| // 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.callsites; |
| |
| 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 com.android.tools.r8.graph.DexEncodedMethod; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class HashCodeTest extends TestBase { |
| private static final Class<?> MAIN = TestClass.class; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| private final TestParameters parameters; |
| |
| public HashCodeTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(HashCodeTest.class) |
| .addKeepMainRule(MAIN) |
| .enableMergeAnnotations() |
| .addOptionsModification(o -> { |
| o.testing.callSiteOptimizationInfoInspector = this::callSiteOptimizationInfoInspect; |
| }) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutputLines("10"); |
| } |
| |
| private void callSiteOptimizationInfoInspect(DexEncodedMethod encodedMethod) { |
| // TODO(b/139246447): should avoid visiting A#<init>, which is trivial, default init! |
| assert encodedMethod.method.holder.toSourceString().endsWith("A") |
| && encodedMethod.toSourceString().contains("<init>") |
| : "Unexpected revisit: " + encodedMethod.toSourceString(); |
| } |
| |
| static class TestClass { |
| public static void main(String[] args) { |
| A obj = System.currentTimeMillis() > 0 ? new B() : new C(); |
| System.out.println(obj.hashCode()); |
| } |
| } |
| |
| @NeverMerge |
| static class A { |
| @Override |
| public int hashCode() { |
| return 1; |
| } |
| } |
| |
| @NeverMerge |
| static class B extends A { |
| @Override |
| public int hashCode() { |
| return super.hashCode() * 7 + 3; |
| } |
| } |
| |
| static class C extends B { |
| @Override |
| public int hashCode() { |
| return super.hashCode() * 31 + 17; |
| } |
| } |
| } |