Function rustc_query_system::query::plumbing::ensure_must_run
source · fn ensure_must_run<Q, Qcx>(
query: Q,
qcx: Qcx,
key: &Q::Key,
check_cache: bool
) -> (bool, Option<DepNode>)where
Q: QueryConfig<Qcx>,
Qcx: QueryContext,
Expand description
Ensure that either this query has all green inputs or been executed.
Executing query::ensure(D)
is considered a read of the dep-node D
.
Returns true if the query should still run.
This function is particularly useful when executing passes for their side-effects – e.g., in order to report errors for erroneous programs.
Note: The optimization is only available during incr. comp.