Michael Thomsen
e4cc3c98e5
TEST=ci Bug: Contributes to https://github.com/dart-lang/sdk/issues/49529 Change-Id: Ic129ef2d89f625d9ec6a7a1c301cffddd60b2ff7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/258920 Reviewed-by: Lasse Nielsen <lrn@google.com> Commit-Queue: Michael Thomsen <mit@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>
34 lines
1.0 KiB
Dart
34 lines
1.0 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Test program for correct optimizations related to types fo allocated lists.
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// VMOptions=--optimization-counter-threshold=10
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// @dart = 2.9
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import "package:expect/expect.dart";
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main() {
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// Trigger optimization of 'test' method.
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for (int i = 0; i < 20; i++) {
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test(2);
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}
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}
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test(n) {
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var a = []; // Growable list.
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var b = new List<dynamic>.filled(10, null); // Fixed size list.
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var c = const [1, 2, 3, 4]; // Constant aray.
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// In optimized mode the class checks will be eliminated since the
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// constructors above provide information about exact types.
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a.add(4);
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b[0] = 5;
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Expect.equals(4, a[0]);
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Expect.equals(5, b[0]);
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// Test bound check elimination.
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Expect.equals(2, c[1]);
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// Test elimination of array length computation.
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var v = c[n];
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Expect.equals(v, c[n]);
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}
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