search for: lowerwhatever

...ool CC_XCore(...) { > <does weird and wonderful stuff> > } I think you're misinterpreting the purpose of these CC_* functions. They don't actually do any of the work themselves. Their job is to decide in broad terms where an argument goes and to record that decision for the LowerWhatever functions. In fact, they don't have access to any of the CodeGen or SelectionDAG machinery necessary to do the job themselves. The idea is that the DAG nodes we need to produce are actually different in caller and callee, but whether some argument goes in R0 or R1 (or a stack slot) should hope...

Hi Tim, Thank you for the input. I think I follow you. I believe the LowerCall is doing what it needs to do - passing pointer either on the stack or in register as per ABI. The LowerFormalArguments() is where I am stuck. LowerFormalArguments () calls CCInfo.AnalyzeFormalArguments(Ins, CC_XCore), which calls the CC_XCore(). This is where I placed the CCIfByVal<CCPassByVal<0,4>> which

...ool CC_XCore(...) { > <does weird and wonderful stuff> > } I think you're misinterpreting the purpose of these CC_* functions. They don't actually do any of the work themselves. Their job is to decide in broad terms where an argument goes and to record that decision for the LowerWhatever functions. In fact, they don't have access to any of the CodeGen or SelectionDAG machinery necessary to do the job themselves. The idea is that the DAG nodes we need to produce are actually different in caller and callee, but whether some argument goes in R0 or R1 (or a stack slot) should hope...