Function _load_mask64

pub unsafe fn _load_mask64(mem_addr: *const __mmask64) -> __mmask64

🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)

Available on (x86 or x86-64) and target feature avx512bw and x86-64 only.

Load 64-bit mask from memory into k.

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