| // 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.nullability; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| 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 com.android.tools.r8.graph.DexEncodedMethod; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| |
| @RunWith(Parameterized.class) |
| public class InvokeStaticNegativeTest extends TestBase { |
| private static final Class<?> MAIN = Main.class; |
| |
| @Parameterized.Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| private final TestParameters parameters; |
| |
| public InvokeStaticNegativeTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(InvokeStaticNegativeTest.class) |
| .addKeepMainRule(MAIN) |
| .enableInliningAnnotations() |
| .addOptionsModification(o -> { |
| o.testing.callSiteOptimizationInfoInspector = this::callSiteOptimizationInfoInspect; |
| }) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutputLines("null", "non-null") |
| .inspect(this::inspect); |
| } |
| |
| private void callSiteOptimizationInfoInspect(DexEncodedMethod encodedMethod) { |
| assert false : "Unexpected revisit: " + encodedMethod.toSourceString(); |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject main = inspector.clazz(MAIN); |
| assertThat(main, isPresent()); |
| |
| MethodSubject test = main.uniqueMethodWithName("test"); |
| assertThat(test, isPresent()); |
| // Should not optimize branches since the nullability of `arg` is unsure. |
| assertTrue(test.streamInstructions().anyMatch(InstructionSubject::isIf)); |
| } |
| |
| static class Main { |
| public static void main(String... args) { |
| test(null); // calls test with null. |
| test(new Object()); // calls test with non-null instance. |
| } |
| |
| @NeverInline |
| static void test(Object arg) { |
| if (arg != null) { |
| System.out.println("non-null"); |
| } else { |
| System.out.println("null"); |
| } |
| } |
| } |
| } |