--- /dev/null 2015-10-08 07:26:40.000000000 -1000 +++ new/test/compiler/jvmci/compilerToVM/GetBytecodeTest.java 2015-10-08 07:26:40.000000000 -1000 @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +/** + * @test + * @bug 8136421 + * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64" + * @library /testlibrary /../../test/lib / + * @compile ../common/CompilerToVMHelper.java + * @run main ClassFileInstaller jdk.vm.ci.hotspot.CompilerToVMHelper + * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI + * -Xbootclasspath/a:. + * compiler.jvmci.compilerToVM.GetBytecodeTest + */ + +package compiler.jvmci.compilerToVM; + +import compiler.jvmci.common.CTVMUtilities; +import compiler.jvmci.common.testcases.TestCase; +import java.lang.reflect.Executable; +import java.lang.reflect.Modifier; +import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethodImpl; +import jdk.vm.ci.hotspot.CompilerToVMHelper; +import jdk.internal.org.objectweb.asm.Opcodes; +import jdk.test.lib.Asserts; + +public class GetBytecodeTest { + + public static void main(String[] args) { + TestCase.getAllExecutables() + .forEach(GetBytecodeTest::runSanityTest); + } + + private static void runSanityTest(Executable aMethod) { + HotSpotResolvedJavaMethodImpl method = CTVMUtilities + .getResolvedMethod(aMethod); + byte[] bytecode = CompilerToVMHelper.getBytecode(method); + + int mods = aMethod.getModifiers(); + boolean shouldHasZeroLength = Modifier.isAbstract(mods) + || Modifier.isNative(mods); + boolean correctLength = (bytecode.length == 0 && shouldHasZeroLength) + || (bytecode.length > 0 && !shouldHasZeroLength); + + Asserts.assertTrue(correctLength, "Bytecode of '" + aMethod + "' has " + + bytecode.length + " length"); + + if (!shouldHasZeroLength) { + Asserts.assertTrue(containsReturn(bytecode), "Bytecode of '" + + aMethod + "' doesn't have any return statement"); + } + } + + private static boolean containsReturn(byte[] bytecode) { + for (byte b : bytecode) { + // cast unsigned byte to int + int value = (int) b & 0x000000FF; + switch (value) { + case Opcodes.RET: + case Opcodes.ARETURN: + case Opcodes.IRETURN: + case Opcodes.LRETURN: + case Opcodes.FRETURN: + case Opcodes.DRETURN: + case Opcodes.RETURN: + return true; + } + } + return false; + } +}