GetBytecodeTest.java revision 9287:40bd4478a362 
1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25/**
26 * @test
27 * @bug 8136421
28 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
29 * @library /testlibrary /../../test/lib /
30 * @compile ../common/CompilerToVMHelper.java
31 * @run main ClassFileInstaller jdk.vm.ci.hotspot.CompilerToVMHelper
32 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
33 *      -Xbootclasspath/a:.
34 *      compiler.jvmci.compilerToVM.GetBytecodeTest
35 */
36
37package compiler.jvmci.compilerToVM;
38
39import compiler.jvmci.common.CTVMUtilities;
40import compiler.jvmci.common.testcases.TestCase;
41import java.lang.reflect.Executable;
42import java.lang.reflect.Modifier;
43import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
44import jdk.vm.ci.hotspot.CompilerToVMHelper;
45import jdk.internal.org.objectweb.asm.Opcodes;
46import jdk.test.lib.Asserts;
47
48public class GetBytecodeTest {
49
50    public static void main(String[] args) {
51        TestCase.getAllExecutables()
52                .forEach(GetBytecodeTest::runSanityTest);
53    }
54
55    private static void runSanityTest(Executable aMethod) {
56        HotSpotResolvedJavaMethod method = CTVMUtilities
57                .getResolvedMethod(aMethod);
58        byte[] bytecode = CompilerToVMHelper.getBytecode(method);
59
60        int mods = aMethod.getModifiers();
61        boolean shouldHasZeroLength = Modifier.isAbstract(mods)
62                || Modifier.isNative(mods);
63        boolean correctLength = (bytecode.length == 0 && shouldHasZeroLength)
64                || (bytecode.length > 0 && !shouldHasZeroLength);
65
66        Asserts.assertTrue(correctLength, "Bytecode of '" + aMethod + "' has "
67                + bytecode.length + " length");
68
69        if (!shouldHasZeroLength) {
70            Asserts.assertTrue(containsReturn(bytecode), "Bytecode of '"
71                    + aMethod + "' doesn't have any return statement");
72        }
73    }
74
75    private static boolean containsReturn(byte[] bytecode) {
76        for (byte b : bytecode) {
77            //  cast unsigned byte to int
78            int value = (int) b & 0x000000FF;
79            switch (value) {
80                case Opcodes.RET:
81                case Opcodes.ARETURN:
82                case Opcodes.IRETURN:
83                case Opcodes.LRETURN:
84                case Opcodes.FRETURN:
85                case Opcodes.DRETURN:
86                case Opcodes.RETURN:
87                    return true;
88            }
89        }
90        return false;
91    }
92}
93