org.graalvm.compiler.nodes.extended

Class UnsafeAccessNode

java.lang.Object

org.graalvm.compiler.graph.Node

org.graalvm.compiler.nodes.ValueNode

org.graalvm.compiler.nodes.FixedNode

org.graalvm.compiler.nodes.FixedWithNextNode

org.graalvm.compiler.nodes.extended.UnsafeAccessNode

All Implemented Interfaces:

Cloneable, Formattable, CanonicalizableMarker, FixedNodeInterface, FixedWithNextNodeInterface, MemoryAccess, OrderedMemoryAccess, Canonicalizable, ValueNodeInterface

Direct Known Subclasses:

RawLoadNode, RawStoreNode

public abstract class UnsafeAccessNode
extends FixedWithNextNode
implements Canonicalizable, OrderedMemoryAccess, MemoryAccess

Nested Class Summary

Nested classes/interfaces inherited from class org.graalvm.compiler.graph.Node

Node.ConstantNodeParameter, Node.EdgeVisitor, Node.IndirectCanonicalization, Node.InjectedNodeParameter, Node.Input, Node.NodeInsertionStackTrace, Node.NodeIntrinsic, Node.NodeIntrinsicFactory, Node.OptionalInput, Node.Successor, Node.ValueNumberable

Nested classes/interfaces inherited from interface org.graalvm.compiler.nodes.spi.Canonicalizable

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

Field Summary

Fields

Modifier and Type	Field and Description
protected JavaKind	accessKind
protected boolean	forceLocation Whether the location identity of this node must not change.
protected org.graalvm.word.LocationIdentity	locationIdentity
static NodeClass<UnsafeAccessNode>	TYPE

Fields inherited from class org.graalvm.compiler.nodes.FixedWithNextNode

next

Fields inherited from class org.graalvm.compiler.nodes.ValueNode

EMPTY_ARRAY, stamp

Fields inherited from class org.graalvm.compiler.graph.Node

NODE_LIST, NOT_ITERABLE, TRACK_CREATION_POSITION, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	UnsafeAccessNode(NodeClass<? extends UnsafeAccessNode> c, Stamp stamp, ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity, boolean forceLocation, MemoryOrderMode memoryOrder)

Method Summary

Modifier and Type	Method and Description
JavaKind	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, org.graalvm.word.LocationIdentity identity, MemoryOrderMode memOrder)
protected abstract ValueNode	cloneAsFieldAccess(Assumptions assumptions, ResolvedJavaField field, MemoryOrderMode memOrder)
org.graalvm.word.LocationIdentity	getLocationIdentity()
MemoryOrderMode	getMemoryOrder() Retrieves the node's required memory ordering.
boolean	isCanonicalizable()
boolean	isLocationForced()
ValueNode	object()
ValueNode	offset()

Methods inherited from class org.graalvm.compiler.nodes.FixedWithNextNode

asFixedWithNextNode, next, setNext

Methods inherited from class org.graalvm.compiler.nodes.FixedNode

asFixedNode, verify

Methods inherited from class org.graalvm.compiler.nodes.ValueNode

asConstant, asJavaConstant, asNode, asSerializableConstant, checkReplaceAtUsagesInvariants, getStackKind, graph, hasUsagesOtherThan, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isDefaultConstant, isIllegalConstant, isJavaConstant, isNullConstant, isSerializableConstant, recursivelyDataFlowEqualsUpTo, setStamp, stamp, updateStamp, updateUsagesInterface

Methods inherited from class org.graalvm.compiler.graph.Node

afterClone, applyInputs, applySuccessors, assertFalse, assertTrue, cfgPredecessors, cfgSuccessors, clearInputs, clearNodeSourcePosition, clearSuccessors, copyWithInputs, copyWithInputs, dataFlowEquals, dynamicNodeSizeEstimate, estimatedNodeCycles, estimatedNodeSize, fail, formatTo, getCreationPosition, getDebug, getDebugProperties, getDebugProperties, getInsertionPosition, getNodeClass, getNodeSourcePosition, getOptions, getUsageCount, hasExactlyOneUsage, hashCode, hasMoreThanOneUsage, hasNoUsages, hasOnlyUsagesOfType, hasUsages, hasUsagesOfType, inputPositions, inputs, isAlive, isDeleted, isUnregistered, markDeleted, maybeNotifyZeroUsages, modCount, predecessor, pushInputs, removeUsage, replaceAllInputs, replaceAndDelete, replaceAtAllUsages, replaceAtMatchingUsages, replaceAtPredecessor, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceAtUsagesAndDelete, replaceAtUsagesAndDelete, replaceFirstInput, replaceFirstSuccessor, safeDelete, setCreationPosition, setInsertionPosition, setNodeSourcePosition, singleUsage, successorPositions, successors, toString, toString, updateNodeSourcePosition, updatePredecessor, updateUsages, usages, valueEquals, verifyEdges, verifyInputs, verifySourcePosition, withNodeSourcePosition

Methods inherited from class java.lang.Object

clone, equals, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.graalvm.compiler.nodes.memory.OrderedMemoryAccess

ordersMemoryAccesses

Methods inherited from interface org.graalvm.compiler.nodes.memory.MemoryAccess

getLastLocationAccess, setLastLocationAccess

Methods inherited from interface org.graalvm.compiler.nodes.ValueNodeInterface

asNode

Methods inherited from interface org.graalvm.compiler.nodes.FixedNodeInterface

asFixedNode

Field Detail

TYPE

public static final NodeClass<UnsafeAccessNode> TYPE

accessKind

protected final JavaKind accessKind

locationIdentity

protected final org.graalvm.word.LocationIdentity locationIdentity

forceLocation

protected final boolean forceLocation

Whether the location identity of this node must not change.

Constructor Detail

UnsafeAccessNode

protected UnsafeAccessNode(NodeClass<? extends UnsafeAccessNode> c,
                           Stamp stamp,
                           ValueNode object,
                           ValueNode offset,
                           JavaKind accessKind,
                           org.graalvm.word.LocationIdentity locationIdentity,
                           boolean forceLocation,
                           MemoryOrderMode memoryOrder)

Method Detail

getLocationIdentity

public org.graalvm.word.LocationIdentity getLocationIdentity()

Specified by:

getLocationIdentity in interface MemoryAccess

isLocationForced

public boolean isLocationForced()

isCanonicalizable

public boolean isCanonicalizable()

object

public ValueNode object()

offset

public ValueNode offset()

accessKind

public JavaKind accessKind()

getMemoryOrder

public MemoryOrderMode getMemoryOrder()

Description copied from interface: OrderedMemoryAccess

Retrieves the node's required memory ordering.

Specified by:

getMemoryOrder in interface OrderedMemoryAccess

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(Assumptions assumptions,
                                                ResolvedJavaField field,
                                                MemoryOrderMode memOrder)

cloneAsArrayAccess

protected abstract ValueNode cloneAsArrayAccess(ValueNode location,
                                                org.graalvm.word.LocationIdentity identity,
                                                MemoryOrderMode memOrder)