blob: 342fb23c100f0e43c68044bacdedf5a12c987d8a [file] [log] [blame]
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
// @dart = 2.9
import "package:expect/expect.dart";
// Test identical comparisons in optimized code. Registers must be preserved
// when calling the runtime.
cmp(a, b, c) {
var v = c + 1;
var w = v + 1;
var x = w + 1;
var y = x + 1;
var z = y + 1;
if (identical(a, b)) {
c++;
}
return c + v + w + x + y + z;
}
main() {
var str = "abc";
var before = cmp(str, str, 0);
Expect.equals(16, before);
for (var i = 0; i < 20; i++) cmp(str, str, 0);
Expect.equals(before, cmp(str, str, 0));
}