| // 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.enumunboxing; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.NeverClassInline; |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import java.util.List; |
| 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 SwitchEnumUnboxingTest extends EnumUnboxingTestBase { |
| |
| private static final Class<MyEnumFewCases> ENUM_CLASS = MyEnumFewCases.class; |
| |
| private final TestParameters parameters; |
| private final boolean enumValueOptimization; |
| private final EnumKeepRules enumKeepRules; |
| |
| @Parameters(name = "{0} valueOpt: {1} keep: {2}") |
| public static List<Object[]> data() { |
| return enumUnboxingTestParameters(); |
| } |
| |
| public SwitchEnumUnboxingTest( |
| TestParameters parameters, boolean enumValueOptimization, EnumKeepRules enumKeepRules) { |
| this.parameters = parameters; |
| this.enumValueOptimization = enumValueOptimization; |
| this.enumKeepRules = enumKeepRules; |
| } |
| |
| @Test |
| public void testEnumUnboxing() throws Exception { |
| Class<Switch> classToTest = Switch.class; |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(SwitchEnumUnboxingTest.class) |
| .addKeepMainRule(classToTest) |
| .addKeepRules(enumKeepRules.getKeepRules()) |
| .addEnumUnboxingInspector(inspector -> inspector.assertUnboxed(ENUM_CLASS)) |
| .enableInliningAnnotations() |
| .enableNeverClassInliningAnnotations() |
| .noMinification() // For assertions. |
| .addOptionsModification(opt -> enableEnumOptions(opt, enumValueOptimization)) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(this::assertSwitchPresentButSwitchMapRemoved) |
| .run(parameters.getRuntime(), classToTest) |
| .assertSuccess() |
| .inspectStdOut(this::assertLines2By2Correct); |
| } |
| |
| private void assertSwitchPresentButSwitchMapRemoved(CodeInspector i) { |
| if (enumValueOptimization) { |
| assertFalse( |
| i.clazz("com.android.tools.r8.enumunboxing.SwitchEnumUnboxingTest$1").isPresent()); |
| } |
| assertTrue( |
| i.clazz(Switch.class) |
| .uniqueMethodWithName("switchOnEnumManyCases") |
| .streamInstructions() |
| .anyMatch(InstructionSubject::isSwitch)); |
| } |
| |
| @NeverClassInline |
| enum MyEnumFewCases { |
| A, |
| B, |
| C; |
| |
| @NeverInline |
| void print() { |
| Switch.packagePrivatePrint(); |
| } |
| } |
| |
| @NeverClassInline |
| enum MyEnumManyCases { |
| A, |
| B, |
| C, |
| D, |
| E, |
| F, |
| G, |
| H, |
| I; |
| |
| @NeverInline |
| void print() { |
| Switch.packagePrivatePrint(); |
| } |
| } |
| |
| static class Switch { |
| |
| public static void main(String[] args) { |
| System.out.println(switchOnEnumFewCases(MyEnumFewCases.A)); |
| System.out.println(0xC0FFEE); |
| System.out.println(switchOnEnumFewCases(MyEnumFewCases.B)); |
| System.out.println(0xBABE); |
| |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.A)); |
| System.out.println(0xACE); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.B)); |
| System.out.println(0xBABE); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.C)); |
| System.out.println(0xC0FFEE); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.D)); |
| System.out.println(0xDEC0DE); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.E)); |
| System.out.println(0xEFFACE); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.F)); |
| System.out.println(0xF00D); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.G)); |
| System.out.println(0x0); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.H)); |
| System.out.println(0x1); |
| System.out.println(switchOnEnumManyCases(MyEnumManyCases.I)); |
| System.out.println(0x2); |
| |
| MyEnumFewCases.A.print(); |
| MyEnumManyCases.A.print(); |
| } |
| |
| @NeverInline |
| static void packagePrivatePrint() { |
| System.out.println("package private dependency"); |
| } |
| |
| // This switch will be converted into branches. |
| @NeverInline |
| static int switchOnEnumFewCases(MyEnumFewCases e) { |
| switch (e) { |
| case A: |
| return 0xC0FFEE; |
| case B: |
| return 0xBABE; |
| default: |
| return 0xDEADBEEF; |
| } |
| } |
| |
| // This switch will remain a switch. |
| @NeverInline |
| static int switchOnEnumManyCases(MyEnumManyCases e) { |
| switch (e) { |
| case A: |
| return 0xACE; |
| case B: |
| return 0xBABE; |
| case C: |
| return 0xC0FFEE; |
| case D: |
| return 0xDEC0DE; |
| case E: |
| return 0xEFFACE; |
| case F: |
| return 0xF00D; |
| case G: |
| return 0x0; |
| case H: |
| return 0x1; |
| case I: |
| return 0x2; |
| default: |
| return 0xDEADBEEF; |
| } |
| } |
| } |
| } |