.github/workflows/update_llvm_dependent_submodules.yml

# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Creates a PR to update all LLVM-dependent submodules to the current LLVM
# commit in the repo.

name: Synchronize LLVM Dependents

on:
  workflow_dispatch:
  schedule:
    # Every 6 hours at 0, 6, 12, 18 UTC (4, 10, 16, 22 PST)
    - cron: "0 */6 * * *"

jobs:
  update_llvm_dependents:
    # Don't run this in everyone's forks.
    if: github.repository == 'google/iree'
    runs-on: ubuntu-18.04
    steps:
      - name: Checking out repository
        uses: actions/checkout@v2
        with:
          ref: "google"
      - name: Initializing submodules
        run: ./scripts/git/submodule_versions.py init
      - name: Updating submodules
        run: ./scripts/git/update_to_llvm_syncpoint.py
      - name: Calculating SHAs
        run: |
          echo "LLVM_SHA=$(git submodule status third_party/llvm-project | awk '{print $1}' | cut -c -12)" >> $GITHUB_ENV
          echo "TF_SHA=$(git submodule status third_party/tensorflow | awk '{print $1}' | cut -c -12)" >> $GITHUB_ENV
          echo "LLVM_BAZEL_SHA=$(git submodule status third_party/llvm-bazel | awk '{print $1}' | cut -c -12)" >> $GITHUB_ENV
          echo "MLIR_HLO_SHA=$(git submodule status third_party/mlir-hlo | awk '{print $1}' | cut -c -12)" >> $GITHUB_ENV
      - name: Creating Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          # Personal token is required to trigger additional automation (e.g. presubmits).
          token: ${{ secrets.GITHUB_WRITE_ACCESS_TOKEN }}
          commit-message: "Synchronize submodules with LLVM at llvm/llvm-project@${{ env.LLVM_SHA }}"
          title: "Synchronize submodules with LLVM at llvm/llvm-project@${{ env.LLVM_SHA }}"
          body: |
            Updates LLVM dependencies to match
            [${{ env.LLVM_SHA }}](https://github.com/llvm/llvm-project/commit/${{ env.LLVM_SHA }}).
            - llvm-bazel to
              [${{ env.LLVM_BAZEL_SHA }}](https://github.com/google/llvm-bazel/commit/${{ env.LLVM_BAZEL_SHA }})
            - TensorFlow to
            [${{ env.TF_SHA }}](https://github.com/tensorflow/tensorflow/commit/${{ env.TF_SHA }})
            - MLIR-HLO to
            [${{ env.MLIR_HLO_SHA }}](https://github.com/tensorflow/mlir-hlo/commit/${MLIR_HLO_SHA?})

            `./scripts/git/update_to_llvm_syncpoint.py`

            Automated submodule bump from .github/workflows/update_llvm_dependent_submodules.yml
          author: "Submodule Update Action <iree-github-actions-bot@google.com>"
          committer: "Submodule Update Action <iree-github-actions-bot@google.com>"
          branch: "auto_submodule_update"