diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index 210f3b1..312e6c3 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -259,7 +259,8 @@
 
   /// findTiedToSrcOperand - Returns the operand that is tied to the specified
   /// dest operand. Returns -1 if there isn't one.
-  int findTiedToSrcOperand(MachineOpCode Opcode, unsigned OpNum) const;
+  int findTiedToSrcOperand(const TargetInstrDescriptor *TID,
+                           unsigned OpNum) const;
 
   /// getDWARF_LABELOpcode - Return the opcode of the target's DWARF_LABEL
   /// instruction if it has one.  This is used by codegen passes that update
diff --git a/lib/Target/TargetInstrInfo.cpp b/lib/Target/TargetInstrInfo.cpp
index c29b1c5..0e79baa 100644
--- a/lib/Target/TargetInstrInfo.cpp
+++ b/lib/Target/TargetInstrInfo.cpp
@@ -27,13 +27,12 @@
 
 /// findTiedToSrcOperand - Returns the operand that is tied to the specified
 /// dest operand. Returns -1 if there isn't one.
-int
-TargetInstrInfo::findTiedToSrcOperand(MachineOpCode Opc, unsigned OpNum) const {
-  for (unsigned i = 0, e = getNumOperands(Opc); i != e; ++i) {
+int TargetInstrInfo::findTiedToSrcOperand(const TargetInstrDescriptor *TID,
+                                          unsigned OpNum) const {
+  for (unsigned i = 0, e = TID->numOperands; i != e; ++i) {
     if (i == OpNum)
       continue;
-    int ti = getOperandConstraint(Opc, i, TOI::TIED_TO);
-    if (ti == (int)OpNum)
+    if (TID->getOperandConstraint(i, TOI::TIED_TO) == (int)OpNum)
       return i;
   }
   return -1;