1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index 6f79b4bcc5c..04ad6d2c791 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -57,6 +57,15 @@ template <typename T> class ArrayRef;
         assert(isTied());
         return OtherTiedOperand;
       }
+
+      bool operator==(const ConstraintInfo &RHS) const {
+        if (Kind != RHS.Kind)
+          return false;
+        if (Kind == Tied && OtherTiedOperand != RHS.OtherTiedOperand)
+          return false;
+        return true;
+      }
+      bool operator!=(const ConstraintInfo &RHS) const { return *this != RHS; }
     };
 
     /// OperandInfo - The information we keep track of for each operand in the