Function llvmint::amdgcn_atomic_inc_v2i64_p0i8

pub unsafe extern "C" fn amdgcn_atomic_inc_v2i64_p0i8(
    a: *mut i8, 
    b: i64x2
) -> i64x2

The llvm.amdgcn.atomic.inc.v2i64.p0i8 intrinsic.