Function _mm_aeskeygenassist_si128

pub unsafe fn _mm_aeskeygenassist_si128(a: __m128i, const IMM8: i32) -> __m128i

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

Assist in expanding the AES cipher key.

Assist in expanding the AES cipher key by computing steps towards generating a round key for encryption cipher using data from a and an 8-bit round constant IMM8.

Intel’s documentation