feat: install codspeed

Author: art049

.github/workflows/codspeed.yml

@@ -0,0 +1,52 @@
+name: CodSpeed Benchmarks
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  benchmarks:
+    name: Run benchmarks
+    runs-on: codspeed-macro
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.83.0
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: ~/.cargo/registry
+          key: cargo-registry-${{ runner.arch }}-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            cargo-registry-${{ runner.arch }}-
+
+      - name: Cache target directory
+        uses: actions/cache@v4
+        with:
+          path: target
+          key: cargo-target-${{ runner.arch }}-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            cargo-target-${{ runner.arch }}-
+
+      - name: Install cargo-codspeed
+        run: cargo install cargo-codspeed --locked
+
+      - name: Build benchmarks
+        run: cargo codspeed build
+
+      - name: Run benchmarks
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: walltime
+          run: cargo codspeed run

.gitignore

@@ -12,3 +12,4 @@ Cargo.lock
 # OS files
 .DS_Store
 Thumbs.db
+target

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 
 [dev-dependencies]
-divan = "0.1"
+divan = { package = "codspeed-divan-compat", version = "4.2.1" }
 
 [[bench]]
 name = "particle_simulation"