diff --git a/llvm/include/llvm/Support/RISCVISAInfo.h b/llvm/include/llvm/Support/RISCVISAInfo.h
--- a/llvm/include/llvm/Support/RISCVISAInfo.h
+++ b/llvm/include/llvm/Support/RISCVISAInfo.h
@@ -92,6 +92,9 @@
   void updateFLen();
   void updateMinVLen();
   void updateMaxELen();
+
+  static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
+  postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo);
 };
 
 } // namespace llvm
diff --git a/llvm/lib/Support/RISCVISAInfo.cpp b/llvm/lib/Support/RISCVISAInfo.cpp
--- a/llvm/lib/Support/RISCVISAInfo.cpp
+++ b/llvm/lib/Support/RISCVISAInfo.cpp
@@ -461,15 +461,7 @@
       ISAInfo->Exts.erase(ExtName.str());
   }
 
-  ISAInfo->updateImplication();
-  ISAInfo->updateFLen();
-  ISAInfo->updateMinVLen();
-  ISAInfo->updateMaxELen();
-
-  if (Error Result = ISAInfo->checkDependency())
-    return std::move(Result);
-
-  return std::move(ISAInfo);
+  return RISCVISAInfo::postProcessAndChecking(std::move(ISAInfo));
 }
 
 llvm::Expected<std::unique_ptr<RISCVISAInfo>>
@@ -686,15 +678,7 @@
     }
   }
 
-  ISAInfo->updateImplication();
-  ISAInfo->updateFLen();
-  ISAInfo->updateMinVLen();
-  ISAInfo->updateMaxELen();
-
-  if (Error Result = ISAInfo->checkDependency())
-    return std::move(Result);
-
-  return std::move(ISAInfo);
+  return RISCVISAInfo::postProcessAndChecking(std::move(ISAInfo));
 }
 
 Error RISCVISAInfo::checkDependency() {
@@ -919,3 +903,15 @@
   }
   return FeatureVector;
 }
+
+llvm::Expected<std::unique_ptr<RISCVISAInfo>>
+RISCVISAInfo::postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo) {
+  ISAInfo->updateImplication();
+  ISAInfo->updateFLen();
+  ISAInfo->updateMinVLen();
+  ISAInfo->updateMaxELen();
+
+  if (Error Result = ISAInfo->checkDependency())
+    return std::move(Result);
+  return std::move(ISAInfo);
+}