| // Copyright (c) 2019, 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; |
| |
| import static com.android.tools.r8.utils.codeinspector.CodeMatchers.invokesMethod; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertNotEquals; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.BooleanUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class OptimizationSummaryForKeptMethodTest extends TestBase { |
| |
| private final boolean enableExtraKeepRule; |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{1}, enable extra keep rule: {0}") |
| public static List<Object[]> params() { |
| return buildParameters(BooleanUtils.values(), getTestParameters().withAllRuntimes().build()); |
| } |
| |
| public OptimizationSummaryForKeptMethodTest( |
| boolean enableExtraKeepRule, TestParameters parameters) { |
| this.enableExtraKeepRule = enableExtraKeepRule; |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(OptimizationSummaryForKeptMethodTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addKeepClassAndMembersRules( |
| (Class<?>[]) (enableExtraKeepRule ? new Class<?>[] {KeptClass.class} : new Class<?>[0])) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getRuntime()) |
| .compile() |
| .inspect(this::verifyOutput); |
| } |
| |
| private void verifyOutput(CodeInspector inspector) { |
| ClassSubject testClassSubject = inspector.clazz(TestClass.class); |
| assertThat(testClassSubject, isPresent()); |
| |
| MethodSubject mainMethodSubject = testClassSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| |
| // Main method invokes noNormalExits() since it is not allowed to be inlined. |
| assertThat( |
| mainMethodSubject, |
| invokesMethod( |
| inspector.clazz(KeptClass.class).uniqueMethodWithOriginalName("noNormalExits"))); |
| |
| // The fact that noNormalExits() never returns normally has only been exploited if it is not |
| // kept. |
| assertNotEquals( |
| enableExtraKeepRule, |
| mainMethodSubject.streamInstructions().anyMatch(InstructionSubject::isThrow)); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| try { |
| KeptClass.noNormalExits(); |
| System.out.println(" world!"); |
| } catch (Exception e) { |
| System.out.println("Caught " + e.getClass().getName()); |
| } |
| } |
| } |
| |
| static class KeptClass { |
| |
| @NeverInline |
| public static void noNormalExits() { |
| throw new RuntimeException(); |
| } |
| } |
| } |