[LLVMdev] Recursive Types using the llvm support library

[Vladimir Merzliakov]

>> An example where something really simple like the line below was output
>> would be perfect.
>>
>> %struct.linked_list = type { %struct.linked_list*, %sbyte* }
> 
> Use something like this:
> 
>   PATypeHolder StructTy = OpaqueType::get();
>   std::vector<const Type*> Elts;
>   Elts.push_back(PointerType::get(StructTy));
>   Elts.push_back(PointerType::get(Type::SByteTy));
>   StructType *NewSTy = StructType::get(Elts);
> 
>   // At this point, NewSTy = "{ opaque*, sbyte* }", tell VMCore that
>   // the struct and the opaque type are actually the same.
>   cast<OpaqueType>(StructTy.get())->refineAbstractTypeTo(NewSTy);
> 
>   // NewSTy is potentially invalidated, but StructTy (a PATypeHolder) is
>   // kept up-to-date.
>   NewSTy = StructTy.get();
> 
Is assert(!NewSTy->isAbstract()) must pass  after this line?

Vladimir