| // Copyright (c) 2020, 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.classinliner; |
| |
| 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 org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class ClassInliningWithImpreciseReceiverTypeTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public ClassInliningWithImpreciseReceiverTypeTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(ClassInliningWithImpreciseReceiverTypeTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .enableMergeAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("C1", "C2"); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| // After force inlining asB() and build(), the class inliner will attempt to force inline |
| // internalBuild(), but the receiver of that invoke is defined by a check-cast instruction |
| // that casts the receiver to B. |
| System.out.println(new C1().asB().build()); |
| System.out.println(new C2().asB().build()); |
| } |
| } |
| |
| @NeverMerge |
| abstract static class A { |
| |
| @NeverInline |
| B asB() { |
| return (B) this; |
| } |
| |
| @NeverInline |
| String build() { |
| return internalBuild(); |
| } |
| |
| abstract String internalBuild(); |
| } |
| |
| abstract static class B extends A {} |
| |
| static class C1 extends B { |
| |
| @NeverInline |
| String internalBuild() { |
| return System.currentTimeMillis() > 0 ? "C1" : null; |
| } |
| } |
| |
| static class C2 extends B { |
| |
| @NeverInline |
| String internalBuild() { |
| return System.currentTimeMillis() > 0 ? "C2" : null; |
| } |
| } |
| } |