--- old/src/hotspot/share/gc/z/zRelocationSetSelector.cpp	2020-01-21 12:40:44.977180594 +0100
+++ new/src/hotspot/share/gc/z/zRelocationSetSelector.cpp	2020-01-21 12:40:44.457170043 +0100
@@ -220,3 +220,11 @@
   relocation_set->populate(_medium.selected(), _medium.nselected(),
                            _small.selected(), _small.nselected());
 }
+
+ZRelocationSetSelectorStats ZRelocationSetSelector::stats() const {
+  ZRelocationSetSelectorStats stats;
+  stats._small = _small.stats();
+  stats._medium = _medium.stats();
+  stats._large = _large.stats();
+  return stats;
+}