Function `_mm_mask2_permutex2var_pd`

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub fn _mm_mask2_permutex2var_pd(a: __m128d, idx: __m128i, k: __mmask8, b: __m128d) -> __m128d

Shuffle double-precision (64-bit) floating-point elements in a and b across lanes using the corresponding selector and index in idx, and store the results in dst using writemask k (elements are copied from idx when the corresponding mask bit is not set)

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