| // Copyright (c) 2022, 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.fields; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| 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.ir.optimize.membervaluepropagation.fields.FieldTypeStrengtheningTest.A; |
| import com.android.tools.r8.ir.optimize.membervaluepropagation.fields.FieldTypeStrengtheningTest.Main; |
| import com.android.tools.r8.transformers.ClassFileTransformer.FieldPredicate; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.FieldSubject; |
| import java.io.IOException; |
| 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 FieldTypeStrengtheningCollisionTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection parameters() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(A.class) |
| .addProgramClassFileData(getTransformedMain()) |
| .addKeepMainRule(Main.class) |
| .addKeepRules( |
| "-keep class " + Main.class.getTypeName() + " { " + A.class.getTypeName() + " f; }") |
| .enableInliningAnnotations() |
| .noMinification() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| assertThat(aClassSubject, isPresent()); |
| |
| FieldSubject keptFieldSubject = mainClassSubject.uniqueFieldWithFinalName("f"); |
| assertEquals( |
| aClassSubject.getFinalName(), |
| keptFieldSubject.getField().getType().getTypeName()); |
| |
| FieldSubject optimizedFieldSubject = mainClassSubject.uniqueFieldWithFinalName("f$1"); |
| assertEquals( |
| aClassSubject.getFinalName(), |
| optimizedFieldSubject.getField().getType().getTypeName()); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A"); |
| } |
| |
| private static byte[] getTransformedMain() throws IOException { |
| return transformer(Main.class).renameField(FieldPredicate.onName("f1"), "f").transform(); |
| } |
| |
| static class Main { |
| |
| // @Keep |
| static A f1; // renamed to f |
| |
| static Object f; |
| |
| public static void main(String[] args) { |
| setField(); |
| printField(); |
| } |
| |
| @NeverInline |
| static void setField() { |
| f = new A(); |
| } |
| |
| @NeverInline |
| static void printField() { |
| System.out.println(f); |
| } |
| } |
| |
| public static class A { |
| |
| @Override |
| public String toString() { |
| return "A"; |
| } |
| } |
| } |