start of new file

[IRC.git] / Robust / src / Analysis / Prefetch / PrefetchPair.java

diff --git a/Robust/src/Analysis/Prefetch/PrefetchPair.java b/Robust/src/Analysis/Prefetch/PrefetchPair.java
index 707a44bd07da8b11249e4c70f3ebd45ff999785c..fa0ecaab1ec560366c7a341faa5264bcd8a7f997 100644 (file)
--- a/Robust/src/Analysis/Prefetch/PrefetchPair.java
+++ b/Robust/src/Analysis/Prefetch/PrefetchPair.java
@@ -4,58 +4,136 @@ import java.util.*;
 import IR.*;
 
 public class PrefetchPair {
-       TempDescriptor td;
-       FieldDescriptor[] fd;
-       int arryindex;
+    public TempDescriptor base;
+    public ArrayList<Descriptor> desc;
+    
+    public PrefetchPair(){
+       base = new TempDescriptor("");
+       desc = new ArrayList<Descriptor>();
+    }
+    
+    public PrefetchPair(TempDescriptor t, Descriptor f) {
+       base = t;
+       desc = new ArrayList<Descriptor>();
+       desc.add(f);
+    }
 
-       public PrefetchPair() {
-       }
-
-       public PrefetchPair(TempDescriptor td) {
-               this.td = td;
-       }
-
-       public PrefetchPair(TempDescriptor td, int index) {
-               this.td = td;
-               fd = new FieldDescriptor[index];
-               arryindex = index;
-       }
+    public PrefetchPair(TempDescriptor t, ArrayList<Descriptor> descriptor) {
+       base = t;
+       desc = new ArrayList<Descriptor>();
+       desc.addAll(descriptor);
+    }
 
-       public TempDescriptor getTemp() {
-               return td;
+    public TempDescriptor getBase() {
+       return base;
+    }
+    
+    public Descriptor getDescAt(int index) {
+       return desc.get(index);
+    }
+    
+    public ArrayList<Descriptor> getDesc() {
+       return desc;
+    }
+    
+    public FieldDescriptor getFieldDesc(int index) {
+       return (FieldDescriptor) desc.get(index);
+    }
+    
+    public IndexDescriptor getIndexDesc(int index) {
+       return (IndexDescriptor) desc.get(index);
+    }
+    
+    public int hashCode() {
+       int hashcode = base.toString().hashCode();
+       if(desc != null) {
+           hashcode^=desc.hashCode();
        }
-
-       public FieldDescriptor getField(int index) {
-               return fd[index];
+       return hashcode;
+    }
+    
+    public String toString() {
+       String label= getBase().toString();
+       if(getDesc() == null)
+           return label;
+       ListIterator it=getDesc().listIterator();
+       for(;it.hasNext();) {
+           Object o = it.next();
+           if(o instanceof FieldDescriptor) {
+               FieldDescriptor fd = (FieldDescriptor) o;
+               label+="."+ fd.toString();
+           } else { 
+               IndexDescriptor id = (IndexDescriptor) o;
+               label+= id.toString();
+           }
        }
-
-       public int  getIndex() {
-               return arryindex;
+       return label;
+    }
+    
+    public boolean equals(Object o) {
+       if(o instanceof PrefetchPair) {
+           PrefetchPair pp = (PrefetchPair) o;
+           return base == pp.base && desc.equals(pp.desc);
        }
-
-       public int hashCode() {
-               int hashcode = td.hashCode(); 
-               for(int i=0; i<arryindex; i++) {
-                       hashcode = hashcode ^ fd[i].hashCode();
+       return false;
+    }
+    
+    public Object clone() {
+       PrefetchPair newpp = new PrefetchPair();
+       newpp.base = this.base;
+       for(int i = 0; i < this.desc.size(); i++) {
+           Object o = desc.get(i);
+           if(o instanceof FieldDescriptor) {
+               newpp.desc.add((FieldDescriptor) o);
+           } else {
+               ArrayList<TempDescriptor> td = new ArrayList<TempDescriptor>();
+               for(int j = 0; j < ((IndexDescriptor)o).tddesc.size(); j++) {
+                   td.add(((IndexDescriptor)o).getTempDescAt(j));
                }
-               return hashcode;
+               IndexDescriptor idesc = new IndexDescriptor();
+               idesc.tddesc = td;
+               idesc.offset = ((IndexDescriptor)o).offset;
+               newpp.desc.add(idesc);
+           }
        }
+       return newpp;
+    }
 
-       public String toString() {
-               //if(getTemp()!=null)
-               return"<"+getTemp()+">";
+    /** This function returns true if a tempdescriptor object is found in the array of descriptors
+     *  for a given prefetch pair else returns false*/
+    public boolean containsTemp(TempDescriptor td) {
+       ArrayList<Descriptor> desc = (ArrayList<Descriptor>) getDesc();
+       for(ListIterator it = desc.listIterator();it.hasNext();) {
+           Object o = it.next();
+           if(o instanceof IndexDescriptor) {
+               ArrayList<TempDescriptor> tdarray = (ArrayList<TempDescriptor>)((IndexDescriptor)o).tddesc;
+               if(tdarray.contains(td)) {
+                   return true;
+               }
+           }
        }
+       return false;
+    }
 
-       public boolean equals(Object o) {
-               if(o instanceof PrefetchPair) {
-                       PrefetchPair pp = (PrefetchPair) o;
-                       if(td != pp.td)
-                               return false;
-                       for(int i=0; i< arryindex; i++) {
-                               if(!fd[i].equals(pp.fd[i]))
-                                       return false;
-                       }
+    /** This function creates a new Arraylist of Descriptors by replacing old tempdescriptors with new
+     * tempdescriptors when there is a match */
+    public PrefetchPair replaceTemp(TempDescriptor td, TempDescriptor[] newtd) {
+       PrefetchPair npp=(PrefetchPair)clone();
+       ArrayList<Descriptor> desc = (ArrayList<Descriptor>) npp.getDesc();
+       for(ListIterator it = desc.listIterator();it.hasNext();) {
+           Object currdesc = it.next();
+           if(currdesc instanceof IndexDescriptor) {
+               ArrayList<TempDescriptor> tdarray = (ArrayList<TempDescriptor>)((IndexDescriptor)currdesc).tddesc;
+               if (tdarray.contains(td)) {
+                   int index = tdarray.indexOf(td);
+                   tdarray.set(index, newtd[0]);
+                   for(int i=1;i<newtd.length;i++) {
+                       tdarray.add(newtd[i]);
+                   }
                }
-               return false;
+           }
        }
+       return npp;
+    }
+
 }