pkg/compiler/test/codegen/redundant_phi_eliminator_test.dart

// Copyright (c) 2011, 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 = 2.7

import 'package:expect/expect.dart';
import 'package:async_helper/async_helper.dart';
import '../helpers/compiler_helper.dart';

const String TEST_ONE = r"""
void foo(bar) {
  var toBeRemoved = 1;
  if (bar) {
  } else {
  }
  print(toBeRemoved);
}
""";

const String TEST_TWO = r"""
void foo() {
  var temp = 0;
  var toBeRemoved = temp;
  for (var i = 0; i == 0; i = i + 1) {
    toBeRemoved = temp;
  }
  print(toBeRemoved);
}
""";

main() {
  runTests() async {
    await compile(TEST_ONE, entry: 'foo', check: (String generated) {
      RegExp regexp = new RegExp("toBeRemoved");
      Expect.isTrue(!regexp.hasMatch(generated));
    });
    await compile(TEST_TWO, entry: 'foo', check: (String generated) {
      RegExp regexp = new RegExp("toBeRemoved");
      Expect.isTrue(!regexp.hasMatch(generated));
      regexp = new RegExp("temp");
      Expect.isTrue(!regexp.hasMatch(generated));
    });
  }

  asyncTest(() async {
    print('--test from kernel------------------------------------------------');
    await runTests();
  });
}