[clang] [clang][AST][NFC] Add '[[fallthrough]]' to cases fall through (PR #85921)

[Ben Shi via cfe-commits]

https://github.com/benshi001 created 
https://github.com/llvm/llvm-project/pull/85921

None

>From 144119d57d181fb16e27a5c7d869422a39185978 Mon Sep 17 00:00:00 2001
From: Ben Shi <benn...@tencent.com>
Date: Wed, 20 Mar 2024 19:36:50 +0800
Subject: [PATCH] [clang][AST][NFC] Add '[[fallthrough]];' to cases fall
 through

---
 clang/lib/CodeGen/CGStmt.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index 8898e3f22a7df6..7d7744bafb110e 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -160,7 +160,7 @@ void CodeGenFunction::EmitStmt(const Stmt *S, 
ArrayRef<const Attr *> Attrs) {
   case Stmt::ReturnStmtClass:  EmitReturnStmt(cast<ReturnStmt>(*S));      
break;
 
   case Stmt::SwitchStmtClass:  EmitSwitchStmt(cast<SwitchStmt>(*S));      
break;
-  case Stmt::GCCAsmStmtClass:  // Intentional fall-through.
+  case Stmt::GCCAsmStmtClass:  [[fallthrough]];
   case Stmt::MSAsmStmtClass:   EmitAsmStmt(cast<AsmStmt>(*S));            
break;
   case Stmt::CoroutineBodyStmtClass:
     EmitCoroutineBody(cast<CoroutineBodyStmt>(*S));

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