llvm dev - Oct 2018 - Determine callee inside a custom calling convention

Hi,

I am new to LLVM so bear with me if the answer to my question is obvious.
I am experimenting with a custom calling convention for X86, which I
hooked up in the tablegen'ed calling convention definition:

bool CC_X86_64_CustomCall(unsigned &ValNo, MVT &ValVT, MVT &LocVT,
                                                 CCValAssign::LocInfo
&LocInfo,
                                                  ISD::ArgFlagsTy
&ArgFlags, CCState &State);

Inside this function, how to determine the callee?

With State.getMachineFunction() I only get the caller, but not the callee.

Thank you for your help!

Best,
Anna

On 10/1/2018 8:20 AM, Anna P via llvm-dev wrote:
> Hi,
>
> I am new to LLVM so bear with me if the answer to my question is obvious.
> I am experimenting with a custom calling convention for X86, which I
> hooked up in the tablegen'ed calling convention definition:
>
> bool CC_X86_64_CustomCall(unsigned &ValNo, MVT &ValVT, MVT
&LocVT,
>                                                   CCValAssign::LocInfo
&LocInfo,
>                                                    ISD::ArgFlagsTy
> &ArgFlags, CCState &State);
>
> Inside this function, how to determine the callee?
>
> With State.getMachineFunction() I only get the caller, but not the callee.
The callee is normally irrelevant.  What are you trying to do?

-Eli

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