Add (broken) placeholder graph builder for RWKV

src/llama.cpp

@@ -14718,6 +14718,22 @@ struct llm_build_context {
 
         return gf;
     }
+
+    ggml_cgraph * build_rwkv() {
+        ggml_cgraph *gf = ggml_new_graph_custom(ctx0, LLAMA_MAX_NODES, false);
+
+        // Input embeddings, start of the model after tokenizing ({n_embd, n_tokens})
+        ggml_tensor *input_embeddings = llm_build_inp_embd(ctx0, lctx, hparams, batch, model.tok_embd, cb);
+
+        // Dummy operation, just to copy, we're not doing anything with it right now
+        ggml_tensor *output = ggml_scale(ctx0, input_embeddings, 1.0);
+
+        // Mark the output as being the result
+        cb(output, "result_output", -1);
+        ggml_build_forward_expand(gf, output);
+
+        return gf;
+    }
 };
 
 static struct ggml_cgraph * llama_build_graph_defrag(llama_context & lctx, const std::vector<uint32_t> & ids) {
@@ -14964,6 +14980,10 @@ static struct ggml_cgraph * llama_build_graph(
             {
                 result = llm.build_exaone();
             } break;
+        case LLM_ARCH_RWKV:
+            {
+                result = llm.build_rwkv();
+            } break;
         default:
             GGML_ABORT("fatal error");
     }