diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index cb9e636..f38c04b 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -111,20 +111,6 @@
   return C;
 }
 
-llvm::Constant *BlockModule::getNSConcreteGlobalBlock() {
-  if (NSConcreteGlobalBlock == 0)
-    NSConcreteGlobalBlock = CGM.CreateRuntimeVariable(PtrToInt8Ty,
-                                                      "_NSConcreteGlobalBlock");
-  return NSConcreteGlobalBlock;
-}
-
-llvm::Constant *BlockModule::getNSConcreteStackBlock() {
-  if (NSConcreteStackBlock == 0)
-    NSConcreteStackBlock = CGM.CreateRuntimeVariable(PtrToInt8Ty,
-                                                     "_NSConcreteStackBlock");
-  return NSConcreteStackBlock;
-}
-
 static void CollectBlockDeclRefInfo(const Stmt *S, CGBlockInfo &Info) {
   for (Stmt::const_child_iterator I = S->child_begin(), E = S->child_end();
        I != E; ++I)
@@ -700,7 +686,7 @@
          && "no imports allowed for global block");
 
   // isa
-  LiteralFields[0] = getNSConcreteGlobalBlock();
+  LiteralFields[0] = CGM.getNSConcreteGlobalBlock();
 
   // Flags
   LiteralFields[1] =
@@ -1012,7 +998,7 @@
         Dstv = Builder.CreateBitCast(Dstv, PtrToInt8Ty);
 
         llvm::Value *N = llvm::ConstantInt::get(CGF.Int32Ty, flag);
-        llvm::Value *F = getBlockObjectAssign();
+        llvm::Value *F = CGM.getBlockObjectAssign();
         Builder.CreateCall3(F, Dstv, Srcv, N);
       }
     }
@@ -1164,7 +1150,7 @@
   flag |= BLOCK_BYREF_CALLER;
 
   llvm::Value *N = llvm::ConstantInt::get(CGF.Int32Ty, flag);
-  llvm::Value *F = getBlockObjectAssign();
+  llvm::Value *F = CGM.getBlockObjectAssign();
   Builder.CreateCall3(F, DstObj, SrcObj, N);
 
   CGF.FinishFunction();
@@ -1259,37 +1245,8 @@
   return Entry=CodeGenFunction(CGM).GeneratebyrefDestroyHelperFunction(T, Flag);
 }
 
-llvm::Value *BlockFunction::getBlockObjectDispose() {
-  if (CGM.BlockObjectDispose == 0) {
-    const llvm::FunctionType *FTy;
-    std::vector<const llvm::Type*> ArgTys;
-    const llvm::Type *ResultType = llvm::Type::getVoidTy(VMContext);
-    ArgTys.push_back(PtrToInt8Ty);
-    ArgTys.push_back(CGF.Int32Ty);
-    FTy = llvm::FunctionType::get(ResultType, ArgTys, false);
-    CGM.BlockObjectDispose
-      = CGM.CreateRuntimeFunction(FTy, "_Block_object_dispose");
-  }
-  return CGM.BlockObjectDispose;
-}
-
-llvm::Value *BlockFunction::getBlockObjectAssign() {
-  if (CGM.BlockObjectAssign == 0) {
-    const llvm::FunctionType *FTy;
-    std::vector<const llvm::Type*> ArgTys;
-    const llvm::Type *ResultType = llvm::Type::getVoidTy(VMContext);
-    ArgTys.push_back(PtrToInt8Ty);
-    ArgTys.push_back(PtrToInt8Ty);
-    ArgTys.push_back(CGF.Int32Ty);
-    FTy = llvm::FunctionType::get(ResultType, ArgTys, false);
-    CGM.BlockObjectAssign
-      = CGM.CreateRuntimeFunction(FTy, "_Block_object_assign");
-  }
-  return CGM.BlockObjectAssign;
-}
-
 void BlockFunction::BuildBlockRelease(llvm::Value *V, int flag) {
-  llvm::Value *F = getBlockObjectDispose();
+  llvm::Value *F = CGM.getBlockObjectDispose();
   llvm::Value *N;
   V = Builder.CreateBitCast(V, PtrToInt8Ty);
   N = llvm::ConstantInt::get(CGF.Int32Ty, flag);
diff --git a/lib/CodeGen/CGBlocks.h b/lib/CodeGen/CGBlocks.h
index 772a62c..743e3c8 100644
--- a/lib/CodeGen/CGBlocks.h
+++ b/lib/CodeGen/CGBlocks.h
@@ -73,8 +73,6 @@
   CodeGenTypes &getTypes() { return Types; }
   const llvm::TargetData &getTargetData() const { return TheTargetData; }
 public:
-  llvm::Constant *getNSConcreteGlobalBlock();
-  llvm::Constant *getNSConcreteStackBlock();
   int getGlobalUniqueCount() { return ++Block.GlobalUniqueCount; }
   const llvm::Type *getBlockDescriptorType();
 
@@ -82,14 +80,6 @@
 
   llvm::Constant *GetAddrOfGlobalBlock(const BlockExpr *BE, const char *);
 
-  /// NSConcreteGlobalBlock - Cached reference to the class pointer for global
-  /// blocks.
-  llvm::Constant *NSConcreteGlobalBlock;
-
-  /// NSConcreteStackBlock - Cached reference to the class poinnter for stack
-  /// blocks.
-  llvm::Constant *NSConcreteStackBlock;
-
   const llvm::Type *BlockDescriptorType;
   const llvm::Type *GenericBlockLiteralType;
 
@@ -97,8 +87,6 @@
     int GlobalUniqueCount;
   } Block;
 
-  llvm::Value *BlockObjectAssign;
-  llvm::Value *BlockObjectDispose;
   const llvm::PointerType *PtrToInt8Ty;
 
   std::map<uint64_t, llvm::Constant *> AssignCache;
@@ -108,9 +96,7 @@
               CodeGenTypes &T, CodeGenModule &CodeGen)
     : Context(C), TheModule(M), TheTargetData(TD), Types(T),
       CGM(CodeGen), VMContext(M.getContext()),
-      NSConcreteGlobalBlock(0), NSConcreteStackBlock(0), BlockDescriptorType(0),
-      GenericBlockLiteralType(0),
-      BlockObjectAssign(0), BlockObjectDispose(0) {
+      BlockDescriptorType(0), GenericBlockLiteralType(0) {
     Block.GlobalUniqueCount = 0;
     PtrToInt8Ty = llvm::Type::getInt8PtrTy(M.getContext());
   }
@@ -207,8 +193,6 @@
   llvm::Constant *BuildbyrefDestroyHelper(const llvm::Type *T, int flag,
                                           unsigned Align);
 
-  llvm::Value *getBlockObjectAssign();
-  llvm::Value *getBlockObjectDispose();
   void BuildBlockRelease(llvm::Value *DeclPtr, int flag = BLOCK_FIELD_IS_BYREF);
 
   bool BlockRequiresCopying(QualType Ty)
diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index ed95422..f05a018 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -50,9 +50,10 @@
     TheTargetData(TD), TheTargetCodeGenInfo(0), Diags(diags),
     Types(C, M, TD, getTargetCodeGenInfo().getABIInfo()),
     VTables(*this), Runtime(0), ABI(0),
-    CFConstantStringClassRef(0),
-    NSConstantStringClassRef(0),
-    VMContext(M.getContext()) {
+    CFConstantStringClassRef(0), NSConstantStringClassRef(0),
+    VMContext(M.getContext()),
+    NSConcreteGlobalBlock(0), NSConcreteStackBlock(0),
+    BlockObjectAssign(0), BlockObjectDispose(0){
 
   if (!Features.ObjC1)
     Runtime = 0;
@@ -2132,3 +2133,54 @@
     }
   }
 }
+
+///@name Custom Runtime Function Interfaces
+///@{
+//
+// FIXME: These can be eliminated once we can have clients just get the required
+// AST nodes from the builtin tables.
+
+llvm::Constant *CodeGenModule::getBlockObjectDispose() {
+  if (BlockObjectDispose)
+    return BlockObjectDispose;
+
+  const llvm::FunctionType *FTy;
+  std::vector<const llvm::Type*> ArgTys;
+  const llvm::Type *ResultType = llvm::Type::getVoidTy(VMContext);
+  ArgTys.push_back(PtrToInt8Ty);
+  ArgTys.push_back(llvm::Type::getInt32Ty(VMContext));
+  FTy = llvm::FunctionType::get(ResultType, ArgTys, false);
+  return BlockObjectDispose =
+    CreateRuntimeFunction(FTy, "_Block_object_dispose");
+}
+
+llvm::Constant *CodeGenModule::getBlockObjectAssign() {
+  if (BlockObjectAssign)
+    return BlockObjectAssign;
+
+  const llvm::FunctionType *FTy;
+  std::vector<const llvm::Type*> ArgTys;
+  const llvm::Type *ResultType = llvm::Type::getVoidTy(VMContext);
+  ArgTys.push_back(PtrToInt8Ty);
+  ArgTys.push_back(PtrToInt8Ty);
+  ArgTys.push_back(llvm::Type::getInt32Ty(VMContext));
+  FTy = llvm::FunctionType::get(ResultType, ArgTys, false);
+  return BlockObjectAssign =
+    CreateRuntimeFunction(FTy, "_Block_object_assign");
+}
+
+llvm::Constant *CodeGenModule::getNSConcreteGlobalBlock() {
+  if (NSConcreteGlobalBlock)
+    return NSConcreteGlobalBlock;
+  return NSConcreteGlobalBlock = CreateRuntimeVariable(
+    PtrToInt8Ty, "_NSConcreteGlobalBlock");
+}
+
+llvm::Constant *CodeGenModule::getNSConcreteStackBlock() {
+  if (NSConcreteStackBlock)
+    return NSConcreteStackBlock;
+  return NSConcreteStackBlock = CreateRuntimeVariable(
+    PtrToInt8Ty, "_NSConcreteStackBlock");
+}
+
+///@}
diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 05d02ec..f3bd307 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -193,6 +193,16 @@
   void createCXXABI();
 
   llvm::LLVMContext &VMContext;
+
+  /// @name Cache for Blocks Runtime Globals
+  /// @{
+
+  llvm::Constant *NSConcreteGlobalBlock;
+  llvm::Constant *NSConcreteStackBlock;
+  llvm::Constant *BlockObjectAssign;
+  llvm::Constant *BlockObjectDispose;
+
+  /// @}
 public:
   CodeGenModule(ASTContext &C, const CodeGenOptions &CodeGenOpts,
                 llvm::Module &M, const llvm::TargetData &TD, Diagnostic &Diags);
@@ -398,6 +408,16 @@
   llvm::Constant *CreateRuntimeVariable(const llvm::Type *Ty,
                                         llvm::StringRef Name);
 
+  ///@name Custom Blocks Runtime Interfaces
+  ///@{
+
+  llvm::Constant *getNSConcreteGlobalBlock();
+  llvm::Constant *getNSConcreteStackBlock();
+  llvm::Constant *getBlockObjectAssign();
+  llvm::Constant *getBlockObjectDispose();
+
+  ///@}
+
   void UpdateCompletedType(const TagDecl *TD) {
     // Make sure that this type is translated.
     Types.UpdateCompletedType(TD);