| // 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.membervaluepropagation; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| 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 org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class EnumMemberValuePropagationTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public EnumMemberValuePropagationTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(EnumMemberValuePropagationTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject testClassSubject = inspector.clazz(TestClass.class); |
| assertThat(testClassSubject, isPresent()); |
| assertThat( |
| testClassSubject.uniqueMethodWithName("deadDueToFieldValuePropagation"), not(isPresent())); |
| assertThat( |
| testClassSubject.uniqueMethodWithName("deadDueToReturnValuePropagation"), not(isPresent())); |
| |
| // Verify that there are no more conditional instructions. |
| MethodSubject mainMethodSubject = testClassSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| assertTrue(mainMethodSubject.streamInstructions().noneMatch(InstructionSubject::isIf)); |
| } |
| |
| static class TestClass { |
| |
| static MyEnum INSTANCE = MyEnum.A; |
| |
| public static void main(String[] args) { |
| if (INSTANCE == MyEnum.A) { |
| System.out.print("Hello"); |
| } else { |
| deadDueToFieldValuePropagation(); |
| } |
| if (get() == MyEnum.A) { |
| System.out.println(" world!"); |
| } else { |
| deadDueToReturnValuePropagation(); |
| } |
| } |
| |
| @NeverInline |
| static MyEnum get() { |
| return MyEnum.A; |
| } |
| |
| @NeverInline |
| static void deadDueToFieldValuePropagation() { |
| throw new RuntimeException(); |
| } |
| |
| @NeverInline |
| static void deadDueToReturnValuePropagation() { |
| throw new RuntimeException(); |
| } |
| } |
| |
| enum MyEnum { |
| A, |
| B |
| } |
| } |