8a993cf900
This adds a vtn_pointer_ssa_is_desc_index() helper and makes both to/from_ssa work in terms of it, ensuring we never screw up the condition and turn a deref into a block index or vice versa. Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36427>