harpoon.IR.LowQuad
Class PAOFFSET

java.lang.Object
  harpoon.IR.Quads.Quad
      harpoon.IR.LowQuad.LowQuad
          harpoon.IR.LowQuad.PCONST
              harpoon.IR.LowQuad.PAOFFSET

All Implemented Interfaces:

HCodeElement, CFGraphable<Quad,Edge>, UseDefable, Graph.Node<Quad,Edge>, Serializable, Cloneable, Comparable<Quad>

public class PAOFFSET
extends PCONST

PAOFFSET computes the POINTER offset needed to access a given array element.

Version:

$Id: PAOFFSET.java,v 1.5 2002/04/11 04:00:21 cananian Exp $

Author:

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

See Also:

Serialized Form

Field Summary

protected HClass	arrayType The array type.
protected Temp	index The index into the array.

Fields inherited from class harpoon.IR.LowQuad.PCONST

dst

Fields inherited from class harpoon.IR.Quads.Quad

arrayFactory

Constructor Summary

PAOFFSET(LowQuadFactory qf, HCodeElement source, Temp dst, HClass arrayType, Temp index)
Creates a PAOFFSET representing the POINTER offset needed to access a given array element.

Method Summary

HClass	arrayType() Returns the array type.
Temp	index() Returns the Temp holding the index of the array element to address.
int	kind() Return an integer enumeration of the kind of this Quad.
Quad	rename(QuadFactory qf, TempMap defMap, TempMap useMap) Create a new Quad identical to the receiver, but with all Temps renamed according to a mapping.
String	toString() Force everyone to reimplement toString()
Temp[]	use() Return all the Temps used by this Quad.

Methods inherited from class harpoon.IR.LowQuad.PCONST

def, dst

Methods inherited from class harpoon.IR.LowQuad.LowQuad

accept, accept

Methods inherited from class harpoon.IR.Quads.Quad

addEdge, addEdges, addHandlers, clone, clone, clone, compareTo, defC, edgeC, edges, getFactory, getID, getLineNumber, getSourceFile, handlers, hashCode, isPred, isSucc, map, map, map, next, next, nextEdge, nextEdge, nextLength, pred, predC, prev, prev, prevEdge, prevEdge, prevLength, remove, removeHandlers, rename, replace, succ, succC, toLongString, transferHandlers, useC

Methods inherited from class java.lang.Object

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

Field Detail

arrayType

protected final HClass arrayType

The array type.

index

protected final Temp index

The index into the array.

Constructor Detail

PAOFFSET

public PAOFFSET(LowQuadFactory qf,
                HCodeElement source,
                Temp dst,
                HClass arrayType,
                Temp index)

Creates a PAOFFSET representing the POINTER offset needed to access a given array element.

Parameters:

dst - the Temp in which to store the computed offset.

arrayType - the type of the array the element is in.

index - the index of the array element to address.

Method Detail

arrayType

public HClass arrayType()

Returns the array type.

index

public Temp index()

Returns the Temp holding the index of the array element to address.

kind

public int kind()

Description copied from class: Quad

Return an integer enumeration of the kind of this Quad. The enumerated values are defined in QuadKind.

Specified by:

kind in class Quad

use

public Temp[] use()

Description copied from class: Quad

Return all the Temps used by this Quad.

Specified by:

use in interface UseDefable

Overrides:

use in class Quad

rename

public Quad rename(QuadFactory qf,
                   TempMap defMap,
                   TempMap useMap)

Description copied from class: Quad

Create a new Quad identical to the receiver, but with all Temps renamed according to a mapping. The new Quad will have no edges.

The new Quad will come from the specified QuadFactory.

Specified by:

rename in class Quad

toString

public String toString()

Description copied from class: Quad

Force everyone to reimplement toString()

Specified by:

toString in class Quad