com.oracle.graal.nodes

Class AbstractMergeNode

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.AbstractBeginNode

com.oracle.graal.nodes.BeginStateSplitNode

com.oracle.graal.nodes.AbstractMergeNode

All Implemented Interfaces:

IterableNodeType, NodeInterface, Simplifiable, AnchoringNode, GuardingNode, LIRLowerable, NodeWithState, StateSplit, Cloneable, Formattable, KindProvider

Direct Known Subclasses:

LoopBeginNode, MergeNode

public abstract class AbstractMergeNode
extends BeginStateSplitNode
implements IterableNodeType, LIRLowerable

Denotes the merging of multiple control-flow paths.

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

Field Summary

Fields

Modifier and Type	Field and Description
protected NodeInputList<EndNode>	ends
static NodeClass<AbstractMergeNode>	TYPE

Fields inherited from class com.oracle.graal.nodes.BeginStateSplitNode

stateAfter

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	AbstractMergeNode(NodeClass<? extends AbstractMergeNode> c)

Method Summary

Modifier and Type	Method and Description
void	addForwardEnd(EndNode end)
NodeIterable<Node>	anchored()
NodeIterable<EndNode>	cfgPredecessors()
void	clearEnds()
protected void	deleteEnd(AbstractEndNode end)
EndNode	forwardEndAt(int index)
int	forwardEndCount()
int	forwardEndIndex(EndNode end)
NodeInputList<EndNode>	forwardEnds()
void	generate(NodeLIRBuilderTool gen)
boolean	isPhiAtMerge(Node value) Determines if a given node is a phi whose merge is this node.
AbstractEndNode	phiPredecessorAt(int index)
int	phiPredecessorCount()
int	phiPredecessorIndex(AbstractEndNode pred)
NodeIterable<PhiNode>	phis()
void	removeEnd(AbstractEndNode pred) Removes the given end from the merge, along with the entries corresponding to this end in the phis connected to the merge.
void	simplify(SimplifierTool tool) This simplify method can deal with a null value for tool, so that it can be used outside of canonicalization.
NodeIterable<ValuePhiNode>	valuePhis()

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

hasSideEffect, setStateAfter, stateAfter

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

getBlockNodes, guards, prepareDelete, prepareDelete, prevBegin, proxies, removeProxies, verify

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

asNode, next, setNext

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, 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, 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

Methods inherited from interface com.oracle.graal.nodes.StateSplit

asNode

Methods inherited from interface com.oracle.graal.nodes.spi.NodeWithState

states

Methods inherited from interface com.oracle.graal.nodes.extended.GuardingNode

asNode

Methods inherited from interface com.oracle.graal.nodes.extended.AnchoringNode

asNode

Field Detail

TYPE

public static final NodeClass<AbstractMergeNode> TYPE

ends

protected NodeInputList<EndNode> ends

Constructor Detail

AbstractMergeNode

protected AbstractMergeNode(NodeClass<? extends AbstractMergeNode> c)

Method Detail

generate

public void generate(NodeLIRBuilderTool gen)

Specified by:

generate in interface LIRLowerable

Overrides:

generate in class AbstractBeginNode

forwardEndIndex

public int forwardEndIndex(EndNode end)

addForwardEnd

public void addForwardEnd(EndNode end)

forwardEndCount

public int forwardEndCount()

forwardEndAt

public EndNode forwardEndAt(int index)

cfgPredecessors

public NodeIterable<EndNode> cfgPredecessors()

Overrides:

cfgPredecessors in class Node

isPhiAtMerge

public boolean isPhiAtMerge(Node value)

Determines if a given node is a phi whose merge is this node.

Parameters:

value - the instruction to test

Returns:

true if value is a phi and its merge is this

removeEnd

public void removeEnd(AbstractEndNode pred)

Removes the given end from the merge, along with the entries corresponding to this end in the phis connected to the merge.

Parameters:

pred - the end to remove

deleteEnd

protected void deleteEnd(AbstractEndNode end)

clearEnds

public void clearEnds()

forwardEnds

public NodeInputList<EndNode> forwardEnds()

phiPredecessorCount

public int phiPredecessorCount()

phiPredecessorIndex

public int phiPredecessorIndex(AbstractEndNode pred)

phiPredecessorAt

public AbstractEndNode phiPredecessorAt(int index)

phis

public NodeIterable<PhiNode> phis()

valuePhis

public NodeIterable<ValuePhiNode> valuePhis()

anchored

public NodeIterable<Node> anchored()

Overrides:

anchored in class AbstractBeginNode

simplify

public void simplify(SimplifierTool tool)

This simplify method can deal with a null value for tool, so that it can be used outside of canonicalization.

Specified by:

simplify in interface Simplifiable

Overrides:

simplify in class AbstractBeginNode