| // Copyright (c) 2019, 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.shaking; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NeverMerge; |
| 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.JumboStringMode; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class EffectivelyFinalStaticFieldsTest extends TestBase { |
| private static final Class<?> MAIN = TestClass.class; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimes().build(); |
| } |
| |
| private final TestParameters parameters; |
| |
| public EffectivelyFinalStaticFieldsTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testJVMOutput() throws Exception { |
| assumeTrue("Only run JVM reference on CF runtimes", parameters.isCfRuntime()); |
| testForJvm() |
| .addTestClasspath() |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutputLines("The end"); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(EffectivelyFinalStaticFieldsTest.class) |
| .addKeepMainRule(MAIN) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableMergeAnnotations() |
| .setMinApi(parameters.getRuntime()) |
| .compile() |
| .inspect( |
| codeInspector -> { |
| ClassSubject main = codeInspector.clazz(MAIN); |
| assertThat(main, isPresent()); |
| |
| MethodSubject mainMethod = main.mainMethod(); |
| assertThat(mainMethod, isPresent()); |
| |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 1", JumboStringMode.ALLOW))); |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 2", JumboStringMode.ALLOW))); |
| // TODO(b/138913138): not trivial; assigned multiple times, but can determine the |
| // value. |
| assertFalse( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 3", JumboStringMode.ALLOW))); |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 4", JumboStringMode.ALLOW))); |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 5", JumboStringMode.ALLOW))); |
| // TODO(b/138913138): not trivial; assigned multiple times, but within a certain |
| // range. |
| assertFalse( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 6", JumboStringMode.ALLOW))); |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 7", JumboStringMode.ALLOW))); |
| assertTrue( |
| mainMethod |
| .streamInstructions() |
| .noneMatch(i -> i.isConstString("Dead code: 8", JumboStringMode.ALLOW))); |
| }) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutputLines("The end"); |
| } |
| |
| static class TestClass { |
| public static void main(String... args) { |
| if (StaticFieldWithoutInitialization_Z.alwaysFalse) { |
| System.out.println("Dead code: 1"); |
| } |
| StaticFieldWithInitialization_Z.not_clinit(); |
| if (StaticFieldWithInitialization_Z.alwaysFalse) { |
| System.out.println("Dead code: 2"); |
| } |
| StaticFieldWithNonTrivialInitialization_Z.not_clinit(); |
| if (StaticFieldWithNonTrivialInitialization_Z.alwaysFalse |
| || !StaticFieldWithNonTrivialInitialization_Z.alwaysTrue) { |
| System.out.println("Dead code: 3"); |
| } |
| if (StaticFieldWithoutInitialization_I.alwaysZero != 0) { |
| System.out.println("Dead code: 4"); |
| } |
| if (StaticFieldWithInitialization_I.alwaysZero != 0) { |
| System.out.println("Dead code: 5"); |
| } |
| StaticFieldWithRange_I.foo(); |
| StaticFieldWithRange_I.bar(); |
| if (StaticFieldWithRange_I.alwaysLessThanEight >= 8) { |
| System.out.println("Dead code: 6"); |
| } |
| if (StaticFieldWithoutInitialization_L.alwaysNull != null) { |
| System.out.println("Dead code: 7"); |
| } |
| StaticFieldWithInitialization_L.not_clinit(); |
| if (StaticFieldWithInitialization_L.alwaysNull != null) { |
| System.out.println("Dead code: 8"); |
| } |
| System.out.println("The end"); |
| } |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithoutInitialization_Z { |
| static boolean alwaysFalse; |
| } |
| |
| @NeverClassInline |
| @NeverMerge |
| static class StaticFieldWithInitialization_Z { |
| static boolean alwaysFalse; |
| @NeverInline |
| static void not_clinit() { |
| alwaysFalse = false; |
| } |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithNonTrivialInitialization_Z |
| extends StaticFieldWithInitialization_Z { |
| static boolean alwaysTrue; |
| @NeverInline |
| static void not_clinit() { |
| alwaysTrue = alwaysFalse; |
| alwaysTrue = true; |
| } |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithoutInitialization_I { |
| static int alwaysZero; |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithInitialization_I { |
| static int alwaysZero; |
| static { |
| alwaysZero = 0; |
| } |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithRange_I { |
| static int alwaysLessThanEight; |
| |
| @NeverInline |
| static void foo() { |
| alwaysLessThanEight = 4; |
| } |
| |
| @NeverInline |
| static void bar() { |
| alwaysLessThanEight = 2; |
| } |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithoutInitialization_L { |
| static Object alwaysNull; |
| } |
| |
| @NeverClassInline |
| static class StaticFieldWithInitialization_L { |
| static Object alwaysNull; |
| @NeverInline |
| static void not_clinit() { |
| alwaysNull = null; |
| } |
| } |
| } |