Function rustc_query_impl::make_query::live_symbols_and_ignored_derived_traits

pub fn live_symbols_and_ignored_derived_traits<'tcx>(
    tcx: QueryCtxt<'tcx>,
    key: live_symbols_and_ignored_derived_traits<'tcx>
) -> QueryStackFrame

Return the live symbols in the crate for dead code check.

The second return value maps from ADTs to ignored derived traits (e.g. Debug and Clone) and their respective impl (i.e., part of the derive macro)