| // Copyright (c) 2018, 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.release; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| |
| import com.android.tools.r8.CompilationFailedException; |
| import com.android.tools.r8.R8Command; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.ToolHelper; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.utils.AndroidAppConsumers; |
| import com.android.tools.r8.utils.InternalOptions.LineNumberOptimization; |
| import com.android.tools.r8.utils.codeinspector.CodeInspector; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.LineNumberTable; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Streams; |
| import it.unimi.dsi.fastutil.ints.IntCollection; |
| import java.io.IOException; |
| import java.util.concurrent.ExecutionException; |
| 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 ShareCommonCodeOnDistinctPositionsTestRunner extends TestBase { |
| |
| private static final Class CLASS = ShareCommonCodeOnDistinctPositionsTest.class; |
| |
| @Parameters(name = "Backend: {0}") |
| public static Backend[] parameters() { |
| return ToolHelper.getBackends(); |
| } |
| |
| private final Backend backend; |
| |
| public ShareCommonCodeOnDistinctPositionsTestRunner(Backend backend) { |
| this.backend = backend; |
| } |
| |
| @Test |
| public void test() throws CompilationFailedException, IOException, ExecutionException { |
| AndroidAppConsumers sink = new AndroidAppConsumers(); |
| ToolHelper.runR8( |
| R8Command.builder() |
| .addLibraryFiles(runtimeJar(backend)) |
| .addProgramFiles(ToolHelper.getClassFileForTestClass(CLASS)) |
| .setProgramConsumer(sink.wrapProgramConsumer(emptyConsumer(backend))) |
| .setDisableMinification(true) |
| .setDisableTreeShaking(true) |
| .addProguardConfiguration( |
| ImmutableList.of("-keepattributes LineNumberTable"), Origin.unknown()) |
| .build(), |
| options -> options.lineNumberOptimization = LineNumberOptimization.OFF); |
| CodeInspector inspector = new CodeInspector(sink.build()); |
| MethodSubject method = inspector.clazz(CLASS).mainMethod(); |
| // Check that the two shared lines are not in the output (they have no throwing instructions). |
| LineNumberTable lineNumberTable = method.getLineNumberTable(); |
| IntCollection lines = lineNumberTable.getLines(); |
| assertFalse(lines.contains(12)); |
| assertFalse(lines.contains(14)); |
| // Check that the two lines have been shared, e.g., there may be only one multiplication left. |
| assertEquals( |
| "Expected only one multiplcation due to instruction sharing.", |
| 1, |
| Streams.stream(method.iterateInstructions()) |
| .filter(InstructionSubject::isMultiplication) |
| .count()); |
| } |
| } |