This directory contains the specifications for SYCL extensions that are considered experimental in the DPC++ compiler. The APIs in these extensions are not stable. They may be changed or even removed in subsequent releases of DPC++ without prior notice. As a result, they are not recommended for use in production code.

Experimental extensions may eventually be promoted to "supported". When this happens, a new specification is added to the "supported" directory, which may not exactly match the experimental version. (In particular, the namespace containing the APIs is often changed from sycl::ext::oneapi::experimental to sycl::ext::oneapi.) The original experimental specification may be retained for a time, or it may be removed.