[LLVMdev] Question about calling convention implementation in LLVM target

[Reid Kleckner]

To my knowledge, this is an open project.  It would also really help with
x86_32 codegen, but people care less and less about that as time goes on.


On Wed, May 14, 2014 at 4:05 AM, Rodolphe Suescun <rsu.medal at dolphin.fr>wrote:

> 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
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