Add benchmarks for Vec to compare to SmallVec

benches/bench.rs

@@ -130,3 +130,99 @@ fn bench_macro_from_list(b: &mut Bencher) {
         vec
     });
 }
+#[bench]
+fn bench_push_vec(b: &mut Bencher) {
+    #[inline(never)]
+    fn push_noinline(vec: &mut Vec<u64>, x: u64) {
+        vec.push(x)
+    }
+
+    b.iter(|| {
+        let mut vec: Vec<u64> = Vec::with_capacity(16);
+        for x in 0..100 {
+            push_noinline(&mut vec, x);
+        }
+        vec
+    });
+}
+
+#[bench]
+fn bench_insert_vec(b: &mut Bencher) {
+    #[inline(never)]
+    fn insert_noinline(vec: &mut Vec<u64>, x: u64) {
+        vec.insert(0, x)
+    }
+
+    b.iter(|| {
+        let mut vec: Vec<u64> = Vec::with_capacity(16);
+        for x in 0..100 {
+            insert_noinline(&mut vec, x);
+        }
+        vec
+    });
+}
+
+#[bench]
+fn bench_extend_vec(b: &mut Bencher) {
+    b.iter(|| {
+        let mut vec: Vec<u64> = Vec::with_capacity(16);
+        vec.extend(0..100);
+        vec
+    });
+}
+
+#[bench]
+fn bench_from_slice_vec(b: &mut Bencher) {
+    let v: Vec<u64> = (0..100).collect();
+    b.iter(|| {
+        let vec: Vec<u64> = Vec::from(&v[..]);
+        vec
+    });
+}
+
+#[bench]
+fn bench_extend_from_slice_vec(b: &mut Bencher) {
+    let v: Vec<u64> = (0..100).collect();
+    b.iter(|| {
+        let mut vec: Vec<u64> = Vec::with_capacity(16);
+        vec.extend_from_slice(&v);
+        vec
+    });
+}
+
+#[bench]
+fn bench_pushpop_vec(b: &mut Bencher) {
+    #[inline(never)]
+    fn pushpop_noinline(vec: &mut Vec<u64>, x: u64) {
+        vec.push(x);
+        vec.pop();
+    }
+
+    b.iter(|| {
+        let mut vec: Vec<u64> = Vec::with_capacity(16);
+        for x in 0..100 {
+            pushpop_noinline(&mut vec, x);
+        }
+        vec
+    });
+}
+
+#[bench]
+fn bench_macro_from_elem_vec(b: &mut Bencher) {
+    b.iter(|| {
+        let vec: Vec<u64> = vec![42; 100];
+        vec
+    });
+}
+
+#[bench]
+fn bench_macro_from_list_vec(b: &mut Bencher) {
+    b.iter(|| {
+        let vec: Vec<u64> = vec![
+            0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20, 24, 32, 36, 0x40, 0x80,
+            0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000,
+            0x80000, 0x100000
+        ];
+        vec
+    });
+}