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// 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.cf;
import static org.junit.Assert.assertEquals;
import com.android.tools.r8.ByteDataView;
import com.android.tools.r8.ClassFileConsumer.ArchiveConsumer;
import com.android.tools.r8.CompilationMode;
import com.android.tools.r8.R8;
import com.android.tools.r8.R8Command;
import com.android.tools.r8.TestBase;
import com.android.tools.r8.ToolHelper;
import com.android.tools.r8.ToolHelper.ProcessResult;
import java.nio.file.Path;
import org.junit.Test;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class UnneededLoadStoreDebugInfoTest extends TestBase {
private static final String CLASS_NAME = "UnneededLoadStoreDebugInfoTest";
private static final String DESCRIPTOR = "L" + CLASS_NAME + ";";
public static class Dump implements Opcodes {
public static byte[] dump() {
ClassWriter cw = new ClassWriter(0);
MethodVisitor mv;
cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, CLASS_NAME, null, "java/lang/Object", null);
{
mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
mv.visitCode();
Label argsStart = new Label();
mv.visitLabel(argsStart);
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
Label argsEnd = new Label();
mv.visitLabel(argsEnd);
mv.visitTypeInsn(CHECKCAST, "java/io/PrintStream");
mv.visitInsn(POP);
mv.visitInsn(RETURN);
mv.visitLocalVariable("args", "[Ljava/lang/String;", null, argsStart, argsEnd, 0);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
}
@Test
public void test() throws Exception {
Path inputJar = temp.getRoot().toPath().resolve("input.jar");
ArchiveConsumer consumer = new ArchiveConsumer(inputJar);
consumer.accept(ByteDataView.of(Dump.dump()), DESCRIPTOR, null);
consumer.finished(null);
ProcessResult runInput = ToolHelper.runJava(inputJar, CLASS_NAME);
assertEquals(0, runInput.exitCode);
Path outputJar = temp.getRoot().toPath().resolve("output.jar");
R8.run(
R8Command.builder()
.setMode(CompilationMode.DEBUG)
.setDisableTreeShaking(true)
.setDisableMinification(true)
.addProgramFiles(inputJar)
.addLibraryFiles(ToolHelper.getJava8RuntimeJar())
.setProgramConsumer(new ArchiveConsumer(outputJar))
.build());
ProcessResult runOutput = ToolHelper.runJava(outputJar, CLASS_NAME);
assertEquals(runInput.toString(), runOutput.toString());
}
}