PR14606: Debug Info for namespace aliases/DW_TAG_imported_module

This resolves the last of the PR14606 failures in the GDB 7.5 test
suite. (but there are still unresolved issues in the imported_decl case
- we need to implement optional/lazy decls for functions & variables
like we already do for types)

llvm-svn: 182329

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGDebugInfo.h b/clang/lib/CodeGen/CGDebugInfo.h
index f19f750e60f..cca6e1ba31c 100644
--- a/clang/lib/CodeGen/CGDebugInfo.h
+++ b/clang/lib/CodeGen/CGDebugInfo.h
@@ -101,6 +101,7 @@ class CGDebugInfo {
   /// 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 NamespaceAliasDecl *, llvm::WeakVH> NamespaceAliasCache;
   llvm::DenseMap<const Decl *, llvm::WeakVH> StaticDataMemberCache;
 
   /// Helper functions for getOrCreateType.
@@ -277,6 +278,9 @@ public:
   /// \brief - Emit C++ using declaration.
   void EmitUsingDecl(const UsingDecl &UD);
 
+  /// \brief - Emit C++ namespace alias.
+  llvm::DIImportedEntity EmitNamespaceAlias(const NamespaceAliasDecl &NA);
+
   /// getOrCreateRecordType - Emit record type's standalone debug info.
   llvm::DIType getOrCreateRecordType(QualType Ty, SourceLocation L);