ggml-org/llama.cpp b11064

on GitHub

metal : support arbitrary hc in dsv4_hc_pre (#29169)

the dsv4_hc_pre kernels hardcoded hc = 4 via a constexpr used with
simd_shuffle, so the op was rejected by supports_op for any other hc
and fell back to CPU. Kimi-K3 uses dsv4_hc_pre with hc equal to the
number of banked checkpoints in the cross-layer residual stack, which
grows with the layer index.

pass n_hc as a function constant (FC_DSV4_HC) with per-n_hc pipeline
variants, and loop over it in both pre kernels with direct loads

add test-backend-ops cases for hc = 1, 2, 3, 5, 8 and 65, gated and
not gated

Assisted-by: pi:llama.cpp/Qwen3.8-27B