Add a new 'type_visibility' attribute to allow users to

control the visibility of a type for the purposes of RTTI
and template argument restrictions independently of how
visibility propagates to its non-type member declarations.

Also fix r175326 to not ignore template argument visibility
on a template explicit instantiation when a member has
an explicit attribute but the instantiation does not.

The type_visibility work is rdar://11880378

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175587 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 1 deletions

diff --git a/include/clang/AST/Decl.h b/include/clang/AST/Decl.h
index e9643d2dc7..f6c912a38b 100644
--- a/include/clang/AST/Decl.h
+++ b/include/clang/AST/Decl.h
@@ -300,9 +300,16 @@ public:
   /// \brief Determines the linkage and visibility of this entity.
   LinkageInfo getLinkageAndVisibility() const;
 
+  /// Kinds of explicit visibility.
+  enum ExplicitVisibilityKind {
+    VisibilityForType,
+    VisibilityForValue
+  };
+
   /// \brief If visibility was explicitly specified for this
   /// declaration, return that visibility.
-  llvm::Optional<Visibility> getExplicitVisibility() const;
+  llvm::Optional<Visibility>
+  getExplicitVisibility(ExplicitVisibilityKind kind) const;
 
   /// \brief Clear the linkage cache in response to a change
   /// to the declaration.