harpoon.IR.Tree
Class ALIGN

java.lang.Object
  harpoon.IR.Tree.Tree
      harpoon.IR.Tree.Stm
          harpoon.IR.Tree.ALIGN

All Implemented Interfaces:

HCodeElement, HDataElement

public class ALIGN
extends Stm
implements HDataElement

ALIGN statements are used to enforce a given alignment on the following data items. Its effect on code is undefined. The next DATUM element (and any LABEL between the ALIGN and the DATUM) will be aligned on the specified n-byte boundary.

Version:

$Id: ALIGN.java,v 1.4 2002/04/10 03:05:36 cananian Exp $

Author:

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

Nested Class Summary

Nested classes/interfaces inherited from class harpoon.IR.Tree.Tree

Tree.CloneCallback

Field Summary

int	alignment The alignment to enforce, in bytes.

Fields inherited from class harpoon.IR.Tree.Tree

arrayFactory, child

Constructor Summary

ALIGN(TreeFactory tf, HCodeElement source, int alignment)
Creates a ALIGN.

Method Summary

void	accept(TreeVisitor v) Accept a visitor.
Stm	build(TreeFactory tf, ExpList kids)
int	kind() Return an integer enumeration of the kind of this Tree.
Tree	rename(TreeFactory tf, TempMap tm, Tree.CloneCallback cb) Rename while cloning a subtree.
String	toString()

Methods inherited from class harpoon.IR.Tree.Stm

build, isNop, linearize, toStm

Methods inherited from class harpoon.IR.Tree.Tree

clone, clone, getChild, getFactory, getFirstChild, getID, getLineNumber, getParent, getSibling, getSourceFile, hashCode, kids, rename, replace, setChild, unlink

Methods inherited from class java.lang.Object

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

Methods inherited from interface harpoon.ClassFile.HDataElement

getID, getSourceFile

Field Detail

alignment

public final int alignment

The alignment to enforce, in bytes. Zero or one specify no particular alignment.

Constructor Detail

ALIGN

public ALIGN(TreeFactory tf,
             HCodeElement source,
             int alignment)

Creates a ALIGN.

Method Detail

kind

public int kind()

Description copied from class: Tree

Return an integer enumeration of the kind of this Tree. The enumerated values are defined in TreeKind.

Specified by:

kind in class Tree

build

public Stm build(TreeFactory tf,
                 ExpList kids)

Specified by:

build in class Stm

accept

public void accept(TreeVisitor v)

Accept a visitor.

Specified by:

accept in class Tree

rename

public Tree rename(TreeFactory tf,
                   TempMap tm,
                   Tree.CloneCallback cb)

Description copied from class: Tree

Rename while cloning a subtree. This node and all child nodes are cloned; the 'temp' information of all TEMP nodes are renamed according to the supplied TempMap. Note that Temps not belonging to this.getFactory().tempFactory() are not affected. The callback() method of the supplied CloneCallback is invoked once on each subtree cloned, starting from the leaves and working back to the root in a post-order depth-first manner.

Specified by:

rename in class Tree

toString

public String toString()

Overrides:

toString in class Object