perf: cibench workflow

.github/workflows/cibench.yml

@@ -0,0 +1,108 @@
+name: CI Benchmarks
+on:
+  pull_request:
+    branches: [master]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: "-C target-cpu=native"
+
+jobs:
+  benchmark:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse -- --save-baseline master
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse -- --save-baseline pr
+
+      - name: Compare benchmarks
+        run: |
+          critcmp master pr-${{ github.event.pull_request.number }}
+
+  benchmark-simd:
+    name: Run SIMD benchmarks
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        feature: [swar, sse42, avx2]
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse --features ${{ matrix.feature }} -- --save-baseline master-${{ matrix.feature }}
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse --features ${{ matrix.feature }} -- --save-baseline pr-${{ matrix.feature }}
+
+      - name: Compare benchmarks
+        run: |
+          critcmp master-${{ matrix.feature }} pr-${{ matrix.feature }}-${{ github.event.pull_request.number }}
+
+  benchmark-aarch64:
+    name: Run aarch64/neon benchmarks
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Install critcmp
+        run: cargo install critcmp
+
+      - name: Run benchmarks (master)
+        run: |
+          git checkout master
+          cargo bench --bench parse --features neon -- --save-baseline master-aarch64
+
+      - name: Run benchmarks (PR)
+        run: |
+          git checkout ${{ github.event.pull_request.head.sha }}
+          cargo bench --bench parse --features neon -- --save-baseline pr-aarch64
+
+      - name: Compare benchmarks
+        run: |
+          critcmp master-aarch64 pr-aarch64-${{ github.event.pull_request.number }}