Move getAccessedFieldNo out of lib/AST/Expr.cpp into

lib/CodeGen/CGExpr.cpp and to change include/clang/AST/Attr.h to
use its own enum for visibility types instead of using
llvm::GlobalValue::VisibilityTypes. These changes eliminate
dependencies in the AST library on LLVM's VMCore library.

llvm-svn: 51398

clang/lib/CodeGen/CodeGenFunction.h

@@ -350,6 +350,11 @@ public:
 
   /// GetAddrOfStaticLocalVar - Return the address of a static local variable.
   llvm::Constant *GetAddrOfStaticLocalVar(const VarDecl *BVD);
+
+  /// getAccessedFieldNo - Given an encoded value and a result number, return
+  /// the input field number being accessed.
+  static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts);
+
   //===--------------------------------------------------------------------===//
   //                            Declaration Emission
   //===--------------------------------------------------------------------===//