| // Copyright (c) 2021, 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.rewrite.arrays; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tools.r8.CompilationMode; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.graph.AppView; |
| import com.android.tools.r8.ir.code.IRCode; |
| import com.android.tools.r8.ir.code.Instruction; |
| import com.android.tools.r8.ir.optimize.CodeRewriter; |
| 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 org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class ArrayWithDataLengthRewriteTest extends TestBase { |
| @Parameters(name = "{0}") |
| public static Iterable<?> data() { |
| return buildParameters(getTestParameters().withDexRuntimes().withAllApiLevels().build()); |
| } |
| |
| private final TestParameters parameters; |
| |
| public ArrayWithDataLengthRewriteTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| private static final String[] expectedOutput = {"3"}; |
| |
| @Test |
| public void d8() throws Exception { |
| testForD8() |
| .setMinApi(parameters.getApiLevel()) |
| .setMode(CompilationMode.RELEASE) |
| .addProgramClasses(Main.class) |
| .addOptionsModification(opt -> opt.testing.irModifier = this::transformArray) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(expectedOutput) |
| .inspect(this::assertNoArrayLength); |
| } |
| |
| @Test |
| public void r8() throws Exception { |
| testForR8(parameters.getBackend()) |
| .setMinApi(parameters.getRuntime()) |
| .addProgramClasses(Main.class) |
| .addOptionsModification(opt -> opt.testing.irModifier = this::transformArray) |
| .addKeepMainRule(Main.class) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines(expectedOutput) |
| .inspect(this::assertNoArrayLength); |
| } |
| |
| private void transformArray(IRCode irCode, AppView<?> appView) { |
| if (irCode.context().getReference().getName().toString().contains("main")) { |
| new CodeRewriter(appView).simplifyArrayConstruction(irCode); |
| assertTrue(irCode.streamInstructions().anyMatch(Instruction::isNewArrayFilledData)); |
| } |
| } |
| |
| private void assertNoArrayLength(CodeInspector inspector) { |
| ClassSubject mainClass = inspector.clazz(Main.class); |
| assertTrue(mainClass.isPresent()); |
| assertTrue( |
| mainClass.mainMethod().streamInstructions().noneMatch(InstructionSubject::isArrayLength)); |
| } |
| |
| public static final class Main { |
| public static void main(String[] args) { |
| int[] ints = new int[3]; |
| ints[0] = 5; |
| ints[1] = 6; |
| ints[2] = 1; |
| System.out.println(ints.length); |
| } |
| } |
| } |