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2dcc3665ab
PR-URL: https://github.com/nodejs/node/pull/28016 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
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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