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Lines Matching refs:is_null

93   if (cluster.is_null()) return;
246   if (eq.is_null()) eq = cluster;
271   if (!coarser_->GetCoarseEquivalent(cluster).is_null()) return;
304   if (eq.is_null()) return;
352   ASSERT(!is_null());
373   if (!is_null()) {
456   if (!eq.is_null()) {
498   return !eq.is_null
546   if (ref_cluster.is_null()) return;
558   if (cluster.is_null()) return;