| // Copyright (c) 2018, 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; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.ToolHelper; |
| 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 CatchHandlerRemovalTest extends TestBase { |
| |
| private final Backend backend; |
| |
| @Parameters(name = "Backend: {0}") |
| public static Backend[] data() { |
| return ToolHelper.getBackends(); |
| } |
| |
| public CatchHandlerRemovalTest(Backend backend) { |
| this.backend = backend; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| String expected = "In TestClass.method()"; |
| |
| testForJvm().addTestClasspath().run(TestClass.class).assertSuccessWithOutput(expected); |
| |
| testForR8(backend) |
| .addInnerClasses(CatchHandlerRemovalTest.class) |
| .addKeepMainRule(TestClass.class) |
| .enableInliningAnnotations() |
| .run(TestClass.class) |
| .assertSuccessWithOutput(expected) |
| .inspector(); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| // Instantiate ExceptionA and ExceptionB such that the uninstantiated type optimization |
| // cannot unlink the catch handlers guarded by these types. |
| new ExceptionA(); |
| new ExceptionB(); |
| |
| // Since ExceptionC is never instantiated, the catch handler for it will be removed by the |
| // uninstantiated type optimization. |
| try { |
| method(); |
| } catch (ExceptionA | ExceptionB | ExceptionC e) { |
| System.out.println("Caught exception"); |
| } |
| } |
| |
| @NeverInline |
| public static void method() { |
| System.out.print("In TestClass.method()"); |
| } |
| } |
| |
| static class ExceptionA extends RuntimeException {} |
| |
| static class ExceptionB extends RuntimeException {} |
| |
| static class ExceptionC extends RuntimeException {} |
| } |