1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/rust/tinystr/benches/overview.rs b/third_party/rust/tinystr/benches/overview.rs
new file mode 100644
index 0000000000..ccdd21ac40
--- /dev/null
+++ b/third_party/rust/tinystr/benches/overview.rs
@@ -0,0 +1,91 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+mod common;
+use common::*;
+
+use criterion::black_box;
+use criterion::criterion_group;
+use criterion::criterion_main;
+use criterion::Criterion;
+
+use tinystr::TinyAsciiStr;
+
+fn overview(c: &mut Criterion) {
+    let mut g = c.benchmark_group("overview");
+
+    g.bench_function("construct/TinyAsciiStr", |b| {
+        b.iter(|| {
+            for s in STRINGS_4 {
+                let _: TinyAsciiStr<4> = black_box(s).parse().unwrap();
+                let _: TinyAsciiStr<8> = black_box(s).parse().unwrap();
+                let _: TinyAsciiStr<16> = black_box(s).parse().unwrap();
+            }
+            for s in STRINGS_8 {
+                let _: TinyAsciiStr<8> = black_box(s).parse().unwrap();
+                let _: TinyAsciiStr<16> = black_box(s).parse().unwrap();
+            }
+            for s in STRINGS_16 {
+                let _: TinyAsciiStr<16> = black_box(s).parse().unwrap();
+            }
+        });
+    });
+
+    let parsed_ascii_4: Vec<TinyAsciiStr<4>> = STRINGS_4
+        .iter()
+        .map(|s| s.parse::<TinyAsciiStr<4>>().unwrap())
+        .collect();
+    let parsed_ascii_8: Vec<TinyAsciiStr<8>> = STRINGS_4
+        .iter()
+        .chain(STRINGS_8)
+        .map(|s| s.parse::<TinyAsciiStr<8>>().unwrap())
+        .collect();
+    let parsed_ascii_16: Vec<TinyAsciiStr<16>> = STRINGS_4
+        .iter()
+        .chain(STRINGS_8)
+        .chain(STRINGS_16)
+        .map(|s| s.parse::<TinyAsciiStr<16>>().unwrap())
+        .collect();
+
+    g.bench_function("read/TinyAsciiStr", |b| {
+        b.iter(|| {
+            let mut collector: usize = 0;
+            for t in black_box(&parsed_ascii_4) {
+                let s: &str = t;
+                collector += s.bytes().map(usize::from).sum::<usize>();
+            }
+            for t in black_box(&parsed_ascii_8) {
+                let s: &str = t;
+                collector += s.bytes().map(usize::from).sum::<usize>();
+            }
+            for t in black_box(&parsed_ascii_16) {
+                let s: &str = t;
+                collector += s.bytes().map(usize::from).sum::<usize>();
+            }
+            collector
+        });
+    });
+
+    g.bench_function("compare/TinyAsciiStr", |b| {
+        b.iter(|| {
+            let mut collector: usize = 0;
+            for ts in black_box(&parsed_ascii_4).windows(2) {
+                let o = ts[0].cmp(&ts[1]);
+                collector ^= o as usize;
+            }
+            for ts in black_box(&parsed_ascii_8).windows(2) {
+                let o = ts[0].cmp(&ts[1]);
+                collector ^= o as usize;
+            }
+            for ts in black_box(&parsed_ascii_16).windows(2) {
+                let o = ts[0].cmp(&ts[1]);
+                collector ^= o as usize;
+            }
+            collector
+        });
+    });
+}
+
+criterion_group!(benches, overview,);
+criterion_main!(benches);