runtime/tests/vm/dart_2/deopt/instantiate_type_arguments_test.dart

// Copyright (c) 2021, 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.

// @dart = 2.9

// VMOptions=--disable-dart-dev --deoptimize-on-runtime-call-every=1 --deterministic --optimization-counter-threshold=1 --deoptimize-on-runtime-call-name-filter=InstantiateTypeArguments

main() {
  final a = A<int>();
  for (int i = 0; i < 20; ++i) {
    final m = a.foo<double>();
    if (m is! Map<int, double>) throw 'a';
  }
}

class A<T> {
  @pragma('vm:never-inline')
  Map foo<H>() => <T, H>{};
}