From 8fc3cee2ac8d5e48cce4e595efbe6c50de298a84 Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Wed, 16 Sep 2026 16:42:05 +0300
Subject: [PATCH] meta : forward graph_optimize to underlying backends

Assisted-by: pi:llama.cpp/DeepSeek-V4-Flash-Vision-Exp
---
 ggml/src/ggml-backend-meta.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/ggml/src/ggml-backend-meta.cpp b/ggml/src/ggml-backend-meta.cpp
index 3ec40fb1af..7b78771640 100644
--- a/ggml/src/ggml-backend-meta.cpp
+++ b/ggml/src/ggml-backend-meta.cpp
@@ -2464,6 +2464,16 @@ static enum ggml_status ggml_backend_meta_graph_compute(ggml_backend_t backend,
     return GGML_STATUS_SUCCESS;
 }
 
+static void ggml_backend_meta_graph_optimize(ggml_backend_t backend, struct ggml_cgraph * cgraph, struct ggml_backend_graph_optimize_params * params) {
+    ggml_backend_meta_context * ctx = (ggml_backend_meta_context *) backend->context;
+
+    for (auto & bc : ctx->backend_configs) {
+        if (bc.backend->iface.graph_optimize) {
+            bc.backend->iface.graph_optimize(bc.backend, cgraph, params);
+        }
+    }
+}
+
 static const ggml_backend_i ggml_backend_meta_i = {
     /* .get_name                = */ ggml_backend_meta_get_name,
     /* .free                    = */ ggml_backend_meta_free,
@@ -2480,7 +2490,7 @@ static const ggml_backend_i ggml_backend_meta_i = {
     /* .graph_compute           = */ ggml_backend_meta_graph_compute,
     /* .event_record            = */ nullptr,
     /* .event_wait              = */ nullptr,
-    /* .graph_optimize          = */ nullptr,
+    /* .graph_optimize          = */ ggml_backend_meta_graph_optimize,
 };
 
 bool ggml_backend_is_meta(ggml_backend_t backend) {