Function llvmint::x86::avx512_mask_expand_load_pd_256

pub unsafe extern "C" fn avx512_mask_expand_load_pd_256(
    a: *mut i8, 
    b: f64x4, 
    c: i8
) -> f64x4

The llvm.x86.avx512.mask.expand.load.pd.256 intrinsic; known as __builtin_ia32_expandloaddf256_mask in GCC.