pub unsafe fn _mm256_inserti32x4<const IMM8: i32>(
    a: __m256i,
    b: __m128i
) -> __m256i
🔬 This is a nightly-only experimental API. (stdsimd)
This is supported on x86-64 and target feature avx512f,avx512vl only.
Expand description

Copy a to dst, then insert 128 bits (composed of 4 packed 32-bit integers) from b into dst at the location specified by imm8.

Intel’s documentation