diff --git a/llvm/utils/TableGen/CodeGenMapTable.cpp b/llvm/utils/TableGen/CodeGenMapTable.cpp
index f66dd08..76d0ae2 100644
--- a/llvm/utils/TableGen/CodeGenMapTable.cpp
+++ b/llvm/utils/TableGen/CodeGenMapTable.cpp
@@ -355,7 +355,7 @@
 
 unsigned MapTableEmitter::emitBinSearchTable(raw_ostream &OS) {
 
-  const std::vector<const CodeGenInstruction*> &NumberedInstructions =
+  ArrayRef<const CodeGenInstruction*> NumberedInstructions =
                                             Target.getInstructionsByEnumValue();
   std::string TargetName = Target.getName();
   const std::vector<ListInit*> &ValueCols = InstrMapDesc.getValueCols();