() {
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var o = {
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toString: function() {
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%DeoptimizeFunction(f);
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return "x_proto";
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}
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};
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return {
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[o]() {
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return 23;
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}
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};
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};
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%PrepareFunctionForOptimization(f);
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assertEquals(23, f().x_proto());
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assertEquals(23, f().x_proto());
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%OptimizeFunctionOnNextCall(f);
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assertEquals(23, f().x_proto());
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delete Object.prototype.c;
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})();
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(function TestDeoptFromComputedNameInClassLiteral() {
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function g() {
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var o = {
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toString: function() {
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%DeoptimizeFunction(g);
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return "y";
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}
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};
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class C {
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[o]() {
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return 42;
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}
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}
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return new C();
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};
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%PrepareFunctionForOptimization(g);
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assertEquals(42, g().y());
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assertEquals(42, g().y());
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%OptimizeFunctionOnNextCall(g);
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assertEquals(42, g().y());
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})();
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