diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h
index 7accaf5789f..8de27950ee1 100644
--- a/include/llvm/Target/TargetInstrInfo.h
+++ b/include/llvm/Target/TargetInstrInfo.h
@@ -130,6 +130,7 @@ class TargetInstrDescriptor {
 public:
   MachineOpCode   Opcode;        // The opcode.
   unsigned short  numOperands;   // Num of args (may be more if variable_ops).
+  unsigned short  numDefs;       // Num of args that are definitions.
   const char *    Name;          // Assembly language mnemonic for the opcode.
   InstrSchedClass schedClass;    // enum  identifying instr sched class
   unsigned        Flags;         // flags identifying machine instr class
diff --git a/utils/TableGen/InstrInfoEmitter.cpp b/utils/TableGen/InstrInfoEmitter.cpp
index 9a5dd2bda71..ca8d30f0c05 100644
--- a/utils/TableGen/InstrInfoEmitter.cpp
+++ b/utils/TableGen/InstrInfoEmitter.cpp
@@ -203,7 +203,8 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
     MinOperands = 0;
   
   OS << "  { ";
-  OS << Num << ",\t" << MinOperands << ",\t\"";
+  OS << Num << ",\t" << MinOperands << ",\t"
+     << Inst.NumDefs << ",\t\"";
 
   if (Inst.Name.empty())
     OS << Inst.TheDef->getName();