Unifies the name-lookup mechanisms used in various parts of the AST

and separates lexical name lookup from qualified name lookup. In
particular:
  * Make DeclContext the central data structure for storing and
    looking up declarations within existing declarations, e.g., members
    of structs/unions/classes, enumerators in C++0x enums, members of
    C++ namespaces, and (later) members of Objective-C
    interfaces/implementations. DeclContext uses a lazily-constructed
    data structure optimized for fast lookup (array for small contexts,
    hash table for larger contexts). 

  * Implement C++ qualified name lookup in terms of lookup into
    DeclContext.

  * Implement C++ unqualified name lookup in terms of
    qualified+unqualified name lookup (since unqualified lookup is not
    purely lexical in C++!)

  * Limit the use of the chains of declarations stored in
    IdentifierInfo to those names declared lexically.

  * Eliminate CXXFieldDecl, collapsing its behavior into
    FieldDecl. (FieldDecl is now a ScopedDecl).

  * Make RecordDecl into a DeclContext and eliminates its
    Members/NumMembers fields (since one can just iterate through the
    DeclContext to get the fields).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60878 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 6 deletions

diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 013b0f9cc3..201f53e34d 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -2373,12 +2373,15 @@ ObjCTypesHelper::ObjCTypesHelper(CodeGen::CodeGenModule &cgm)
   RecordDecl *RD = RecordDecl::Create(Ctx, TagDecl::TK_struct, 0,
                                       SourceLocation(),
                                       &Ctx.Idents.get("_objc_super"));  
-  FieldDecl *FieldDecls[2];
-  FieldDecls[0] = FieldDecl::Create(Ctx, SourceLocation(), 0, 
-                                    Ctx.getObjCIdType());
-  FieldDecls[1] = FieldDecl::Create(Ctx, SourceLocation(), 0,
-                                    Ctx.getObjCClassType());
-  RD->defineBody(Ctx, FieldDecls, 2);
+  RD->addDecl(Ctx, 
+              FieldDecl::Create(Ctx, RD, SourceLocation(), 0, 
+                                Ctx.getObjCIdType(), 0, false, 0), 
+              true);
+  RD->addDecl(Ctx, 
+              FieldDecl::Create(Ctx, RD, SourceLocation(), 0,
+                                Ctx.getObjCClassType(), 0, false, 0), 
+              true);
+  RD->completeDefinition(Ctx);
 
   SuperCTy = Ctx.getTagDeclType(RD);
   SuperPtrCTy = Ctx.getPointerType(SuperCTy);