[LLVMdev] Question about calling convention implementation in LLVM target

[Rodolphe Suescun]

Hi,

We are currently developing an LLVM target for a micro-controller,
and would like our TargetLowering::LowerCall method to emit
PUSH instructions (instead of STORE) to pass arguments (which
would improve code density for function calls).

Is there a way of keeping track of the stack pointer changes
implied by the PUSH instruction to calculate the correct
offsets in RegisterInfo::eliminateFrameIndex when the call
sequence is generated ?

Thanks a lot in advance,
Rod