bench in-place collect of droppables

library/alloc/benches/vec.rs

@@ -501,6 +501,21 @@ fn bench_in_place_recycle(b: &mut test::Bencher) {
     });
 }
 
+#[derive(Clone)]
+struct Droppable(usize);
+
+impl Drop for Droppable {
+    fn drop(&mut self) {
+        black_box(self);
+    }
+}
+
+#[bench]
+fn bench_in_place_collect_droppable(b: &mut test::Bencher) {
+    let v: Vec<Droppable> = std::iter::repeat_with(|| Droppable(0)).take(1000).collect();
+    b.iter(|| v.clone().into_iter().skip(100).collect::<Vec<_>>())
+}
+
 #[bench]
 fn bench_chain_collect(b: &mut test::Bencher) {
     let data = black_box([0; LEN]);