com.oracle.graal.nodes.extended

Class LoadHubNode

java.lang.Object

com.oracle.graal.graph.Node

com.oracle.graal.nodes.ValueNode

com.oracle.graal.nodes.calc.FloatingNode

com.oracle.graal.nodes.FloatingGuardedNode

com.oracle.graal.nodes.extended.LoadHubNode

All Implemented Interfaces:

Node.ValueNumberable, NodeInterface, Canonicalizable, GuardedNode, Lowerable, Virtualizable, Cloneable, Formattable, KindProvider

public final class LoadHubNode
extends FloatingGuardedNode
implements Lowerable, Canonicalizable, Virtualizable

Loads an object's hub. The object is not null-checked by this operation.

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<LoadHubNode>	TYPE
(package private) ValueNode	value

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

guard

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

Modifier	Constructor and Description
	LoadHubNode(StampProvider stampProvider, ValueNode value)
	LoadHubNode(StampProvider stampProvider, ValueNode value, ValueNode guard)
private	LoadHubNode(Stamp stamp, ValueNode value, ValueNode guard)

Method Summary

Modifier and Type	Method and Description
ValueNode	canonical(CanonicalizerTool tool) Implementations of this method can provide local optimizations like constant folding and strength reduction.
static ValueNode	create(ValueNode value, StampProvider stampProvider, MetaAccessProvider metaAccess)
static ValueNode	findSynonym(ValueNode curValue, Stamp stamp, StructuredGraph graph, MetaAccessProvider metaAccess)
static ResolvedJavaType	findSynonymType(StructuredGraph graph, MetaAccessProvider metaAccess, ValueNode curValue)
ValueNode	getValue()
private static Stamp	hubStamp(StampProvider stampProvider, ValueNode value)
void	lower(LoweringTool tool) Expand this node into lower level nodes expressing the same semantics.
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.FloatingGuardedNode

getGuard, setGuard

Methods inherited from class com.oracle.graal.nodes.calc.FloatingNode

asNode

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, toString, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verify, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

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

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

asNode

Methods inherited from interface com.oracle.graal.nodes.extended.GuardedNode

asNode

Field Detail

TYPE

public static final NodeClass<LoadHubNode> TYPE

value

ValueNode value

Constructor Detail

LoadHubNode

public LoadHubNode(StampProvider stampProvider,
                   ValueNode value)

LoadHubNode

public LoadHubNode(StampProvider stampProvider,
                   ValueNode value,
                   ValueNode guard)

LoadHubNode

private LoadHubNode(Stamp stamp,
                    ValueNode value,
                    ValueNode guard)

Method Detail

getValue

public ValueNode getValue()

hubStamp

private static Stamp hubStamp(StampProvider stampProvider,
                              ValueNode value)

create

public static ValueNode create(ValueNode value,
                               StampProvider stampProvider,
                               MetaAccessProvider metaAccess)

lower

public void lower(LoweringTool tool)

Description copied from interface: Lowerable

Expand this node into lower level nodes expressing the same semantics. If the introduced nodes are themselves lowerable, they should be recursively lowered as part of this call.

Specified by:

lower in interface Lowerable

canonical

public ValueNode canonical(CanonicalizerTool tool)

Description copied from interface: Canonicalizable

Implementations of this method can provide local optimizations like constant folding and strength reduction. Implementations should look at the properties and inputs of the current node and determine if there is a more optimal and always semantically correct replacement.
The return value determines the effect that the canonicalization will have:

• Returning an pre-existing node will replace the current node with the given one.
• Returning a newly created node (that was not yet added to the graph) will replace the current node with the given one, after adding it to the graph. If both the replacement and the replacee are anchored in control flow (fixed nodes), the replacement will be added to the control flow. It is invalid to replace a non-fixed node with a newly created fixed node (because its placement in the control flow cannot be determined without scheduling).
• Returning null will delete the current node and replace it with null at all usages. Note that it is not necessary to delete floating nodes that have no more usages this way - they will be deleted automatically.

Specified by:

canonical in interface Canonicalizable

Parameters:

tool - provides access to runtime interfaces like MetaAccessProvider

findSynonym

public static ValueNode findSynonym(ValueNode curValue,
                                    Stamp stamp,
                                    StructuredGraph graph,
                                    MetaAccessProvider metaAccess)

findSynonymType

public static ResolvedJavaType findSynonymType(StructuredGraph graph,
                                               MetaAccessProvider metaAccess,
                                               ValueNode curValue)

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