Some early work for providing block layout info.

for objective-c/c++ blocks (NeXt runtime).

llvm-svn: 110213

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGObjCMac.cpp b/clang/lib/CodeGen/CGObjCMac.cpp
index 4db7ec5f9ff..b30b44ba87e 100644
--- a/clang/lib/CodeGen/CGObjCMac.cpp
+++ b/clang/lib/CodeGen/CGObjCMac.cpp
@@ -1033,6 +1033,9 @@ public:
   /// forward references will be filled in with empty bodies if no
   /// definition is seen. The return value has type ProtocolPtrTy.
   virtual llvm::Constant *GetOrEmitProtocolRef(const ObjCProtocolDecl *PD)=0;
+  virtual llvm::Constant *GCBlockLayout(CodeGen::CodeGenFunction &CGF,
+                      const llvm::SmallVectorImpl<const BlockDeclRefExpr *> &);
+  
 };
 
 class CGObjCMac : public CGObjCCommonMac {
@@ -1686,6 +1689,11 @@ CGObjCCommonMac::EmitLegacyMessageSend(CodeGen::CodeGenFunction &CGF,
   return CGF.EmitCall(FnInfo, Fn, Return, ActualArgs);
 }
 
+llvm::Constant *CGObjCCommonMac::GCBlockLayout(CodeGen::CodeGenFunction &CGF,
+              const llvm::SmallVectorImpl<const BlockDeclRefExpr *> &BDRE) {
+  return llvm::Constant::getNullValue(llvm::Type::getInt8PtrTy(VMContext));
+}
+
 llvm::Value *CGObjCMac::GenerateProtocolRef(CGBuilderTy &Builder,
                                             const ObjCProtocolDecl *PD) {
   // FIXME: I don't understand why gcc generates this, or where it is