harpoon.IR.Quads
Class QuadRSSx

java.lang.Object
  harpoon.ClassFile.HCode<Quad>
      harpoon.IR.Quads.Code
          harpoon.IR.Quads.QuadRSSx

All Implemented Interfaces:

Graph<Quad,Edge>, Serializable

Direct Known Subclasses:

ContCode

public class QuadRSSx
extends Code

Quads.QuadRSSx is a code view in relaxed SSI form. Quad form exposes the details of the java classfile bytecodes in a pseudo-quadruple format. Implementation details of the stack-based JVM are hidden in favor of a flat consistent temporary-variable based approach. The generated quadruples adhere to an QuadNoSSA form (that is, there are no contraints on variable definitions/re-definitions); but PHI and SIGMA functions are allowed. PHI and SIGMA nodes behave semantically as their no-ssa conversion; that is, execution proceeds as if there were implicit MOVEs on the edges leading to/coming from the PHI/SIGMA nodes.

Version:

$Id: QuadRSSx.java,v 1.3 2002/09/01 07:47:20 cananian Exp $

Author:

Brian Demsky <bdemsky@mit.edu>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class harpoon.ClassFile.HCode

HCode.PrintCallback<HCE extends HCodeElement>

Nested classes/interfaces inherited from interface harpoon.Util.Collections.Graph

Graph.Edge<N extends Graph.Node<N,E>,E extends Graph.Edge<N,E>>, Graph.Node<N extends Graph.Node<N,E>,E extends Graph.Edge<N,E>>

Field Summary

static String

codename The name of this code view.

Fields inherited from class harpoon.IR.Quads.Code

ai, parent, qf, quads

Constructor Summary

protected

QuadRSSx(HMethod parent, Quad quads) Create a new code object given a quadruple representation of the method instructions.

Method Summary

HCodeAndMaps<Quad>	clone(HMethod newMethod) Clone this code representation.
static HCodeFactory	codeFactory(HCodeFactory hcf) Return a code factory for QuadRSSx, given a code factory for QuadNoSSA or QuadSSI.
String	getName() Return the name of this code view.

Methods inherited from class harpoon.IR.Quads.Code

cloneHelper, cloneHelper, elementArrayFactory, getAllocationInformation, getDerivation, getElements, getElementsI, getLeafElements, getMethod, getRootElement, newQF, nodes, notifyReplace, print, selectAllocations, selectCALLs, selectQuads, setAllocationInformation

Methods inherited from class harpoon.ClassFile.HCode

clone, elementIndexer, getElementsL, print, toString

Methods inherited from class java.lang.Object

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

Field Detail

codename

public static final String codename

The name of this code view.

See Also:

Constant Field Values

Constructor Detail

QuadRSSx

protected QuadRSSx(HMethod parent,
                   Quad quads)

Create a new code object given a quadruple representation of the method instructions.

Method Detail

clone

public HCodeAndMaps<Quad> clone(HMethod newMethod)

Clone this code representation. The clone has its own copy of the quad graph.

Specified by:

clone in class Code

getName

public String getName()

Return the name of this code view.

Specified by:

getName in class Code

Returns:

the string "relaxed-quad-ssi".

codeFactory

public static HCodeFactory codeFactory(HCodeFactory hcf)

Return a code factory for QuadRSSx, given a code factory for QuadNoSSA or QuadSSI.