com.oracle.graal.phases.graph

Class MergeableState<T>

java.lang.Object

com.oracle.graal.phases.graph.MergeableState<T>

Direct Known Subclasses:

ConditionalEliminationPhase.State, ValueAnchorCleanupPhase.State

public abstract class MergeableState<T>
extends Object

Constructor Summary

Constructors

Constructor and Description
MergeableState()

Method Summary

Modifier and Type	Method and Description
void	afterSplit(AbstractBeginNode node) This method is called before the successors of a ControlSplitNode are visited.
abstract T	clone()
void	loopBegin(LoopBeginNode loopBegin) This method is called before a loop is entered (before the LoopBeginNode is visited).
void	loopEnds(LoopBeginNode loopBegin, List<T> loopEndStates) This method is called after all LoopEndNodes belonging to a loop have been visited.
abstract boolean	merge(AbstractMergeNode merge, List<T> withStates) This method is called on merge on the state of the first branch.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MergeableState

public MergeableState()

Method Detail

clone

public abstract T clone()

Overrides:

clone in class Object

merge

public abstract boolean merge(AbstractMergeNode merge,
                              List<T> withStates)

This method is called on merge on the state of the first branch. The withStates list contains the states of the of the other branches in the order of the merge's end nodes.

Parameters:

merge - the merge node

withStates - the state at the the merge's end node except the first one.

loopBegin

public void loopBegin(LoopBeginNode loopBegin)

This method is called before a loop is entered (before the LoopBeginNode is visited).

Parameters:

loopBegin - the begin node of the loop

loopEnds

public void loopEnds(LoopBeginNode loopBegin,
                     List<T> loopEndStates)

This method is called after all LoopEndNodes belonging to a loop have been visited.

Parameters:

loopBegin - the begin node of the loop

loopEndStates - the states at the loop ends, sorted according to LoopBeginNode.orderedLoopEnds()

afterSplit

public void afterSplit(AbstractBeginNode node)

This method is called before the successors of a ControlSplitNode are visited.

Parameters:

node - the successor of the control split that is about to be visited