| // 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.membervaluepropagation; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| 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.graph.ProgramMethod; |
| import com.android.tools.r8.utils.collections.ProgramMethodSet; |
| import com.android.tools.r8.utils.collections.SortedProgramMethodSet; |
| import java.util.Deque; |
| import java.util.Optional; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class FieldWithDefaultValueAssignmentAfterDefaultsOptimizationTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public FieldWithDefaultValueAssignmentAfterDefaultsOptimizationTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(FieldWithDefaultValueAssignmentAfterDefaultsOptimizationTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification(options -> options.testing.waveModifier = this::waveModifier) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("42"); |
| } |
| |
| private void waveModifier(Deque<SortedProgramMethodSet> waves) { |
| ProgramMethodSet initialWave = waves.getFirst(); |
| Optional<ProgramMethod> printFieldMethod = |
| initialWave.stream() |
| .filter(method -> method.getReference().name.toSourceString().equals("printField")) |
| .findFirst(); |
| assertTrue(printFieldMethod.isPresent()); |
| initialWave.remove(printFieldMethod.get().getDefinition()); |
| |
| SortedProgramMethodSet lastWave = SortedProgramMethodSet.create(); |
| lastWave.add(printFieldMethod.get()); |
| waves.addLast(lastWave); |
| } |
| |
| static class TestClass { |
| |
| static int field = 42; |
| |
| static { |
| printField(); |
| field = 0; |
| } |
| |
| @NeverInline |
| static void printField() { |
| System.out.println(field); // Should print 42. |
| } |
| |
| public static void main(String[] args) {} |
| } |
| } |