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![Leaf Petersen](/assets/img/avatar_default.png)
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
92 lines
2 KiB
Dart
92 lines
2 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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//
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// We are using --complete-timeline below to ensure that we get timeline events
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// generated during all phases of compilation and deoptimization.
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// VMOptions=--optimization_counter_threshold=10 --no-use-osr --complete-timeline --no-background_compilation
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// @dart = 2.9
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import "package:expect/expect.dart";
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test1(a, start, step, N) {
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var e;
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for (var i = 0; i < N; i++) {
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e = a[start + i * step];
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}
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return e;
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}
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test2(a, b) {
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var e;
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for (var i = 0, j = 0, k = 0; i < a.length; i++, j++, k++) {
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e = b[k] = a[j];
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}
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return e;
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}
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test3(a, b) {
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var e;
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for (var i = 0, j = 1, k = 0; i < a.length - 1; i++, j++, k++) {
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e = b[k] = a[j - 1];
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}
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return e;
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}
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test4(a, b) {
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var e;
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if (a.length < 2) {
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return null;
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}
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for (var i = 0, j = 1, k = 0; i < a.length - 1; i++, j++, k++) {
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e = b[k] = a[j - 1];
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}
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return e;
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}
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test5(a, b, k0) {
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var e;
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if (a.length < 2) {
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return null;
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}
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if (k0 > 1) {
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return null;
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}
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for (var i = 0, j = 1, k = 0; i < a.length - 1; i++, j++, k++) {
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e = b[k - k0] = a[j - 1];
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}
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return e;
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}
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test6(a, M, N) {
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var e = 0;
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for (var i = 0; i < N; i++) {
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for (var j = 0; j < M; j++) {
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e += a[i * M + j];
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}
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}
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return e;
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}
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main() {
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var a = const [0, 1, 2, 3, 4, 5, 6, 7];
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var b = new List(a.length);
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for (var i = 0; i < 10000; i++) {
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Expect.equals(a.last, test1(a, 0, 1, a.length));
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Expect.equals(a.last, test2(a, b));
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Expect.equals(a[a.length - 2], test3(a, b));
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Expect.equals(a[a.length - 2], test4(a, b));
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Expect.equals(a[a.length - 2], test5(a, b, 0));
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Expect.equals(6, test6(a, 2, 2));
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}
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test1(a, 0, 2, a.length ~/ 2);
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Expect.throws(() => test1(a, 1, 1, a.length));
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Expect.throws(() => test2(a, new List(a.length - 1)));
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Expect.throws(() => test6(a, 4, 3));
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}
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