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comparison test/compiler/osr/TestOSRWithNonEmptyStack.java @ 20283:dbb05f6d93c4

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8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on Summary: call rtm_deopt() only if there were no compilation bailouts before. Reviewed-by: kvn
author fzhinkin
date Mon, 28 Jul 2014 15:06:38 -0700
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20282:f3aeae1f9fc5 20283:dbb05f6d93c4
1 /*
2 * Copyright (c) 2014, 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 import java.lang.reflect.Constructor;
25 import java.lang.reflect.Method;
26
27 import jdk.internal.org.objectweb.asm.ClassWriter;
28 import jdk.internal.org.objectweb.asm.Label;
29 import jdk.internal.org.objectweb.asm.MethodVisitor;
30 import static jdk.internal.org.objectweb.asm.Opcodes.*;
31
32 /**
33 * @test
34 * @bug 8051344
35 * @summary Force OSR compilation with non-empty stack at the OSR entry point.
36 * @compile -XDignore.symbol.file TestOSRWithNonEmptyStack.java
37 * @run main/othervm -XX:CompileOnly=TestCase.test TestOSRWithNonEmptyStack
38 */
39 public class TestOSRWithNonEmptyStack extends ClassLoader {
40 private static final int CLASS_FILE_VERSION = 52;
41 private static final String CLASS_NAME = "TestCase";
42 private static final String METHOD_NAME = "test";
43 private static final int ITERATIONS = 1_000_000;
44
45 private static byte[] generateTestClass() {
46 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
47
48 cw.visit(TestOSRWithNonEmptyStack.CLASS_FILE_VERSION, ACC_PUBLIC,
49 TestOSRWithNonEmptyStack.CLASS_NAME, null, "java/lang/Object",
50 null);
51
52 TestOSRWithNonEmptyStack.generateConstructor(cw);
53 TestOSRWithNonEmptyStack.generateTestMethod(cw);
54
55 cw.visitEnd();
56 return cw.toByteArray();
57 }
58
59 private static void generateConstructor(ClassWriter classWriter) {
60 MethodVisitor mv = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V",
61 null, null);
62
63 mv.visitCode();
64
65 mv.visitVarInsn(ALOAD, 0);
66 mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V",
67 false);
68 mv.visitInsn(RETURN);
69
70 mv.visitMaxs(0, 0);
71 mv.visitEnd();
72 }
73
74 private static void generateTestMethod(ClassWriter classWriter) {
75 MethodVisitor mv = classWriter.visitMethod(ACC_PUBLIC,
76 TestOSRWithNonEmptyStack.METHOD_NAME, "()V", null, null);
77 Label osrEntryPoint = new Label();
78
79 mv.visitCode();
80 // Push 'this' into stack before OSR entry point to bail out compilation
81 mv.visitVarInsn(ALOAD, 0);
82 // Setup loop counter
83 mv.visitInsn(ICONST_0);
84 mv.visitVarInsn(ISTORE, 1);
85 // Begin loop
86 mv.visitLabel(osrEntryPoint);
87 // Increment loop counter
88 mv.visitVarInsn(ILOAD, 1);
89 mv.visitInsn(ICONST_1);
90 mv.visitInsn(IADD);
91 // Duplicate it for loop condition check
92 mv.visitInsn(DUP);
93 mv.visitVarInsn(ISTORE, 1);
94 // Check loop condition
95 mv.visitLdcInsn(TestOSRWithNonEmptyStack.ITERATIONS);
96 mv.visitJumpInsn(IF_ICMPLT, osrEntryPoint);
97 // Pop 'this'.
98 mv.visitInsn(POP);
99 mv.visitInsn(RETURN);
100
101 mv.visitMaxs(0, 0);
102 mv.visitEnd();
103 }
104
105 private void run() {
106 byte[] bytecode = TestOSRWithNonEmptyStack.generateTestClass();
107
108 try {
109 Class klass = defineClass(TestOSRWithNonEmptyStack.CLASS_NAME,
110 bytecode, 0, bytecode.length);
111
112 Constructor ctor = klass.getConstructor();
113 Method method = klass.getDeclaredMethod(
114 TestOSRWithNonEmptyStack.METHOD_NAME);
115
116 Object testCase = ctor.newInstance();
117 method.invoke(testCase);
118 } catch (Exception e) {
119 throw new RuntimeException(
120 "Test bug: generated class should be valid.", e);
121 }
122 }
123
124 public static void main(String args[]) {
125 new TestOSRWithNonEmptyStack().run();
126 }
127 }