[LLVMdev] Proposal : Function Notes

[Chris Lattner]

On Aug 23, 2008, at 6:58 AM, Matthijs Kooijman wrote:

> Hi Devang,
>
>> All supported notes must be documented in LLVM language reference.
> Does this also mean that undocumented / unsupported notes are  
> invalid? In
> particular, when I have a custom frontend and backend, using custom  
> notes
> could be a great way to communicate between those, if the LLVM IR  
> would allow
> unknown notes.

As mentioned before Devang's proposal is not really suited for that.   
The notes should be considered to be part of the LLVM IR, and  
documented in langref (Devang, did you do this?).

The metadata proposal I sent out would be a more appropriate way of  
handling cases where front-ends want to propagate arbitrary information.
http://nondot.org/sabre/LLVMNotes/EmbeddedMetadata.txt

-Chris