com.oracle.graal.nodes.java

Class LoadFieldNode

java.lang.Object

com.oracle.graal.graph.Node

com.oracle.graal.nodes.ValueNode

com.oracle.graal.nodes.FixedNode

com.oracle.graal.nodes.FixedWithNextNode

com.oracle.graal.nodes.java.AccessFieldNode

com.oracle.graal.nodes.java.LoadFieldNode

All Implemented Interfaces:

NodeInterface, Canonicalizable, Canonicalizable.Unary<ValueNode>, Lowerable, UncheckedInterfaceProvider, Virtualizable, Cloneable, Formattable, KindProvider

public final class LoadFieldNode
extends AccessFieldNode
implements Canonicalizable.Unary<ValueNode>, Virtualizable, UncheckedInterfaceProvider

The LoadFieldNode represents a read of a static or instance field.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.graph.Node

Node.ConstantNodeParameter, Node.InjectedNodeParameter, Node.Input, Node.NodeIntrinsic, Node.OptionalInput, Node.Successor, Node.ValueNumberable

Nested classes/interfaces inherited from interface com.oracle.graal.graph.spi.Canonicalizable

Canonicalizable.Binary<T extends Node>, Canonicalizable.BinaryCommutative<T extends Node>, Canonicalizable.Unary<T extends Node>

Field Summary

Fields

Modifier and Type	Field and Description
static NodeClass<LoadFieldNode>	TYPE

Fields inherited from class com.oracle.graal.nodes.java.AccessFieldNode

field, object

Fields inherited from class com.oracle.graal.nodes.FixedWithNextNode

next

Fields inherited from class com.oracle.graal.nodes.ValueNode

stamp

Fields inherited from class com.oracle.graal.graph.Node

NODE_LIST, NOT_ITERABLE, USE_UNSAFE_TO_CLONE, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges

Constructor Summary

Constructors

Constructor and Description
LoadFieldNode(ValueNode object, ResolvedJavaField field)

Method Summary

Modifier and Type	Method and Description
ConstantNode	asConstant(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, ValueNode forObject) Gets a constant value for this load if possible.
private PhiNode	asPhi(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, ValueNode forObject)
ValueNode	canonical(CanonicalizerTool tool, ValueNode forObject) Similar to Canonicalizable.canonical(CanonicalizerTool), except that implementations should act as if the current input of the node was the given one, i.e., they should never look at the inputs via the this pointer.
private static Stamp	createStamp(ResolvedJavaField field)
ValueNode	getValue() Gets the current value of the input, so that calling Canonicalizable.Unary.canonical(CanonicalizerTool, Node) with the value returned from this method should behave exactly like Canonicalizable.canonical(CanonicalizerTool).
Stamp	uncheckedStamp() Returns a stamp containing information about interface types that has not been verified or null if no such stamp is available.
void	virtualize(VirtualizerTool tool) A node class can implement this method to convey information about what its effect would be if some of its inputs were virtualized.

Methods inherited from class com.oracle.graal.nodes.java.AccessFieldNode

field, isStatic, isVolatile, lower, object, toString, verify

Methods inherited from class com.oracle.graal.nodes.FixedWithNextNode

asNode, next, setNext

Methods inherited from class com.oracle.graal.nodes.ValueNode

asConstant, asJavaConstant, getKind, graph, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isNullConstant, setStamp, stamp, updateStamp

Methods inherited from class com.oracle.graal.graph.Node

acceptInputs, acceptSuccessors, afterClone, assertFalse, assertTrue, cfgPredecessors, cfgSuccessors, clearInputs, clearSuccessors, copyWithInputs, copyWithInputs, equals, fail, formatTo, getDebugProperties, getDebugProperties, getId, getNodeClass, getUsageAt, getUsageCount, hashCode, hasNoUsages, hasUsages, inputs, isAlive, isDeleted, markDeleted, modCount, newIdentityMap, newIdentityMap, newIdentityMap, newMap, newMap, newMap, newSet, newSet, predecessor, pushInputs, removeUsage, replaceAndDelete, replaceAtMatchingUsages, replaceAtPredecessor, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceFirstInput, replaceFirstSuccessor, safeDelete, simplify, successors, toString, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.oracle.graal.graph.spi.Canonicalizable.Unary

canonical

Methods inherited from interface com.oracle.graal.nodes.spi.UncheckedInterfaceProvider

uncheckedOrNull

Methods inherited from interface com.oracle.graal.nodes.spi.Lowerable

asNode

Field Detail

TYPE

public static final NodeClass<LoadFieldNode> TYPE

Constructor Detail

LoadFieldNode

public LoadFieldNode(ValueNode object,
                     ResolvedJavaField field)

Method Detail

getValue

public ValueNode getValue()

Description copied from interface: Canonicalizable.Unary

Gets the current value of the input, so that calling Canonicalizable.Unary.canonical(CanonicalizerTool, Node) with the value returned from this method should behave exactly like Canonicalizable.canonical(CanonicalizerTool).

Specified by:

getValue in interface Canonicalizable.Unary<ValueNode>

createStamp

private static Stamp createStamp(ResolvedJavaField field)

canonical

public ValueNode canonical(CanonicalizerTool tool,
                           ValueNode forObject)

Description copied from interface: Canonicalizable.Unary

Similar to Canonicalizable.canonical(CanonicalizerTool), except that implementations should act as if the current input of the node was the given one, i.e., they should never look at the inputs via the this pointer.

Specified by:

canonical in interface Canonicalizable.Unary<ValueNode>

asConstant

public ConstantNode asConstant(MetaAccessProvider metaAccess,
                               ConstantReflectionProvider constantReflection,
                               ValueNode forObject)

Gets a constant value for this load if possible.

asPhi

private PhiNode asPhi(MetaAccessProvider metaAccess,
                      ConstantReflectionProvider constantReflection,
                      ValueNode forObject)

virtualize

public void virtualize(VirtualizerTool tool)

Description copied from interface: Virtualizable

A node class can implement this method to convey information about what its effect would be if some of its inputs were virtualized. All modifications must be made through the supplied tool, and not directly on the node, because by the time this method is called the virtualized/non-virtualized state is still speculative and might not hold because of loops, etc.

Specified by:

virtualize in interface Virtualizable

Parameters:

tool - the tool used to describe the effects of this node

uncheckedStamp

public Stamp uncheckedStamp()

Description copied from interface: UncheckedInterfaceProvider

Returns a stamp containing information about interface types that has not been verified or null if no such stamp is available. A type check is needed before using informations from this stamp.

Specified by:

uncheckedStamp in interface UncheckedInterfaceProvider