Output to cerr rather than cout so that debug info doesn't mess up assembly generation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@840 91177308-0d34-0410-b5e6-96231b3b80d8

12 files changed, 199 insertions, 209 deletions

diff --git a/lib/CodeGen/RegAlloc/InterferenceGraph.cpp b/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
index d8ec247..4efe30e 100644
--- a/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
+++ b/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
@@ -7,7 +7,7 @@ InterferenceGraph::InterferenceGraph(RegClass *const RC) : RegCl(RC),
   IG = NULL;         
   Size = 0;            
   if( DEBUG_RA) {
-    cout << "Interference graph created!" << endl;
+    cerr << "Interference graph created!" << endl;
   }
 }
 
@@ -65,7 +65,7 @@ void InterferenceGraph::setInterference(const LiveRange *const LR1,
   char *val;
 
   if( DEBUG_RA > 1) 
-    cout << "setting intf for: [" << row << "][" <<  col << "]" << endl; 
+    cerr << "setting intf for: [" << row << "][" <<  col << "]" << endl; 
 
   ( row > col) ?  val = &IG[row][col]: val = &IG[col][row]; 
 
@@ -118,9 +118,9 @@ void InterferenceGraph::mergeIGNodesOfLRs(const LiveRange *const LR1,
   assertIGNode( SrcNode );
 
   if( DEBUG_RA > 1) {
-    cout << "Merging LRs: \""; LR1->printSet(); 
-    cout << "\" and \""; LR2->printSet();
-    cout << "\"" << endl;
+    cerr << "Merging LRs: \""; LR1->printSet(); 
+    cerr << "\" and \""; LR2->printSet();
+    cerr << "\"" << endl;
   }
 
   unsigned SrcDegree = SrcNode->getNumOfNeighbors();
@@ -147,10 +147,10 @@ void InterferenceGraph::mergeIGNodesOfLRs(const LiveRange *const LR1,
       setInterference(LR1, LROfNeigh );  
     }
     
-    //cout<< "  #Neighs - Neigh: ["<< NeighNode->getIndex()<< "] ";
-    //cout << NeighNode->getNumOfNeighbors();
-    //cout << " Dest: [" << DestNode->getIndex() << "] ";
-    //cout << DestNode->getNumOfNeighbors()  << endl;
+    //cerr<< "  #Neighs - Neigh: ["<< NeighNode->getIndex()<< "] ";
+    //cerr << NeighNode->getNumOfNeighbors();
+    //cerr << " Dest: [" << DestNode->getIndex() << "] ";
+    //cerr << DestNode->getNumOfNeighbors()  << endl;
 
   }
 
@@ -193,13 +193,13 @@ void InterferenceGraph::printIG() const
     if( ! Node )
       continue;                         // skip empty rows
 
-    cout << " [" << i << "] ";
+    cerr << " [" << i << "] ";
 
       for( unsigned int j=0; j < Size; j++) {
 	if( j >= i) break;
-	if( IG[i][j] ) cout << "(" << i << "," << j << ") ";
+	if( IG[i][j] ) cerr << "(" << i << "," << j << ") ";
       }
-      cout << endl;
+      cerr << endl;
     }
 }
 
@@ -215,10 +215,10 @@ void InterferenceGraph::printIGNodeList() const
     if( ! Node )
       continue;
 
-    cout << " [" << Node->getIndex() << "] ";
+    cerr << " [" << Node->getIndex() << "] ";
     (Node->getParentLR())->printSet(); 
     //int Deg = Node->getCurDegree();
-    cout << "\t <# of Neighs: " << Node->getNumOfNeighbors() << ">" << endl;
+    cerr << "\t <# of Neighs: " << Node->getNumOfNeighbors() << ">" << endl;
     
   }
 }
diff --git a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
index c137e67..1989240 100644
--- a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
+++ b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
@@ -46,7 +46,7 @@ void LiveRangeInfo::constructLiveRanges()
 {  
 
   if( DEBUG_RA) 
-    cout << "Consturcting Live Ranges ..." << endl;
+    cerr << "Consturcting Live Ranges ..." << endl;
 
   // first find the live ranges for all incoming args of the method since
   // those LRs start from the start of the method
@@ -75,8 +75,8 @@ void LiveRangeInfo::constructLiveRanges()
 
     			   
     if( DEBUG_RA > 1) {     
-      cout << " adding LiveRange for argument ";    
-      printValue( (const Value *) *ArgIt); cout  << endl;
+      cerr << " adding LiveRange for argument ";    
+      printValue( (const Value *) *ArgIt); cerr  << endl;
     }
   }
 
@@ -124,9 +124,9 @@ void LiveRangeInfo::constructLiveRanges()
 	    OpI.getMachineOperand().getOperandType();
 
 	  if ( OpTyp == MachineOperand::MO_CCRegister) {
-	    cout << "\n**CC reg found. Is Def=" << OpI.isDef() << " Val:";
+	    cerr << "\n**CC reg found. Is Def=" << OpI.isDef() << " Val:";
 	    printValue( OpI.getMachineOperand().getVRegValue() );
-	    cout << endl;
+	    cerr << endl;
 	  }
 	}
 
@@ -139,8 +139,8 @@ void LiveRangeInfo::constructLiveRanges()
 	  // Only instruction values are accepted for live ranges here
 
 	  if( Def->getValueType() != Value::InstructionVal ) {
-	    cout << "\n**%%Error: Def is not an instruction val. Def=";
-	    printValue( Def ); cout << endl;
+	    cerr << "\n**%%Error: Def is not an instruction val. Def=";
+	    printValue( Def ); cerr << endl;
 	    continue;
 	  }
 
@@ -156,8 +156,8 @@ void LiveRangeInfo::constructLiveRanges()
 	    LiveRangeMap[ Def ] = DefRange; // update the map
 
 	    if( DEBUG_RA > 1) { 	    
-	      cout << "  creating a LR for def: ";    
-	      printValue(Def); cout  << endl;
+	      cerr << "  creating a LR for def: ";    
+	      printValue(Def); cerr  << endl;
 	    }
 
 	    // set the register class of the new live range
@@ -171,7 +171,7 @@ void LiveRangeInfo::constructLiveRanges()
 
 
 	    if(isCC && DEBUG_RA) {
-	      cout  << "\a**created a LR for a CC reg:";
+	      cerr  << "\a**created a LR for a CC reg:";
 	      printValue( OpI.getMachineOperand().getVRegValue() );
 	    }
 
@@ -185,8 +185,8 @@ void LiveRangeInfo::constructLiveRanges()
 	    LiveRangeMap[ Def ] = DefRange; 
 
 	    if( DEBUG_RA > 1) { 
-	      cout << "   added to an existing LR for def: ";  
-	      printValue( Def ); cout  << endl;
+	      cerr << "   added to an existing LR for def: ";  
+	      printValue( Def ); cerr  << endl;
 	    }
 	  }
 
@@ -206,7 +206,7 @@ void LiveRangeInfo::constructLiveRanges()
   suggestRegs4CallRets();
 
   if( DEBUG_RA) 
-    cout << "Initial Live Ranges constructed!" << endl;
+    cerr << "Initial Live Ranges constructed!" << endl;
 
 }
 
@@ -257,7 +257,7 @@ void LiveRangeInfo::coalesceLRs()
 */
 
   if( DEBUG_RA) 
-    cout << endl << "Coalscing LRs ..." << endl;
+    cerr << endl << "Coalscing LRs ..." << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
@@ -274,9 +274,9 @@ void LiveRangeInfo::coalesceLRs()
       const MachineInstr * MInst = *MInstIterator; 
 
       if( DEBUG_RA > 1) {
-	cout << " *Iterating over machine instr ";
+	cerr << " *Iterating over machine instr ";
 	MInst->dump();
-	cout << endl;
+	cerr << endl;
       }
 
 
@@ -298,8 +298,8 @@ void LiveRangeInfo::coalesceLRs()
 
 	      //don't warn about labels
 	      if (!((*UseI)->getType())->isLabelType() && DEBUG_RA) {
-		cout<<" !! Warning: No LR for use "; printValue(*UseI);
-		cout << endl;
+		cerr<<" !! Warning: No LR for use "; printValue(*UseI);
+		cerr << endl;
 	      }
 	      continue;                 // ignore and continue
 	    }
@@ -345,7 +345,7 @@ void LiveRangeInfo::coalesceLRs()
   } // for all BBs
 
   if( DEBUG_RA) 
-    cout << endl << "Coalscing Done!" << endl;
+    cerr << endl << "Coalscing Done!" << endl;
 
 }
 
@@ -359,11 +359,11 @@ void LiveRangeInfo::coalesceLRs()
 void LiveRangeInfo::printLiveRanges()
 {
   LiveRangeMapType::iterator HMI = LiveRangeMap.begin();   // hash map iterator
-  cout << endl << "Printing Live Ranges from Hash Map:" << endl;
+  cerr << endl << "Printing Live Ranges from Hash Map:" << endl;
   for( ; HMI != LiveRangeMap.end() ; HMI ++ ) {
     if( (*HMI).first && (*HMI).second ) {
-      cout <<" "; printValue((*HMI).first);  cout  << "\t: "; 
-      ((*HMI).second)->printSet(); cout << endl;
+      cerr <<" "; printValue((*HMI).first);  cerr  << "\t: "; 
+      ((*HMI).second)->printSet(); cerr << endl;
     }
   }
 }
diff --git a/lib/CodeGen/RegAlloc/PhyRegAlloc.cpp b/lib/CodeGen/RegAlloc/PhyRegAlloc.cpp
index e0b55db..c00bd3d 100644
--- a/lib/CodeGen/RegAlloc/PhyRegAlloc.cpp
+++ b/lib/CodeGen/RegAlloc/PhyRegAlloc.cpp
@@ -36,7 +36,7 @@ PhyRegAlloc::PhyRegAlloc(const Method *const M,
 
 void PhyRegAlloc::createIGNodeListsAndIGs()
 {
-  if(DEBUG_RA ) cout << "Creating LR lists ..." << endl;
+  if(DEBUG_RA ) cerr << "Creating LR lists ..." << endl;
 
   // hash map iterator
   LiveRangeMapType::const_iterator HMI = (LRI.getLiveRangeMap())->begin();   
@@ -52,8 +52,8 @@ void PhyRegAlloc::createIGNodeListsAndIGs()
 
 	if( !L) { 
 	  if( DEBUG_RA) {
-	    cout << "\n*?!?Warning: Null liver range found for: ";
-	    printValue( (*HMI).first) ; cout << endl;
+	    cerr << "\n*?!?Warning: Null liver range found for: ";
+	    printValue( (*HMI).first) ; cerr << endl;
 	  }
 	  continue;
 	}
@@ -75,7 +75,7 @@ void PhyRegAlloc::createIGNodeListsAndIGs()
     RegClassList[ rc ]->createInterferenceGraph();
 
   if( DEBUG_RA)
-    cout << "LRLists Created!" << endl;
+    cerr << "LRLists Created!" << endl;
 }
 
 
@@ -105,8 +105,8 @@ void PhyRegAlloc::addInterference(const Value *const Def,
   for( ; LIt != LVSet->end(); ++LIt) {
 
     if( DEBUG_RA > 1) {
-      cout << "< Def="; printValue(Def);     
-      cout << ", Lvar=";  printValue( *LIt); cout  << "> ";
+      cerr << "< Def="; printValue(Def);     
+      cerr << ", Lvar=";  printValue( *LIt); cerr  << "> ";
     }
 
     //  get the live range corresponding to live var
@@ -133,8 +133,8 @@ void PhyRegAlloc::addInterference(const Value *const Def,
     else if(DEBUG_RA > 1)  { 
       // we will not have LRs for values not explicitly allocated in the
       // instruction stream (e.g., constants)
-      cout << " warning: no live range for " ; 
-      printValue( *LIt); cout << endl; }
+      cerr << " warning: no live range for " ; 
+      printValue( *LIt); cerr << endl; }
     
   }
  
@@ -148,7 +148,7 @@ void PhyRegAlloc::addInterference(const Value *const Def,
 void PhyRegAlloc::buildInterferenceGraphs()
 {
 
-  if(DEBUG_RA) cout << "Creating interference graphs ..." << endl;
+  if(DEBUG_RA) cerr << "Creating interference graphs ..." << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
@@ -215,7 +215,7 @@ void PhyRegAlloc::buildInterferenceGraphs()
   addInterferencesForArgs();            // add interference for method args
 
   if( DEBUG_RA)
-    cout << "Interference graphs calculted!" << endl;
+    cerr << "Interference graphs calculted!" << endl;
 
 }
 
@@ -241,8 +241,8 @@ void PhyRegAlloc::addInterferencesForArgs()
     addInterference( *ArgIt, InSet, false );  // add interferences between 
                                               // args and LVars at start
     if( DEBUG_RA > 1) {
-      cout << " - %% adding interference for  argument ";    
-      printValue( (const Value *) *ArgIt); cout  << endl;
+      cerr << " - %% adding interference for  argument ";    
+      printValue( (const Value *) *ArgIt); cerr  << endl;
     }
   }
 }
@@ -326,7 +326,7 @@ void PhyRegAlloc::insertCallerSavingCode(const MachineInstr *MInst,
 	    
 	    PushedRegSet.insert( Reg );
 	    StackOff += 4; // ****TODO: Correct ??????
-	    cout << "Inserted caller saving instr");
+	    cerr << "Inserted caller saving instr");
 	    
 	  } // if not already pushed
 
@@ -378,9 +378,9 @@ void PhyRegAlloc::updateMachineCode()
 
 	  for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
 
-	    cout << "*ADDED instr opcode: ";
-	    cout << TargetInstrDescriptors[(*AdIt)->getOpCode()].opCodeString;
-	    cout << endl;
+	    cerr << "*ADDED instr opcode: ";
+	    cerr << TargetInstrDescriptors[(*AdIt)->getOpCode()].opCodeString;
+	    cerr << endl;
 	    
 	    MInstIterator = MIVec.insert( MInstIterator, *AdIt );
 	    ++MInstIterator;
@@ -409,7 +409,7 @@ void PhyRegAlloc::updateMachineCode()
 	  // delete this condition checking later (must assert if Val is null)
 	  if( !Val) {
             if (DEBUG_RA)
-              cout << "Warning: NULL Value found for operand" << endl;
+              cerr << "Warning: NULL Value found for operand" << endl;
 	    continue;
 	  }
 	  assert( Val && "Value is NULL");   
@@ -421,8 +421,8 @@ void PhyRegAlloc::updateMachineCode()
 	    // nothing to worry if it's a const or a label
 
             if (DEBUG_RA) {
-              cout << "*NO LR for inst opcode: ";
-              cout << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
+              cerr << "*NO LR for inst opcode: ";
+              cerr << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
             }
 
 	    if( Op.getAllocatedRegNum() == -1)
@@ -442,16 +442,16 @@ void PhyRegAlloc::updateMachineCode()
 
 	    //TM.getInstrInfo().isReturn(MInst->getOpCode())
 	    else if(TM.getInstrInfo().isReturn(MInst->getOpCode()) ) {
-	      if (DEBUG_RA) cout << endl << "RETURN found" << endl;
+	      if (DEBUG_RA) cerr << endl << "RETURN found" << endl;
  	      Op.setRegForValue( MRI.getReturnAddressReg() );
 
 	    }
 
 	    if (Val->getValueType() == Value::InstructionVal)
 	    {
-	      cout << "!Warning: No LiveRange for: ";
-	      printValue( Val); cout << " Type: " << Val->getValueType();
-	      cout << " RegVal=" <<  Op.getAllocatedRegNum() << endl;
+	      cerr << "!Warning: No LiveRange for: ";
+	      printValue( Val); cerr << " Type: " << Val->getValueType();
+	      cerr << " RegVal=" <<  Op.getAllocatedRegNum() << endl;
 	    }
 
 #endif
@@ -483,14 +483,14 @@ void PhyRegAlloc::updateMachineCode()
 void PhyRegAlloc::printMachineCode()
 {
 
-  cout << endl << ";************** Method ";
-  cout << Meth->getName() << " *****************" << endl;
+  cerr << endl << ";************** Method ";
+  cerr << Meth->getName() << " *****************" << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
   for( ; BBI != Meth->end(); ++BBI) {          // traverse BBs in random order
 
-    cout << endl ; printLabel( *BBI); cout << ": ";
+    cerr << endl ; printLabel( *BBI); cerr << ": ";
 
     // get the iterator for machine instructions
     MachineCodeForBasicBlock& MIVec = (*BBI)->getMachineInstrVec();
@@ -502,8 +502,8 @@ void PhyRegAlloc::printMachineCode()
       MachineInstr *const MInst = *MInstIterator; 
 
 
-      cout << endl << "\t";
-      cout << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
+      cerr << endl << "\t";
+      cerr << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
       
 
       //for(MachineInstr::val_op_const_iterator OpI(MInst);!OpI.done();++OpI) {
@@ -519,14 +519,14 @@ void PhyRegAlloc::printMachineCode()
 	  const Value *const Val = Op.getVRegValue () ;
 	  // ****this code is temporary till NULL Values are fixed
 	  if( ! Val ) {
-	    cout << "\t<*NULL*>";
+	    cerr << "\t<*NULL*>";
 	    continue;
 	  }
 
 	  // if a label or a constant
 	  if( (Val->getValueType() == Value::BasicBlockVal)  ) {
 
-	    cout << "\t"; printLabel(	Op.getVRegValue	() );
+	    cerr << "\t"; printLabel(	Op.getVRegValue	() );
 	  }
 	  else {
 	    // else it must be a register value
@@ -534,27 +534,27 @@ void PhyRegAlloc::printMachineCode()
 
 	    //if( RegNum != 1000)
 
-	      cout << "\t" << "%" << MRI.getUnifiedRegName( RegNum );
-	    // else cout << "\t<*NoReg*>";
+	      cerr << "\t" << "%" << MRI.getUnifiedRegName( RegNum );
+	    // else cerr << "\t<*NoReg*>";
 
 	  }
 
 	} 
 	else if(Op.getOperandType() ==  MachineOperand::MO_MachineRegister) {
-	  cout << "\t" << "%" << MRI.getUnifiedRegName(Op.getMachineRegNum());
+	  cerr << "\t" << "%" << MRI.getUnifiedRegName(Op.getMachineRegNum());
 	}
 
 	else 
-	  cout << "\t" << Op;      // use dump field
+	  cerr << "\t" << Op;      // use dump field
       }
 
     }
 
-    cout << endl;
+    cerr << endl;
 
   }
 
-  cout << endl;
+  cerr << endl;
 }
 
 
@@ -617,9 +617,9 @@ void PhyRegAlloc::colorIncomingArgs()
 void PhyRegAlloc::printLabel(const Value *const Val)
 {
   if( Val->hasName() )
-    cout  << Val->getName();
+    cerr  << Val->getName();
   else
-    cout << "Label" <<  Val;
+    cerr << "Label" <<  Val;
 }
 
 
diff --git a/lib/CodeGen/RegAlloc/RegClass.cpp b/lib/CodeGen/RegAlloc/RegClass.cpp
index 9c3e08c..a37d82d 100644
--- a/lib/CodeGen/RegAlloc/RegClass.cpp
+++ b/lib/CodeGen/RegAlloc/RegClass.cpp
@@ -9,7 +9,7 @@ RegClass::RegClass(const Method *const M,
                      IG(this), IGNodeStack(), ReservedColorList(RCL)
 {
   if( DEBUG_RA)
-    cout << "Created Reg Class: " << RegClassID << endl;
+    cerr << "Created Reg Class: " << RegClassID << endl;
 
   // This constructor inits IG. The actual matrix is created by a call to 
   // createInterferenceGraph() above.
@@ -21,7 +21,7 @@ RegClass::RegClass(const Method *const M,
 
 void RegClass::colorAllRegs()
 {
-  if(DEBUG_RA) cout << "Coloring IGs ..." << endl;
+  if(DEBUG_RA) cerr << "Coloring IGs ..." << endl;
 
   //preColorIGNodes();                    // pre-color IGNodes
   pushAllIGNodes();                     // push all IG Nodes
@@ -55,9 +55,9 @@ void RegClass::pushAllIGNodes()
   bool PushedAll  = pushUnconstrainedIGNodes(); 
 
   if( DEBUG_RA) {
-    cout << " Puhsed all-unconstrained IGNodes. ";
-    if( PushedAll ) cout << " No constrained nodes left.";
-    cout << endl;
+    cerr << " Puhsed all-unconstrained IGNodes. ";
+    if( PushedAll ) cerr << " No constrained nodes left.";
+    cerr << endl;
   }
 
   if( PushedAll )                       // if NO constrained nodes left
@@ -112,8 +112,8 @@ bool  RegClass::pushUnconstrainedIGNodes()
       IGNode->pushOnStack();            // set OnStack and dec deg of neighs
 
       if (DEBUG_RA > 1) {
-	cout << " pushed un-constrained IGNode " << IGNode->getIndex() ;
-	cout << " on to stack" << endl;
+	cerr << " pushed un-constrained IGNode " << IGNode->getIndex() ;
+	cerr << " on to stack" << endl;
       }
     }
     else pushedall = false;             // we didn't push all live ranges
@@ -170,16 +170,16 @@ void RegClass::colorIGNode(IGNode *const Node)
   }
   else {
     if( DEBUG_RA ) {
-      cout << " Node " << Node->getIndex();
-      cout << " already colored with color " << Node->getColor() << endl;
+      cerr << " Node " << Node->getIndex();
+      cerr << " already colored with color " << Node->getColor() << endl;
     }
   }
 
 
   if( !Node->hasColor() ) {
     if( DEBUG_RA ) {
-      cout << " Node " << Node->getIndex();
-      cout << " - could not find a color (needs spilling)" << endl;
+      cerr << " Node " << Node->getIndex();
+      cerr << " - could not find a color (needs spilling)" << endl;
     }
   }
 
diff --git a/lib/Target/SparcV9/RegAlloc/InterferenceGraph.cpp b/lib/Target/SparcV9/RegAlloc/InterferenceGraph.cpp
index d8ec247..4efe30e 100644
--- a/lib/Target/SparcV9/RegAlloc/InterferenceGraph.cpp
+++ b/lib/Target/SparcV9/RegAlloc/InterferenceGraph.cpp
@@ -7,7 +7,7 @@ InterferenceGraph::InterferenceGraph(RegClass *const RC) : RegCl(RC),
   IG = NULL;         
   Size = 0;            
   if( DEBUG_RA) {
-    cout << "Interference graph created!" << endl;
+    cerr << "Interference graph created!" << endl;
   }
 }
 
@@ -65,7 +65,7 @@ void InterferenceGraph::setInterference(const LiveRange *const LR1,
   char *val;
 
   if( DEBUG_RA > 1) 
-    cout << "setting intf for: [" << row << "][" <<  col << "]" << endl; 
+    cerr << "setting intf for: [" << row << "][" <<  col << "]" << endl; 
 
   ( row > col) ?  val = &IG[row][col]: val = &IG[col][row]; 
 
@@ -118,9 +118,9 @@ void InterferenceGraph::mergeIGNodesOfLRs(const LiveRange *const LR1,
   assertIGNode( SrcNode );
 
   if( DEBUG_RA > 1) {
-    cout << "Merging LRs: \""; LR1->printSet(); 
-    cout << "\" and \""; LR2->printSet();
-    cout << "\"" << endl;
+    cerr << "Merging LRs: \""; LR1->printSet(); 
+    cerr << "\" and \""; LR2->printSet();
+    cerr << "\"" << endl;
   }
 
   unsigned SrcDegree = SrcNode->getNumOfNeighbors();
@@ -147,10 +147,10 @@ void InterferenceGraph::mergeIGNodesOfLRs(const LiveRange *const LR1,
       setInterference(LR1, LROfNeigh );  
     }
     
-    //cout<< "  #Neighs - Neigh: ["<< NeighNode->getIndex()<< "] ";
-    //cout << NeighNode->getNumOfNeighbors();
-    //cout << " Dest: [" << DestNode->getIndex() << "] ";
-    //cout << DestNode->getNumOfNeighbors()  << endl;
+    //cerr<< "  #Neighs - Neigh: ["<< NeighNode->getIndex()<< "] ";
+    //cerr << NeighNode->getNumOfNeighbors();
+    //cerr << " Dest: [" << DestNode->getIndex() << "] ";
+    //cerr << DestNode->getNumOfNeighbors()  << endl;
 
   }
 
@@ -193,13 +193,13 @@ void InterferenceGraph::printIG() const
     if( ! Node )
       continue;                         // skip empty rows
 
-    cout << " [" << i << "] ";
+    cerr << " [" << i << "] ";
 
       for( unsigned int j=0; j < Size; j++) {
 	if( j >= i) break;
-	if( IG[i][j] ) cout << "(" << i << "," << j << ") ";
+	if( IG[i][j] ) cerr << "(" << i << "," << j << ") ";
       }
-      cout << endl;
+      cerr << endl;
     }
 }
 
@@ -215,10 +215,10 @@ void InterferenceGraph::printIGNodeList() const
     if( ! Node )
       continue;
 
-    cout << " [" << Node->getIndex() << "] ";
+    cerr << " [" << Node->getIndex() << "] ";
     (Node->getParentLR())->printSet(); 
     //int Deg = Node->getCurDegree();
-    cout << "\t <# of Neighs: " << Node->getNumOfNeighbors() << ">" << endl;
+    cerr << "\t <# of Neighs: " << Node->getNumOfNeighbors() << ">" << endl;
     
   }
 }
diff --git a/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp b/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
index c137e67..1989240 100644
--- a/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
+++ b/lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
@@ -46,7 +46,7 @@ void LiveRangeInfo::constructLiveRanges()
 {  
 
   if( DEBUG_RA) 
-    cout << "Consturcting Live Ranges ..." << endl;
+    cerr << "Consturcting Live Ranges ..." << endl;
 
   // first find the live ranges for all incoming args of the method since
   // those LRs start from the start of the method
@@ -75,8 +75,8 @@ void LiveRangeInfo::constructLiveRanges()
 
     			   
     if( DEBUG_RA > 1) {     
-      cout << " adding LiveRange for argument ";    
-      printValue( (const Value *) *ArgIt); cout  << endl;
+      cerr << " adding LiveRange for argument ";    
+      printValue( (const Value *) *ArgIt); cerr  << endl;
     }
   }
 
@@ -124,9 +124,9 @@ void LiveRangeInfo::constructLiveRanges()
 	    OpI.getMachineOperand().getOperandType();
 
 	  if ( OpTyp == MachineOperand::MO_CCRegister) {
-	    cout << "\n**CC reg found. Is Def=" << OpI.isDef() << " Val:";
+	    cerr << "\n**CC reg found. Is Def=" << OpI.isDef() << " Val:";
 	    printValue( OpI.getMachineOperand().getVRegValue() );
-	    cout << endl;
+	    cerr << endl;
 	  }
 	}
 
@@ -139,8 +139,8 @@ void LiveRangeInfo::constructLiveRanges()
 	  // Only instruction values are accepted for live ranges here
 
 	  if( Def->getValueType() != Value::InstructionVal ) {
-	    cout << "\n**%%Error: Def is not an instruction val. Def=";
-	    printValue( Def ); cout << endl;
+	    cerr << "\n**%%Error: Def is not an instruction val. Def=";
+	    printValue( Def ); cerr << endl;
 	    continue;
 	  }
 
@@ -156,8 +156,8 @@ void LiveRangeInfo::constructLiveRanges()
 	    LiveRangeMap[ Def ] = DefRange; // update the map
 
 	    if( DEBUG_RA > 1) { 	    
-	      cout << "  creating a LR for def: ";    
-	      printValue(Def); cout  << endl;
+	      cerr << "  creating a LR for def: ";    
+	      printValue(Def); cerr  << endl;
 	    }
 
 	    // set the register class of the new live range
@@ -171,7 +171,7 @@ void LiveRangeInfo::constructLiveRanges()
 
 
 	    if(isCC && DEBUG_RA) {
-	      cout  << "\a**created a LR for a CC reg:";
+	      cerr  << "\a**created a LR for a CC reg:";
 	      printValue( OpI.getMachineOperand().getVRegValue() );
 	    }
 
@@ -185,8 +185,8 @@ void LiveRangeInfo::constructLiveRanges()
 	    LiveRangeMap[ Def ] = DefRange; 
 
 	    if( DEBUG_RA > 1) { 
-	      cout << "   added to an existing LR for def: ";  
-	      printValue( Def ); cout  << endl;
+	      cerr << "   added to an existing LR for def: ";  
+	      printValue( Def ); cerr  << endl;
 	    }
 	  }
 
@@ -206,7 +206,7 @@ void LiveRangeInfo::constructLiveRanges()
   suggestRegs4CallRets();
 
   if( DEBUG_RA) 
-    cout << "Initial Live Ranges constructed!" << endl;
+    cerr << "Initial Live Ranges constructed!" << endl;
 
 }
 
@@ -257,7 +257,7 @@ void LiveRangeInfo::coalesceLRs()
 */
 
   if( DEBUG_RA) 
-    cout << endl << "Coalscing LRs ..." << endl;
+    cerr << endl << "Coalscing LRs ..." << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
@@ -274,9 +274,9 @@ void LiveRangeInfo::coalesceLRs()
       const MachineInstr * MInst = *MInstIterator; 
 
       if( DEBUG_RA > 1) {
-	cout << " *Iterating over machine instr ";
+	cerr << " *Iterating over machine instr ";
 	MInst->dump();
-	cout << endl;
+	cerr << endl;
       }
 
 
@@ -298,8 +298,8 @@ void LiveRangeInfo::coalesceLRs()
 
 	      //don't warn about labels
 	      if (!((*UseI)->getType())->isLabelType() && DEBUG_RA) {
-		cout<<" !! Warning: No LR for use "; printValue(*UseI);
-		cout << endl;
+		cerr<<" !! Warning: No LR for use "; printValue(*UseI);
+		cerr << endl;
 	      }
 	      continue;                 // ignore and continue
 	    }
@@ -345,7 +345,7 @@ void LiveRangeInfo::coalesceLRs()
   } // for all BBs
 
   if( DEBUG_RA) 
-    cout << endl << "Coalscing Done!" << endl;
+    cerr << endl << "Coalscing Done!" << endl;
 
 }
 
@@ -359,11 +359,11 @@ void LiveRangeInfo::coalesceLRs()
 void LiveRangeInfo::printLiveRanges()
 {
   LiveRangeMapType::iterator HMI = LiveRangeMap.begin();   // hash map iterator
-  cout << endl << "Printing Live Ranges from Hash Map:" << endl;
+  cerr << endl << "Printing Live Ranges from Hash Map:" << endl;
   for( ; HMI != LiveRangeMap.end() ; HMI ++ ) {
     if( (*HMI).first && (*HMI).second ) {
-      cout <<" "; printValue((*HMI).first);  cout  << "\t: "; 
-      ((*HMI).second)->printSet(); cout << endl;
+      cerr <<" "; printValue((*HMI).first);  cerr  << "\t: "; 
+      ((*HMI).second)->printSet(); cerr << endl;
     }
   }
 }
diff --git a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
index e0b55db..c00bd3d 100644
--- a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
+++ b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
@@ -36,7 +36,7 @@ PhyRegAlloc::PhyRegAlloc(const Method *const M,
 
 void PhyRegAlloc::createIGNodeListsAndIGs()
 {
-  if(DEBUG_RA ) cout << "Creating LR lists ..." << endl;
+  if(DEBUG_RA ) cerr << "Creating LR lists ..." << endl;
 
   // hash map iterator
   LiveRangeMapType::const_iterator HMI = (LRI.getLiveRangeMap())->begin();   
@@ -52,8 +52,8 @@ void PhyRegAlloc::createIGNodeListsAndIGs()
 
 	if( !L) { 
 	  if( DEBUG_RA) {
-	    cout << "\n*?!?Warning: Null liver range found for: ";
-	    printValue( (*HMI).first) ; cout << endl;
+	    cerr << "\n*?!?Warning: Null liver range found for: ";
+	    printValue( (*HMI).first) ; cerr << endl;
 	  }
 	  continue;
 	}
@@ -75,7 +75,7 @@ void PhyRegAlloc::createIGNodeListsAndIGs()
     RegClassList[ rc ]->createInterferenceGraph();
 
   if( DEBUG_RA)
-    cout << "LRLists Created!" << endl;
+    cerr << "LRLists Created!" << endl;
 }
 
 
@@ -105,8 +105,8 @@ void PhyRegAlloc::addInterference(const Value *const Def,
   for( ; LIt != LVSet->end(); ++LIt) {
 
     if( DEBUG_RA > 1) {
-      cout << "< Def="; printValue(Def);     
-      cout << ", Lvar=";  printValue( *LIt); cout  << "> ";
+      cerr << "< Def="; printValue(Def);     
+      cerr << ", Lvar=";  printValue( *LIt); cerr  << "> ";
     }
 
     //  get the live range corresponding to live var
@@ -133,8 +133,8 @@ void PhyRegAlloc::addInterference(const Value *const Def,
     else if(DEBUG_RA > 1)  { 
       // we will not have LRs for values not explicitly allocated in the
       // instruction stream (e.g., constants)
-      cout << " warning: no live range for " ; 
-      printValue( *LIt); cout << endl; }
+      cerr << " warning: no live range for " ; 
+      printValue( *LIt); cerr << endl; }
     
   }
  
@@ -148,7 +148,7 @@ void PhyRegAlloc::addInterference(const Value *const Def,
 void PhyRegAlloc::buildInterferenceGraphs()
 {
 
-  if(DEBUG_RA) cout << "Creating interference graphs ..." << endl;
+  if(DEBUG_RA) cerr << "Creating interference graphs ..." << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
@@ -215,7 +215,7 @@ void PhyRegAlloc::buildInterferenceGraphs()
   addInterferencesForArgs();            // add interference for method args
 
   if( DEBUG_RA)
-    cout << "Interference graphs calculted!" << endl;
+    cerr << "Interference graphs calculted!" << endl;
 
 }
 
@@ -241,8 +241,8 @@ void PhyRegAlloc::addInterferencesForArgs()
     addInterference( *ArgIt, InSet, false );  // add interferences between 
                                               // args and LVars at start
     if( DEBUG_RA > 1) {
-      cout << " - %% adding interference for  argument ";    
-      printValue( (const Value *) *ArgIt); cout  << endl;
+      cerr << " - %% adding interference for  argument ";    
+      printValue( (const Value *) *ArgIt); cerr  << endl;
     }
   }
 }
@@ -326,7 +326,7 @@ void PhyRegAlloc::insertCallerSavingCode(const MachineInstr *MInst,
 	    
 	    PushedRegSet.insert( Reg );
 	    StackOff += 4; // ****TODO: Correct ??????
-	    cout << "Inserted caller saving instr");
+	    cerr << "Inserted caller saving instr");
 	    
 	  } // if not already pushed
 
@@ -378,9 +378,9 @@ void PhyRegAlloc::updateMachineCode()
 
 	  for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
 
-	    cout << "*ADDED instr opcode: ";
-	    cout << TargetInstrDescriptors[(*AdIt)->getOpCode()].opCodeString;
-	    cout << endl;
+	    cerr << "*ADDED instr opcode: ";
+	    cerr << TargetInstrDescriptors[(*AdIt)->getOpCode()].opCodeString;
+	    cerr << endl;
 	    
 	    MInstIterator = MIVec.insert( MInstIterator, *AdIt );
 	    ++MInstIterator;
@@ -409,7 +409,7 @@ void PhyRegAlloc::updateMachineCode()
 	  // delete this condition checking later (must assert if Val is null)
 	  if( !Val) {
             if (DEBUG_RA)
-              cout << "Warning: NULL Value found for operand" << endl;
+              cerr << "Warning: NULL Value found for operand" << endl;
 	    continue;
 	  }
 	  assert( Val && "Value is NULL");   
@@ -421,8 +421,8 @@ void PhyRegAlloc::updateMachineCode()
 	    // nothing to worry if it's a const or a label
 
             if (DEBUG_RA) {
-              cout << "*NO LR for inst opcode: ";
-              cout << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
+              cerr << "*NO LR for inst opcode: ";
+              cerr << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
             }
 
 	    if( Op.getAllocatedRegNum() == -1)
@@ -442,16 +442,16 @@ void PhyRegAlloc::updateMachineCode()
 
 	    //TM.getInstrInfo().isReturn(MInst->getOpCode())
 	    else if(TM.getInstrInfo().isReturn(MInst->getOpCode()) ) {
-	      if (DEBUG_RA) cout << endl << "RETURN found" << endl;
+	      if (DEBUG_RA) cerr << endl << "RETURN found" << endl;
  	      Op.setRegForValue( MRI.getReturnAddressReg() );
 
 	    }
 
 	    if (Val->getValueType() == Value::InstructionVal)
 	    {
-	      cout << "!Warning: No LiveRange for: ";
-	      printValue( Val); cout << " Type: " << Val->getValueType();
-	      cout << " RegVal=" <<  Op.getAllocatedRegNum() << endl;
+	      cerr << "!Warning: No LiveRange for: ";
+	      printValue( Val); cerr << " Type: " << Val->getValueType();
+	      cerr << " RegVal=" <<  Op.getAllocatedRegNum() << endl;
 	    }
 
 #endif
@@ -483,14 +483,14 @@ void PhyRegAlloc::updateMachineCode()
 void PhyRegAlloc::printMachineCode()
 {
 
-  cout << endl << ";************** Method ";
-  cout << Meth->getName() << " *****************" << endl;
+  cerr << endl << ";************** Method ";
+  cerr << Meth->getName() << " *****************" << endl;
 
   Method::const_iterator BBI = Meth->begin();  // random iterator for BBs   
 
   for( ; BBI != Meth->end(); ++BBI) {          // traverse BBs in random order
 
-    cout << endl ; printLabel( *BBI); cout << ": ";
+    cerr << endl ; printLabel( *BBI); cerr << ": ";
 
     // get the iterator for machine instructions
     MachineCodeForBasicBlock& MIVec = (*BBI)->getMachineInstrVec();
@@ -502,8 +502,8 @@ void PhyRegAlloc::printMachineCode()
       MachineInstr *const MInst = *MInstIterator; 
 
 
-      cout << endl << "\t";
-      cout << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
+      cerr << endl << "\t";
+      cerr << TargetInstrDescriptors[MInst->getOpCode()].opCodeString;
       
 
       //for(MachineInstr::val_op_const_iterator OpI(MInst);!OpI.done();++OpI) {
@@ -519,14 +519,14 @@ void PhyRegAlloc::printMachineCode()
 	  const Value *const Val = Op.getVRegValue () ;
 	  // ****this code is temporary till NULL Values are fixed
 	  if( ! Val ) {
-	    cout << "\t<*NULL*>";
+	    cerr << "\t<*NULL*>";
 	    continue;
 	  }
 
 	  // if a label or a constant
 	  if( (Val->getValueType() == Value::BasicBlockVal)  ) {
 
-	    cout << "\t"; printLabel(	Op.getVRegValue	() );
+	    cerr << "\t"; printLabel(	Op.getVRegValue	() );
 	  }
 	  else {
 	    // else it must be a register value
@@ -534,27 +534,27 @@ void PhyRegAlloc::printMachineCode()
 
 	    //if( RegNum != 1000)
 
-	      cout << "\t" << "%" << MRI.getUnifiedRegName( RegNum );
-	    // else cout << "\t<*NoReg*>";
+	      cerr << "\t" << "%" << MRI.getUnifiedRegName( RegNum );
+	    // else cerr << "\t<*NoReg*>";
 
 	  }
 
 	} 
 	else if(Op.getOperandType() ==  MachineOperand::MO_MachineRegister) {
-	  cout << "\t" << "%" << MRI.getUnifiedRegName(Op.getMachineRegNum());
+	  cerr << "\t" << "%" << MRI.getUnifiedRegName(Op.getMachineRegNum());
 	}
 
 	else 
-	  cout << "\t" << Op;      // use dump field
+	  cerr << "\t" << Op;      // use dump field
       }
 
     }
 
-    cout << endl;
+    cerr << endl;
 
   }
 
-  cout << endl;
+  cerr << endl;
 }
 
 
@@ -617,9 +617,9 @@ void PhyRegAlloc::colorIncomingArgs()
 void PhyRegAlloc::printLabel(const Value *const Val)
 {
   if( Val->hasName() )
-    cout  << Val->getName();
+    cerr  << Val->getName();
   else
-    cout << "Label" <<  Val;
+    cerr << "Label" <<  Val;
 }
 
 
diff --git a/lib/Target/SparcV9/RegAlloc/RegClass.cpp b/lib/Target/SparcV9/RegAlloc/RegClass.cpp
index 9c3e08c..a37d82d 100644
--- a/lib/Target/SparcV9/RegAlloc/RegClass.cpp
+++ b/lib/Target/SparcV9/RegAlloc/RegClass.cpp
@@ -9,7 +9,7 @@ RegClass::RegClass(const Method *const M,
                      IG(this), IGNodeStack(), ReservedColorList(RCL)
 {
   if( DEBUG_RA)
-    cout << "Created Reg Class: " << RegClassID << endl;
+    cerr << "Created Reg Class: " << RegClassID << endl;
 
   // This constructor inits IG. The actual matrix is created by a call to 
   // createInterferenceGraph() above.
@@ -21,7 +21,7 @@ RegClass::RegClass(const Method *const M,
 
 void RegClass::colorAllRegs()
 {
-  if(DEBUG_RA) cout << "Coloring IGs ..." << endl;
+  if(DEBUG_RA) cerr << "Coloring IGs ..." << endl;
 
   //preColorIGNodes();                    // pre-color IGNodes
   pushAllIGNodes();                     // push all IG Nodes
@@ -55,9 +55,9 @@ void RegClass::pushAllIGNodes()
   bool PushedAll  = pushUnconstrainedIGNodes(); 
 
   if( DEBUG_RA) {
-    cout << " Puhsed all-unconstrained IGNodes. ";
-    if( PushedAll ) cout << " No constrained nodes left.";
-    cout << endl;
+    cerr << " Puhsed all-unconstrained IGNodes. ";
+    if( PushedAll ) cerr << " No constrained nodes left.";
+    cerr << endl;
   }
 
   if( PushedAll )                       // if NO constrained nodes left
@@ -112,8 +112,8 @@ bool  RegClass::pushUnconstrainedIGNodes()
       IGNode->pushOnStack();            // set OnStack and dec deg of neighs
 
       if (DEBUG_RA > 1) {
-	cout << " pushed un-constrained IGNode " << IGNode->getIndex() ;
-	cout << " on to stack" << endl;
+	cerr << " pushed un-constrained IGNode " << IGNode->getIndex() ;
+	cerr << " on to stack" << endl;
       }
     }
     else pushedall = false;             // we didn't push all live ranges
@@ -170,16 +170,16 @@ void RegClass::colorIGNode(IGNode *const Node)
   }
   else {
     if( DEBUG_RA ) {
-      cout << " Node " << Node->getIndex();
-      cout << " already colored with color " << Node->getColor() << endl;
+      cerr << " Node " << Node->getIndex();
+      cerr << " already colored with color " << Node->getColor() << endl;
     }
   }
 
 
   if( !Node->hasColor() ) {
     if( DEBUG_RA ) {
-      cout << " Node " << Node->getIndex();
-      cout << " - could not find a color (needs spilling)" << endl;
+      cerr << " Node " << Node->getIndex();
+      cerr << " - could not find a color (needs spilling)" << endl;
     }
   }
 
diff --git a/lib/Target/SparcV9/SparcV9Internals.h b/lib/Target/SparcV9/SparcV9Internals.h
index ad0f17f..812378c 100644
--- a/lib/Target/SparcV9/SparcV9Internals.h
+++ b/lib/Target/SparcV9/SparcV9Internals.h
@@ -269,17 +269,14 @@ class UltraSparcRegInfo : public MachineRegInfo
     else if( ty <= Type::DoubleTyID)
       res = FloatRegClassID;           // sparc float reg class
     else { 
-      cout << "TypeID: " << ty << endl;
+      cerr << "TypeID: " << ty << endl;
       assert(0 && "Cannot resolve register class for type");
-
     }
 
     if(isCCReg)
       return res + 2;      // corresponidng condition code regiser 
-
     else 
       return res;
-
   }
 
   // returns the register tha contains always zero
diff --git a/lib/Target/SparcV9/SparcV9RegClassInfo.cpp b/lib/Target/SparcV9/SparcV9RegClassInfo.cpp
index 883ed52..ff01f35 100644
--- a/lib/Target/SparcV9/SparcV9RegClassInfo.cpp
+++ b/lib/Target/SparcV9/SparcV9RegClassInfo.cpp
@@ -43,8 +43,8 @@ void SparcIntRegClass::colorIGNode(IGNode * Node, bool IsColorUsedArr[]) const
       return;
     }
     else {                              // can't allocate the suggested col
-      cout << " Coud NOT allocate the suggested color for LR ";
-      LR->printSet(); cout << endl;
+      cerr << " Could NOT allocate the suggested color for LR ";
+      LR->printSet(); cerr << endl;
     }
   }
 
@@ -193,8 +193,8 @@ void SparcFloatRegClass::colorIGNode(IGNode * Node,bool IsColorUsedArr[]) const
       return;
     }
     else {                              // can't allocate the suggested col
-      cout << " Coud NOT allocate the suggested color for LR ";
-      LR->printSet(); cout << endl;
+      cerr << " Could NOT allocate the suggested color for LR ";
+      LR->printSet(); cerr << endl;
     }
   }
 
diff --git a/lib/Target/SparcV9/SparcV9RegInfo.cpp b/lib/Target/SparcV9/SparcV9RegInfo.cpp
index 15b1384..9d49f9c 100644
--- a/lib/Target/SparcV9/SparcV9RegInfo.cpp
+++ b/lib/Target/SparcV9/SparcV9RegInfo.cpp
@@ -102,7 +102,7 @@ void UltraSparcRegInfo::suggestRegs4MethodArgs(const Method *const Meth,
   
       else {
 	// Do NOTHING as this will be colored as a normal value.
-	if (DEBUG_RA) cout << " Int Regr not suggested for method arg\n";
+	if (DEBUG_RA) cerr << " Int Regr not suggested for method arg\n";
       }
      
     }
@@ -288,8 +288,8 @@ void UltraSparcRegInfo::suggestRegs4CallArgs(const MachineInstr *const CallMI,
     // must be defined before
     if( !LR ) {          
       if( DEBUG_RA) {
-	cout << " ERROR: In call instr, no LR for arg:  " ;
-	printValue(CallArg); cout << endl;
+	cerr << " ERROR: In call instr, no LR for arg:  " ;
+	printValue(CallArg); cerr << endl;
       }
       assert(0 && "NO LR for call arg");  
       // continue;
@@ -305,7 +305,7 @@ void UltraSparcRegInfo::suggestRegs4CallArgs(const MachineInstr *const CallMI,
 
       else if (DEBUG_RA) 
 	// Do NOTHING as this will be colored as a normal value.
-	cout << " Regr not suggested for int call arg" << endl;
+	cerr << " Regr not suggested for int call arg" << endl;
       
     }
     else if( RegType == FPSingleRegType &&  (argNo*2 +1)< NumOfFloatArgRegs) 
@@ -357,9 +357,9 @@ void UltraSparcRegInfo::colorCallArgs(const MachineInstr *const CallMI,
       LiveRange * RetValLR = LRI.getLiveRangeForValue( RetVal );
 
       if( !RetValLR ) {
-	cout << "\nNo LR for:";
+	cerr << "\nNo LR for:";
 	printValue( RetVal );
-	cout << endl;
+	cerr << endl;
 	assert( RetValLR && "ERR:No LR for non-void return value");
 	//return;
       }
@@ -449,8 +449,8 @@ void UltraSparcRegInfo::colorCallArgs(const MachineInstr *const CallMI,
     // must be defined before
     if( !LR ) {          
       if( DEBUG_RA) {
-	cout << " ERROR: In call instr, no LR for arg:  " ;
-	printValue(CallArg); cout << endl;
+	cerr << " ERROR: In call instr, no LR for arg:  " ;
+	printValue(CallArg); cerr << endl;
       }
       assert(0 && "NO LR for call arg");  
       // continue;
@@ -516,9 +516,9 @@ void UltraSparcRegInfo::suggestReg4RetValue(const MachineInstr *const RetMI,
     LiveRange *const LR = LRI.getLiveRangeForValue( RetVal ); 
 
     if( !LR ) {
-     cout << "\nNo LR for:";
+     cerr << "\nNo LR for:";
      printValue( RetVal );
-     cout << endl;
+     cerr << endl;
      assert( LR && "No LR for return value of non-void method");
      //return;
    }
@@ -554,9 +554,9 @@ void UltraSparcRegInfo::colorRetValue(const  MachineInstr *const RetMI,
     LiveRange *const LR = LRI.getLiveRangeForValue( RetVal ); 
 
     if( ! LR ) {
-	cout << "\nNo LR for:";
+	cerr << "\nNo LR for:";
 	printValue( RetVal );
-	cout << endl;
+	cerr << endl;
 	// assert( LR && "No LR for return value of non-void method");
 	return;
    }
@@ -684,7 +684,7 @@ MachineInstr * UltraSparcRegInfo::cpValue2RegMI(Value * Val,
     break;
 
   default:
-    cout << "Value Type: " << Val->getValueType() << endl;
+    cerr << "Value Type: " << Val->getValueType() << endl;
     assert(0 && "Unknown val type - Only constants/globals/labels are valid");
   }
 
@@ -736,33 +736,26 @@ void UltraSparcRegInfo::printReg(const LiveRange *const LR) {
 
   unsigned RegClassID = (LR->getRegClass())->getID();
 
-  cout << " *Node " << (LR->getUserIGNode())->getIndex();
+  cerr << " *Node " << (LR->getUserIGNode())->getIndex();
 
   if( ! LR->hasColor() ) {
-    cout << " - could not find a color" << endl;
+    cerr << " - could not find a color" << endl;
     return;
   }
   
   // if a color is found
 
-  cout << " colored with color "<< LR->getColor();
+  cerr << " colored with color "<< LR->getColor();
 
   if( RegClassID == IntRegClassID ) {
 
-    cout<< " [" << SparcIntRegOrder::getRegName(LR->getColor()) ;
-    cout << "]" << endl;
+    cerr<< " [" << SparcIntRegOrder::getRegName(LR->getColor()) ;
+    cerr << "]" << endl;
   }
   else if ( RegClassID == FloatRegClassID) {
-    cout << "[" << SparcFloatRegOrder::getRegName(LR->getColor());
+    cerr << "[" << SparcFloatRegOrder::getRegName(LR->getColor());
     if( LR->getTypeID() == Type::DoubleTyID )
-      cout << "+" << SparcFloatRegOrder::getRegName(LR->getColor()+1);
-    cout << "]" << endl;
+      cerr << "+" << SparcFloatRegOrder::getRegName(LR->getColor()+1);
+    cerr << "]" << endl;
   }
-
-
 }
-
-
-
-
-
diff --git a/lib/Target/SparcV9/SparcV9TargetMachine.cpp b/lib/Target/SparcV9/SparcV9TargetMachine.cpp
index e8835ae..9de9bc9 100644
--- a/lib/Target/SparcV9/SparcV9TargetMachine.cpp
+++ b/lib/Target/SparcV9/SparcV9TargetMachine.cpp
@@ -47,8 +47,8 @@ void AllocateRegisters(Method *M, TargetMachine &TM)
     return;
     
   if( DEBUG_RA ) {
-    cout << endl << "******************** Method "<< (M)->getName();
-    cout <<        " ********************" <<endl;
+    cerr << endl << "******************** Method "<< (M)->getName();
+    cerr <<        " ********************" <<endl;
   }
     
   MethodLiveVarInfo LVI(M );   // Analyze live varaibles
@@ -59,7 +59,7 @@ void AllocateRegisters(Method *M, TargetMachine &TM)
   PRA.allocateRegisters();
     
 
-  if( DEBUG_RA )  cout << endl << "Register allocation complete!" << endl;
+  if( DEBUG_RA )  cerr << endl << "Register allocation complete!" << endl;
 
 }