perf: do not reallocate Vecs in cleanup_selector

1 files changed, 5 insertions, 4 deletions

diff --git a/src/grossmeister/move_selector.rs b/src/grossmeister/move_selector.rs
index c55051e..08e5cf1 100644
--- a/src/grossmeister/move_selector.rs
+++ b/src/grossmeister/move_selector.rs
@@ -86,10 +86,11 @@ impl Grossmeister {
     }
 
     pub fn cleanup_selector(&mut self) {
-        // Keep the killers!
-        let killers = self.move_selector().killer_moves.clone();
-        *self.move_selector() = MoveSelector::default();
-        self.move_selector().killer_moves = killers;
+        let selector = self.move_selector();
+        selector.tactical_moves.clear();
+        selector.stage_moves.moves.clear();
+        selector.stage_moves.index = 0;
+        selector.stage = MoveGenStage::default();
     }
 
     /// Register killer for ply-before