org.graalvm.compiler.nodes

Class LoopEndNode

java.lang.Object

org.graalvm.compiler.graph.Node

org.graalvm.compiler.nodes.ValueNode

org.graalvm.compiler.nodes.FixedNode

org.graalvm.compiler.nodes.AbstractEndNode

org.graalvm.compiler.nodes.LoopEndNode

All Implemented Interfaces:

Cloneable, Formattable, FixedNodeInterface, LIRLowerable, ValueNodeInterface

public final class LoopEndNode
extends AbstractEndNode

LoopEnd nodes represent a loop back-edge. When a LoopEnd is reached, execution continues at the loop header.

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

Field Summary

Fields

Modifier and Type	Field and Description
protected int	endIndex
static NodeClass<LoopEndNode>	TYPE

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

Constructor and Description
LoopEndNode(LoopBeginNode begin)

Method Summary

Modifier and Type	Method and Description
boolean	canGuestSafepoint()
boolean	canSafepoint()
Iterable<? extends Node>	cfgSuccessors() Returns an iterator that will provide all control-flow successors of this.
void	disableGuestSafepoint()
void	disableSafepoint() Disables safepoints for only this loop end (in contrast to disabling it for the whole loop.
protected NodeSize	dynamicNodeSizeEstimate() Node subclasses should override this method if they need to specify a dynamically calculated NodeSize value.
NodeCycles	estimatedNodeCycles()
void	generate(NodeLIRBuilderTool gen)
LoopBeginNode	loopBegin()
AbstractMergeNode	merge()
void	setLoopBegin(LoopBeginNode x)
boolean	verify()

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, clearInputs, clearNodeSourcePosition, clearSuccessors, copyWithInputs, copyWithInputs, dataFlowEquals, estimatedNodeSize, fail, formatTo, getCreationPosition, getDebug, getDebugProperties, getDebugProperties, getInsertionPosition, getNodeClass, getNodeSourcePosition, getOptions, getUsageCount, hasExactlyOneUsage, hasExactlyOneUsageOfType, 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.ValueNodeInterface

asNode

Field Detail

TYPE

public static final NodeClass<LoopEndNode> TYPE

endIndex

protected int endIndex

Constructor Detail

LoopEndNode

public LoopEndNode(LoopBeginNode begin)

Method Detail

merge

public AbstractMergeNode merge()

Overrides:

merge in class AbstractEndNode

loopBegin

public LoopBeginNode loopBegin()

setLoopBegin

public void setLoopBegin(LoopBeginNode x)

disableSafepoint

public void disableSafepoint()

Disables safepoints for only this loop end (in contrast to disabling it for the whole loop.

disableGuestSafepoint

public void disableGuestSafepoint()

canGuestSafepoint

public boolean canGuestSafepoint()

canSafepoint

public boolean canSafepoint()

generate

public void generate(NodeLIRBuilderTool gen)

Specified by:

generate in interface LIRLowerable

Overrides:

generate in class AbstractEndNode

verify

public boolean verify()

Overrides:

verify in class AbstractEndNode

cfgSuccessors

public Iterable<? extends Node> cfgSuccessors()

Description copied from class: Node

Returns an iterator that will provide all control-flow successors of this. Normally this will be the contents of all fields annotated with Node.Successor, but some node classes (like EndNode) may return different nodes.

Overrides:

cfgSuccessors in class AbstractEndNode

estimatedNodeCycles

public NodeCycles estimatedNodeCycles()

Overrides:

estimatedNodeCycles in class Node

dynamicNodeSizeEstimate

protected NodeSize dynamicNodeSizeEstimate()

Description copied from class: Node

Node subclasses should override this method if they need to specify a dynamically calculated NodeSize value. If the node size is static please use NodeInfo.size(). NOTE: When overriding this method, make sure that *all* field reads are null checked (even if Java semantics seemingly make the value of the field non-null). This is necessary because node size estimates are needed even during graph decoding which, for some nodes, first reflectively creates a stub and then later, reflectively, populates its fields. This method could be invoked between these two points. For this reason, when overriding this method assume that all fields can and will be null.

Overrides:

dynamicNodeSizeEstimate in class Node

Returns:

The estimated node size for this node.