[LLVMdev] String attributes for function arguments and return values

[Hal Finkel]

----- Original Message -----
> From: "Artur Pilipenko" <apilipenko at azulsystems.com>
> To: llvmdev at cs.uiuc.edu
> Cc: "Hal Finkel" <hfinkel at anl.gov>
> Sent: Monday, July 13, 2015 6:45:35 AM
> Subject: String attributes for function arguments and return values
> 
> Hi,
> 
> I’d like to support string attributes on function arguments and
> return values. We are going to use them in our tree to express
> higher level language types.

How do you expect to use this information? Will you need the inliner to do something special with these?

Thanks again,
Hal

> 
> Internally attributes framework have everything to do this, it’s even
> possible to generate string attributes via API right now:
> Function *function;
> function->setAttributes(function->getAttributes().addAttribute(context,
> i, "attribute"));
> But because it’s not supported in LLParser if you dump the function
> and try to parse it back it will fail. I have a patch to fix this
> problem:
> http://reviews.llvm.org/D11058
> I consider this part as a bug fix for existing functionality.
> 
> The second patch is to add accessors to string attributes to Argument
> and Function classes:
> http://reviews.llvm.org/D10872
> This part is optional because there no code in upstream will make use
> of it. But if we support string attributes syntax it makes sense to
> provide API support as well.
> 
> Does anyone have any objections?
> 
> Thanks,
> Artur
> 
> 
> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory