protocol-circuits-gate-diff.yml

name: Report gates diff

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  compare_protocol_circuits_gates:
    concurrency:
      group: compare_protocol_circuits_gates-${{ github.ref_name == 'master' && github.run_id || github.ref_name }}
      cancel-in-progress: true
    if: "!startsWith(github.head_ref, 'release-please--')"
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3

      - name: Install bleeding edge cmake
        run: |
          sudo apt -y remove --purge cmake
          sudo snap install cmake --classic

      - name: Create Build Environment
        run: |
          sudo apt-get update
          sudo apt-get -y install ninja-build

      - name: Install Clang16
        run: |
          wget https://github.com/llvm/llvm-project/releases/download/llvmorg-16.0.0/clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz
          tar -xvf clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz
          sudo cp clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04/bin/* /usr/local/bin/
          sudo cp -r clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04/include/* /usr/local/include/
          sudo cp -r clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04/lib/* /usr/local/lib/
          sudo cp -r clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04/share/* /usr/local/share/
          rm -rf clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz clang+llvm-16.0.0-x86_64-linux-gnu-ubuntu-18.04

      - uses: actions/cache@v3
        with:
          path: |
            barretenberg/cpp/build
            barretenberg/cpp/build-wasm
            barretenberg/cpp/build-threads
          key: ${{ runner.os }}-bb-build

      - name: Compile Barretenberg
        run: |
          cd barretenberg/cpp

          cmake --preset default -DCMAKE_CXX_FLAGS="-stdlib=libc++" -DCMAKE_BUILD_TYPE=RelWithAssert -DTARGET_ARCH=westmere
          cmake --build --preset default --target bb

      - name: Install noirup
        run: |
          curl -L $INSTALL_URL | bash
          echo "${HOME}/.nargo/bin" >> $GITHUB_PATH
        env:
          INSTALL_URL: https://raw.githubusercontent.com/noir-lang/noirup/main/install
          NOIRUP_BIN_URL: https://raw.githubusercontent.com/noir-lang/noirup/main/noirup

      - uses: actions/cache@v3
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
          key: ${{ runner.os }}-cargo

      - name: Install Barretenberg dependencies
        run: sudo apt update && sudo apt install clang lld cmake libomp-dev

      - name: Install nargo from source with noirup
        run: noirup $toolchain
        env:
          toolchain: --path ./noir/noir-repo

      - name: Check nargo installation
        run: nargo --version

      - name: Generate gates report
        working-directory: ./noir-projects/noir-protocol-circuits
        run: |
          nargo info --json --silence-warnings > protocol_circuits_report.json
          mv protocol_circuits_report.json ../../protocol_circuits_report.json
        env:
          NARGO_BACKEND_PATH: ../../barretenberg/cpp/build/bin/bb

      - name: Compare gates reports
        id: gates_diff
        uses: TomAFrench/noir-gates-diff@df05f34e2ab275ddc4f2cac065df1c88f8a05e5d
        with:
          report: protocol_circuits_report.json
          summaryQuantile: 0 # Display any diff in gate count

      - 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 }}