| // 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 static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.NoHorizontalClassMerging; |
| import com.android.tools.r8.NoVerticalClassMerging; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.graph.ProgramMethod; |
| import com.android.tools.r8.ir.optimize.info.CallSiteOptimizationInfo; |
| 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 InvokeVirtualWithRefinedReceiverTest 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 InvokeVirtualWithRefinedReceiverTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(InvokeVirtualWithRefinedReceiverTest.class) |
| .addKeepMainRule(MAIN) |
| .enableNoVerticalClassMergingAnnotations() |
| .enableNoHorizontalClassMergingAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .enableInliningAnnotations() |
| .addOptionsModification( |
| o -> { |
| o.testing.callSiteOptimizationInfoInspector = this::callSiteOptimizationInfoInspect; |
| }) |
| .setMinApi(parameters.getApiLevel()) |
| .run(parameters.getRuntime(), MAIN) |
| .assertSuccessWithOutputLines("null", "C") |
| .inspect(this::inspect); |
| } |
| |
| private void callSiteOptimizationInfoInspect(ProgramMethod method) { |
| assert method.getReference().name.toString().equals("m") |
| : "Unexpected revisit: " + method.toSourceString(); |
| CallSiteOptimizationInfo callSiteOptimizationInfo = |
| method.getDefinition().getCallSiteOptimizationInfo(); |
| if (method.getHolderType().toSourceString().endsWith("$C")) { |
| assert callSiteOptimizationInfo.getDynamicUpperBoundType(1).isDefinitelyNotNull(); |
| } else { |
| assert callSiteOptimizationInfo.getDynamicUpperBoundType(1).isDefinitelyNull(); |
| } |
| } |
| |
| private void inspect(CodeInspector inspector) { |
| ClassSubject a = inspector.clazz(A.class); |
| assertThat(a, isPresent()); |
| |
| ClassSubject b = inspector.clazz(B.class); |
| assertThat(b, isPresent()); |
| |
| MethodSubject b_m = b.uniqueMethodWithName("m"); |
| assertThat(b_m, isPresent()); |
| // Can optimize branches since `arg` is definitely null. |
| assertTrue(b_m.streamInstructions().noneMatch(InstructionSubject::isIf)); |
| |
| ClassSubject bSub = inspector.clazz(BSub.class); |
| assertThat(bSub, isPresent()); |
| |
| MethodSubject bSub_m = bSub.uniqueMethodWithName("m"); |
| assertThat(bSub_m, isPresent()); |
| // Can optimize branches since `arg` is definitely null. |
| assertTrue(bSub_m.streamInstructions().noneMatch(InstructionSubject::isIf)); |
| |
| ClassSubject c = inspector.clazz(C.class); |
| assertThat(c, isPresent()); |
| |
| MethodSubject c_m = c.uniqueMethodWithName("m"); |
| assertThat(c_m, isPresent()); |
| // Can optimize branches since `arg` is definitely not null. |
| assertTrue(c_m.streamInstructions().noneMatch(InstructionSubject::isIf)); |
| |
| ClassSubject cSub = inspector.clazz(CSub.class); |
| assertThat(cSub, not(isPresent())); |
| } |
| |
| abstract static class A { |
| abstract void m(Object arg); |
| } |
| |
| @NoVerticalClassMerging |
| @NeverClassInline |
| static class B extends A { |
| @NeverInline |
| @Override |
| void m(Object arg) { |
| // Technically same as String#valueOf. |
| if (arg != null) { |
| System.out.println(arg.toString()); |
| } else { |
| System.out.println("null"); |
| } |
| } |
| |
| @NeverInline |
| @Override |
| public String toString() { |
| return "B"; |
| } |
| } |
| |
| @NeverClassInline |
| static class BSub extends B { |
| @NeverInline |
| @Override |
| void m(Object arg) { |
| // Same as B#m. |
| if (arg != null) { |
| System.out.println(arg.toString()); |
| } else { |
| System.out.println("null"); |
| } |
| } |
| |
| @NeverInline |
| @Override |
| public String toString() { |
| return "BSub"; |
| } |
| } |
| |
| @NoVerticalClassMerging |
| @NoHorizontalClassMerging |
| @NeverClassInline |
| static class C extends A { |
| @NeverInline |
| @Override |
| void m(Object arg) { |
| // Technically same as String#valueOf. |
| if (arg != null) { |
| System.out.println(arg.toString()); |
| } else { |
| System.out.println("null"); |
| } |
| } |
| |
| @NeverInline |
| @Override |
| public String toString() { |
| return "C"; |
| } |
| } |
| |
| @NeverClassInline |
| static class CSub extends C { |
| @NeverInline |
| @Override |
| void m(Object arg) { |
| // Same as C#m. |
| if (arg != null) { |
| System.out.println(arg.toString()); |
| } else { |
| System.out.println("null"); |
| } |
| } |
| |
| @NeverInline |
| @Override |
| public String toString() { |
| return "CSub"; |
| } |
| } |
| |
| static class Main { |
| public static void main(String... args) { |
| A a = System.currentTimeMillis() > 0 ? new B() : new BSub(); |
| a.m(null); // No single target, but should be able to filter out C(Sub)#m |
| |
| A c = new C(); // with the exact type: |
| c.m(c); // calls C.m() with non-null instance. |
| } |
| } |
| } |