Robert Nystrom
2034061433
Change-Id: I313a57ed7c7ea2ada75065f55a7367376f6bdae5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152183 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com>
30 lines
797 B
Dart
30 lines
797 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 identical comparisons in optimized code. Registers must be preserved
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// when calling the runtime.
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cmp(a, b, c) {
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var v = c + 1;
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var w = v + 1;
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var x = w + 1;
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var y = x + 1;
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var z = y + 1;
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if (identical(a, b)) {
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c++;
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}
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return c + v + w + x + y + z;
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}
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main() {
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var str = "abc";
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var before = cmp(str, str, 0);
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Expect.equals(16, before);
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for (var i = 0; i < 20; i++) cmp(str, str, 0);
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Expect.equals(before, cmp(str, str, 0));
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}
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