diff --git a/clang/include/clang/Support/RISCVVIntrinsicUtils.h b/clang/include/clang/Support/RISCVVIntrinsicUtils.h
--- a/clang/include/clang/Support/RISCVVIntrinsicUtils.h
+++ b/clang/include/clang/Support/RISCVVIntrinsicUtils.h
@@ -341,9 +341,9 @@
   // Return the type string for a BUILTIN() macro in Builtins.def.
   std::string getBuiltinTypeStr() const;
 
-  static std::string getSuffixStr(
-      BasicType Type, int Log2LMUL,
-      const llvm::SmallVector<PrototypeDescriptor> &PrototypeDescriptors);
+  static std::string
+  getSuffixStr(BasicType Type, int Log2LMUL,
+               const llvm::ArrayRef<PrototypeDescriptor> &PrototypeDescriptors);
 };
 
 } // end namespace RISCV
diff --git a/clang/lib/Support/RISCVVIntrinsicUtils.cpp b/clang/lib/Support/RISCVVIntrinsicUtils.cpp
--- a/clang/lib/Support/RISCVVIntrinsicUtils.cpp
+++ b/clang/lib/Support/RISCVVIntrinsicUtils.cpp
@@ -928,7 +928,7 @@
 
 std::string RVVIntrinsic::getSuffixStr(
     BasicType Type, int Log2LMUL,
-    const llvm::SmallVector<PrototypeDescriptor> &PrototypeDescriptors) {
+    const llvm::ArrayRef<PrototypeDescriptor> &PrototypeDescriptors) {
   SmallVector<std::string> SuffixStrs;
   for (auto PD : PrototypeDescriptors) {
     auto T = RVVType::computeType(Type, Log2LMUL, PD);