pan/mdg: Free previous liveness

Before we drop the reference.

160 calls with 0B peak consumption from:
    0xffffbd9d2fc3
      in ??
    pan_compute_liveness
      at ../src/panfrost/util/pan_liveness.c:127
      in /home/alyssa/rockchip_dri.so
    mir_compute_liveness
      at ../src/panfrost/midgard/midgard_liveness.c:55
      in /home/alyssa/rockchip_dri.so
    midgard_opt_dead_code_eliminate
      at ../src/panfrost/midgard/midgard_opt_dce.c:118
      in /home/alyssa/rockchip_dri.so

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Cc: mesa-stable
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6373>

diff --git a/src/panfrost/util/pan_liveness.c b/src/panfrost/util/pan_liveness.c
index 9772feb1a9c412a719e889ea9e2daf8f80409561..0ec9652b59dc2c8f0fc9e5e8826de8c026bda8f0 100644 (file)
--- a/src/panfrost/util/pan_liveness.c
+++ b/src/panfrost/util/pan_liveness.c
@@ -120,11 +120,13 @@ pan_compute_liveness(
                         _mesa_hash_pointer,
                         _mesa_key_pointer_equal);
 
-        /* Allocate */
+        /* Free any previous liveness, and allocate */
+
+        pan_free_liveness(blocks);
 
         list_for_each_entry(pan_block, block, blocks, link) {
-                block->live_in = rzalloc_array(NULL, uint16_t, temp_count);
-                block->live_out = rzalloc_array(NULL, uint16_t, temp_count);
+                block->live_in = rzalloc_array(block, uint16_t, temp_count);
+                block->live_out = rzalloc_array(block, uint16_t, temp_count);
         }
 
         /* Initialize the work list with the exit block */