| // 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.ir.optimize.redundantfieldloadelimination; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| |
| import com.android.tools.r8.NeverInline; |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import com.android.tools.r8.utils.codeinspector.ClassSubject; |
| import com.android.tools.r8.utils.codeinspector.InstructionSubject; |
| import com.android.tools.r8.utils.codeinspector.MethodSubject; |
| 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 RedundantStaticFieldStoreBeforeStoreTest extends TestBase { |
| |
| @Parameter(0) |
| public TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection parameters() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addInnerClasses(getClass()) |
| .addKeepMainRule(Main.class) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| MethodSubject mainMethodSubject = mainClassSubject.mainMethod(); |
| assertThat(mainMethodSubject, isPresent()); |
| assertEquals( |
| 1, |
| mainMethodSubject |
| .streamInstructions() |
| .filter(InstructionSubject::isStaticPut) |
| .count()); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines("2"); |
| } |
| |
| static class Main { |
| |
| static int f; |
| |
| public static void main(String[] args) { |
| f = 1; |
| f = 2; |
| print(); |
| } |
| |
| @NeverInline |
| private static void print() { |
| System.out.println(f); |
| } |
| } |
| } |