dart-sdk/tests/language/optimize/cha_deopt2_test.dart
Robert Nystrom c959c9aba7 Migrate language_2/optimize to NNBD.
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>
2020-06-06 01:42:35 +00:00

41 lines
1.1 KiB
Dart

// Copyright (c) 2014, 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=100 --no-background-compilation
// VMOptions=--optimization-counter-threshold=100 --no-background-compilation --no-use-field-guards
// Test lazy deoptimization at type checks with deferred loading.
import "package:expect/expect.dart";
import "cha_deopt2_lib.dart";
import "cha_deopt2_deferred_lib.dart" deferred as d;
var loaded = false;
main() {
for (var i = 0; i < 2000; i++) bla();
Expect.equals(1, bla());
d.loadLibrary().then((_) {
loaded = true;
Expect.equals(1, bla());
});
}
make_array() {
try {
if (loaded) {
return [new A(), new B(), new C(), new D(), new E(), d.make_u()];
} else {
return [new A(), new B(), new C(), new D(), new E(), new T()];
}
} catch (e) {}
}
bla() {
var count = 0;
for (var x in make_array()) {
if (x is T) count++;
}
return count;
}