| // 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.membervaluepropagation; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assume.assumeTrue; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.graph.AccessFlags; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.StringUtils; |
| 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 java.io.IOException; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| |
| @RunWith(Parameterized.class) |
| public class SdkIntMemberValuePropagationTest extends TestBase { |
| |
| private enum Compiler { |
| D8, |
| R8 |
| } |
| |
| public enum Rule { |
| EMPTY(""), |
| ASSUME_NO_SIDE_EFFECTS_24( |
| StringUtils.lines( |
| "-assumenosideeffects class android.os.Build$VERSION {", |
| " public static int SDK_INT return 24;", |
| "}")), |
| ASSUME_NO_SIDE_EFFECTS_24_29( |
| StringUtils.lines( |
| "-assumenosideeffects class android.os.Build$VERSION {", |
| " public static int SDK_INT return 24..25;", |
| "}")), |
| ASSUME_VALUES_24( |
| StringUtils.lines( |
| "-assumevalues class android.os.Build$VERSION {", |
| " public static int SDK_INT return 24;", |
| "}")), |
| ASSUME_VALUES_24_29( |
| StringUtils.lines( |
| "-assumevalues class android.os.Build$VERSION {", |
| " public static int SDK_INT return 24..29;", |
| "}")); |
| |
| private final String rule; |
| |
| Rule(String rule) { |
| this.rule = rule; |
| } |
| |
| String getRule() { |
| return rule; |
| } |
| } |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameter(1) |
| public Rule rule; |
| |
| @Parameterized.Parameters(name = "{0}, rule: {1}") |
| public static List<Object[]> data() { |
| return buildParameters( |
| getTestParameters().withAllRuntimesAndApiLevels().build(), Rule.values()); |
| } |
| |
| @Test |
| public void testD8() throws Exception { |
| assumeTrue(parameters.isDexRuntime()); |
| assumeTrue(rule.getRule().equals("")); |
| testForD8() |
| .addProgramClassFileData(getTransformedMainClass()) |
| .addLibraryClassFileData(getTransformedBuildVERSIONClass()) |
| .addLibraryFiles(parameters.getDefaultRuntimeLibrary()) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(inspector -> verifyOutput(inspector, Compiler.D8)) |
| .addRunClasspathClassFileData(getTransformedBuildVERSIONClass()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(getExpectedOutput(Compiler.D8)); |
| } |
| |
| @Test |
| public void testR8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClassFileData(getTransformedMainClass()) |
| .addKeepMainRule(Main.class) |
| .addKeepRules(rule.getRule()) |
| .addLibraryClassFileData(getTransformedBuildVERSIONClass()) |
| .addLibraryFiles(parameters.getDefaultRuntimeLibrary()) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect(inspector -> verifyOutput(inspector, Compiler.R8)) |
| .addRunClasspathClassFileData(getTransformedBuildVERSIONClass()) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(getExpectedOutput(Compiler.R8)); |
| } |
| |
| private String getExpectedOutput(Compiler compiler) { |
| if (compiler == Compiler.D8) { |
| return parameters.getApiLevel().isLessThan(AndroidApiLevel.N) ? "<N" : ">=N"; |
| } else { |
| if (rule.getRule().equals("")) { |
| if (parameters.isDexRuntime()) { |
| return getExpectedOutput(Compiler.D8); |
| } |
| return "-1"; |
| } |
| return ">=N"; |
| } |
| } |
| |
| private static byte[] getTransformedMainClass() throws IOException { |
| return transformer(Main.class) |
| .replaceClassDescriptorInMethodInstructions( |
| descriptor(VERSION.class), "Landroid/os/Build$VERSION;") |
| .transform(); |
| } |
| |
| private byte[] getTransformedBuildVERSIONClass() throws IOException, NoSuchFieldException { |
| return transformer(VERSION.class) |
| .setClassDescriptor("Landroid/os/Build$VERSION;") |
| .setAccessFlags(VERSION.class.getDeclaredField("SDK_INT"), AccessFlags::setFinal) |
| .transform(); |
| } |
| |
| private void verifyOutput(CodeInspector inspector, Compiler compiler) { |
| ClassSubject classSubject = inspector.clazz(Main.class); |
| assertThat(classSubject, isPresent()); |
| |
| MethodSubject mainSubject = classSubject.mainMethod(); |
| assertThat(mainSubject, isPresent()); |
| |
| boolean hasIf = mainSubject.streamInstructions().anyMatch(InstructionSubject::isIf); |
| boolean readsMinSdkField = |
| mainSubject |
| .streamInstructions() |
| .anyMatch(x -> x.isStaticGet() && x.getField().getName().toString().equals("SDK_INT")); |
| if (compiler == Compiler.D8 || rule.getRule().equals("")) { |
| assertEquals( |
| parameters.isCfRuntime() || parameters.getApiLevel().isLessThan(AndroidApiLevel.N), |
| hasIf); |
| assertEquals( |
| parameters.isCfRuntime() || parameters.getApiLevel().isLessThan(AndroidApiLevel.N), |
| readsMinSdkField); |
| } else { |
| assertFalse(hasIf); |
| assertEquals(rule.getRule().startsWith("-assumevalues"), readsMinSdkField); |
| } |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| if (VERSION.SDK_INT >= 24) { |
| System.out.println(">=N"); |
| } else if (VERSION.SDK_INT >= 0) { |
| System.out.println("<N"); |
| } else { |
| System.out.println("-1"); |
| } |
| } |
| } |
| |
| public static class /*android.os.Build$*/ VERSION { |
| |
| public static /*final*/ int SDK_INT = -1; |
| } |
| } |