llvm dev - Sep 2019 - Struct type as function argument while inserting call instruction through llvm pass

I am an undergraduate student. For my final year project, to a part, I need
to do some LLVM transformations through passes.  I am not much familiar
with LLVM so I don't know it is a good question to ask. but do help if you
can. I need to insert an instruction of the following signature: void
MyThread::initialize(int num ,MyThread* myThread). So one of my call
instruction is like:     myThread->initialize(Count, myThread); So I tried
to achieve this by like this: CallInst::Create(hook,args)->insertAfter(i)
.Here args should be arrayref of llvm::Value *. My question is how to get
my custom class object (Mythread myThread)as StructType and pass it as
Value* so that I can insert the specific call instruction?

Thank you. Regards
Kirosh
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