From d7fdd9065544bc6819ec34b61c93fd9674d8db8f Mon Sep 17 00:00:00 2001
From: The8472 <git@infinite-source.de>
Date: Thu, 18 Mar 2021 00:02:39 +0100
Subject: [PATCH] add bench

---
 library/core/benches/slice.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/library/core/benches/slice.rs b/library/core/benches/slice.rs
index dbab00856863b..04efa52078778 100644
--- a/library/core/benches/slice.rs
+++ b/library/core/benches/slice.rs
@@ -114,3 +114,16 @@ rotate!(rotate_16_usize_4, 16, |i| [i; 4]);
 rotate!(rotate_16_usize_5, 16, |i| [i; 5]);
 rotate!(rotate_64_usize_4, 64, |i| [i; 4]);
 rotate!(rotate_64_usize_5, 64, |i| [i; 5]);
+
+#[bench]
+fn fill_byte_sized(b: &mut Bencher) {
+    #[derive(Copy, Clone)]
+    struct NewType(u8);
+
+    let mut ary = [NewType(0); 1024];
+
+    b.iter(|| {
+        let slice = &mut ary[..];
+        black_box(slice.fill(black_box(NewType(42))));
+    });
+}