| // Copyright (c) 2017, 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 org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.utils.FileUtils; |
| 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 java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class MemberValuePropagationTest extends TestBase { |
| private static final String PACKAGE_NAME = "write_only_field"; |
| private static final String QUALIFIED_CLASS_NAME = PACKAGE_NAME + ".WriteOnlyCls"; |
| private static final Path EXAMPLE_JAR = |
| Paths.get(ToolHelper.EXAMPLES_BUILD_DIR).resolve(PACKAGE_NAME + FileUtils.JAR_EXTENSION); |
| private static final Path EXAMPLE_KEEP = |
| Paths.get(ToolHelper.EXAMPLES_DIR).resolve(PACKAGE_NAME).resolve("keep-rules.txt"); |
| private static final Path DONT_OPTIMIZE = |
| Paths.get(ToolHelper.EXAMPLES_DIR) |
| .resolve(PACKAGE_NAME) |
| .resolve("keep-rules-dontoptimize.txt"); |
| |
| private Backend backend; |
| |
| @Parameterized.Parameters(name = "Backend: {1}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| TestParameters.builder().withNoneRuntime().build(), ToolHelper.getBackends()); |
| } |
| |
| public MemberValuePropagationTest(TestParameters parameters, TestBase.Backend backend) { |
| parameters.assertNoneRuntime(); |
| this.backend = backend; |
| } |
| |
| @Test |
| public void testWriteOnlyField_putObject_gone() throws Exception { |
| CodeInspector inspector = runR8(EXAMPLE_KEEP); |
| ClassSubject clazz = inspector.clazz(QUALIFIED_CLASS_NAME); |
| clazz.forAllMethods( |
| methodSubject -> { |
| assertTrue( |
| methodSubject.streamInstructions().noneMatch( |
| i -> i.isInstancePut() || i.isStaticPut())); |
| }); |
| } |
| |
| @Test |
| public void testWriteOnlyField_dontoptimize() throws Exception { |
| CodeInspector inspector = runR8(DONT_OPTIMIZE); |
| ClassSubject clazz = inspector.clazz(QUALIFIED_CLASS_NAME); |
| // With the support of 'allowshrinking' dontoptimize will effectivelys pin all |
| // items that are not tree shaken out. The field operations will thus remain. |
| assertTrue(clazz.clinit().streamInstructions().anyMatch(InstructionSubject::isStaticPut)); |
| assertTrue( |
| clazz |
| .uniqueInstanceInitializer() |
| .streamInstructions() |
| .anyMatch(InstructionSubject::isInstancePut)); |
| } |
| |
| private CodeInspector runR8(Path proguardConfig) throws Exception { |
| return testForR8(backend) |
| .addProgramFiles(EXAMPLE_JAR) |
| .addKeepRuleFiles(proguardConfig) |
| .addDontObfuscate() |
| .addOptionsModification(o -> o.enableClassInlining = false) |
| .compile() |
| .inspector(); |
| } |
| } |