| // 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.bridgeremoval.hoisting; |
| |
| import com.android.tools.r8.NeverClassInline; |
| 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 org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| /** Regression test for b/195037294. */ |
| @RunWith(Parameterized.class) |
| public class AbstractAfterTreeShakingBridgeHoistingTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public AbstractAfterTreeShakingBridgeHoistingTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class, A.class) |
| .addProgramClassFileData( |
| transformer(B1.class) |
| .setBridge(B1.class.getDeclaredMethod("virtualBridge", Object.class)) |
| .transform(), |
| transformer(B2.class) |
| .setBridge(B2.class.getDeclaredMethod("virtualBridge", Object.class)) |
| .transform()) |
| .addKeepMainRule(TestClass.class) |
| // Keep test() method to disable call site optimization for that method. |
| .addKeepRules( |
| "-keepclassmembers class " + TestClass.class.getTypeName() + " {", |
| " void test(...);", |
| "}") |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutput("Hello"); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| B1 b1 = null; |
| B2 b2 = null; |
| // Dead instantiations of B1 and B2. This way, R8 considers B1 and B2 to be instantiated until |
| // the second round of tree shaking. After the second round of tree shaking, the |
| // virtualBridge() methods on B1 and B2 are made abstract, since they are not instantiated. |
| // This should disable bridge hoisting. |
| if (alwaysFalse()) { |
| b1 = B1.create(); |
| b2 = B2.create(); |
| } |
| test(new A(), b1, b2); |
| } |
| |
| static boolean alwaysFalse() { |
| return false; |
| } |
| |
| @NeverInline |
| private static void test(A a, B1 b1, B2 b2) { |
| System.out.print(a.m("Hello")); |
| if (b1 != null) { |
| System.out.print(b1.virtualBridge(" ")); |
| } |
| if (b2 != null) { |
| System.out.println(b2.virtualBridge("world!")); |
| } |
| } |
| } |
| |
| static class A { |
| |
| @NeverInline |
| public Object m(String arg) { |
| return System.currentTimeMillis() >= 0 ? arg : null; |
| } |
| } |
| |
| @NeverClassInline |
| static class B1 extends A { |
| |
| static B1 create() { |
| return new B1(); |
| } |
| |
| @NeverInline |
| public /*bridge*/ String virtualBridge(Object o) { |
| return (String) m((String) o); |
| } |
| } |
| |
| @NeverClassInline |
| static class B2 extends A { |
| |
| static B2 create() { |
| return new B2(); |
| } |
| |
| @NeverInline |
| public /*bridge*/ String virtualBridge(Object o) { |
| return (String) m((String) o); |
| } |
| } |
| } |