| // 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.ir.optimize.classinitializerdefaults; |
| |
| 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.assertNotNull; |
| 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.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.FieldSubject; |
| 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 NonFinalFieldWithDefaultValueTest extends TestBase { |
| |
| private final String EXPECTED_OUTPUT = |
| StringUtils.lines("Hello world (f1=1, f3=0)!", "1", "2", "3", "-1", "-2", "-3"); |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDexRuntimes().withAllApiLevels().build(); |
| } |
| |
| public NonFinalFieldWithDefaultValueTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testD8() throws Exception { |
| testForD8() |
| .addInnerClasses(NonFinalFieldWithDefaultValueTest.class) |
| .setMinApi(parameters.getApiLevel()) |
| // Class initializer defaults optimization only runs in release mode. |
| .release() |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(NonFinalFieldWithDefaultValueTest.class) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput(EXPECTED_OUTPUT); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject testClassSubject = inspector.clazz(TestClass.class); |
| assertThat(testClassSubject, isPresent()); |
| |
| // No instructions can read field f1 before it is assigned, and therefore, we can safely |
| // remove the static-put instruction and update the static value of the field. |
| FieldSubject f1FieldSubject = testClassSubject.uniqueFieldWithName("f1"); |
| assertThat(f1FieldSubject, isPresent()); |
| assertNotNull(f1FieldSubject.getField().getStaticValue()); |
| assertTrue(f1FieldSubject.getField().getStaticValue().isDexValueInt()); |
| assertEquals(1, f1FieldSubject.getField().getStaticValue().asDexValueInt().getValue()); |
| |
| // Field f3 is assigned after an instruction that could read it, and therefore, we cannot safely |
| // remove the static-put instruction and update the static value of the field. |
| FieldSubject f3FieldSubject = testClassSubject.uniqueFieldWithName("f3"); |
| assertThat(f3FieldSubject, isPresent()); |
| assertNotNull(f3FieldSubject.getField().getStaticValue()); |
| assertTrue(f3FieldSubject.getField().getStaticValue().isDexValueInt()); |
| assertEquals(0, f3FieldSubject.getField().getStaticValue().asDexValueInt().getValue()); |
| } |
| |
| static class TestClass { |
| |
| static int f1 = 1; |
| static Greeter f2 = new Greeter(2); |
| static int f3 = 3; |
| |
| public static void main(String[] args) { |
| System.out.println(f1); |
| System.out.println(f2.value); |
| System.out.println(f3); |
| updateFields(); |
| System.out.println(f1); |
| System.out.println(f2.value); |
| System.out.println(f3); |
| } |
| |
| @NeverInline |
| static void updateFields() { |
| f1 = -1; |
| f2.value = -2; |
| f3 = -3; |
| } |
| } |
| |
| static class Greeter { |
| |
| int value; |
| |
| Greeter(int value) { |
| System.out.println("Hello world (f1=" + TestClass.f1 + ", f3=" + TestClass.f3 + ")!"); |
| this.value = value; |
| } |
| } |
| } |