hotspot/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/ConstantNode.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2009, 2016, 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.
  */
 package org.graalvm.compiler.nodes;

 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

 import java.util.Map;

 import org.graalvm.compiler.core.common.LIRKind;
 import org.graalvm.compiler.core.common.type.AbstractObjectStamp;
 import org.graalvm.compiler.core.common.type.FloatStamp;
 import org.graalvm.compiler.core.common.type.IntegerStamp;
 import org.graalvm.compiler.core.common.type.Stamp;
 import org.graalvm.compiler.core.common.type.StampFactory;
 import org.graalvm.compiler.debug.GraalError;
 import org.graalvm.compiler.graph.Node;
 import org.graalvm.compiler.graph.NodeClass;
 import org.graalvm.compiler.graph.iterators.NodeIterable;
 import org.graalvm.compiler.lir.ConstantValue;
 import org.graalvm.compiler.nodeinfo.NodeInfo;
 import org.graalvm.compiler.nodeinfo.Verbosity;
 import org.graalvm.compiler.nodes.calc.FloatingNode;
 import org.graalvm.compiler.nodes.spi.LIRLowerable;
 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

 import jdk.vm.ci.code.CodeUtil;
 import jdk.vm.ci.meta.Constant;
 import jdk.vm.ci.meta.JavaConstant;
 import jdk.vm.ci.meta.JavaKind;
 import jdk.vm.ci.meta.MetaAccessProvider;
 import jdk.vm.ci.meta.PrimitiveConstant;

 /**
  * The {@code ConstantNode} represents a {@link Constant constant}.
  */
 @NodeInfo(nameTemplate = "C({p#rawvalue})", cycles = CYCLES_0, size = SIZE_1)
 public final class ConstantNode extends FloatingNode implements LIRLowerable {

     public static final NodeClass<ConstantNode> TYPE = NodeClass.create(ConstantNode.class);

     protected final Constant value;

     private final int stableDimension;
     private final boolean isDefaultStable;

     private static ConstantNode createPrimitive(JavaConstant value) {
         assert value.getJavaKind() != JavaKind.Object;
         return new ConstantNode(value, StampFactory.forConstant(value));
     }

     /**
      * Constructs a new node representing the specified constant.
      *
      * @param value the constant
      */
     public ConstantNode(Constant value, Stamp stamp) {
         this(value, stamp, 0, false);
     }

     private ConstantNode(Constant value, Stamp stamp, int stableDimension, boolean isDefaultStable) {
         super(TYPE, stamp);
         assert stamp != null && stamp.isCompatible(value) : stamp + " " + value;
         this.value = value;
         this.stableDimension = stableDimension;
         if (stableDimension == 0) {
             /*
              * Ensure that isDefaultStable has a canonical value to avoid having two constant nodes
              * that only differ in this field. The value of isDefaultStable is only used when we
              * have a stable array dimension.
              */
             this.isDefaultStable = false;
         } else {
             this.isDefaultStable = isDefaultStable;
         }
     }

     /**
      * @return the constant value represented by this node
      */
     public Constant getValue() {
         return value;
     }

     /**
      * @return the number of stable dimensions if this is a stable array, otherwise 0
      */
     public int getStableDimension() {
         return stableDimension;
     }

     /**
      * @return true if this is a stable array and the default elements are considered stable
      */
     public boolean isDefaultStable() {
         return isDefaultStable;
     }

     /**
      * Gathers all the {@link ConstantNode}s that are inputs to the
      * {@linkplain StructuredGraph#getNodes() live nodes} in a given graph.
      */
     public static NodeIterable<ConstantNode> getConstantNodes(StructuredGraph graph) {
         return graph.getNodes().filter(ConstantNode.class);
     }

     /**
      * Replaces this node at its usages with another node.
      */
     public void replace(StructuredGraph graph, Node replacement) {
         assert graph == graph();
         replaceAtUsagesAndDelete(replacement);
     }

     @Override
     public void generate(NodeLIRBuilderTool gen) {
         LIRKind kind = gen.getLIRGeneratorTool().getLIRKind(stamp());
         if (onlyUsedInVirtualState()) {
             gen.setResult(this, new ConstantValue(kind, value));
         } else {
             gen.setResult(this, gen.getLIRGeneratorTool().emitConstant(kind, value));
         }
     }

     private boolean onlyUsedInVirtualState() {
         for (Node n : this.usages()) {
             if (n instanceof VirtualState) {
                 // Only virtual usage.
             } else {
                 return false;
             }
         }
         return true;
     }

     public static ConstantNode forConstant(JavaConstant constant, MetaAccessProvider metaAccess, StructuredGraph graph) {
         if (constant.getJavaKind().getStackKind() == JavaKind.Int && constant.getJavaKind() != JavaKind.Int) {
             return forInt(constant.asInt(), graph);
         }
         if (constant.getJavaKind() == JavaKind.Object) {
             return unique(graph, new ConstantNode(constant, StampFactory.forConstant(constant, metaAccess)));
         } else {
             return unique(graph, createPrimitive(constant));
         }
     }

     public static ConstantNode forConstant(JavaConstant constant, int stableDimension, boolean isDefaultStable, MetaAccessProvider metaAccess) {
         if (constant.getJavaKind().getStackKind() == JavaKind.Int && constant.getJavaKind() != JavaKind.Int) {
             return forInt(constant.asInt());
         }
         if (constant.getJavaKind() == JavaKind.Object) {
             return new ConstantNode(constant, StampFactory.forConstant(constant, metaAccess), stableDimension, isDefaultStable);
         } else {
             assert stableDimension == 0;
             return createPrimitive(constant);
         }
     }

     public static ConstantNode forConstant(JavaConstant array, MetaAccessProvider metaAccess) {
         return forConstant(array, 0, false, metaAccess);
     }

     public static ConstantNode forConstant(Stamp stamp, Constant constant, MetaAccessProvider metaAccess, StructuredGraph graph) {
         return graph.unique(new ConstantNode(constant, stamp.constant(constant, metaAccess)));
     }

     public static ConstantNode forConstant(Stamp stamp, Constant constant, int stableDimension, boolean isDefaultStable, MetaAccessProvider metaAccess) {
         return new ConstantNode(constant, stamp.constant(constant, metaAccess), stableDimension, isDefaultStable);
     }

     public static ConstantNode forConstant(Stamp stamp, Constant constant, MetaAccessProvider metaAccess) {
         return new ConstantNode(constant, stamp.constant(constant, metaAccess));
     }

     /**
      * Returns a node for a Java primitive.
      */
     public static ConstantNode forPrimitive(JavaConstant constant, StructuredGraph graph) {
         assert constant.getJavaKind() != JavaKind.Object;
         return forConstant(constant, null, graph);
     }

     /**
      * Returns a node for a Java primitive.
      */
     public static ConstantNode forPrimitive(JavaConstant constant) {
         assert constant.getJavaKind() != JavaKind.Object;
         return forConstant(constant, null);
     }

     /**
      * Returns a node for a primitive of a given type.
      */
     public static ConstantNode forPrimitive(Stamp stamp, JavaConstant constant, StructuredGraph graph) {
         if (stamp instanceof IntegerStamp) {
             assert constant.getJavaKind().isNumericInteger() && stamp.getStackKind() == constant.getJavaKind().getStackKind();
             IntegerStamp istamp = (IntegerStamp) stamp;
             return forIntegerBits(istamp.getBits(), constant, graph);
         } else {
             assert constant.getJavaKind().isNumericFloat() && stamp.getStackKind() == constant.getJavaKind();
             return forPrimitive(constant, graph);
         }
     }

     /**
      * Returns a node for a primitive of a given type.
      */
     public static ConstantNode forPrimitive(Stamp stamp, Constant constant) {
         if (stamp instanceof IntegerStamp) {
             PrimitiveConstant primitive = (PrimitiveConstant) constant;
             assert primitive.getJavaKind().isNumericInteger() && stamp.getStackKind() == primitive.getJavaKind().getStackKind();
             IntegerStamp istamp = (IntegerStamp) stamp;
             return forIntegerBits(istamp.getBits(), primitive);
         } else if (stamp instanceof FloatStamp) {
             PrimitiveConstant primitive = (PrimitiveConstant) constant;
             assert primitive.getJavaKind().isNumericFloat() && stamp.getStackKind() == primitive.getJavaKind();
             return forConstant(primitive, null);
         } else {
             assert !(stamp instanceof AbstractObjectStamp);
             return new ConstantNode(constant, stamp.constant(constant, null));
         }
     }

     /**
      * Returns a node for a double constant.
      *
      * @param d the double value for which to create the instruction
      * @return a node for a double constant
      */
     public static ConstantNode forDouble(double d, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forDouble(d)));
     }

     /**
      * Returns a node for a double constant.
      *
      * @param d the double value for which to create the instruction
      * @return a node for a double constant
      */
     public static ConstantNode forDouble(double d) {
         return createPrimitive(JavaConstant.forDouble(d));
     }

     /**
      * Returns a node for a float constant.
      *
      * @param f the float value for which to create the instruction
      * @return a node for a float constant
      */
     public static ConstantNode forFloat(float f, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forFloat(f)));
     }

     /**
      * Returns a node for a float constant.
      *
      * @param f the float value for which to create the instruction
      * @return a node for a float constant
      */
     public static ConstantNode forFloat(float f) {
         return createPrimitive(JavaConstant.forFloat(f));
     }

     /**
      * Returns a node for an long constant.
      *
      * @param i the long value for which to create the instruction
      * @return a node for an long constant
      */
     public static ConstantNode forLong(long i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forLong(i)));
     }

     /**
      * Returns a node for an long constant.
      *
      * @param i the long value for which to create the instruction
      * @return a node for an long constant
      */
     public static ConstantNode forLong(long i) {
         return createPrimitive(JavaConstant.forLong(i));
     }

     /**
      * Returns a node for an integer constant.
      *
      * @param i the integer value for which to create the instruction
      * @return a node for an integer constant
      */
     public static ConstantNode forInt(int i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forInt(i)));
     }

     /**
      * Returns a node for an integer constant.
      *
      * @param i the integer value for which to create the instruction
      * @return a node for an integer constant
      */
     public static ConstantNode forInt(int i) {
         return createPrimitive(JavaConstant.forInt(i));
     }

     /**
      * Returns a node for a boolean constant.
      *
      * @param i the boolean value for which to create the instruction
      * @return a node representing the boolean
      */
     public static ConstantNode forBoolean(boolean i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forInt(i ? 1 : 0)));
     }

     /**
      * Returns a node for a boolean constant.
      *
      * @param i the boolean value for which to create the instruction
      * @return a node representing the boolean
      */
     public static ConstantNode forBoolean(boolean i) {
         return createPrimitive(JavaConstant.forInt(i ? 1 : 0));
     }

     /**
      * Returns a node for a byte constant.
      *
      * @param i the byte value for which to create the instruction
      * @return a node representing the byte
      */
     public static ConstantNode forByte(byte i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forInt(i)));
     }

     /**
      * Returns a node for a char constant.
      *
      * @param i the char value for which to create the instruction
      * @return a node representing the char
      */
     public static ConstantNode forChar(char i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forInt(i)));
     }

     /**
      * Returns a node for a short constant.
      *
      * @param i the short value for which to create the instruction
      * @return a node representing the short
      */
     public static ConstantNode forShort(short i, StructuredGraph graph) {
         return unique(graph, createPrimitive(JavaConstant.forInt(i)));
     }

     private static ConstantNode unique(StructuredGraph graph, ConstantNode node) {
         return graph.unique(node);
     }

     private static ConstantNode forIntegerBits(int bits, JavaConstant constant, StructuredGraph graph) {
         long value = constant.asLong();
         long bounds = CodeUtil.signExtend(value, bits);
         return unique(graph, new ConstantNode(constant, StampFactory.forInteger(bits, bounds, bounds)));
     }

     /**
      * Returns a node for a constant integer that's not directly representable as Java primitive
      * (e.g. short).
      */
     public static ConstantNode forIntegerBits(int bits, long value, StructuredGraph graph) {
         return forIntegerBits(bits, JavaConstant.forPrimitiveInt(bits, value), graph);
     }

     private static ConstantNode forIntegerBits(int bits, JavaConstant constant) {
         long value = constant.asLong();
         long bounds = CodeUtil.signExtend(value, bits);
         return new ConstantNode(constant, StampFactory.forInteger(bits, bounds, bounds));
     }

     /**
      * Returns a node for a constant integer that's not directly representable as Java primitive
      * (e.g. short).
      */
     public static ConstantNode forIntegerBits(int bits, long value) {
         return forIntegerBits(bits, JavaConstant.forPrimitiveInt(bits, value));
     }

     /**
      * Returns a node for a constant integer that's compatible to a given stamp.
      */
     public static ConstantNode forIntegerStamp(Stamp stamp, long value, StructuredGraph graph) {
         if (stamp instanceof IntegerStamp) {
             IntegerStamp intStamp = (IntegerStamp) stamp;
             return forIntegerBits(intStamp.getBits(), value, graph);
         } else {
             return forIntegerKind(stamp.getStackKind(), value, graph);
         }
     }

     /**
      * Returns a node for a constant integer that's compatible to a given stamp.
      */
     public static ConstantNode forIntegerStamp(Stamp stamp, long value) {
         if (stamp instanceof IntegerStamp) {
             IntegerStamp intStamp = (IntegerStamp) stamp;
             return forIntegerBits(intStamp.getBits(), value);
         } else {
             return forIntegerKind(stamp.getStackKind(), value);
         }
     }

     public static ConstantNode forIntegerKind(JavaKind kind, long value, StructuredGraph graph) {
         switch (kind) {
             case Byte:
             case Short:
             case Int:
                 return ConstantNode.forInt((int) value, graph);
             case Long:
                 return ConstantNode.forLong(value, graph);
             default:
                 throw GraalError.shouldNotReachHere("unknown kind " + kind);
         }
     }

     public static ConstantNode forIntegerKind(JavaKind kind, long value) {
         switch (kind) {
             case Byte:
             case Short:
             case Int:
                 return createPrimitive(JavaConstant.forInt((int) value));
             case Long:
                 return createPrimitive(JavaConstant.forLong(value));
             default:
                 throw GraalError.shouldNotReachHere("unknown kind " + kind);
         }
     }

     public static ConstantNode forFloatingKind(JavaKind kind, double value, StructuredGraph graph) {
         switch (kind) {
             case Float:
                 return ConstantNode.forFloat((float) value, graph);
             case Double:
                 return ConstantNode.forDouble(value, graph);
             default:
                 throw GraalError.shouldNotReachHere("unknown kind " + kind);
         }
     }

     public static ConstantNode forFloatingKind(JavaKind kind, double value) {
         switch (kind) {
             case Float:
                 return ConstantNode.forFloat((float) value);
             case Double:
                 return ConstantNode.forDouble(value);
             default:
                 throw GraalError.shouldNotReachHere("unknown kind " + kind);
         }
     }

     /**
      * Returns a node for a constant double that's compatible to a given stamp.
      */
     public static ConstantNode forFloatingStamp(Stamp stamp, double value, StructuredGraph graph) {
         return forFloatingKind(stamp.getStackKind(), value, graph);
     }

     /**
      * Returns a node for a constant double that's compatible to a given stamp.
      */
     public static ConstantNode forFloatingStamp(Stamp stamp, double value) {
         return forFloatingKind(stamp.getStackKind(), value);
     }

     public static ConstantNode defaultForKind(JavaKind kind, StructuredGraph graph) {
         return unique(graph, defaultForKind(kind));
     }

     public static ConstantNode defaultForKind(JavaKind kind) {
         switch (kind) {
             case Boolean:
             case Byte:
             case Char:
             case Short:
             case Int:
                 return ConstantNode.forInt(0);
             case Double:
                 return ConstantNode.forDouble(0.0);
             case Float:
                 return ConstantNode.forFloat(0.0f);
             case Long:
                 return ConstantNode.forLong(0L);
             case Object:
                 return ConstantNode.forConstant(JavaConstant.NULL_POINTER, null);
             default:
                 return null;
         }
     }

     @Override
     public Map<Object, Object> getDebugProperties(Map<Object, Object> map) {
         Map<Object, Object> properties = super.getDebugProperties(map);
         properties.put("rawvalue", value.toValueString());
         return properties;
     }

     @Override
     public String toString(Verbosity verbosity) {
         if (verbosity == Verbosity.Name) {
             return super.toString(Verbosity.Name) + "(" + value.toValueString() + ")";
         } else {
             return super.toString(verbosity);
         }
     }
 }
	/*
	* Copyright (c) 2009, 2016, 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.
	*/
	package org.graalvm.compiler.nodes;

	import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
	import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

	import java.util.Map;

	import org.graalvm.compiler.core.common.LIRKind;
	import org.graalvm.compiler.core.common.type.AbstractObjectStamp;
	import org.graalvm.compiler.core.common.type.FloatStamp;
	import org.graalvm.compiler.core.common.type.IntegerStamp;
	import org.graalvm.compiler.core.common.type.Stamp;
	import org.graalvm.compiler.core.common.type.StampFactory;
	import org.graalvm.compiler.debug.GraalError;
	import org.graalvm.compiler.graph.Node;
	import org.graalvm.compiler.graph.NodeClass;
	import org.graalvm.compiler.graph.iterators.NodeIterable;
	import org.graalvm.compiler.lir.ConstantValue;
	import org.graalvm.compiler.nodeinfo.NodeInfo;
	import org.graalvm.compiler.nodeinfo.Verbosity;
	import org.graalvm.compiler.nodes.calc.FloatingNode;
	import org.graalvm.compiler.nodes.spi.LIRLowerable;
	import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

	import jdk.vm.ci.code.CodeUtil;
	import jdk.vm.ci.meta.Constant;
	import jdk.vm.ci.meta.JavaConstant;
	import jdk.vm.ci.meta.JavaKind;
	import jdk.vm.ci.meta.MetaAccessProvider;
	import jdk.vm.ci.meta.PrimitiveConstant;

	/**
	* The {@code ConstantNode} represents a {@link Constant constant}.
	*/
	@NodeInfo(nameTemplate = "C({p#rawvalue})", cycles = CYCLES_0, size = SIZE_1)
	public final class ConstantNode extends FloatingNode implements LIRLowerable {

	public static final NodeClass<ConstantNode> TYPE = NodeClass.create(ConstantNode.class);

	protected final Constant value;

	private final int stableDimension;
	private final boolean isDefaultStable;

	private static ConstantNode createPrimitive(JavaConstant value) {
	assert value.getJavaKind() != JavaKind.Object;
	return new ConstantNode(value, StampFactory.forConstant(value));
	}

	/**
	* Constructs a new node representing the specified constant.
	*
	* @param value the constant
	*/
	public ConstantNode(Constant value, Stamp stamp) {
	this(value, stamp, 0, false);
	}

	private ConstantNode(Constant value, Stamp stamp, int stableDimension, boolean isDefaultStable) {
	super(TYPE, stamp);
	assert stamp != null && stamp.isCompatible(value) : stamp + " " + value;
	this.value = value;
	this.stableDimension = stableDimension;
	if (stableDimension == 0) {
	/*
	* Ensure that isDefaultStable has a canonical value to avoid having two constant nodes
	* that only differ in this field. The value of isDefaultStable is only used when we
	* have a stable array dimension.
	*/
	this.isDefaultStable = false;
	} else {
	this.isDefaultStable = isDefaultStable;
	}
	}

	/**
	* @return the constant value represented by this node
	*/
	public Constant getValue() {
	return value;
	}

	/**
	* @return the number of stable dimensions if this is a stable array, otherwise 0
	*/
	public int getStableDimension() {
	return stableDimension;
	}

	/**
	* @return true if this is a stable array and the default elements are considered stable
	*/
	public boolean isDefaultStable() {
	return isDefaultStable;
	}

	/**
	* Gathers all the {@link ConstantNode}s that are inputs to the
	* {@linkplain StructuredGraph#getNodes() live nodes} in a given graph.
	*/
	public static NodeIterable<ConstantNode> getConstantNodes(StructuredGraph graph) {
	return graph.getNodes().filter(ConstantNode.class);
	}

	/**
	* Replaces this node at its usages with another node.
	*/
	public void replace(StructuredGraph graph, Node replacement) {
	assert graph == graph();
	replaceAtUsagesAndDelete(replacement);
	}

	@Override
	public void generate(NodeLIRBuilderTool gen) {
	LIRKind kind = gen.getLIRGeneratorTool().getLIRKind(stamp());
	if (onlyUsedInVirtualState()) {
	gen.setResult(this, new ConstantValue(kind, value));
	} else {
	gen.setResult(this, gen.getLIRGeneratorTool().emitConstant(kind, value));
	}
	}

	private boolean onlyUsedInVirtualState() {
	for (Node n : this.usages()) {
	if (n instanceof VirtualState) {
	// Only virtual usage.
	} else {
	return false;
	}
	}
	return true;
	}

	public static ConstantNode forConstant(JavaConstant constant, MetaAccessProvider metaAccess, StructuredGraph graph) {
	if (constant.getJavaKind().getStackKind() == JavaKind.Int && constant.getJavaKind() != JavaKind.Int) {
	return forInt(constant.asInt(), graph);
	}
	if (constant.getJavaKind() == JavaKind.Object) {
	return unique(graph, new ConstantNode(constant, StampFactory.forConstant(constant, metaAccess)));
	} else {
	return unique(graph, createPrimitive(constant));
	}
	}

	public static ConstantNode forConstant(JavaConstant constant, int stableDimension, boolean isDefaultStable, MetaAccessProvider metaAccess) {
	if (constant.getJavaKind().getStackKind() == JavaKind.Int && constant.getJavaKind() != JavaKind.Int) {
	return forInt(constant.asInt());
	}
	if (constant.getJavaKind() == JavaKind.Object) {
	return new ConstantNode(constant, StampFactory.forConstant(constant, metaAccess), stableDimension, isDefaultStable);
	} else {
	assert stableDimension == 0;
	return createPrimitive(constant);
	}
	}

	public static ConstantNode forConstant(JavaConstant array, MetaAccessProvider metaAccess) {
	return forConstant(array, 0, false, metaAccess);
	}

	public static ConstantNode forConstant(Stamp stamp, Constant constant, MetaAccessProvider metaAccess, StructuredGraph graph) {
	return graph.unique(new ConstantNode(constant, stamp.constant(constant, metaAccess)));
	}

	public static ConstantNode forConstant(Stamp stamp, Constant constant, int stableDimension, boolean isDefaultStable, MetaAccessProvider metaAccess) {
	return new ConstantNode(constant, stamp.constant(constant, metaAccess), stableDimension, isDefaultStable);
	}

	public static ConstantNode forConstant(Stamp stamp, Constant constant, MetaAccessProvider metaAccess) {
	return new ConstantNode(constant, stamp.constant(constant, metaAccess));
	}

	/**
	* Returns a node for a Java primitive.
	*/
	public static ConstantNode forPrimitive(JavaConstant constant, StructuredGraph graph) {
	assert constant.getJavaKind() != JavaKind.Object;
	return forConstant(constant, null, graph);
	}

	/**
	* Returns a node for a Java primitive.
	*/
	public static ConstantNode forPrimitive(JavaConstant constant) {
	assert constant.getJavaKind() != JavaKind.Object;
	return forConstant(constant, null);
	}

	/**
	* Returns a node for a primitive of a given type.
	*/
	public static ConstantNode forPrimitive(Stamp stamp, JavaConstant constant, StructuredGraph graph) {
	if (stamp instanceof IntegerStamp) {
	assert constant.getJavaKind().isNumericInteger() && stamp.getStackKind() == constant.getJavaKind().getStackKind();
	IntegerStamp istamp = (IntegerStamp) stamp;
	return forIntegerBits(istamp.getBits(), constant, graph);
	} else {
	assert constant.getJavaKind().isNumericFloat() && stamp.getStackKind() == constant.getJavaKind();
	return forPrimitive(constant, graph);
	}
	}

	/**
	* Returns a node for a primitive of a given type.
	*/
	public static ConstantNode forPrimitive(Stamp stamp, Constant constant) {
	if (stamp instanceof IntegerStamp) {
	PrimitiveConstant primitive = (PrimitiveConstant) constant;
	assert primitive.getJavaKind().isNumericInteger() && stamp.getStackKind() == primitive.getJavaKind().getStackKind();
	IntegerStamp istamp = (IntegerStamp) stamp;
	return forIntegerBits(istamp.getBits(), primitive);
	} else if (stamp instanceof FloatStamp) {
	PrimitiveConstant primitive = (PrimitiveConstant) constant;
	assert primitive.getJavaKind().isNumericFloat() && stamp.getStackKind() == primitive.getJavaKind();
	return forConstant(primitive, null);
	} else {
	assert !(stamp instanceof AbstractObjectStamp);
	return new ConstantNode(constant, stamp.constant(constant, null));
	}
	}

	/**
	* Returns a node for a double constant.
	*
	* @param d the double value for which to create the instruction
	* @return a node for a double constant
	*/
	public static ConstantNode forDouble(double d, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forDouble(d)));
	}

	/**
	* Returns a node for a double constant.
	*
	* @param d the double value for which to create the instruction
	* @return a node for a double constant
	*/
	public static ConstantNode forDouble(double d) {
	return createPrimitive(JavaConstant.forDouble(d));
	}

	/**
	* Returns a node for a float constant.
	*
	* @param f the float value for which to create the instruction
	* @return a node for a float constant
	*/
	public static ConstantNode forFloat(float f, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forFloat(f)));
	}

	/**
	* Returns a node for a float constant.
	*
	* @param f the float value for which to create the instruction
	* @return a node for a float constant
	*/
	public static ConstantNode forFloat(float f) {
	return createPrimitive(JavaConstant.forFloat(f));
	}

	/**
	* Returns a node for an long constant.
	*
	* @param i the long value for which to create the instruction
	* @return a node for an long constant
	*/
	public static ConstantNode forLong(long i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forLong(i)));
	}

	/**
	* Returns a node for an long constant.
	*
	* @param i the long value for which to create the instruction
	* @return a node for an long constant
	*/
	public static ConstantNode forLong(long i) {
	return createPrimitive(JavaConstant.forLong(i));
	}

	/**
	* Returns a node for an integer constant.
	*
	* @param i the integer value for which to create the instruction
	* @return a node for an integer constant
	*/
	public static ConstantNode forInt(int i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forInt(i)));
	}

	/**
	* Returns a node for an integer constant.
	*
	* @param i the integer value for which to create the instruction
	* @return a node for an integer constant
	*/
	public static ConstantNode forInt(int i) {
	return createPrimitive(JavaConstant.forInt(i));
	}

	/**
	* Returns a node for a boolean constant.
	*
	* @param i the boolean value for which to create the instruction
	* @return a node representing the boolean
	*/
	public static ConstantNode forBoolean(boolean i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forInt(i ? 1 : 0)));
	}

	/**
	* Returns a node for a boolean constant.
	*
	* @param i the boolean value for which to create the instruction
	* @return a node representing the boolean
	*/
	public static ConstantNode forBoolean(boolean i) {
	return createPrimitive(JavaConstant.forInt(i ? 1 : 0));
	}

	/**
	* Returns a node for a byte constant.
	*
	* @param i the byte value for which to create the instruction
	* @return a node representing the byte
	*/
	public static ConstantNode forByte(byte i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forInt(i)));
	}

	/**
	* Returns a node for a char constant.
	*
	* @param i the char value for which to create the instruction
	* @return a node representing the char
	*/
	public static ConstantNode forChar(char i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forInt(i)));
	}

	/**
	* Returns a node for a short constant.
	*
	* @param i the short value for which to create the instruction
	* @return a node representing the short
	*/
	public static ConstantNode forShort(short i, StructuredGraph graph) {
	return unique(graph, createPrimitive(JavaConstant.forInt(i)));
	}

	private static ConstantNode unique(StructuredGraph graph, ConstantNode node) {
	return graph.unique(node);
	}

	private static ConstantNode forIntegerBits(int bits, JavaConstant constant, StructuredGraph graph) {
	long value = constant.asLong();
	long bounds = CodeUtil.signExtend(value, bits);
	return unique(graph, new ConstantNode(constant, StampFactory.forInteger(bits, bounds, bounds)));
	}

	/**
	* Returns a node for a constant integer that's not directly representable as Java primitive
	* (e.g. short).
	*/
	public static ConstantNode forIntegerBits(int bits, long value, StructuredGraph graph) {
	return forIntegerBits(bits, JavaConstant.forPrimitiveInt(bits, value), graph);
	}

	private static ConstantNode forIntegerBits(int bits, JavaConstant constant) {
	long value = constant.asLong();
	long bounds = CodeUtil.signExtend(value, bits);
	return new ConstantNode(constant, StampFactory.forInteger(bits, bounds, bounds));
	}

	/**
	* Returns a node for a constant integer that's not directly representable as Java primitive
	* (e.g. short).
	*/
	public static ConstantNode forIntegerBits(int bits, long value) {
	return forIntegerBits(bits, JavaConstant.forPrimitiveInt(bits, value));
	}

	/**
	* Returns a node for a constant integer that's compatible to a given stamp.
	*/
	public static ConstantNode forIntegerStamp(Stamp stamp, long value, StructuredGraph graph) {
	if (stamp instanceof IntegerStamp) {
	IntegerStamp intStamp = (IntegerStamp) stamp;
	return forIntegerBits(intStamp.getBits(), value, graph);
	} else {
	return forIntegerKind(stamp.getStackKind(), value, graph);
	}
	}

	/**
	* Returns a node for a constant integer that's compatible to a given stamp.
	*/
	public static ConstantNode forIntegerStamp(Stamp stamp, long value) {
	if (stamp instanceof IntegerStamp) {
	IntegerStamp intStamp = (IntegerStamp) stamp;
	return forIntegerBits(intStamp.getBits(), value);
	} else {
	return forIntegerKind(stamp.getStackKind(), value);
	}
	}

	public static ConstantNode forIntegerKind(JavaKind kind, long value, StructuredGraph graph) {
	switch (kind) {
	case Byte:
	case Short:
	case Int:
	return ConstantNode.forInt((int) value, graph);
	case Long:
	return ConstantNode.forLong(value, graph);
	default:
	throw GraalError.shouldNotReachHere("unknown kind " + kind);
	}
	}

	public static ConstantNode forIntegerKind(JavaKind kind, long value) {
	switch (kind) {
	case Byte:
	case Short:
	case Int:
	return createPrimitive(JavaConstant.forInt((int) value));
	case Long:
	return createPrimitive(JavaConstant.forLong(value));
	default:
	throw GraalError.shouldNotReachHere("unknown kind " + kind);
	}
	}

	public static ConstantNode forFloatingKind(JavaKind kind, double value, StructuredGraph graph) {
	switch (kind) {
	case Float:
	return ConstantNode.forFloat((float) value, graph);
	case Double:
	return ConstantNode.forDouble(value, graph);
	default:
	throw GraalError.shouldNotReachHere("unknown kind " + kind);
	}
	}

	public static ConstantNode forFloatingKind(JavaKind kind, double value) {
	switch (kind) {
	case Float:
	return ConstantNode.forFloat((float) value);
	case Double:
	return ConstantNode.forDouble(value);
	default:
	throw GraalError.shouldNotReachHere("unknown kind " + kind);
	}
	}

	/**
	* Returns a node for a constant double that's compatible to a given stamp.
	*/
	public static ConstantNode forFloatingStamp(Stamp stamp, double value, StructuredGraph graph) {
	return forFloatingKind(stamp.getStackKind(), value, graph);
	}

	/**
	* Returns a node for a constant double that's compatible to a given stamp.
	*/
	public static ConstantNode forFloatingStamp(Stamp stamp, double value) {
	return forFloatingKind(stamp.getStackKind(), value);
	}

	public static ConstantNode defaultForKind(JavaKind kind, StructuredGraph graph) {
	return unique(graph, defaultForKind(kind));
	}

	public static ConstantNode defaultForKind(JavaKind kind) {
	switch (kind) {
	case Boolean:
	case Byte:
	case Char:
	case Short:
	case Int:
	return ConstantNode.forInt(0);
	case Double:
	return ConstantNode.forDouble(0.0);
	case Float:
	return ConstantNode.forFloat(0.0f);
	case Long:
	return ConstantNode.forLong(0L);
	case Object:
	return ConstantNode.forConstant(JavaConstant.NULL_POINTER, null);
	default:
	return null;
	}
	}

	@Override
	public Map<Object, Object> getDebugProperties(Map<Object, Object> map) {
	Map<Object, Object> properties = super.getDebugProperties(map);
	properties.put("rawvalue", value.toValueString());
	return properties;
	}

	@Override
	public String toString(Verbosity verbosity) {
	if (verbosity == Verbosity.Name) {
	return super.toString(Verbosity.Name) + "(" + value.toValueString() + ")";
	} else {
	return super.toString(verbosity);
	}
	}
	}