| // Copyright (c) 2020, 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.unusedarguments; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.KeepConstantArguments; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.R8TestRunResult; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.StringUtils; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.FoundMethodSubject; |
| import java.util.List; |
| 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 UnusedArgumentsCollisionMappingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public UnusedArgumentsCollisionMappingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| R8TestRunResult runResult = |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(Main.class) |
| .setMinApi(parameters.getApiLevel()) |
| .addKeepMainRule(Main.class) |
| .enableConstantArgumentAnnotations() |
| .enableInliningAnnotations() |
| .addKeepAttributeLineNumberTable() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("test with unused", "test with used: foo") |
| .inspect(this::verifyArgumentsRemoved); |
| assertEquals( |
| 1, |
| StringUtils.splitLines(runResult.proguardMap()).stream() |
| .filter(line -> line.contains("void test(java.lang.String,java.lang.String)")) |
| .count()); |
| assertEquals( |
| 1, |
| StringUtils.splitLines(runResult.proguardMap()).stream() |
| .filter(line -> line.contains("void test(java.lang.String)")) |
| .count()); |
| } |
| |
| private void verifyArgumentsRemoved(CodeInspector inspector) { |
| ClassSubject main = inspector.clazz(Main.class); |
| assertThat(main, isPresent()); |
| List<FoundMethodSubject> foundMethodSubjects = main.allMethods(); |
| assertEquals(3, foundMethodSubjects.size()); |
| boolean foundZeroArgumentMethod = false; |
| boolean foundOneArgumentMethod = false; |
| for (FoundMethodSubject method : foundMethodSubjects) { |
| if (method.getFinalName().equals("main")) { |
| continue; |
| } |
| foundZeroArgumentMethod |= method.getMethod().getParameters().size() == 0; |
| foundOneArgumentMethod |= method.getMethod().getParameters().size() == 1; |
| } |
| assertTrue(foundZeroArgumentMethod); |
| assertTrue(foundOneArgumentMethod); |
| } |
| |
| public static class Main { |
| |
| @NeverInline |
| public static void test(String unused) { |
| System.out.println("test with unused"); |
| } |
| |
| @KeepConstantArguments |
| @NeverInline |
| public static void test(String used, String unused) { |
| System.out.println("test with used: " + used); |
| } |
| |
| public static void main(String[] args) { |
| test("foo"); |
| test("foo", "notused"); |
| } |
| } |
| } |