e4669a9c32
This is reland of https://chromium-review.googlesource.com/c/v8/v8/+/1575036 which the flaky test is fixed by moving '%PrepareFunctionForOptimization' around Bug: v8:6831 Change-Id: I0e8c3d2452b14c86e8ff0851e1840294734435e2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1582481 Reviewed-by: Simon Zünd <szuend@chromium.org> Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com> Cr-Commit-Position: refs/heads/master@{#61050}
124 lines
3.0 KiB
JavaScript
124 lines
3.0 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 --no-always-opt --opt
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// Check that we properly deoptimize TurboFan'ed code when we constant-fold
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// elements from a COW array and we change the length of the array.
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(function() {
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const a = [1, 2, 3];
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a.length = 1;
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assertEquals(1, foo());
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assertUnoptimized(foo);
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})();
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// Check that we properly deoptimize TurboFan'ed code when we constant-fold
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// elements from a COW array and we change the element of the array.
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(function() {
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const a = [1, 2, 3];
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(42, foo());
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assertUnoptimized(foo);
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})();
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// Packed
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// Non-extensible
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(function() {
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const a = Object.preventExtensions([1, 2, '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(42, foo());
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})();
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// Sealed
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(function() {
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const a = Object.seal([1, 2, '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(42, foo());
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})();
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// Frozen
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(function() {
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const a = Object.freeze([1, 2, '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(1, foo());
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})();
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// Holey
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// Non-extensible
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(function() {
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const a = Object.preventExtensions([1, 2, , '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(42, foo());
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})();
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// Sealed
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(function() {
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const a = Object.seal([1, 2, , '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(42, foo());
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})();
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// Frozen
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(function() {
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const a = Object.freeze([1, 2, , '3']);
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const foo = () => a[0];
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%PrepareFunctionForOptimization(foo);
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assertEquals(1, foo());
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assertEquals(1, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(1, foo());
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assertOptimized(foo);
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a[0] = 42;
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assertEquals(1, foo());
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})();
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