| // 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.optimize.argumentpropagation; |
| |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isAbsent; |
| import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent; |
| import static junit.framework.TestCase.assertTrue; |
| 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.InternalOptions.CallSiteOptimizationOptions; |
| 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 StaticMethodWithConstantArgumentThroughCallChainTest 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) |
| .addOptionsModification( |
| options -> { |
| CallSiteOptimizationOptions callSiteOptimizationOptions = |
| options.callSiteOptimizationOptions(); |
| callSiteOptimizationOptions.setEnableExperimentalArgumentPropagation(true); |
| callSiteOptimizationOptions.setEnableConstantPropagation(); |
| }) |
| .enableInliningAnnotations() |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .inspect( |
| inspector -> { |
| ClassSubject mainClassSubject = inspector.clazz(Main.class); |
| assertThat(mainClassSubject, isPresent()); |
| |
| // The test1(), test2(), and test3() methods have been optimized. |
| for (int i = 1; i <= 3; i++) { |
| MethodSubject testMethodSubject = mainClassSubject.uniqueMethodWithName("test" + i); |
| assertThat(testMethodSubject, isPresent()); |
| // TODO(b/190154391): The parameter x should be removed. |
| assertEquals(1, testMethodSubject.getProgramMethod().getParameters().size()); |
| assertTrue( |
| testMethodSubject.streamInstructions().noneMatch(InstructionSubject::isIf)); |
| } |
| |
| assertThat(mainClassSubject.uniqueMethodWithName("dead"), isAbsent()); |
| }) |
| .run(parameters.getRuntime(), Main.class) |
| .assertSuccessWithOutputLines( |
| "Hello from test1()", |
| "Hello from test2()", |
| "Hello from test3()", |
| "Hello from test1()", |
| "Hello from test2()", |
| "Hello from test3()", |
| "Hello from test1()", |
| "Hello from test2()", |
| "Hello from test3()"); |
| } |
| |
| static class Main { |
| |
| public static void main(String[] args) { |
| test1(42); |
| test1(42); |
| test1(42); |
| } |
| |
| @NeverInline |
| static void test1(int x) { |
| if (x == 42) { |
| System.out.println("Hello from test1()"); |
| } else { |
| dead(); |
| } |
| test2(x); |
| } |
| |
| @NeverInline |
| static void test2(int x) { |
| if (x == 42) { |
| System.out.println("Hello from test2()"); |
| } else { |
| dead(); |
| } |
| test3(x); |
| } |
| |
| @NeverInline |
| static void test3(int x) { |
| if (x == 42) { |
| System.out.println("Hello from test3()"); |
| } else { |
| dead(); |
| } |
| } |
| |
| @NeverInline |
| static void dead() { |
| System.out.println("Unreachable"); |
| } |
| } |
| } |