Robert Nystrom
c959c9aba7
Change-Id: I3f67dd79ff2ee745cc2ea161ce7150630e805c97 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150186 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com>
35 lines
889 B
Dart
35 lines
889 B
Dart
// Copyright (c) 2013, 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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// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
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import "package:expect/expect.dart";
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// Test that constant propagation correctly updates phis when predecessor's
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// reachability changes.
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final keys = const ["keyA"];
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final values = const ["a"];
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main() {
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for (var i = 0; i < 20; i++) test(keys[0]);
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}
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test(key) {
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var ref = key2value(key);
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Expect.equals("a", (ref == null) ? "-" : ref);
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}
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key2value(key) {
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var index = indexOf(keys, key);
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return (index == -1) ? null : values[index];
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}
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indexOf(keys, key) {
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for (var i = keys.length - 1; i >= 0; i--) {
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var equals = keys[i] == key;
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if (equals) return i;
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}
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return -1;
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}
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