[clang] [clang][sycl] Remove support for global_device and global_host AS (PR #194423)

[via cfe-commits]

elizabethandrews wrote:

> > > [#194423 (comment)](https://github.com/llvm/llvm-project/pull/194423#discussion_r3149229941) - sorry, I commented assumed that these has been removed from the downstream fork. I removed my comment when I realized that the patch targets llvm/llvm-project.
> > > AFAIK, there attributes are not supported by Intel DPC++, but I have no information regarding other implementations. The least we do is check with the Altera team, which requested these attributes.
> > 
> > 
> > Can you please let me know who I can contact from the Altera team?
> 
> I don't have reliable contact information. I suggest we post an RFC about dropping these attributes to see if there are any users for these attributes.

I have posted one here - https://discourse.llvm.org/t/rfc-remove-opencl-global-device-and-opencl-global-host-address-space-attributes/90677.

Thank you for contacting Altera via email @bader.  I am updating this thread to let other reviewers know that we have received confirmation that these attributes are not used by Altera. 


https://github.com/llvm/llvm-project/pull/194423