From 53061c842d287b73500c47141f0059792631ed89 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Mon, 6 Oct 2008 20:56:19 +0000
Subject: [PATCH] Use DeclStmt::decl_iterator to walk a group of Decl*'s
 instead of using the ScopedDecl chain.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57206 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/AST/CFG.cpp | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/lib/AST/CFG.cpp b/lib/AST/CFG.cpp
index 8e9c3fb10b..2eea6492cd 100644
--- a/lib/AST/CFG.cpp
+++ b/lib/AST/CFG.cpp
@@ -69,11 +69,10 @@ public:
     return Ex ? &Ex + 1 : 0;
   }  
   virtual decl_iterator decl_begin() {
-    return getDecl();
+    return TheDecl;
   }  
   virtual decl_iterator decl_end() {
-    ScopedDecl* D = getDecl();
-    return D ? D->getNextDeclarator() : 0;
+    return TheDecl ? TheDecl->getNextDeclarator() : 0;
   }
 };
   
@@ -379,17 +378,22 @@ CFGBlock* CFGBuilder::WalkAST(Stmt* Terminator, bool AlwaysAddStmt = false) {
     }
 
     case Stmt::DeclStmtClass: {
-      ScopedDecl* D = cast<DeclStmt>(Terminator)->getDecl();
-      
-      if (!D->getNextDeclarator()) {      
+      DeclStmt *DS = cast<DeclStmt>(Terminator);      
+      if (DS->hasSolitaryDecl()) {      
         Block->appendStmt(Terminator);
-        return WalkAST_VisitDeclSubExpr(D);
+        return WalkAST_VisitDeclSubExpr(DS->getSolitaryDecl());
       }
       else {
         typedef llvm::SmallVector<ScopedDecl*,10> BufTy;
         BufTy Buf;        
         CFGBlock* B = 0;
-        do { Buf.push_back(D); D = D->getNextDeclarator(); } while (D);
+
+        // FIXME: Add a reverse iterator for DeclStmt to avoid this
+        // extra copy.
+        for (DeclStmt::decl_iterator DI=DS->decl_begin(), DE=DS->decl_end();
+             DI != DE; ++DI)
+          Buf.push_back(*DI);
+        
         for (BufTy::reverse_iterator I=Buf.rbegin(), E=Buf.rend(); I!=E; ++I) {
           // Get the alignment of UnaryDeclStmt, padding out to >=8 bytes.
           unsigned A = llvm::AlignOf<UnaryDeclStmt>::Alignment < 8
-- 
2.40.0