From 8176e4e8a80f8c5dc1e467d42436c645be0f3161 Mon Sep 17 00:00:00 2001
From: "codspeed-hq[bot]" <117304815+codspeed-hq[bot]@users.noreply.github.com>
Date: Sat, 7 Mar 2026 14:07:00 +0000
Subject: [PATCH] Add CodSpeed performance benchmarking workflow and badge

---
 .github/workflows/codspeed.yml | 37 ++++++++++++++++++++++++++++++++++
 README.md                      |  1 +
 2 files changed, 38 insertions(+)
 create mode 100644 .github/workflows/codspeed.yml

diff --git a/.github/workflows/codspeed.yml b/.github/workflows/codspeed.yml
new file mode 100644
index 0000000..4e24b27
--- /dev/null
+++ b/.github/workflows/codspeed.yml
@@ -0,0 +1,37 @@
+name: CodSpeed
+
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+  # `workflow_dispatch` allows CodSpeed to trigger backtest
+  # performance analysis in order to generate initial data.
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  codspeed:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup rust toolchain, cache and cargo-codspeed binary
+        uses: moonrepo/setup-rust@v0
+        with:
+          channel: stable
+          cache-target: release
+          bins: cargo-codspeed
+
+      - name: Build the benchmark target(s)
+        run: cargo codspeed build -m simulation
+
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: simulation
+          run: cargo codspeed run
diff --git a/README.md b/README.md
index fae06d6..5a6dc1e 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 [![Discord](https://img.shields.io/badge/discord-join-7289DA.svg?logo=discord&longCache=true&style=flat)](https://discord.gg/wQVJbvJ)
 [![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/uutils/diffutils/blob/main/LICENSE)
 [![dependency status](https://deps.rs/repo/github/uutils/diffutils/status.svg)](https://deps.rs/repo/github/uutils/diffutils)
+[![CodSpeed](https://img.shields.io/endpoint?url=https://codspeed.io/badge.json)](https://codspeed.io/uutils/diffutils?utm_source=badge)
 
 [![CodeCov](https://codecov.io/gh/uutils/diffutils/branch/main/graph/badge.svg)](https://codecov.io/gh/uutils/diffutils)