Function llfn_attrs_from_instance

pub(crate) fn llfn_attrs_from_instance<'ll, 'tcx>(
    cx: &CodegenCx<'ll, 'tcx>,
    llfn: &'ll Value,
    instance: Instance<'tcx>,
)

Helper for FnAbi::apply_attrs_llfn: Composite function which sets LLVM attributes for function depending on its AST (#[attribute]) attributes.