bazelBuildAndTestLlvm.yml

# Licensed under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
# Also available under a BSD-style license. See LICENSE.

name: Bazel Build and Test (llvm-project)

# Only run when llvm-project hash changes (deps.bzl)
on:
  pull_request:
    branches:
      - main
    paths:
      - 'deps.bzl'
  push:
    branches:
      - main
    paths:
      - 'deps.bzl'
  workflow_dispatch:

# Ensure that only a single job or workflow using the same
# concurrency group will run at a time. This would cancel
# any in-progress jobs in the same github workflow and github
# ref (e.g. refs/heads/main or refs/pull/<pr_number>/merge).
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true


jobs:
  ubuntu-build:
    name: ubuntu-x86_64 / llvm-project
    runs-on: ubuntu-latest

    steps:
    - name: Checkout mlir-tcp
      uses: actions/checkout@v3

    # Continually update cache even if there's a "hit" during
    # restore to avoid the cache going stale over time
    # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#update-a-cache
    - name: Setup cache for bazel
      uses: actions/cache@v3
      with:
        path: ~/.cache/bazel
        key: llvm-project-bazel-build-cache-${{ runner.os }}-${{ github.sha }}
        restore-keys: |
          llvm-project-bazel-build-cache-${{ runner.os }}

    # Change bazel cache directory to root ownership
    # to allow writing to it from within the docker container.
    # If no cache hits, this directory is not present
    # so don't run chown (will error otherwise).
    - name: Set bazel cache permissions
      run: |
        if [ -d "${HOME}/.cache/bazel" ]; then
          sudo chown -R root:root "${HOME}/.cache/bazel"
        fi

    - name: Build docker image
      run: |
        docker build -f docker/Dockerfile \
                     -t mlir-tcp:ci \
                     .

    - name: Bazel build and test llvm-project
      run: |
        docker run --rm \
                   -v "$(pwd)":"/opt/src/mlir-tcp" \
                   -v "${HOME}/.cache/bazel":"/root/.cache/bazel" \
                   mlir-tcp:ci \
                   bazel test --config=clang_linux @llvm-project//mlir/...

    # Switch back bazel cache directory to user ownership
    # to allow GHA post-cache step to save cache without
    # permissions issue.
    - name: Switch bazel cache permissions
      run: |
        if [ -d "${HOME}/.cache/bazel" ]; then
          sudo chown -R "$USER":"$USER" "${HOME}/.cache/bazel"
        fi