benchdnn: graph: restrict usage of mode-modifier=M

The driver lacks the proper support of this functionality.

tests/benchdnn/doc/driver_graph.md

@@ -72,6 +72,11 @@ disabled. When the build option is on, and the `ONEDNN_GRAPH_DUMP=subgraph` envi
 variable is specified, the library generates JSON files with partitions
 returned.
 
+## Limitations
+
+* Graph driver doesn't support `--mode-modifier=M` or `--mode=F` (which contains
+  `--mode-modifier=M` in it).
+
 ## Example
 
 Run the demo `conv_post_ops_fusion` partition

tests/benchdnn/graph/bench_graph.cpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2022-2024 Intel Corporation
+* Copyright 2022-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -56,6 +56,17 @@ void check_correctness(const settings_t &s) {
     }
 }
 
+int verify_input(const settings_t &s) {
+    if (has_bench_mode_modifier(mode_modifier_t::no_ref_memory)) {
+        // TODO: update graph driver doc page once the limitation is removed.
+        BENCHDNN_PRINT(0, "%s\n",
+                "Error: graph driver doesn't support "
+                "--mode-modifier=M/--mode=F.");
+        return FAIL;
+    }
+    return OK;
+}
+
 int bench(int argc, char **argv) {
     driver_name = "graph";
     using namespace parser;
@@ -75,6 +86,7 @@ int bench(int argc, char **argv) {
         if (!parsed_options) {
             if (!parse_input_file(s.json_file, argv[0]))
                 catch_unknown_options(argv[0]);
+            SAFE(verify_input(s), WARN);
             check_correctness(s);
             flush_temp_memory();
         }