# Function _mm256_sm4key4_epi32

Source

    pub fn _mm256_sm4key4_epi32(a: __m256i, b: __m256i) -> __m256i

🔬This is a nightly-only experimental API. (`sha512_sm_x86` #126624)
Available on (x86 or x86-64) and target feature `sm4,avx` and x86 only.
Expand description

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

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