1 files changed, 40 insertions, 0 deletions
diff --git a/third_party/rust/fluent-langneg/benches/negotiate.rs b/third_party/rust/fluent-langneg/benches/negotiate.rs
new file mode 100644
index 0000000000..2ca70d59ec
--- /dev/null
+++ b/third_party/rust/fluent-langneg/benches/negotiate.rs
@@ -0,0 +1,40 @@
+use criterion::criterion_group;
+use criterion::criterion_main;
+use criterion::Criterion;
+
+use fluent_langneg::convert_vec_str_to_langids_lossy;
+use fluent_langneg::negotiate_languages;
+
+use unic_langid::LanguageIdentifier;
+
+#[no_mangle]
+#[inline(never)]
+fn do_negotiate<'a>(
+    requested: &[LanguageIdentifier],
+    available: &'a [LanguageIdentifier],
+) -> Vec<&'a LanguageIdentifier> {
+    negotiate_languages(
+        requested,
+        available,
+        None,
+        fluent_langneg::NegotiationStrategy::Filtering,
+    )
+}
+
+fn negotiate_bench(c: &mut Criterion) {
+    let requested = &["de", "it", "ru"];
+    let available = &[
+        "en-US", "fr", "de", "en-GB", "it", "pl", "ru", "sr-Cyrl", "sr-Latn", "zh-Hant", "zh-Hans",
+        "ja-JP", "he-IL", "de-DE", "de-IT",
+    ];
+
+    let requested = convert_vec_str_to_langids_lossy(requested);
+    let available = convert_vec_str_to_langids_lossy(available);
+
+    c.bench_function("negotiate", |b| {
+        b.iter(|| do_negotiate(&requested, &available))
+    });
+}
+
+criterion_group!(benches, negotiate_bench);
+criterion_main!(benches);