harpoon.IR.Properties
Class UseDefer<HCE extends HCodeElement>

java.lang.Object
  harpoon.IR.Properties.UseDefer<HCE>

Direct Known Subclasses:

BasePointerPreservingUseDefer, IgnoreSpillUseDefer, RegUseDefer, TreeUseDefer

public abstract class UseDefer<HCE extends HCodeElement>
extends Object

UseDefer provides a means to externally associate use and def information with elements of an intermediate representation.

Version:

$Id: UseDefer.java,v 1.5 2004/02/08 05:01:39 cananian Exp $

Author:

Felix S. Klock II <pnkfelix@mit.edu>

Field Summary

static UseDefer

DEFAULT Default UseDefer for HCodeElements which implement UseDefable.

Constructor Summary

UseDefer()

Method Summary

Temp[]	def(HCE hce) Return all the Temps defined by hce.
abstract Collection<Temp>	defC(HCE hce) Returns a Collection of all the Temps that are defined by hce.
Temp[]	use(HCE hce) Return all the Temps used by hce.
abstract Collection<Temp>	useC(HCE hce) Returns a Collection of all the Temps that may be read by hce.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final UseDefer DEFAULT

Default UseDefer for HCodeElements which implement UseDefable. Does nothing but cast the supplied HCodeElement to a UseDefable and invoke the appropriate corresponding method in the UseDefable interface.

See Also:

Comparator, Comparable, Default.comparator

Constructor Detail

UseDefer

public UseDefer()

Method Detail

use

public Temp[] use(HCE hce)

Return all the Temps used by hce.

def

public Temp[] def(HCE hce)

Return all the Temps defined by hce.

useC

public abstract Collection<Temp> useC(HCE hce)

Returns a Collection of all the Temps that may be read by hce.

defC

public abstract Collection<Temp> defC(HCE hce)

Returns a Collection of all the Temps that are defined by hce.