Update upstream source from tag 'upstream/1.70.0+dfsg1'

[rustc.git] / library / core / benches / tuple.rs

diff --git a/library/core/benches/tuple.rs b/library/core/benches/tuple.rs
new file mode 100644 (file)
index 0000000..d9ff9d0
--- /dev/null
+++ b/library/core/benches/tuple.rs
@@ -0,0 +1,22 @@
+use rand::prelude::*;
+use test::{black_box, Bencher};
+
+#[bench]
+fn bench_tuple_comparison(b: &mut Bencher) {
+    let mut rng = black_box(super::bench_rng());
+
+    let data = black_box([
+        ("core::iter::adapters::Chain", 123_usize),
+        ("core::iter::adapters::Clone", 456_usize),
+        ("core::iter::adapters::Copie", 789_usize),
+        ("core::iter::adapters::Cycle", 123_usize),
+        ("core::iter::adapters::Flatt", 456_usize),
+        ("core::iter::adapters::TakeN", 789_usize),
+    ]);
+
+    b.iter(|| {
+        let x = data.choose(&mut rng).unwrap();
+        let y = data.choose(&mut rng).unwrap();
+        [x < y, x <= y, x > y, x >= y]
+    });
+}