From fc4e8a3e8b4aa9a8aaa9cb8ebc44c7fda465648b Mon Sep 17 00:00:00 2001
From: Yang Fan <nullptr.cpp@gmail.com>
Date: Thu, 28 Jan 2021 15:57:54 +0800
Subject: [PATCH] [NFC][IR][AsmWriter] Fix Wreturn-type gcc warning

GCC warning:
```
/llvm-project/llvm/lib/IR/AsmWriter.cpp:3175:1: warning: control reaches end of non-void function [-Wreturn-type]
 3175 | }
      | ^
```
---
 llvm/lib/IR/AsmWriter.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 777c240f01c8..477ed20d868a 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -3172,6 +3172,7 @@ static const char *getVisibilityName(GlobalValue::VisibilityTypes Vis) {
   case GlobalValue::ProtectedVisibility:
     return "protected";
   }
+  llvm_unreachable("invalid visibility");
 }
 
 void AssemblyWriter::printFunctionSummary(const FunctionSummary *FS) {