In addition to bringing us one backend closer to the scoped-only future, this
improves the generated code in cases like:
memoryBarrierBuffer();
memoryBarrierShared();
controlBarrier();
With scoped_barriers + nir_opt_combine_barriers, we now emit only one MEMBAR
instruction (and a BARRIER) rather than two MEMBARs.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23191>
Alyssa Rosenzweig
749b4817ad