org.graalvm.compiler.nodes.extended

Class RawLoadNode

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

org.graalvm.compiler.nodes.extended.RawLoadNode

All Implemented Interfaces:

Cloneable, Formattable, MemoryKillMarker, CanonicalizableMarker, FixedNodeInterface, FixedWithNextNodeInterface, MemoryAccess, MemoryKill, OrderedMemoryAccess, SingleMemoryKill, Canonicalizable, Lowerable, Virtualizable, ValueNodeInterface

Direct Known Subclasses:

GuardedUnsafeLoadNode, RawOrderedLoadNode

public class RawLoadNode
extends UnsafeAccessNode
implements Lowerable, Virtualizable, Canonicalizable, SingleMemoryKill

Load of a value from a location specified as an offset relative to an object. No null check is performed before the load.

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>

Nested classes/interfaces inherited from interface org.graalvm.compiler.nodes.memory.MemoryKill

MemoryKill.NoLocation

Field Summary

Fields

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

Fields inherited from class org.graalvm.compiler.nodes.extended.UnsafeAccessNode

accessKind, forceLocation, locationIdentity

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

Fields inherited from interface org.graalvm.compiler.nodes.memory.MemoryKill

MULTI_KILL_NO_LOCATION, NO_LOCATION

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RawLoadNode(NodeClass<? extends RawLoadNode> c, ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity)
protected	RawLoadNode(NodeClass<? extends RawLoadNode> c, ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity, boolean forceLocation)
protected	RawLoadNode(NodeClass<? extends RawLoadNode> c, ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity, boolean forceLocation, MemoryOrderMode memoryOrder)
protected	RawLoadNode(NodeClass<? extends RawLoadNode> c, ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity, MemoryOrderMode memoryOrder)
	RawLoadNode(Stamp stamp, ValueNode object, ValueNode offset, org.graalvm.word.LocationIdentity locationIdentity, JavaKind accessKind) This constructor exists for node intrinsics that need a stamp based on the return type of the Node.NodeIntrinsic annotated method.
	RawLoadNode(ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity) This constructor exists for node intrinsics that need a stamp based on accessKind.
	RawLoadNode(ValueNode object, ValueNode offset, JavaKind accessKind, org.graalvm.word.LocationIdentity locationIdentity, boolean forceLocation)

Method Summary

Modifier and Type	Method and Description
Node	canonical(CanonicalizerTool tool) Implementations of this method can provide local optimizations like constant folding and strength reduction.
protected ValueNode	cloneAsArrayAccess(ValueNode location, org.graalvm.word.LocationIdentity identity, MemoryOrderMode memOrder)
protected ValueNode	cloneAsFieldAccess(Assumptions assumptions, ResolvedJavaField field, MemoryOrderMode memOrder)
org.graalvm.word.LocationIdentity	getKilledLocationIdentity() This method is used to determine which memory location is killed by this node.
boolean	inferStamp() This method can be overridden by subclasses of ValueNode if they need to recompute their stamp if their inputs change.
static Object	load(Object object, long offset, JavaKind kind, org.graalvm.word.LocationIdentity locationIdentity)
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 org.graalvm.compiler.nodes.extended.UnsafeAccessNode

accessKind, getLocationIdentity, getMemoryOrder, isCanonicalizable, isLocationForced, object, 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, 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.spi.Lowerable

lower

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

asMultiMemoryKill, asSingleMemoryKill, isMemoryKill, isMultiMemoryKill, isSingleMemoryKill

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

asNode

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.FixedNodeInterface

asFixedNode

Field Detail

TYPE

public static final NodeClass<RawLoadNode> TYPE

Constructor Detail

RawLoadNode

public RawLoadNode(ValueNode object,
                   ValueNode offset,
                   JavaKind accessKind,
                   org.graalvm.word.LocationIdentity locationIdentity)

This constructor exists for node intrinsics that need a stamp based on accessKind.

RawLoadNode

public RawLoadNode(ValueNode object,
                   ValueNode offset,
                   JavaKind accessKind,
                   org.graalvm.word.LocationIdentity locationIdentity,
                   boolean forceLocation)

RawLoadNode

public RawLoadNode(Stamp stamp,
                   ValueNode object,
                   ValueNode offset,
                   org.graalvm.word.LocationIdentity locationIdentity,
                   JavaKind accessKind)

This constructor exists for node intrinsics that need a stamp based on the return type of the Node.NodeIntrinsic annotated method.

RawLoadNode

protected RawLoadNode(NodeClass<? extends RawLoadNode> c,
                      ValueNode object,
                      ValueNode offset,
                      JavaKind accessKind,
                      org.graalvm.word.LocationIdentity locationIdentity)

RawLoadNode

protected RawLoadNode(NodeClass<? extends RawLoadNode> c,
                      ValueNode object,
                      ValueNode offset,
                      JavaKind accessKind,
                      org.graalvm.word.LocationIdentity locationIdentity,
                      boolean forceLocation)

RawLoadNode

protected RawLoadNode(NodeClass<? extends RawLoadNode> c,
                      ValueNode object,
                      ValueNode offset,
                      JavaKind accessKind,
                      org.graalvm.word.LocationIdentity locationIdentity,
                      MemoryOrderMode memoryOrder)

RawLoadNode

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

Method Detail

getKilledLocationIdentity

public org.graalvm.word.LocationIdentity getKilledLocationIdentity()

Description copied from interface: SingleMemoryKill

This method is used to determine which memory location is killed by this node. Returning the special value LocationIdentity.any() will kill all memory locations.

Specified by:

getKilledLocationIdentity in interface SingleMemoryKill

Returns:

the identity of the location killed by this node.

inferStamp

public boolean inferStamp()

Description copied from class: ValueNode

This method can be overridden by subclasses of ValueNode if they need to recompute their stamp if their inputs change. A typical implementation will compute the stamp and pass it to ValueNode.updateStamp(Stamp), whose return value can be used as the result of this method.

Overrides:

inferStamp in class ValueNode

Returns:

true if the stamp has changed, false otherwise.

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

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

Overrides:

canonical in class UnsafeAccessNode

Parameters:

tool - provides access to runtime interfaces like MetaAccessProvider

cloneAsFieldAccess

protected ValueNode cloneAsFieldAccess(Assumptions assumptions,
                                       ResolvedJavaField field,
                                       MemoryOrderMode memOrder)

Specified by:

cloneAsFieldAccess in class UnsafeAccessNode

cloneAsArrayAccess

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

Specified by:

cloneAsArrayAccess in class UnsafeAccessNode

load

public static Object load(Object object,
                          long offset,
                          JavaKind kind,
                          org.graalvm.word.LocationIdentity locationIdentity)