com.oracle.graal.nodes.extended

Class UnsafeAccessNode

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.extended.UnsafeAccessNode

All Implemented Interfaces:

Canonicalizable, Cloneable, Formattable, KindProvider

Direct Known Subclasses:

UnsafeLoadNode, UnsafeStoreNode

public abstract class UnsafeAccessNode
extends FixedWithNextNode
implements Canonicalizable

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
protected Kind	accessKind
protected LocationIdentity	locationIdentity
(package private) ValueNode	object
(package private) ValueNode	offset
static NodeClass<UnsafeAccessNode>	TYPE

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

Modifier	Constructor and Description
protected	UnsafeAccessNode(NodeClass<? extends UnsafeAccessNode> c, Stamp stamp, ValueNode object, ValueNode offset, Kind accessKind, LocationIdentity locationIdentity)

Method Summary

Modifier and Type	Method and Description
Kind	accessKind()
Node	canonical(CanonicalizerTool tool) Implementations of this method can provide local optimizations like constant folding and strength reduction.
protected abstract ValueNode	cloneAsArrayAccess(ValueNode location, LocationIdentity identity)
protected abstract ValueNode	cloneAsFieldAccess(ResolvedJavaField field)
LocationIdentity	getLocationIdentity()
ValueNode	object()
ValueNode	offset()

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

asNode, next, setNext

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

verify

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, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final NodeClass<UnsafeAccessNode> TYPE

object

ValueNode object

offset

ValueNode offset

accessKind

protected final Kind accessKind

locationIdentity

protected final LocationIdentity locationIdentity

Constructor Detail

UnsafeAccessNode

protected UnsafeAccessNode(NodeClass<? extends UnsafeAccessNode> c,
                           Stamp stamp,
                           ValueNode object,
                           ValueNode offset,
                           Kind accessKind,
                           LocationIdentity locationIdentity)

Method Detail

getLocationIdentity

public LocationIdentity getLocationIdentity()

object

public ValueNode object()

offset

public ValueNode offset()

accessKind

public Kind accessKind()

canonical

public Node 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

cloneAsFieldAccess

protected abstract ValueNode cloneAsFieldAccess(ResolvedJavaField field)

cloneAsArrayAccess

protected abstract ValueNode cloneAsArrayAccess(ValueNode location,
                                                LocationIdentity identity)