harpoon.IR.Tree
Class TreeUseDefer

java.lang.Object
  harpoon.IR.Properties.UseDefer<Tree>
      harpoon.IR.Tree.TreeUseDefer

public class TreeUseDefer
extends UseDefer<Tree>

TreeUseDefer implements the Properties.UseDefer interface for non-SEQ Stms of a tree.

Version:

$Id: TreeUseDefer.java,v 1.5 2004/02/08 01:55:51 cananian Exp $

Author:

C. Scott Ananian <cananian@alumni.princeton.edu>

Field Summary

Fields inherited from class harpoon.IR.Properties.UseDefer

DEFAULT

Constructor Summary

TreeUseDefer(Code code)
Creates a UseDefer.

Method Summary

Collection<Temp>	defC(Tree tree) Returns a collection of Temps defined by hce.
Collection<Temp>	useC(Tree hce) Returns a collection of Temps which are used by the statement/expression subtree rooted at hce.

Methods inherited from class harpoon.IR.Properties.UseDefer

def, use

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeUseDefer

public TreeUseDefer(Code code)

Creates a UseDefer.

Method Detail

defC

public Collection<Temp> defC(Tree tree)

Returns a collection of Temps defined by hce.

The only Tree.Trees which define Temps are CALL, NATIVECALL, METHOD, and MOVE when the destination expression is a TEMP. For all other elements, this method returns a zero-element collection.

Specified by:

defC in class UseDefer<Tree>

useC

public Collection<Temp> useC(Tree hce)

Returns a collection of Temps which are used by the statement/expression subtree rooted at hce.

Specified by:

useC in class UseDefer<Tree>