| // 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.optimize.argumentpropagation; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static junit.framework.TestCase.assertTrue; |
| 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.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| 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 ConstantUnboxedEnumArgumentTest 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()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addOptionsModification( |
| options -> |
| options |
| .callSiteOptimizationOptions() |
| .setEnableExperimentalArgumentPropagation(true)) |
| .addEnumUnboxingInspector(inspector -> inspector.assertUnboxed(MyEnum.class)) |
| .enableInliningAnnotations() |
| // TODO(b/173398086): uniqueMethodWithName() does not work with argument removal. |
| .noMinification() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| |
| MethodSubject mainMethodSubject = mainClassSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| assertTrue( |
| mainMethodSubject |
| .streamInstructions() |
| .noneMatch(InstructionSubject::isStaticGet)); |
| |
| MethodSubject testMethodSubject = mainClassSubject.uniqueMethodWithName("test"); |
| assertThat(testMethodSubject, isPresent()); |
| assertEquals(0, testMethodSubject.getProgramMethod().getReference().getArity()); |
| assertTrue( |
| testMethodSubject |
| .streamInstructions() |
| .anyMatch(instruction -> instruction.isConstString("A"))); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| // Argument should be removed by argument propagation. |
| test(MyEnum.A); |
| } |
| |
| @NeverInline |
| static void test(MyEnum myEnum) { |
| // Argument propagation should remove the parameter `myEnum` and materialize an access to |
| // `MyEnum.A`, which should subsequently be rewritten by enum unboxing. |
| System.out.println(myEnum.name()); |
| } |
| } |
| |
| enum MyEnum { |
| A |
| } |
| } |