org.graalvm.compiler.hotspot.replacements.arraycopy

Class CheckcastArrayCopyCallNode

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.AbstractStateSplit

org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint

org.graalvm.compiler.hotspot.replacements.arraycopy.CheckcastArrayCopyCallNode

All Implemented Interfaces:

Cloneable, Formattable, MemoryKillMarker, FixedNodeInterface, FixedWithNextNodeInterface, MemoryKill, SingleMemoryKill, Lowerable, NodeWithState, StateSplit, ValueNodeInterface

public final class CheckcastArrayCopyCallNode
extends AbstractMemoryCheckpoint
implements Lowerable, SingleMemoryKill

Implements System.arraycopy(java.lang.Object, int, java.lang.Object, int, int) via a stub call that performs a fast CHECKCAST check. The target of the call is queried via HotSpotHostForeignCallsProvider.lookupCheckcastArraycopyDescriptor(boolean). Instead of throwing an ArrayStoreException, the stub is expected to return the number of copied elements xor'd with -1. Users of this node are responsible for converting that into the expected exception. A return value of 0 indicates that the operation was successful.

See Also:

A generic {@link System#arraycopy} stub call node., A {@link System#arraycopy} stub call node that calls specialzied stubs based element type and memory properties.

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.memory.MemoryKill

MemoryKill.NoLocation

Field Summary

Fields

Modifier and Type	Field and Description
static NodeClass<CheckcastArrayCopyCallNode>	TYPE
protected boolean	uninit

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

stateAfter

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	CheckcastArrayCopyCallNode(ArrayCopyForeignCalls foreignCalls, WordTypes wordTypes, ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode superCheckOffset, ValueNode destElemKlass, boolean uninit)

Method Summary

Modifier and Type	Method and Description
static int	checkcastArraycopy(Object src, int srcPos, Object dest, int destPos, int length, Word superCheckOffset, Object destElemKlass, boolean uninit)
ValueNode	getDestination()
ValueNode	getDestinationPosition()
org.graalvm.word.LocationIdentity	getKilledLocationIdentity() This method is used to determine which memory location is killed by this node.
ValueNode	getLength()
ValueNode	getSource()
ValueNode	getSourcePosition()
boolean	isUninit()
void	lower(LoweringTool tool) Expand this node into lower level nodes expressing the same semantics.

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

hasSideEffect, setStateAfter, stateAfter, verify

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

asFixedWithNextNode, next, setNext

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

asFixedNode

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.MemoryKill

asMultiMemoryKill, asSingleMemoryKill, isMemoryKill, isMultiMemoryKill, isSingleMemoryKill

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

asNode

Methods inherited from interface org.graalvm.compiler.nodes.spi.NodeWithState

states

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

asFixedNode

Field Detail

TYPE

public static final NodeClass<CheckcastArrayCopyCallNode> TYPE

uninit

protected final boolean uninit

Constructor Detail

CheckcastArrayCopyCallNode

protected CheckcastArrayCopyCallNode(ArrayCopyForeignCalls foreignCalls,
                                     WordTypes wordTypes,
                                     ValueNode src,
                                     ValueNode srcPos,
                                     ValueNode dest,
                                     ValueNode destPos,
                                     ValueNode length,
                                     ValueNode superCheckOffset,
                                     ValueNode destElemKlass,
                                     boolean uninit)

Method Detail

getSource

public ValueNode getSource()

getSourcePosition

public ValueNode getSourcePosition()

getDestination

public ValueNode getDestination()

getDestinationPosition

public ValueNode getDestinationPosition()

getLength

public ValueNode getLength()

isUninit

public boolean isUninit()

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

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.

checkcastArraycopy

public static int checkcastArraycopy(Object src,
                                     int srcPos,
                                     Object dest,
                                     int destPos,
                                     int length,
                                     Word superCheckOffset,
                                     Object destElemKlass,
                                     boolean uninit)