sync_from_upstream.yml

# This workflow fetches changes from relevant branches from the
# llvm/llvm-project repository (upstream) into the corresponding branches
# in the arm/arm-toolchain repository (downstream), keeping them in sync.
name: Sync from Upstream LLVM
on:
  schedule:
    - cron: '0,30 * * * *'
  workflow_dispatch:
jobs:
  Fetch-Upstream:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        branch: [main, release/19.x]
    env:
      UPSTREAM_REMOTE: https://github.com/llvm/llvm-project.git
    steps:
      - name: Configure Access Token
        uses: actions/create-github-app-token@v1
        id: generate-token
        with:
          app-id: ${{ secrets.SYNC_APP_ID }}
          private-key: ${{ secrets.SYNC_APP_PRIVATE_KEY }}
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ matrix.branch }}
          token: ${{ steps.generate-token.outputs.token }}
      - name: Configure Upstream Remote
        run: git remote add upstream ${{ env.UPSTREAM_REMOTE }}
      - name: Fetch Upstream Changes
        run: git pull --ff-only upstream ${{ matrix.branch }}
      - name: Configure Git Identity
        run: |
          git config --local user.name "github-actions[bot]"
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
      - name: Push Changes
        run: git push origin ${{ matrix.branch }}