Created a run with cachegrind benchmark

.github/workflows/benchmark-cachegrind.yml

@@ -0,0 +1,94 @@
+name: Luau Benchmarks (CacheGrind)
+
+on:
+  pull_request:
+    paths-ignore:
+      - "docs/**"
+      - "papers/**"
+      - "rfcs/**"
+      - "*.md"
+      - "prototyping/**"
+
+jobs:
+  benchmarks-run:
+    name: Run ${{ matrix.bench.title }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        engine:
+          - { channel: stable, version: latest, runner: "robloxdev-cli" }
+          # - { channel: develop, version: latest, runner: 'robloxdev-cli' }
+          # covers environment closest to RobloxStudio, but not available on Linux
+          # - { channel: develop, version: latest, runner: 'roblox-cli'}
+        bench:
+          - {
+              script: "run-benchmarks",
+              timeout: 12,
+              title: "Luau Benchmarks",
+              cachegrindTitle: "Performance",
+              cachegrindIterCount: 20,
+            }
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Build Luau
+        run: make config=release luau luau-analyze
+
+      - uses: actions/setup-python@v3
+        with:
+          python-version: "3.9"
+          architecture: "x64"
+
+      - name: Install requests
+        run: python -m pip install requests && pwd
+
+      - name: Run benchmark
+        run: |
+          python bench/bench.py | tee ../${{ matrix.bench.script }}-output.txt
+
+      - name: Run ${{ matrix.bench.title }} (Cold Cachegrind)
+        run: ./scripts/run-with-cachegrind.sh ./${{ matrix.engine.runner }} scripts/${{ matrix.bench.script }}.lua "${{ matrix.bench.cachegrindTitle}}Cold" 1 | tee -a ${{ matrix.bench.script }}-output.txt
+
+      - name: Run ${{ matrix.bench.title }} (Warm Cachegrind)
+        run: ./scripts/run-with-cachegrind.sh ./${{ matrix.engine.runner }} scripts/${{ matrix.bench.script }}.lua "${{ matrix.bench.cachegrindTitle }}" ${{ matrix.bench.cachegrindIterCount }} | tee -a ${{ matrix.bench.script }}-output.txt
+
+      - name: Navigate to root dir, create gh-pages dir then navigate into it
+        run: cd .. && mkdir gh-pages && cd gh-pages
+
+      - name: Switch to & checkout gh-pages repo
+        uses: actions/checkout@v3
+        with:
+          repository: AllanJeremy/luau-benchmark-results
+          ref: "main"
+
+      - name: Checkout gh-pages
+        run: |
+          git status
+          git fetch --no-tags --depth=1 origin main
+          git checkout main
+          git pull
+          git status
+
+      - name: Navigate back to luau before checking out original repo
+        run: cd ..
+
+      #Run `github-action-benchmark` action
+      - name: Store ${{ matrix.bench.title }} result
+        uses: Roblox/rhysd-github-action-benchmark@v-luau
+        with:
+          name: ${{ matrix.bench.title }}
+          tool: "benchmarkluau"
+          # This should come from Luau repo
+          output-file-path: ../${{ matrix.bench.script }}-output.txt
+
+          # This should map to thebenchmark results repo
+          external-data-json-path: ../gh-pages/dev/bench/data.json
+          alert-threshold: 150%
+          fail-threshold: 200%
+          fail-on-alert: true
+          comment-on-alert: true
+          comment-always: true
+          github-token: ${{ secrets.GITHUB_TOKEN }}