Revert "Debug Info: Using declarations/DW_TAG_imported_declaration of variables, types, and functions."

This reverts commit r181393 (git 3923d6a87fe7b2c91cc4a7dbd90c4ec7e2316bcd).

This seems to be emitting too much extra debug info for two (known)
reasons:
* full class definitions are emitted when only declarations are expected
* unused using declarations still produce DW_TAG_imported_declarations

llvm-svn: 181947

1 files changed, 0 insertions, 13 deletions

diff --git a/clang/lib/CodeGen/CGDebugInfo.h b/clang/lib/CodeGen/CGDebugInfo.h
index f221a0cd3eb..4080492a1c6 100644
--- a/clang/lib/CodeGen/CGDebugInfo.h
+++ b/clang/lib/CodeGen/CGDebugInfo.h
@@ -35,7 +35,6 @@ namespace clang {
   class ObjCIvarDecl;
   class ClassTemplateSpecializationDecl;
   class GlobalDecl;
-  class UsingDecl;
 
 namespace CodeGen {
   class CodeGenModule;
@@ -95,9 +94,6 @@ class CGDebugInfo {
 
   llvm::DenseMap<const char *, llvm::WeakVH> DIFileCache;
   llvm::DenseMap<const FunctionDecl *, llvm::WeakVH> SPCache;
-  /// \brief Cache declarations relevant to DW_TAG_imported_declarations (C++
-  /// using declarations) that aren't covered by other more specific caches.
-  llvm::DenseMap<const Decl *, llvm::WeakVH> DeclCache;
   llvm::DenseMap<const NamespaceDecl *, llvm::WeakVH> NameSpaceCache;
   llvm::DenseMap<const Decl *, llvm::WeakVH> StaticDataMemberCache;
 
@@ -269,9 +265,6 @@ public:
   /// \brief - Emit C++ using directive.
   void EmitUsingDirective(const UsingDirectiveDecl &UD);
 
-  /// \brief - Emit C++ using declaration.
-  void EmitUsingDecl(const UsingDecl &UD);
-
   /// getOrCreateRecordType - Emit record type's standalone debug info. 
   llvm::DIType getOrCreateRecordType(QualType Ty, SourceLocation L);
 
@@ -293,8 +286,6 @@ private:
   /// getContextDescriptor - Get context info for the decl.
   llvm::DIScope getContextDescriptor(const Decl *Decl);
 
-  llvm::DIScope getCurrentContextDescriptor(const Decl *Decl);
-
   /// createRecordFwdDecl - Create a forward decl for a RecordType in a given
   /// context.
   llvm::DIType createRecordFwdDecl(const RecordDecl *, llvm::DIDescriptor);
@@ -338,10 +329,6 @@ private:
   llvm::DIType CreateMemberType(llvm::DIFile Unit, QualType FType,
                                 StringRef Name, uint64_t *Offset);
 
-  /// \brief Retrieve the DIDescriptor, if any, for the canonical form of this
-  /// declaration.
-  llvm::DIDescriptor getDeclarationOrDefinition(const Decl *D);
-
   /// getFunctionDeclaration - Return debug info descriptor to describe method
   /// declaration for the given method definition.
   llvm::DISubprogram getFunctionDeclaration(const Decl *D);