author | chegar |
Tue, 27 Oct 2015 14:18:56 +0000 | |
changeset 33606 | af4ec8a4635b |
parent 31857 | adbf29d9ca43 |
child 33730 | 30e064828045 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/* |
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* @test |
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* @summary tests on constant folding of unsafe get operations |
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* @library /testlibrary /../../test/lib |
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* @run main/bootclasspath -XX:+UnlockDiagnosticVMOptions |
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* -Xbatch -XX:-TieredCompilation |
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* -XX:+FoldStableValues |
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* -XX:+UseUnalignedAccesses |
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* java.lang.invoke.UnsafeGetConstantField |
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* @run main/bootclasspath -XX:+UnlockDiagnosticVMOptions |
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* -Xbatch -XX:-TieredCompilation |
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* -XX:+FoldStableValues |
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* -XX:-UseUnalignedAccesses |
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* java.lang.invoke.UnsafeGetConstantField |
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*/ |
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package java.lang.invoke; |
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|
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import jdk.internal.org.objectweb.asm.*; |
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import jdk.test.lib.Asserts; |
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import jdk.test.lib.Utils; |
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import jdk.internal.misc.Unsafe; |
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import static jdk.internal.org.objectweb.asm.Opcodes.*; |
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|
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public class UnsafeGetConstantField { |
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static final Class<?> THIS_CLASS = UnsafeGetConstantField.class; |
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static final Unsafe U = Unsafe.getUnsafe(); |
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|
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public static void main(String[] args) { |
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testUnsafeGetAddress(); |
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testUnsafeGetField(); |
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testUnsafeGetFieldUnaligned(); |
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System.out.println("TEST PASSED"); |
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} |
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|
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static final long nativeAddr = U.allocateMemory(16); |
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static void testUnsafeGetAddress() { |
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long cookie = 0x12345678L; |
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U.putAddress(nativeAddr, cookie); |
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for (int i = 0; i < 20_000; i++) { |
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Asserts.assertEquals(checkGetAddress(), cookie); |
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} |
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} |
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@DontInline |
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static long checkGetAddress() { |
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return U.getAddress(nativeAddr); |
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} |
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|
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static void testUnsafeGetField() { |
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int[] testedFlags = new int[] { 0, ACC_STATIC, ACC_FINAL, (ACC_STATIC | ACC_FINAL) }; |
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boolean[] boolValues = new boolean[] { false, true }; |
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String[] modes = new String[] { "", "Volatile" }; |
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|
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for (JavaType t : JavaType.values()) { |
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for (int flags : testedFlags) { |
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for (boolean stable : boolValues) { |
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for (boolean hasDefaultValue : boolValues) { |
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for (String suffix : modes) { |
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runTest(t, flags, stable, hasDefaultValue, suffix); |
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} |
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} |
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} |
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} |
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} |
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} |
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static void testUnsafeGetFieldUnaligned() { |
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JavaType[] types = new JavaType[] { JavaType.S, JavaType.C, JavaType.I, JavaType.J }; |
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int[] testedFlags = new int[] { 0, ACC_STATIC, ACC_FINAL, (ACC_STATIC | ACC_FINAL) }; |
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boolean[] boolValues = new boolean[] { false, true }; |
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|
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for (JavaType t : types) { |
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for (int flags : testedFlags) { |
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for (boolean stable : boolValues) { |
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for (boolean hasDefaultValue : boolValues) { |
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runTest(t, flags, stable, hasDefaultValue, "Unaligned"); |
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} |
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} |
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} |
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} |
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} |
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|
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static void runTest(JavaType t, int flags, boolean stable, boolean hasDefaultValue, String postfix) { |
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Generator g = new Generator(t, flags, stable, hasDefaultValue, postfix); |
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Test test = g.generate(); |
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System.out.printf("type=%s flags=%d stable=%b default=%b post=%s\n", |
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t.typeName, flags, stable, hasDefaultValue, postfix); |
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// Trigger compilation |
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for (int i = 0; i < 20_000; i++) { |
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Asserts.assertEQ(test.testDirect(), test.testUnsafe()); |
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} |
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} |
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|
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interface Test { |
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Object testDirect(); |
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Object testUnsafe(); |
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} |
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|
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enum JavaType { |
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Z("Boolean", true), |
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B("Byte", new Byte((byte)-1)), |
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S("Short", new Short((short)-1)), |
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C("Char", Character.MAX_VALUE), |
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|
129 |
I("Int", -1), |
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|
130 |
J("Long", -1L), |
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|
131 |
F("Float", -1F), |
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|
132 |
D("Double", -1D), |
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|
133 |
L("Object", new Object()); |
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|
134 |
|
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|
135 |
String typeName; |
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|
136 |
Object value; |
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|
137 |
String wrapper; |
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|
138 |
JavaType(String name, Object value) { |
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|
139 |
this.typeName = name; |
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|
140 |
this.value = value; |
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|
141 |
this.wrapper = internalName(value.getClass()); |
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|
142 |
} |
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|
143 |
|
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|
144 |
String desc() { |
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|
145 |
if (this == JavaType.L) { |
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|
146 |
return "Ljava/lang/Object;"; |
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|
147 |
} else { |
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|
148 |
return toString(); |
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|
149 |
} |
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|
150 |
} |
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|
151 |
} |
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|
152 |
|
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153 |
static String internalName(Class cls) { |
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154 |
return cls.getName().replace('.', '/'); |
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|
155 |
} |
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|
156 |
static String descriptor(Class cls) { |
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|
157 |
return String.format("L%s;", internalName(cls)); |
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|
158 |
} |
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|
159 |
|
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|
160 |
/** |
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|
161 |
* Sample generated class: |
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|
162 |
* static class T1 implements Test { |
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|
163 |
* final int f = -1; |
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|
164 |
* static final long FIELD_OFFSET; |
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|
165 |
* static final T1 t = new T1(); |
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|
166 |
* static { |
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|
167 |
* FIELD_OFFSET = U.objectFieldOffset(T1.class.getDeclaredField("f")); |
adbf29d9ca43
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|
168 |
* } |
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|
169 |
* public Object testDirect() { return t.f; } |
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|
170 |
* public Object testUnsafe() { return U.getInt(t, FIELD_OFFSET); } |
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|
171 |
* } |
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|
172 |
*/ |
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|
173 |
static class Generator { |
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|
174 |
static final String FIELD_NAME = "f"; |
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|
175 |
static final String UNSAFE_NAME = internalName(Unsafe.class); |
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|
176 |
static final String UNSAFE_DESC = descriptor(Unsafe.class); |
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|
177 |
|
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|
178 |
final JavaType type; |
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|
179 |
final int flags; |
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|
180 |
final boolean stable; |
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|
181 |
final boolean hasDefaultValue; |
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|
182 |
final String nameSuffix; |
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|
183 |
|
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|
184 |
final String className; |
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|
185 |
final String classDesc; |
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|
186 |
final String fieldDesc; |
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|
187 |
|
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|
188 |
Generator(JavaType t, int flags, boolean stable, boolean hasDefaultValue, String suffix) { |
adbf29d9ca43
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|
189 |
this.type = t; |
adbf29d9ca43
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|
190 |
this.flags = flags; |
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|
191 |
this.stable = stable; |
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|
192 |
this.hasDefaultValue = hasDefaultValue; |
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|
193 |
this.nameSuffix = suffix; |
adbf29d9ca43
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changeset
|
194 |
|
adbf29d9ca43
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|
195 |
fieldDesc = type.desc(); |
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|
196 |
className = String.format("%s$Test%s%s__f=%d__s=%b__d=%b", internalName(THIS_CLASS), type.typeName, |
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|
197 |
suffix, flags, stable, hasDefaultValue); |
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|
198 |
classDesc = String.format("L%s;", className); |
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|
199 |
} |
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vlivanov
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changeset
|
200 |
|
adbf29d9ca43
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vlivanov
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changeset
|
201 |
byte[] generateClassFile() { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
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parents:
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changeset
|
202 |
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES); |
adbf29d9ca43
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|
203 |
cw.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC | Opcodes.ACC_SUPER, className, null, "java/lang/Object", |
adbf29d9ca43
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|
204 |
new String[]{ internalName(Test.class) }); |
adbf29d9ca43
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changeset
|
205 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
206 |
// Declare fields |
adbf29d9ca43
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vlivanov
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changeset
|
207 |
cw.visitField(ACC_FINAL | ACC_STATIC, "t", classDesc, null, null).visitEnd(); |
adbf29d9ca43
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vlivanov
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changeset
|
208 |
cw.visitField(ACC_FINAL | ACC_STATIC, "FIELD_OFFSET", "J", null, null).visitEnd(); |
adbf29d9ca43
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vlivanov
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|
209 |
cw.visitField(ACC_FINAL | ACC_STATIC, "U", UNSAFE_DESC, null, null).visitEnd(); |
adbf29d9ca43
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vlivanov
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changeset
|
210 |
if (isStatic()) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
211 |
cw.visitField(ACC_FINAL | ACC_STATIC, "STATIC_BASE", "Ljava/lang/Object;", null, null).visitEnd(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
212 |
} |
adbf29d9ca43
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vlivanov
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changeset
|
213 |
|
adbf29d9ca43
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|
214 |
FieldVisitor fv = cw.visitField(flags, FIELD_NAME, fieldDesc, null, null); |
adbf29d9ca43
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vlivanov
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changeset
|
215 |
if (stable) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
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changeset
|
216 |
fv.visitAnnotation(descriptor(Stable.class), true); |
adbf29d9ca43
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vlivanov
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changeset
|
217 |
} |
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vlivanov
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changeset
|
218 |
fv.visitEnd(); |
adbf29d9ca43
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vlivanov
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changeset
|
219 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
220 |
// Methods |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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|
221 |
{ // <init> |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
222 |
MethodVisitor mv = cw.visitMethod(0, "<init>", "()V", null, null); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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|
223 |
mv.visitCode(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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diff
changeset
|
224 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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|
225 |
mv.visitVarInsn(ALOAD, 0); |
adbf29d9ca43
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vlivanov
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|
226 |
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
adbf29d9ca43
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vlivanov
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|
227 |
if (!isStatic()) { |
adbf29d9ca43
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vlivanov
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changeset
|
228 |
initField(mv); |
adbf29d9ca43
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vlivanov
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diff
changeset
|
229 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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diff
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|
230 |
mv.visitInsn(RETURN); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
231 |
|
adbf29d9ca43
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vlivanov
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|
232 |
mv.visitMaxs(0, 0); |
adbf29d9ca43
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vlivanov
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changeset
|
233 |
mv.visitEnd(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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diff
changeset
|
234 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
235 |
|
adbf29d9ca43
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vlivanov
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|
236 |
{ // public Object testDirect() { return t.f; } |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
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|
237 |
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testDirect", "()Ljava/lang/Object;", null, null); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
238 |
mv.visitCode(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
239 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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|
240 |
getFieldValue(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
241 |
wrapResult(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
242 |
mv.visitInsn(ARETURN); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
243 |
|
adbf29d9ca43
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vlivanov
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|
244 |
mv.visitMaxs(0, 0); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
245 |
mv.visitEnd(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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diff
changeset
|
246 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
247 |
|
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|
248 |
{ // public Object testUnsafe() { return U.getInt(t, FIELD_OFFSET); } |
adbf29d9ca43
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|
249 |
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "testUnsafe", "()Ljava/lang/Object;", null, null); |
adbf29d9ca43
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vlivanov
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changeset
|
250 |
mv.visitCode(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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diff
changeset
|
251 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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|
252 |
getFieldValueUnsafe(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
253 |
wrapResult(mv); |
adbf29d9ca43
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vlivanov
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changeset
|
254 |
mv.visitInsn(ARETURN); |
adbf29d9ca43
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vlivanov
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changeset
|
255 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
256 |
mv.visitMaxs(0, 0); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
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changeset
|
257 |
mv.visitEnd(); |
adbf29d9ca43
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vlivanov
parents:
diff
changeset
|
258 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
259 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
260 |
{ // <clinit> |
adbf29d9ca43
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vlivanov
parents:
diff
changeset
|
261 |
MethodVisitor mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
262 |
mv.visitCode(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
263 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
264 |
// Cache Unsafe instance |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
265 |
mv.visitMethodInsn(INVOKESTATIC, UNSAFE_NAME, "getUnsafe", "()"+UNSAFE_DESC, false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
266 |
mv.visitFieldInsn(PUTSTATIC, className, "U", UNSAFE_DESC); |
adbf29d9ca43
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vlivanov
parents:
diff
changeset
|
267 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
268 |
// Create test object instance |
adbf29d9ca43
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vlivanov
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changeset
|
269 |
mv.visitTypeInsn(NEW, className); |
adbf29d9ca43
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vlivanov
parents:
diff
changeset
|
270 |
mv.visitInsn(DUP); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
271 |
mv.visitMethodInsn(INVOKESPECIAL, className, "<init>", "()V", false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
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parents:
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changeset
|
272 |
mv.visitFieldInsn(PUTSTATIC, className, "t", classDesc); |
adbf29d9ca43
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vlivanov
parents:
diff
changeset
|
273 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
274 |
// Compute field offset |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
275 |
getUnsafe(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
276 |
getField(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
277 |
mv.visitMethodInsn(INVOKEVIRTUAL, UNSAFE_NAME, (isStatic() ? "staticFieldOffset" : "objectFieldOffset"), |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
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parents:
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changeset
|
278 |
"(Ljava/lang/reflect/Field;)J", false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
279 |
mv.visitFieldInsn(PUTSTATIC, className, "FIELD_OFFSET", "J"); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
280 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
281 |
// Compute base offset for static field |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
282 |
if (isStatic()) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
283 |
getUnsafe(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
284 |
getField(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
285 |
mv.visitMethodInsn(INVOKEVIRTUAL, UNSAFE_NAME, "staticFieldBase", "(Ljava/lang/reflect/Field;)Ljava/lang/Object;", false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
286 |
mv.visitFieldInsn(PUTSTATIC, className, "STATIC_BASE", "Ljava/lang/Object;"); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
287 |
initField(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
288 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
289 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
290 |
mv.visitInsn(RETURN); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
291 |
mv.visitMaxs(0, 0); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
292 |
mv.visitEnd(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
293 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
294 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
295 |
return cw.toByteArray(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
296 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
297 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
298 |
Test generate() { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
299 |
byte[] classFile = generateClassFile(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
300 |
Class<?> c = U.defineClass(className, classFile, 0, classFile.length, THIS_CLASS.getClassLoader(), null); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
301 |
try { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
302 |
return (Test) c.newInstance(); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
303 |
} catch(Exception e) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
304 |
throw new Error(e); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
305 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
306 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
307 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
308 |
boolean isStatic() { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
309 |
return (flags & ACC_STATIC) > 0; |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
310 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
311 |
boolean isFinal() { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
312 |
return (flags & ACC_FINAL) > 0; |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
313 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
314 |
void getUnsafe(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
315 |
mv.visitFieldInsn(GETSTATIC, className, "U", UNSAFE_DESC); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
316 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
317 |
void getField(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
318 |
mv.visitLdcInsn(Type.getType(classDesc)); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
319 |
mv.visitLdcInsn(FIELD_NAME); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
320 |
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredField", "(Ljava/lang/String;)Ljava/lang/reflect/Field;", false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
321 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
322 |
void getFieldValue(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
323 |
if (isStatic()) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
324 |
mv.visitFieldInsn(GETSTATIC, className, FIELD_NAME, fieldDesc); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
325 |
} else { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
326 |
mv.visitFieldInsn(GETSTATIC, className, "t", classDesc); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
327 |
mv.visitFieldInsn(GETFIELD, className, FIELD_NAME, fieldDesc); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
328 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
329 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
330 |
void getFieldValueUnsafe(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
331 |
getUnsafe(mv); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
332 |
if (isStatic()) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
333 |
mv.visitFieldInsn(GETSTATIC, className, "STATIC_BASE", "Ljava/lang/Object;"); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
334 |
} else { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
335 |
mv.visitFieldInsn(GETSTATIC, className, "t", classDesc); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
336 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
337 |
mv.visitFieldInsn(GETSTATIC, className, "FIELD_OFFSET", "J"); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
338 |
String name = "get" + type.typeName + nameSuffix; |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
339 |
mv.visitMethodInsn(INVOKEVIRTUAL, UNSAFE_NAME, name, "(Ljava/lang/Object;J)" + type.desc(), false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
340 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
341 |
void wrapResult(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
342 |
if (type != JavaType.L) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
343 |
String desc = String.format("(%s)L%s;", type.desc(), type.wrapper); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
344 |
mv.visitMethodInsn(INVOKESTATIC, type.wrapper, "valueOf", desc, false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
345 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
346 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
347 |
void initField(MethodVisitor mv) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
348 |
if (hasDefaultValue) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
349 |
return; // Nothing to do |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
350 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
351 |
if (!isStatic()) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
352 |
mv.visitVarInsn(ALOAD, 0); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
353 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
354 |
switch (type) { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
355 |
case L: { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
356 |
mv.visitTypeInsn(NEW, "java/lang/Object"); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
357 |
mv.visitInsn(DUP); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
358 |
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
359 |
|
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
360 |
break; |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
361 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
362 |
default: { |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
363 |
mv.visitLdcInsn(type.value); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
364 |
break; |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
365 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
366 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
367 |
mv.visitFieldInsn((isStatic() ? PUTSTATIC : PUTFIELD), className, FIELD_NAME, fieldDesc); |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
368 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
369 |
} |
adbf29d9ca43
8078629: VM should constant fold Unsafe.get*() loads from final fields
vlivanov
parents:
diff
changeset
|
370 |
} |