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}
64 lines
1.2 KiB
JavaScript
64 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
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(function NonExtensibleBetweenSetterAndGetter() {
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o = {};
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o.x = 42;
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o.__defineGetter__('y', function() {});
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Object.preventExtensions(o);
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o.__defineSetter__('y', function() {});
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o.x = 0.1;
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})();
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(function InterleavedIntegrityLevel() {
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o = {};
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o.x = 42;
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o.__defineSetter__('y', function() {});
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Object.preventExtensions(o);
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o.__defineGetter__('y', function() {
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return 44;
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});
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Object.seal(o);
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o.x = 0.1;
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assertEquals(44, o.y);
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})();
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(function TryUpdateRepeatedIntegrityLevel() {
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function C() {
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this.x = 0;
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this.x = 1;
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Object.preventExtensions(this);
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Object.seal(this);
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}
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const o1 = new C();
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const o2 = new C();
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const o3 = new C();
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function f(o) {
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return o.x;
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}
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// Warm up the IC.
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;
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%PrepareFunctionForOptimization(f);
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f(o1);
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f(o1);
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f(o1);
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// Reconfigure to double field.
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o3.x = 0.1;
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// Migrate o2 to the new shape.
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f(o2);
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%OptimizeFunctionOnNextCall(f);
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f(o1);
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assertTrue(%HaveSameMap(o1, o2));
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assertTrue(%HaveSameMap(o1, o3));
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})();
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