Commit 91f2fa52 for whisper.cpp

commit 91f2fa52f493b3db17ca3be3f81a2b2a3744b942
Author: Georgi Gerganov <ggerganov@gmail.com>
Date:   Wed Oct 14 12:36:52 2026 +0300

    ggml : add note about mul_mat_id + disable mul_mat_id_dup tests (llama/30501)

diff --git a/ggml/include/ggml.h b/ggml/include/ggml.h
index 224bdef9..23ea6437 100644
--- a/ggml/include/ggml.h
+++ b/ggml/include/ggml.h
@@ -1497,6 +1497,11 @@ extern "C" {
             enum ggml_op_hint    hint);

     // indirect matrix multiplication
+    //
+    // [TAG_MUL_MAT_ID_DUPLICATE_ID]
+    // note: this op has undefined behaviour if a given `a` is referenced more than once for a given `b`
+    //       (i.e. duplicate experts per token are not guaranteed to be supported in all backends)
+    // TODO: add backend support: https://github.com/ggml-org/llama.cpp/pull/29998#issuecomment-6153742533
     GGML_API struct ggml_tensor * ggml_mul_mat_id(
             struct ggml_context * ctx,
             struct ggml_tensor  * as,