EDU.purdue.cs.bloat.tree

Class PhiStmt

java.lang.Object

EDU.purdue.cs.bloat.tree.Node

EDU.purdue.cs.bloat.tree.Stmt

EDU.purdue.cs.bloat.tree.PhiStmt

All Implemented Interfaces:

Assign

Direct Known Subclasses:

PhiCatchStmt, PhiJoinStmt

public abstract class PhiStmt
extends Stmt
implements Assign

A PhiStmt is inserted into a CFG in Single Static Assignment for. It is used to "merge" uses of the same variable in different basic blocks.

See Also:

PhiJoinStmt, PhiCatchStmt

Field Summary

Fields inherited from class EDU.purdue.cs.bloat.tree.Node

parent

Constructor Summary

Constructors

Constructor and Description
PhiStmt(VarExpr target) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Object	clone()
DefExpr[]	defs() Return the expressions (variables) defined by this PhiStmt.
abstract java.util.Collection	operands()
VarExpr	target()

Methods inherited from class EDU.purdue.cs.bloat.tree.Stmt

cleanupOnly

Methods inherited from class EDU.purdue.cs.bloat.tree.Node

block, cleanup, copyInto, hasParent, key, parent, replaceWith, replaceWith, setKey, setParent, setValueNumber, toString, valueNumber, visit, visitChildren, visitForceChildren, visitOnly

Methods inherited from class java.lang.Object

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

Constructor Detail

PhiStmt

public PhiStmt(VarExpr target)

Constructor.

Parameters:

target - A stack expression or local variable that is the target of this phi-statement.

Method Detail

target

public VarExpr target()

defs

public DefExpr[] defs()

Return the expressions (variables) defined by this PhiStmt. In this case, only the target is defined.

Specified by:

defs in interface Assign

operands

public abstract java.util.Collection operands()

clone

public java.lang.Object clone()

Specified by:

clone in class Stmt