llm : fix llm_build_kqv taking unused tensor (benign, #3837)

Author: ggerganov

llama.cpp

@@ -3345,7 +3345,6 @@ static struct ggml_tensor * llm_build_ffn(
 // if max_alibi_bias > 0 then apply ALiBi
 static struct ggml_tensor * llm_build_kqv(
         struct ggml_context * ctx,
-         struct ggml_tensor * cur,
         const llama_hparams & hparams,
        const llama_kv_cache & kv,
          struct ggml_tensor * wo,
@@ -3411,7 +3410,7 @@ static struct ggml_tensor * llm_build_kqv(
     struct ggml_tensor * kqv_merged = ggml_permute(ctx, kqv, 0, 2, 1, 3);
     cb(kqv_merged, "kqv_merged", il);
 
-    cur = ggml_cont_2d(ctx, kqv_merged, n_embd, n_tokens);
+    struct ggml_tensor * cur = ggml_cont_2d(ctx, kqv_merged, n_embd, n_tokens);
     cb(cur, "kqv_merged_cont", il);
 
     cur = ggml_mul_mat(ctx, wo, cur);
@@ -3565,7 +3564,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, cur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, NULL,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, -1.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -3677,7 +3676,7 @@ struct llm_build_context {
                 // apply ALiBi for 13B model
                 const float max_alibi_bias = model.type == MODEL_13B ? 8.0f : -1.0f;
 
-                cur = llm_build_kqv(ctx0, cur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, NULL,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, max_alibi_bias, cb, il);
                 cb(cur, "kqv_out", il);
@@ -3795,7 +3794,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, attn_norm, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, NULL,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, -1.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -3895,7 +3894,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, cur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, model.layers[il].bo,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, -1.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -4100,7 +4099,7 @@ struct llm_build_context {
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
                 // TODO: not tested, could be broken
-                cur = llm_build_kqv(ctx0, Q, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, model.layers[il].bo,
                         Q, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, -1.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -4191,7 +4190,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, Qcur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, NULL,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, 8.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -4288,7 +4287,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, Qcur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, model.layers[il].bo,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, 8.0f, cb, il);
                 cb(cur, "kqv_out", il);
@@ -4382,7 +4381,7 @@ struct llm_build_context {
 
                 llm_build_kv_store(ctx0, hparams, kv_self, gf, Kcur, Vcur, n_ctx, n_tokens, kv_head, cb, il);
 
-                cur = llm_build_kqv(ctx0, Qcur, hparams, kv_self,
+                cur = llm_build_kqv(ctx0, hparams, kv_self,
                         model.layers[il].wo, NULL,
                         Qcur, KQ_scale, KQ_mask, n_ctx, n_tokens, n_kv, hparams.f_max_alibi_bias, cb, il);
                 cb(cur, "kqv_out", il);