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// 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 EffectivelyFinalInstanceFieldsTest 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 EffectivelyFinalInstanceFieldsTest(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(EffectivelyFinalInstanceFieldsTest.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 only once in <init>
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) {
InstanceFieldWithoutInitialization_Z i1 = new InstanceFieldWithoutInitialization_Z();
if (i1.alwaysFalse) {
System.out.println("Dead code: 1");
}
InstanceFieldWithInitialization_Z i2 = new InstanceFieldWithInitialization_Z();
if (i2.alwaysFalse) {
System.out.println("Dead code: 2");
}
InstanceFieldWithNonTrivialInitialization_Z i3 =
new InstanceFieldWithNonTrivialInitialization_Z();
if (i3.alwaysFalse || !i3.alwaysTrue) {
System.out.println("Dead code: 3");
}
InstanceFieldWithoutInitialization_I i4 = new InstanceFieldWithoutInitialization_I();
if (i4.alwaysZero != 0) {
System.out.println("Dead code: 4");
}
InstanceFieldWithInitialization_I i5 = new InstanceFieldWithInitialization_I();
if (i5.alwaysZero != 0) {
System.out.println("Dead code: 5");
}
InstanceFieldWithRange_I i6 = new InstanceFieldWithRange_I();
i6.foo();
i6.bar();
if (i6.alwaysLessThanEight >= 8) {
System.out.println("Dead code: 6");
}
InstanceFieldWithoutInitialization_L i7 = new InstanceFieldWithoutInitialization_L();
if (i7.alwaysNull != null) {
System.out.println("Dead code: 7");
}
InstanceFieldWithInitialization_L i8 = new InstanceFieldWithInitialization_L();
if (i8.alwaysNull != null) {
System.out.println("Dead code: 8");
}
System.out.println("The end");
}
}
@NeverClassInline
static class InstanceFieldWithoutInitialization_Z {
boolean alwaysFalse;
InstanceFieldWithoutInitialization_Z() {
}
}
@NeverClassInline
@NeverMerge
static class InstanceFieldWithInitialization_Z {
boolean alwaysFalse;
InstanceFieldWithInitialization_Z() {
alwaysFalse = false;
}
}
@NeverClassInline
static class InstanceFieldWithNonTrivialInitialization_Z
extends InstanceFieldWithInitialization_Z {
boolean alwaysTrue;
InstanceFieldWithNonTrivialInitialization_Z() {
super();
alwaysTrue = alwaysFalse;
alwaysTrue = true;
}
}
@NeverClassInline
static class InstanceFieldWithoutInitialization_I {
int alwaysZero;
InstanceFieldWithoutInitialization_I() {
}
}
@NeverClassInline
static class InstanceFieldWithInitialization_I {
int alwaysZero;
InstanceFieldWithInitialization_I() {
alwaysZero = 0;
}
}
@NeverClassInline
static class InstanceFieldWithRange_I {
int alwaysLessThanEight;
InstanceFieldWithRange_I() {
}
@NeverInline
void foo() {
alwaysLessThanEight = 4;
}
@NeverInline
void bar() {
alwaysLessThanEight = 2;
}
}
@NeverClassInline
static class InstanceFieldWithoutInitialization_L {
Object alwaysNull;
InstanceFieldWithoutInitialization_L() {
}
}
@NeverClassInline
static class InstanceFieldWithInitialization_L {
Object alwaysNull;
InstanceFieldWithInitialization_L() {
alwaysNull = null;
}
}
}