| // Copyright (c) 2023, 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.profile.art.completeness; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.onlyIf; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.profile.art.model.ExternalArtProfile; |
| import com.android.tools.r8.profile.art.utils.ArtProfileInspector; |
| import com.android.tools.r8.references.Reference; |
| import com.android.tools.r8.synthesis.SyntheticItemsTestUtils; |
| import com.android.tools.r8.utils.MethodReferenceUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import java.util.Collections; |
| 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 SyntheticLambdaClassProfileRewritingTest extends TestBase { |
| |
| private enum ArtProfileInputOutput { |
| MAIN_METHOD, |
| LAMBDA_BRIDGE_METHOD; |
| |
| public ExternalArtProfile getArtProfile() { |
| switch (this) { |
| case MAIN_METHOD: |
| // Profile containing Main.main(). Should be rewritten to include the two lambda classes |
| // and their constructors. |
| return ExternalArtProfile.builder() |
| .addMethodRule(MethodReferenceUtils.mainMethod(Main.class)) |
| .build(); |
| case LAMBDA_BRIDGE_METHOD: |
| // Profile containing the two lambda implementation methods, Main.lambda$main${0,1}. |
| // Should be rewritten to include the two lambda accessibility bridge methods. |
| return ExternalArtProfile.builder() |
| .addMethodRule( |
| Reference.method( |
| Reference.classFromClass(Main.class), |
| "lambda$main$0", |
| Collections.emptyList(), |
| null)) |
| .addMethodRule( |
| Reference.method( |
| Reference.classFromClass(Main.class), |
| "lambda$main$1", |
| Collections.emptyList(), |
| null)) |
| .build(); |
| default: |
| throw new RuntimeException(); |
| } |
| } |
| |
| public void inspect( |
| ArtProfileInspector profileInspector, CodeInspector inspector, TestParameters parameters) { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| |
| MethodSubject mainMethodSubject = mainClassSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| |
| MethodSubject lambdaImplementationMethod0 = |
| mainClassSubject.uniqueMethodWithOriginalName("lambda$main$0"); |
| assertThat(lambdaImplementationMethod0, isPresent()); |
| |
| MethodSubject lambdaImplementationMethod1 = |
| mainClassSubject.uniqueMethodWithOriginalName("lambda$main$1"); |
| assertThat(lambdaImplementationMethod1, isPresent()); |
| |
| // Verify that two lambdas were synthesized when compiling to dex. |
| assertThat( |
| inspector.clazz(SyntheticItemsTestUtils.syntheticLambdaClass(Main.class, 0)), |
| onlyIf(parameters.isDexRuntime(), isPresent())); |
| assertThat( |
| inspector.clazz(SyntheticItemsTestUtils.syntheticLambdaClass(Main.class, 1)), |
| onlyIf(parameters.isDexRuntime(), isPresent())); |
| |
| if (parameters.isCfRuntime()) { |
| switch (this) { |
| case MAIN_METHOD: |
| profileInspector |
| .assertContainsMethodRule(mainMethodSubject) |
| .assertContainsNoOtherRules(); |
| break; |
| case LAMBDA_BRIDGE_METHOD: |
| profileInspector |
| .assertContainsMethodRules(lambdaImplementationMethod0, lambdaImplementationMethod1) |
| .assertContainsNoOtherRules(); |
| break; |
| default: |
| throw new RuntimeException(); |
| } |
| } else { |
| assert parameters.isDexRuntime(); |
| switch (this) { |
| case MAIN_METHOD: |
| // TODO(b/265729283): Since Main.main() is in the art profile, so should the two |
| // synthetic lambdas be along with their initializers. Since Main.lambda$main$*() is |
| // not in the art profile, the interface method implementation does not need to be |
| // included in the profile. |
| profileInspector |
| .assertContainsMethodRule(mainMethodSubject) |
| .assertContainsNoOtherRules(); |
| break; |
| case LAMBDA_BRIDGE_METHOD: |
| // TODO(b/265729283): Since Main.lambda$main$*() is in the art profile, so should the |
| // two accessibility bridges be. |
| profileInspector |
| .assertContainsMethodRules(lambdaImplementationMethod0, lambdaImplementationMethod1) |
| .assertContainsNoOtherRules(); |
| break; |
| default: |
| throw new RuntimeException(); |
| } |
| } |
| } |
| } |
| |
| @Parameter(0) |
| public ArtProfileInputOutput artProfileInputOutput; |
| |
| @Parameter(1) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{1}, {0}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| ArtProfileInputOutput.values(), getTestParameters().withAllRuntimesAndApiLevels().build()); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addKeepRules( |
| "-neverinline class " + Main.class.getTypeName() + " { void lambda$main$*(); }") |
| .addArtProfileForRewriting(artProfileInputOutput.getArtProfile()) |
| .enableProguardTestOptions() |
| .noHorizontalClassMergingOfSynthetics() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspectResidualArtProfile( |
| (profileInspector, inspector) -> |
| artProfileInputOutput.inspect(profileInspector, inspector, parameters)) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("Hello, world!"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| Runnable lambda = |
| System.currentTimeMillis() > 0 |
| ? () -> System.out.println("Hello, world!") |
| : () -> { |
| throw new RuntimeException(); |
| }; |
| lambda.run(); |
| } |
| } |
| } |