diff --git a/utils/TableGen/Record.cpp b/utils/TableGen/Record.cpp
index 41dbdd6140a..9c2d381de6b 100644
--- a/utils/TableGen/Record.cpp
+++ b/utils/TableGen/Record.cpp
@@ -303,6 +303,7 @@ Init *IntInit::getBinaryOp(BinaryOp Op, Init *RHS) {
 
   int NewValue;
   switch (Op) {
+  default: assert(0 && "Unknown binop");
   case SHL: NewValue = Value << RHSi->getValue(); break;
   case SRA: NewValue = Value >> RHSi->getValue(); break;
   case SRL: NewValue = (unsigned)Value >> (unsigned)RHSi->getValue(); break;