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sdk/tests/language_2/optimize/deopt_inlined_function_test.dart
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Robert Nystrom fc1b1ecc71 Move files under language_2 into subdirectories.
Change-Id: Idbcc965a27e9ffeedf5e0a1068b019de4193070f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/127745
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
2019-12-11 19:18:00 +00:00

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Dart

// Copyright (c) 2012, 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.
// Test deoptimization from within an inlined function.
import "package:expect/expect.dart";
class A {
deopt_here() => 1;
}
class B {
deopt_here() => 2;
}
dynamic obj = new A();
bar(x) {
x = 42;
obj.deopt_here();
return x;
}
foo(x) {
x = bar(x);
return x;
}
main() {
Expect.equals(42, foo(1));
for (var i = 0; i < 2000; i++) foo(7);
Expect.equals(42, foo(2));
obj = new B();
Expect.equals(42, foo(3)); // <-- deoptimization via foo/bar/obj.deopt_here
}