| // 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.classmerger.vertical; |
| |
| import static org.junit.Assume.assumeFalse; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.R8TestBuilder; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.transformers.ClassFileTransformer.MethodPredicate; |
| import com.android.tools.r8.utils.BooleanUtils; |
| import java.io.IOException; |
| import java.util.List; |
| 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 InstancePutToInterfaceWithObjectMergingTest extends TestBase { |
| |
| @Parameter(0) |
| public boolean enableVerticalClassMerging; |
| |
| @Parameter(1) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{1}, vertical class merging: {0}") |
| public static List<Object[]> parameters() { |
| return buildParameters( |
| BooleanUtils.values(), getTestParameters().withAllRuntimesAndApiLevels().build()); |
| } |
| |
| @Test |
| public void testRuntime() throws Exception { |
| assumeFalse(enableVerticalClassMerging); |
| testForRuntime(parameters) |
| .addProgramClasses(I.class, A.class) |
| .addProgramClassFileData(getTransformedMain()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A"); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(I.class, A.class) |
| .addProgramClassFileData(getTransformedMain()) |
| .addKeepMainRule(Main.class) |
| // Keep get() to prevent that we optimize it into having static return type A. |
| .addKeepRules("-keepclassmembers class " + Main.class.getTypeName() + " { *** get(...); }") |
| .addNoVerticalClassMergingAnnotations() |
| .applyIf( |
| !enableVerticalClassMerging, R8TestBuilder::enableNoVerticalClassMergingAnnotations) |
| .addVerticallyMergedClassesInspector( |
| inspector -> { |
| if (enableVerticalClassMerging) { |
| inspector.assertMergedIntoSubtype(I.class); |
| } else { |
| inspector.assertNoClassesMerged(); |
| } |
| }) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A"); |
| } |
| |
| private static byte[] getTransformedMain() throws IOException { |
| return transformer(Main.class) |
| .transformMethodInsnInMethod( |
| "main", |
| (opcode, owner, name, descriptor, isInterface, visitor) -> { |
| if (name.equals("get")) { |
| visitor.visitMethodInsn(opcode, owner, name, "()Ljava/lang/Object;", isInterface); |
| } else { |
| visitor.visitMethodInsn(opcode, owner, name, descriptor, isInterface); |
| } |
| }) |
| .setReturnType(MethodPredicate.onName("get"), Object.class.getTypeName()) |
| .transform(); |
| } |
| |
| static class Main { |
| |
| I f; |
| |
| public static void main(String[] args) { |
| Main main = new Main(); |
| // Transformed from `I get()` to `Object get()`. |
| main.f = get(); |
| print(main); |
| } |
| |
| // @Keep |
| static /*Object*/ I get() { |
| return new A(); |
| } |
| |
| @NeverInline |
| static void print(Main main) { |
| System.out.println(main.f); |
| } |
| } |
| |
| @NoVerticalClassMerging |
| interface I {} |
| |
| static class A implements I { |
| |
| @Override |
| public String toString() { |
| return "A"; |
| } |
| } |
| } |