aco: Add bvh64_intersect_ray_amd intrinsic.
Only top two patches, rest is from !9767 (merged) . Upstreaming this early because rebasing across all the intrinsic changes is annoying.
Tested as part of my rt-traversal branch.
Only top two patches, rest is from !9767 (merged) . Upstreaming this early because rebasing across all the intrinsic changes is annoying.
Tested as part of my rt-traversal branch.