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 package org.graalvm.compiler.nodes.java;
24
25 import static org.graalvm.compiler.graph.iterators.NodePredicates.isNotA;
26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
27
28 import jdk.vm.ci.meta.ConstantReflectionProvider;
29 import org.graalvm.compiler.core.common.spi.ConstantFieldProvider;
30 import org.graalvm.compiler.core.common.type.Stamp;
31 import org.graalvm.compiler.core.common.type.StampFactory;
32 import org.graalvm.compiler.core.common.type.StampPair;
33 import org.graalvm.compiler.graph.NodeClass;
34 import org.graalvm.compiler.graph.spi.Canonicalizable;
35 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
36 import org.graalvm.compiler.nodeinfo.NodeCycles;
37 import org.graalvm.compiler.nodeinfo.NodeInfo;
38 import org.graalvm.compiler.nodes.ConstantNode;
39 import org.graalvm.compiler.nodes.DeoptimizeNode;
40 import org.graalvm.compiler.nodes.PhiNode;
41 import org.graalvm.compiler.nodes.ValueNode;
42 import org.graalvm.compiler.nodes.ValuePhiNode;
43 import org.graalvm.compiler.nodes.spi.UncheckedInterfaceProvider;
44 import org.graalvm.compiler.nodes.spi.Virtualizable;
45 import org.graalvm.compiler.nodes.spi.VirtualizerTool;
46 import org.graalvm.compiler.nodes.type.StampTool;
47 import org.graalvm.compiler.nodes.util.ConstantFoldUtil;
48 import org.graalvm.compiler.nodes.virtual.VirtualInstanceNode;
49 import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
50
51 import jdk.vm.ci.meta.Assumptions;
52 import jdk.vm.ci.meta.DeoptimizationAction;
53 import jdk.vm.ci.meta.DeoptimizationReason;
54 import jdk.vm.ci.meta.JavaConstant;
55 import jdk.vm.ci.meta.JavaKind;
56 import jdk.vm.ci.meta.MetaAccessProvider;
57 import jdk.vm.ci.meta.ResolvedJavaField;
58 import org.graalvm.compiler.options.OptionValues;
59
60 /**
61 * The {@code LoadFieldNode} represents a read of a static or instance field.
62 */
63 @NodeInfo(nameTemplate = "LoadField#{p#field/s}")
64 public final class LoadFieldNode extends AccessFieldNode implements Canonicalizable.Unary<ValueNode>, Virtualizable, UncheckedInterfaceProvider {
65
66 public static final NodeClass<LoadFieldNode> TYPE = NodeClass.create(LoadFieldNode.class);
67
68 private final Stamp uncheckedStamp;
69
70 protected LoadFieldNode(StampPair stamp, ValueNode object, ResolvedJavaField field) {
71 super(TYPE, stamp.getTrustedStamp(), object, field);
72 this.uncheckedStamp = stamp.getUncheckedStamp();
73 }
74
75 public static LoadFieldNode create(Assumptions assumptions, ValueNode object, ResolvedJavaField field) {
76 return new LoadFieldNode(StampFactory.forDeclaredType(assumptions, field.getType(), false), object, field);
77 }
78
133
134 /**
135 * Gets a constant value for this load if possible.
136 */
137 public ConstantNode asConstant(CanonicalizerTool tool, ValueNode forObject) {
138 return asConstant(tool.getConstantFieldProvider(), tool.getConstantReflection(),
139 tool.getMetaAccess(), tool.getOptions(), forObject, field);
140 }
141
142 private static ConstantNode asConstant(ConstantFieldProvider constantFields, ConstantReflectionProvider constantReflection,
143 MetaAccessProvider metaAccess, OptionValues options, ValueNode forObject, ResolvedJavaField field) {
144 if (field.isStatic()) {
145 return ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAccess, field, null, options);
146 } else if (forObject.isConstant() && !forObject.isNullConstant()) {
147 return ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAccess, field, forObject.asJavaConstant(), options);
148 }
149 return null;
150 }
151
152 public ConstantNode asConstant(CanonicalizerTool tool, JavaConstant constant) {
153 return ConstantFoldUtil.tryConstantFold(tool.getConstantFieldProvider(), tool.getConstantReflection(), tool.getMetaAccess(), field(), constant, getOptions());
154 }
155
156 private static PhiNode asPhi(ConstantFieldProvider constantFields, ConstantReflectionProvider constantReflection,
157 MetaAccessProvider metaAcccess, OptionValues options, ValueNode forObject, ResolvedJavaField field, Stamp stamp) {
158 if (!field.isStatic() && field.isFinal() && forObject instanceof ValuePhiNode && ((ValuePhiNode) forObject).values().filter(isNotA(ConstantNode.class)).isEmpty()) {
159 PhiNode phi = (PhiNode) forObject;
160 ConstantNode[] constantNodes = new ConstantNode[phi.valueCount()];
161 for (int i = 0; i < phi.valueCount(); i++) {
162 ConstantNode constant = ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAcccess, field, phi.valueAt(i).asJavaConstant(),
163 options);
164 if (constant == null) {
165 return null;
166 }
167 constantNodes[i] = constant;
168 }
169 return new ValuePhiNode(stamp, phi.merge(), constantNodes);
170 }
171 return null;
172 }
173
|
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 package org.graalvm.compiler.nodes.java;
24
25 import static org.graalvm.compiler.graph.iterators.NodePredicates.isNotA;
26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
27
28 import org.graalvm.compiler.core.common.spi.ConstantFieldProvider;
29 import org.graalvm.compiler.core.common.type.Stamp;
30 import org.graalvm.compiler.core.common.type.StampFactory;
31 import org.graalvm.compiler.core.common.type.StampPair;
32 import org.graalvm.compiler.graph.NodeClass;
33 import org.graalvm.compiler.graph.spi.Canonicalizable;
34 import org.graalvm.compiler.graph.spi.CanonicalizerTool;
35 import org.graalvm.compiler.nodeinfo.NodeCycles;
36 import org.graalvm.compiler.nodeinfo.NodeInfo;
37 import org.graalvm.compiler.nodes.ConstantNode;
38 import org.graalvm.compiler.nodes.DeoptimizeNode;
39 import org.graalvm.compiler.nodes.PhiNode;
40 import org.graalvm.compiler.nodes.ValueNode;
41 import org.graalvm.compiler.nodes.ValuePhiNode;
42 import org.graalvm.compiler.nodes.spi.UncheckedInterfaceProvider;
43 import org.graalvm.compiler.nodes.spi.Virtualizable;
44 import org.graalvm.compiler.nodes.spi.VirtualizerTool;
45 import org.graalvm.compiler.nodes.type.StampTool;
46 import org.graalvm.compiler.nodes.util.ConstantFoldUtil;
47 import org.graalvm.compiler.nodes.virtual.VirtualInstanceNode;
48 import org.graalvm.compiler.nodes.virtual.VirtualObjectNode;
49 import org.graalvm.compiler.options.OptionValues;
50
51 import jdk.vm.ci.meta.Assumptions;
52 import jdk.vm.ci.meta.ConstantReflectionProvider;
53 import jdk.vm.ci.meta.DeoptimizationAction;
54 import jdk.vm.ci.meta.DeoptimizationReason;
55 import jdk.vm.ci.meta.JavaConstant;
56 import jdk.vm.ci.meta.JavaKind;
57 import jdk.vm.ci.meta.MetaAccessProvider;
58 import jdk.vm.ci.meta.ResolvedJavaField;
59
60 /**
61 * The {@code LoadFieldNode} represents a read of a static or instance field.
62 */
63 @NodeInfo(nameTemplate = "LoadField#{p#field/s}")
64 public final class LoadFieldNode extends AccessFieldNode implements Canonicalizable.Unary<ValueNode>, Virtualizable, UncheckedInterfaceProvider {
65
66 public static final NodeClass<LoadFieldNode> TYPE = NodeClass.create(LoadFieldNode.class);
67
68 private final Stamp uncheckedStamp;
69
70 protected LoadFieldNode(StampPair stamp, ValueNode object, ResolvedJavaField field) {
71 super(TYPE, stamp.getTrustedStamp(), object, field);
72 this.uncheckedStamp = stamp.getUncheckedStamp();
73 }
74
75 public static LoadFieldNode create(Assumptions assumptions, ValueNode object, ResolvedJavaField field) {
76 return new LoadFieldNode(StampFactory.forDeclaredType(assumptions, field.getType(), false), object, field);
77 }
78
133
134 /**
135 * Gets a constant value for this load if possible.
136 */
137 public ConstantNode asConstant(CanonicalizerTool tool, ValueNode forObject) {
138 return asConstant(tool.getConstantFieldProvider(), tool.getConstantReflection(),
139 tool.getMetaAccess(), tool.getOptions(), forObject, field);
140 }
141
142 private static ConstantNode asConstant(ConstantFieldProvider constantFields, ConstantReflectionProvider constantReflection,
143 MetaAccessProvider metaAccess, OptionValues options, ValueNode forObject, ResolvedJavaField field) {
144 if (field.isStatic()) {
145 return ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAccess, field, null, options);
146 } else if (forObject.isConstant() && !forObject.isNullConstant()) {
147 return ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAccess, field, forObject.asJavaConstant(), options);
148 }
149 return null;
150 }
151
152 public ConstantNode asConstant(CanonicalizerTool tool, JavaConstant constant) {
153 return ConstantFoldUtil.tryConstantFold(tool.getConstantFieldProvider(), tool.getConstantReflection(), tool.getMetaAccess(), field(), constant, tool.getOptions());
154 }
155
156 private static PhiNode asPhi(ConstantFieldProvider constantFields, ConstantReflectionProvider constantReflection,
157 MetaAccessProvider metaAcccess, OptionValues options, ValueNode forObject, ResolvedJavaField field, Stamp stamp) {
158 if (!field.isStatic() && field.isFinal() && forObject instanceof ValuePhiNode && ((ValuePhiNode) forObject).values().filter(isNotA(ConstantNode.class)).isEmpty()) {
159 PhiNode phi = (PhiNode) forObject;
160 ConstantNode[] constantNodes = new ConstantNode[phi.valueCount()];
161 for (int i = 0; i < phi.valueCount(); i++) {
162 ConstantNode constant = ConstantFoldUtil.tryConstantFold(constantFields, constantReflection, metaAcccess, field, phi.valueAt(i).asJavaConstant(),
163 options);
164 if (constant == null) {
165 return null;
166 }
167 constantNodes[i] = constant;
168 }
169 return new ValuePhiNode(stamp, phi.merge(), constantNodes);
170 }
171 return null;
172 }
173
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