| // Copyright (c) 2021, 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.optimize.argumentpropagation; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoHorizontalClassMerging; |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.references.Reference; |
| import com.android.tools.r8.utils.BooleanBox; |
| import com.android.tools.r8.utils.codeinspector.HorizontallyMergedClassesInspector; |
| import com.android.tools.r8.utils.codeinspector.VerticallyMergedClassesInspector; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class MonomorphicVirtualMethodWithInterfaceMethodSiblingTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection parameters() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| BooleanBox inspected = new BooleanBox(); |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .addArgumentPropagatorCodeScannerResultInspector( |
| inspector -> |
| inspector |
| .assertHasPolymorphicMethodState( |
| Reference.methodFromMethod(I.class.getDeclaredMethod("m", int.class))) |
| .assertHasMonomorphicMethodState( |
| Reference.methodFromMethod(A.class.getDeclaredMethod("m", int.class))) |
| .assertHasBottomMethodState( |
| Reference.methodFromMethod(C.class.getDeclaredMethod("m", int.class))) |
| .apply(ignore -> inspected.set())) |
| .addHorizontallyMergedClassesInspector( |
| HorizontallyMergedClassesInspector::assertNoClassesMerged) |
| .addVerticallyMergedClassesInspector( |
| VerticallyMergedClassesInspector::assertNoClassesMerged) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableNoVerticalClassMergingAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("A: 42", "A: 42"); |
| assertTrue(inspected.isTrue()); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| // Since A.m() does not override any methods (ignoring siblings) and do not have any overrides |
| // this invoke leads to a monomorphic method state for A.m(). |
| A a = new A(); |
| a.m(42); |
| |
| // This invoke leads to a polymorphic method state for I.m(). When we propagate this |
| // information to A.m() in the interface method propagation phase, we need to transform the |
| // polymorphic method state into a monomorphic method state. |
| I i = System.currentTimeMillis() >= 0 ? new B() : new C(); |
| i.m(42); |
| } |
| } |
| |
| interface I { |
| |
| void m(int x); |
| } |
| |
| @NeverClassInline |
| @NoHorizontalClassMerging |
| @NoVerticalClassMerging |
| static class A { |
| |
| @NeverInline |
| public void m(int x) { |
| System.out.println("A: " + x); |
| } |
| } |
| |
| static class B extends A implements I {} |
| |
| @NoHorizontalClassMerging |
| static class C implements I { |
| |
| @Override |
| public void m(int x) { |
| System.out.println("C: " + x); |
| } |
| } |
| } |