Index: clang/include/clang/Support/RISCVVIntrinsicUtils.h
===================================================================
--- clang/include/clang/Support/RISCVVIntrinsicUtils.h
+++ clang/include/clang/Support/RISCVVIntrinsicUtils.h
@@ -463,8 +463,9 @@
   RVV_REQ_RV64 = 1 << 0,
   RVV_REQ_FullMultiply = 1 << 1,
   RVV_REQ_Xsfvcp = 1 << 2,
+  RVV_REQ_Xtheadvdot = 1 << 3,
 
-  LLVM_MARK_AS_BITMASK_ENUM(RVV_REQ_Xsfvcp)
+  LLVM_MARK_AS_BITMASK_ENUM(RVV_REQ_Xtheadvdot)
 };
 
 // Raw RVV intrinsic info, used to expand later.
Index: clang/utils/TableGen/RISCVVEmitter.cpp
===================================================================
--- clang/utils/TableGen/RISCVVEmitter.cpp
+++ clang/utils/TableGen/RISCVVEmitter.cpp
@@ -634,6 +634,7 @@
                                   .Case("RV64", RVV_REQ_RV64)
                                   .Case("FullMultiply", RVV_REQ_FullMultiply)
                                   .Case("Xsfvcp", RVV_REQ_Xsfvcp)
+                                  .Case("Xtheadvdot", RVV_REQ_Xtheadvdot)
                                   .Default(RVV_REQ_None);
       assert(RequireExt != RVV_REQ_None && "Unrecognized required feature?");
       SR.RequiredExtensions |= RequireExt;