| // 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.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.AndroidApiLevel; |
| import com.android.tools.r8.utils.InternalOptions.LineNumberOptimization; |
| 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.Streams; |
| import it.unimi.dsi.fastutil.ints.IntCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameter; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class ShareCommonCodeOnDistinctPositionsTestRunner extends TestBase { |
| |
| private static final Class<?> CLASS = ShareCommonCodeOnDistinctPositionsTest.class; |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withDefaultRuntimes().withApiLevel(AndroidApiLevel.B).build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(CLASS) |
| .addKeepAttributeLineNumberTable() |
| .addDontObfuscate() |
| .addDontShrink() |
| .addOptionsModification( |
| options -> options.lineNumberOptimization = LineNumberOptimization.OFF) |
| .setMinApi(parameters) |
| .compile() |
| .inspect( |
| inspector -> { |
| 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()); |
| }); |
| } |
| } |