org.jruby.ir.dataflow.analyses

Class LoadLocalVarPlacementNode

java.lang.Object

org.jruby.ir.dataflow.FlowGraphNode

org.jruby.ir.dataflow.analyses.LoadLocalVarPlacementNode

public class LoadLocalVarPlacementNode
extends FlowGraphNode

Field Summary

Fields inherited from class org.jruby.ir.dataflow.FlowGraphNode

basicBlock, problem

Constructor Summary

Constructors

Constructor and Description
LoadLocalVarPlacementNode(DataFlowProblem prob, BasicBlock n)

Method Summary

Methods

Modifier and Type	Method and Description
void	addLoads(Map<Operand,Operand> varRenameMap)
boolean	applyTransferFunction() Compute "OUT/IN" for the current node! The choice of "IN/OUT" is determined by the direction of data flow.
void	buildDataFlowVars(Instr i) Builds the data-flow variables (or facts) for a particular instruction.
void	compute_MEET(Edge e, BasicBlock source, FlowGraphNode pred) "MEET" current solution of "IN/OUT" with "OUT/IN(pred)", where "pred" is a predecessor of the current node! The choice of "IN/OUT" is determined by the direction of data flow.
void	init() Initialize this data flow node for solving the current problem This is done after building dataflow variables for the problem.
void	initSolnForNode() Initialize this data flow node to compute the new solution This is done before iteratively calling the MEET operator.
String	toString()

Methods inherited from class org.jruby.ir.dataflow.FlowGraphNode

buildDataFlowVars, computeDataFlowInfo, finalizeSolnForNode, getBB, getExceptionTargetNode, getNonExitBBExceptionTargetNode, hasExceptionsRescued

Methods inherited from class java.lang.Object

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

Constructor Detail

LoadLocalVarPlacementNode

public LoadLocalVarPlacementNode(DataFlowProblem prob,
                         BasicBlock n)

Method Detail

init

public void init()

Description copied from class: FlowGraphNode

Initialize this data flow node for solving the current problem This is done after building dataflow variables for the problem.

Overrides:

init in class FlowGraphNode

buildDataFlowVars

public void buildDataFlowVars(Instr i)

Description copied from class: FlowGraphNode

Builds the data-flow variables (or facts) for a particular instruction.

Specified by:

buildDataFlowVars in class FlowGraphNode

initSolnForNode

public void initSolnForNode()

Description copied from class: FlowGraphNode

Initialize this data flow node to compute the new solution This is done before iteratively calling the MEET operator.

Specified by:

initSolnForNode in class FlowGraphNode

compute_MEET

public void compute_MEET(Edge e,
                BasicBlock source,
                FlowGraphNode pred)

Description copied from class: FlowGraphNode

"MEET" current solution of "IN/OUT" with "OUT/IN(pred)", where "pred" is a predecessor of the current node! The choice of "IN/OUT" is determined by the direction of data flow.

Specified by:

compute_MEET in class FlowGraphNode

applyTransferFunction

public boolean applyTransferFunction()

Description copied from class: FlowGraphNode

Compute "OUT/IN" for the current node! The choice of "IN/OUT" is determined by the direction of data flow. OUT/IN = transfer-function (facts at start/end of node, instructions of current node processed in fwd/reverse dirn)

Specified by:

applyTransferFunction in class FlowGraphNode

toString

public String toString()

Overrides:

toString in class Object

addLoads

public void addLoads(Map<Operand,Operand> varRenameMap)