Function _mm256_shuffle_i64x2

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub const fn _mm256_shuffle_i64x2(a: __m256i, b: __m256i, MASK: i32) -> __m256i

Shuffle 128-bits (composed of 2 64-bit integers) selected by imm8 from a and b, and store the results in dst.

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