Function llvmint::x86::avx512_mask_vextractf64x2_256

pub unsafe extern "C" fn avx512_mask_vextractf64x2_256(
    a: f64x4, 
    b: i32, 
    c: f64x2, 
    d: i8
) -> f64x2

The llvm.x86.avx512.mask.vextractf64x2.256 intrinsic; known as __builtin_ia32_extractf64x2_256_mask in GCC.