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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.jack;
import com.android.jack.backend.dex.DexFileWriter;
import junit.framework.Assert;
import org.jf.dexlib.ClassDataItem.EncodedMethod;
import org.jf.dexlib.CodeItem;
import org.jf.dexlib.DexFile;
import org.jf.dexlib.Code.Instruction;
import org.jf.dexlib.Code.Opcode;
import org.jf.dexlib.Code.Analysis.AnalyzedInstruction;
import org.jf.dexlib.Code.Analysis.MethodAnalyzer;
import org.jf.dexlib.Code.Format.Instruction23x;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import java.io.File;
import javax.annotation.Nonnull;
/**
* Junit tests related to dx.
*/
public class DxTest {
@Nonnull
private static final File[] BOOTCLASSPATH = TestTools.getDefaultBootclasspath();
@BeforeClass
public static void setUpClass() {
Main.class.getClassLoader().setDefaultAssertionStatus(true);
}
/**
* Verifies that the test source can compiled from source to dex file.
*/
@Test
public void test() throws Exception {
TestTools.runCompilation(TestTools
.buildCommandLineArgs(TestTools.getJackTestsWithJackFolder("dx/compiler")));
}
/**
* Verifies that the test source can compiled from source to dex file.
*/
@Test
public void testDxOptimizer() throws Exception {
TestTools.runCompilation(TestTools
.buildCommandLineArgs(TestTools.getJackTestsWithJackFolder("dx/optimizer")));
}
/**
* Verify that generated dex that not contains register overlapping.
*/
@Test
public void testRegisterOverlapping002() throws Exception {
File outFolder = TestTools.createTempDir("registerOverlapping", "dex");
File out = new File(outFolder, DexFileWriter.DEX_FILENAME);
TestTools.compileSourceToDex(new Options(),
TestTools.getJackTestsWithJackFolder("dx/overlapping"),
TestTools.getClasspathAsString(BOOTCLASSPATH), outFolder, false);
DexFile dexFile = new DexFile(out);
EncodedMethod em =
TestTools.getEncodedMethod(dexFile,
"Lcom/android/jack/dx/overlapping/jack/Data;", "test002",
"(IJJ)J");
checkThatRegistersDoesNotOverlap(em);
}
/**
* Verify that generated dex that not contains register overlapping.
*/
@Test
public void testRegisterOverlapping001() throws Exception {
File outFolder = TestTools.createTempDir("registerOverlapping", "dex");
File out = new File(outFolder, DexFileWriter.DEX_FILENAME);
TestTools.compileSourceToDex(new Options(),
TestTools.getJackTestsWithJackFolder("dx/overlapping"),
TestTools.getClasspathAsString(BOOTCLASSPATH), outFolder, false);
DexFile dexFile = new DexFile(out);
EncodedMethod em =
TestTools.getEncodedMethod(dexFile,
"Lcom/android/jack/dx/overlapping/jack/Data;", "test001",
"(IJJ)J");
checkThatRegistersDoesNotOverlap(em);
}
/**
* Verify that generated dex contains div_int_2addr.
*/
@Test
@Ignore("Dx register allocator use div_int instead of div_int_2addr in some cases.")
public void testRegallocator() throws Exception {
File out = TestTools.createTempFile("core", ".dex");
TestTools.compileSourceToDex(new Options(),
TestTools.getJackTestsWithJackFolder("dx/regallocator"),
TestTools.getClasspathAsString(BOOTCLASSPATH), out, false);
DexFile dexFile = new DexFile(out);
CodeItem ci =
TestTools.getEncodedMethod(dexFile, "Lcom/android/jack/dx/regallocator/jack/Data;",
"compute1", "(I)I").codeItem;
Assert.assertTrue(hasOpcode(ci, Opcode.DIV_INT_2ADDR));
ci =
TestTools.getEncodedMethod(dexFile, "Lcom/android/jack/dx/regallocator/jack/Data;",
"compute2", "(I)I").codeItem;
Assert.assertTrue(hasOpcode(ci, Opcode.DIV_INT_2ADDR));
}
private boolean hasOpcode(@Nonnull CodeItem codeItem, @Nonnull Opcode opcode) {
for (Instruction inst : codeItem.getInstructions()) {
if (inst.opcode == opcode) {
return true;
}
}
return false;
}
private void checkThatRegistersDoesNotOverlap(@Nonnull EncodedMethod em) {
MethodAnalyzer ma = new MethodAnalyzer(em, false, null);
for (AnalyzedInstruction ai : ma.getInstructions()) {
if (ai.getInstruction() instanceof Instruction23x) {
Instruction23x inst = (Instruction23x) ai.getInstruction();
// Register overlaps in the following cases
// v0, v1 = ..., v1, v2
// v0, v1 = v1, v2, ...
// v1, v2 = ..., v0, v1
// v1, v2 = v0, v1, ...
if (inst.getRegisterA() + 1 == inst.getRegisterC()
|| inst.getRegisterA() + 1 == inst.getRegisterB()
|| inst.getRegisterA() == inst.getRegisterC() + 1
|| inst.getRegisterA() == inst.getRegisterB() + 1) {
Assert.fail("Register overlapping");
}
}
}
}
}
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