Function _mm512_aesdec_epi128 

pub fn _mm512_aesdec_epi128(a: __m512i, round_key: __m512i) -> __m512i

Available on x86-64 and target feature avx512f and target feature vaes and (x86 or x86-64) only.

Performs one round of an AES decryption flow on each 128-bit word (state) in a using the corresponding 128-bit word (key) in round_key.

Intel’s documentation