Function _mm256_sm4rnds4_epi32 

pub fn _mm256_sm4rnds4_epi32(a: __m256i, b: __m256i) -> __m256i

Available on x86 and target feature avx and target feature sm4 and (x86 or x86-64) only.

This intrinsic performs four rounds of SM4 encryption. The intrinsic operates on independent 128-bit lanes. The calculated results are stored in dst.

Intel’s documentation