Improved handling of the visibility attribute. Declarations now inherit their parent's visibility.

(This is kind of a risky change, but I did a self-host build and everything appears to work fine!)

llvm-svn: 95511

clang/lib/CodeGen/CodeGenModule.cpp

@@ -132,6 +132,10 @@ CodeGenModule::getDeclVisibilityMode(const Decl *D) const {
     }
   }
 
+  // This decl should have the same visibility as its parent.
+  if (const DeclContext *DC = D->getDeclContext()) 
+    return getDeclVisibilityMode(cast<Decl>(DC));
+
   return getLangOptions().getVisibilityMode();
 }