pan/midgard: Allocate spill_slot once

Multiple spill moves share a single spill slot. Issue found in Krita.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

diff --git a/src/panfrost/midgard/midgard_schedule.c b/src/panfrost/midgard/midgard_schedule.c
index ce97287d199fd9e03960c03fc7e4627ca7abf25f..ab96a4b8fff36957920559cd19d42ec25b7709c0 100644 (file)
--- a/src/panfrost/midgard/midgard_schedule.c
+++ b/src/panfrost/midgard/midgard_schedule.c
@@ -781,13 +781,15 @@ static void mir_spill_register(
          * implicitly. For special writes, spill to a work register */
 
         if (!is_special || is_special_w) {
+                if (is_special_w)
+                        spill_slot = spill_index++;
+
                 mir_foreach_instr_global_safe(ctx, ins) {
                         if (ins->ssa_args.dest != spill_node) continue;
 
                         midgard_instruction st;
 
                         if (is_special_w) {
-                                spill_slot = spill_index++;
                                 st = v_mov(spill_node, blank_alu_src, spill_slot);
                                 st.no_spill = true;
                         } else {