diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -56,6 +56,7 @@
   std::set<std::string> OperandNames;
   unsigned e = InDI->getNumArgs() + OutDI->getNumArgs();
   OperandList.reserve(e);
+  bool VariadicOuts = false;
   for (unsigned i = 0; i != e; ++i){
     Init *ArgInit;
     StringRef ArgName;
@@ -109,6 +110,8 @@
       else if (Rec->isSubClassOf("OptionalDefOperand"))
         hasOptionalDef = true;
     } else if (Rec->getName() == "variable_ops") {
+      if (i < NumDefs)
+        VariadicOuts = true;
       isVariadic = true;
       continue;
     } else if (Rec->isSubClassOf("RegisterClass")) {