llama.cpp

334a835a - ggml : importance matrix support for legacy quants (#4969)

ggml : importance matrix support for legacy quants (#4969) * imatrix: adding support for legacy quants * imatrix: guard Q4_0/Q5_0 against ffn_down craziness --------- Co-authored-by: Iwan Kawrakow <iwan.kawrakow@gmail.com>