1 files changed, 84 insertions, 0 deletions
diff --git a/third_party/rust/unic-langid-impl/benches/langid.rs b/third_party/rust/unic-langid-impl/benches/langid.rs
new file mode 100644
index 0000000000..026c288602
--- /dev/null
+++ b/third_party/rust/unic-langid-impl/benches/langid.rs
@@ -0,0 +1,84 @@
+use criterion::black_box;
+use criterion::criterion_group;
+use criterion::criterion_main;
+use criterion::Criterion;
+use criterion::Fun;
+
+use unic_langid_impl::subtags;
+use unic_langid_impl::LanguageIdentifier;
+
+static STRINGS: &[&str] = &[
+    "en-US",
+    "en-GB",
+    "es-AR",
+    "it",
+    "zh-Hans-CN",
+    "de-AT",
+    "pl",
+    "fr-FR",
+    "de-AT",
+    "sr-Cyrl-SR",
+    "nb-NO",
+    "fr-FR",
+    "mk",
+    "uk",
+    "en-US",
+    "en-GB",
+    "es-AR",
+    "th",
+    "de",
+    "zh-Cyrl-HN",
+    "en-Latn-US",
+];
+
+fn language_identifier_construct_bench(c: &mut Criterion) {
+    let langids: Vec<LanguageIdentifier> = STRINGS
+        .iter()
+        .map(|s| -> LanguageIdentifier { s.parse().unwrap() })
+        .collect();
+
+    let funcs = vec![
+        Fun::new("from_str", |b, _| {
+            b.iter(|| {
+                for s in STRINGS {
+                    let _: Result<LanguageIdentifier, _> = black_box(s).parse();
+                }
+            })
+        }),
+        Fun::new("from_bytes", |b, _| {
+            let slices: Vec<&[u8]> = STRINGS.iter().map(|s| s.as_bytes()).collect();
+            b.iter(|| {
+                for s in &slices {
+                    let _ = LanguageIdentifier::from_bytes(black_box(s));
+                }
+            })
+        }),
+        Fun::new("from_parts", |b, langids: &Vec<LanguageIdentifier>| {
+            let entries: Vec<(
+                subtags::Language,
+                Option<subtags::Script>,
+                Option<subtags::Region>,
+                Vec<subtags::Variant>,
+            )> = langids
+                .iter()
+                .cloned()
+                .map(|langid| langid.into_parts())
+                .collect();
+            b.iter(|| {
+                for (language, script, region, variants) in &entries {
+                    let _ = LanguageIdentifier::from_parts(
+                        language.clone(),
+                        script.clone(),
+                        region.clone(),
+                        variants,
+                    );
+                }
+            })
+        }),
+    ];
+
+    c.bench_functions("language_identifier_construct", funcs, langids);
+}
+
+criterion_group!(benches, language_identifier_construct_bench,);
+criterion_main!(benches);