Function `_mm256_mask_fixupimm_pd`

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub fn _mm256_mask_fixupimm_pd(a: __m256d, k: __mmask8, b: __m256d, c: __m256i, IMM8: i32) -> __m256d

Fix up packed double-precision (64-bit) floating-point elements in a and b using packed 64-bit integers in c, and store the results in dst using writemask k (elements are copied from a when the corresponding mask bit is not set). imm8 is used to set the required flags reporting.

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