diff --git a/include/llvm/CodeGen/MachineOperand.h b/include/llvm/CodeGen/MachineOperand.h
index ba538d7..64fa1d1 100644
--- a/include/llvm/CodeGen/MachineOperand.h
+++ b/include/llvm/CodeGen/MachineOperand.h
@@ -47,7 +47,14 @@
 private:
   /// OpKind - Specify what kind of operand this is.  This discriminates the
   /// union.
-  MachineOperandType OpKind : 8;
+  unsigned char OpKind; // MachineOperandType
+  
+  /// SubReg - Subregister number, only valid for MO_Register.  A value of 0
+  /// indicates the MO_Register has no subReg.
+  unsigned char SubReg;
+  
+  /// TargetFlags - This is a set of target-specific operand flags.
+  unsigned char TargetFlags;
   
   /// IsDef/IsImp/IsKill/IsDead flags - These are only valid for MO_Register
   /// operands.
@@ -73,10 +80,6 @@
   /// model the GCC inline asm '&' constraint modifier.
   bool IsEarlyClobber : 1;
 
-  /// SubReg - Subregister number, only valid for MO_Register.  A value of 0
-  /// indicates the MO_Register has no subReg.
-  unsigned char SubReg;
-  
   /// ParentMI - This is the instruction that this operand is embedded into. 
   /// This is valid for all operand types, when the operand is in an instr.
   MachineInstr *ParentMI;
@@ -105,7 +108,9 @@
     } OffsetedInfo;
   } Contents;
   
-  explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {}
+  explicit MachineOperand(MachineOperandType K) : OpKind(K), ParentMI(0) {
+    TargetFlags = 0;
+  }
 public:
   MachineOperand(const MachineOperand &M) {
     *this = M;
@@ -115,7 +120,12 @@
   
   /// getType - Returns the MachineOperandType for this operand.
   ///
-  MachineOperandType getType() const { return OpKind; }
+  MachineOperandType getType() const { return (MachineOperandType)OpKind; }
+  
+  unsigned char getTargetFlags() const { return TargetFlags; }
+  void setTargetFlags(unsigned char F) { TargetFlags = F; }
+  void addTargetFlag(unsigned char F) { TargetFlags |= F; }
+  
 
   /// getParent - Return the instruction that this operand belongs to.
   ///
@@ -404,6 +414,7 @@
     SubReg   = MO.SubReg;
     ParentMI = MO.ParentMI;
     Contents = MO.Contents;
+    TargetFlags = MO.TargetFlags;
     return *this;
   }
 
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 8dad76b..c977508 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -150,7 +150,9 @@
 /// isIdenticalTo - Return true if this operand is identical to the specified
 /// operand.
 bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
-  if (getType() != Other.getType()) return false;
+  if (getType() != Other.getType() ||
+      getTargetFlags() != Other.getTargetFlags())
+    return false;
   
   switch (getType()) {
   default: assert(0 && "Unrecognized operand type");
@@ -205,70 +207,72 @@
     }
 
     if (getSubReg() != 0) {
-      OS << ":" << getSubReg();
+      OS << ':' << getSubReg();
     }
 
     if (isDef() || isKill() || isDead() || isImplicit() || isEarlyClobber()) {
-      OS << "<";
+      OS << '<';
       bool NeedComma = false;
       if (isImplicit()) {
-        if (NeedComma) OS << ",";
+        if (NeedComma) OS << ',';
         OS << (isDef() ? "imp-def" : "imp-use");
         NeedComma = true;
       } else if (isDef()) {
-        if (NeedComma) OS << ",";
+        if (NeedComma) OS << ',';
         if (isEarlyClobber())
           OS << "earlyclobber,";
         OS << "def";
         NeedComma = true;
       }
       if (isKill() || isDead()) {
-        if (NeedComma) OS << ",";
+        if (NeedComma) OS << ',';
         if (isKill())  OS << "kill";
         if (isDead())  OS << "dead";
       }
-      OS << ">";
+      OS << '>';
     }
     break;
   case MachineOperand::MO_Immediate:
     OS << getImm();
     break;
   case MachineOperand::MO_FPImmediate:
-    if (getFPImm()->getType() == Type::FloatTy) {
+    if (getFPImm()->getType() == Type::FloatTy)
       OS << getFPImm()->getValueAPF().convertToFloat();
-    } else {
+    else
       OS << getFPImm()->getValueAPF().convertToDouble();
-    }
     break;
   case MachineOperand::MO_MachineBasicBlock:
     OS << "mbb<"
        << ((Value*)getMBB()->getBasicBlock())->getName()
-       << "," << (void*)getMBB() << ">";
+       << "," << (void*)getMBB() << '>';
     break;
   case MachineOperand::MO_FrameIndex:
-    OS << "<fi#" << getIndex() << ">";
+    OS << "<fi#" << getIndex() << '>';
     break;
   case MachineOperand::MO_ConstantPoolIndex:
     OS << "<cp#" << getIndex();
     if (getOffset()) OS << "+" << getOffset();
-    OS << ">";
+    OS << '>';
     break;
   case MachineOperand::MO_JumpTableIndex:
-    OS << "<jt#" << getIndex() << ">";
+    OS << "<jt#" << getIndex() << '>';
     break;
   case MachineOperand::MO_GlobalAddress:
     OS << "<ga:" << ((Value*)getGlobal())->getName();
     if (getOffset()) OS << "+" << getOffset();
-    OS << ">";
+    OS << '>';
     break;
   case MachineOperand::MO_ExternalSymbol:
     OS << "<es:" << getSymbolName();
     if (getOffset()) OS << "+" << getOffset();
-    OS << ">";
+    OS << '>';
     break;
   default:
     assert(0 && "Unrecognized operand type");
   }
+  
+  if (unsigned TF = getTargetFlags())
+    OS << "[TF=" << TF << ']';
 }
 
 //===----------------------------------------------------------------------===//
@@ -1104,13 +1108,13 @@
 
   // If not found, this means an alias of one of the operands is dead. Add a
   // new implicit operand if required.
-  if (!Found && AddIfNotFound) {
-    addOperand(MachineOperand::CreateReg(IncomingReg,
-                                         true  /*IsDef*/,
-                                         true  /*IsImp*/,
-                                         false /*IsKill*/,
-                                         true  /*IsDead*/));
-    return true;
-  }
-  return Found;
+  if (Found || !AddIfNotFound)
+    return Found;
+    
+  addOperand(MachineOperand::CreateReg(IncomingReg,
+                                       true  /*IsDef*/,
+                                       true  /*IsImp*/,
+                                       false /*IsKill*/,
+                                       true  /*IsDead*/));
+  return true;
 }