Function sanitize_attrs 

pub(crate) fn sanitize_attrs<'ll, 'tcx>(
    cx: &GenericCx<'ll, SCx<'ll>>,
    tcx: TyCtxt<'tcx>,
    no_sanitize: SanitizerSet,
) -> SmallVec<[&'ll Attribute; 4]>

Get LLVM sanitize attributes.