| // 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.inliner; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| |
| import com.android.tools.r8.AlwaysInline; |
| import com.android.tools.r8.AssumeMayHaveSideEffects; |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NoHorizontalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.google.common.collect.ImmutableList; |
| import java.util.List; |
| 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 SingleTargetAfterInliningTest extends TestBase { |
| |
| private final int maxInliningDepth; |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{1}, max inlining depth: {0}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| ImmutableList.of(0, 1), getTestParameters().withAllRuntimesAndApiLevels().build()); |
| } |
| |
| public SingleTargetAfterInliningTest(int maxInliningDepth, TestParameters parameters) { |
| this.maxInliningDepth = maxInliningDepth; |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(SingleTargetAfterInliningTest.class) |
| .addKeepMainRule(TestClass.class) |
| .addOptionsModification( |
| options -> { |
| options.inlinerOptions().applyInliningToInlinee = true; |
| options.inlinerOptions().applyInliningToInlineeMaxDepth = maxInliningDepth; |
| }) |
| .enableAlwaysInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableSideEffectAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::inspect) |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("B.foo()", "B.bar()"); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject testClassSubject = inspector.clazz(TestClass.class); |
| assertThat(testClassSubject, isPresent()); |
| |
| // The indirection() method should be inlined. |
| assertThat(testClassSubject.uniqueMethodWithName("indirection"), not(isPresent())); |
| |
| // A.foo() should be absent if the max inlining depth is 1, because indirection() has been |
| // inlined into main(), which makes A.foo() eligible for inlining into main(). |
| ClassSubject aClassSubject = inspector.clazz(A.class); |
| assertThat(aClassSubject, isPresent()); |
| assertThat(aClassSubject.uniqueMethodWithName("foo"), not(isPresent())); |
| |
| // A.bar() should always be inlined because it is marked as @AlwaysInline. |
| assertThat(aClassSubject.uniqueMethodWithName("bar"), not(isPresent())); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| // Ensure C is instantiated, to prevent us from finding a single target in indirection(). |
| new C(); |
| |
| indirection(new B()); |
| } |
| |
| private static void indirection(A obj) { |
| obj.foo(); |
| obj.bar(); |
| } |
| } |
| |
| abstract static class A { |
| |
| abstract void foo(); |
| |
| abstract void bar(); |
| } |
| |
| @NeverClassInline |
| static class B extends A { |
| |
| @AssumeMayHaveSideEffects // To ensure that new B() cannot be removed. |
| B() {} |
| |
| @Override |
| void foo() { |
| System.out.println("B.foo()"); |
| } |
| |
| @AlwaysInline |
| @Override |
| void bar() { |
| System.out.println("B.bar()"); |
| } |
| } |
| |
| @NeverClassInline |
| @NoHorizontalClassMerging |
| static class C extends A { |
| |
| @AssumeMayHaveSideEffects // To ensure that new C() cannot be removed. |
| C() {} |
| |
| @Override |
| void foo() { |
| System.out.println("C.foo()"); |
| } |
| |
| @Override |
| void bar() { |
| System.out.println("C.bar()"); |
| } |
| } |
| } |