gates_report.yml

name: Report gates diff

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  build-nargo:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [x86_64-unknown-linux-gnu]

    steps:
      - name: Checkout Noir repo
        uses: actions/checkout@v4

      - name: Setup toolchain
        uses: dtolnay/rust-toolchain@1.74.1

      - uses: Swatinem/rust-cache@v2
        with:
          key: ${{ matrix.target }}
          cache-on-failure: true
          save-if: ${{ github.event_name != 'merge_group' }}

      - name: Build Nargo
        run: cargo build --package nargo_cli --release

      - name: Package artifacts
        run: |
          mkdir dist
          cp ./target/release/nargo ./dist/nargo
          7z a -ttar -so -an ./dist/* | 7z a -si ./nargo-x86_64-unknown-linux-gnu.tar.gz

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: nargo
          path: ./dist/*
          retention-days: 3


  compare_gates_reports:
    needs: [build-nargo]
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write

    steps:
      - uses: actions/checkout@v4

      - name: Install `bb`
        run: |
          ./scripts/install_bb.sh
          echo "$HOME/.bb/" >> $GITHUB_PATH

      - name: Download nargo binary
        uses: actions/download-artifact@v4
        with:
          name: nargo
          path: ./nargo

      - name: Set nargo on PATH
        run: |
          nargo_binary="${{ github.workspace }}/nargo/nargo"
          chmod +x $nargo_binary
          echo "$(dirname $nargo_binary)" >> $GITHUB_PATH
          export PATH="$PATH:$(dirname $nargo_binary)"
          nargo -V

      - name: Generate gates report
        working-directory: ./test_programs
        run: |
          ./rebuild.sh
          ./gates_report.sh
          mv gates_report.json ../gates_report.json
      
      - name: Compare gates reports
        id: gates_diff
        uses: noir-lang/noir-gates-diff@1931aaaa848a1a009363d6115293f7b7fc72bb87
        with:
          report: gates_report.json
          summaryQuantile: 0.9 # only display the 10% most significant circuit size diffs in the summary (defaults to 20%)

      - name: Add gates diff to sticky comment
        if: github.event_name == 'pull_request' || github.event_name == 'pull_request_target'
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          # delete the comment in case changes no longer impact circuit sizes
          delete: ${{ !steps.gates_diff.outputs.markdown }}
          message: ${{ steps.gates_diff.outputs.markdown }}