| // Copyright (c) 2021, the R8 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. |
| |
| package com.android.tools.r8.ir.optimize.instanceofremoval; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class InstanceOfToNullCheckRewritingTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(inspector -> assertThat(inspector.clazz(I.class), isPresent())) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("true", "false"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| A nonNullA = System.currentTimeMillis() >= 0 ? new A() : null; |
| A nullA = System.currentTimeMillis() < 0 ? new A() : null; |
| System.out.println(nonNullA instanceof I); |
| System.out.println(nullA instanceof I); |
| } |
| } |
| |
| @NoVerticalClassMerging |
| interface I {} |
| |
| static class A implements I {} |
| } |