https://github.com/4vtomat updated 
https://github.com/llvm/llvm-project/pull/99763

>From 1ca71c8ed8b9f0cee9887ad81ccccc03fd6a502f Mon Sep 17 00:00:00 2001
From: Brandon Wu <brandon...@sifive.com>
Date: Sat, 20 Jul 2024 07:27:53 -0700
Subject: [PATCH] [ASTContext] Make the end of the switch case unreachable in
 `encodeTypeForFunctionPointerAuth`

This prevent the warning from compiler.
---
 clang/lib/AST/ASTContext.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 90bcbea072e39..b964d01805f48 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -3363,6 +3363,7 @@ static void encodeTypeForFunctionPointerAuth(const 
ASTContext &Ctx,
 #include "clang/Basic/RISCVVTypes.def"
       llvm_unreachable("not yet implemented");
     }
+    llvm_unreachable("should never get here");
   }
   case Type::Record: {
     const RecordDecl *RD = T->getAs<RecordType>()->getDecl();

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