name: LLVM Project Tests

permissions:
  contents: read

on:
  workflow_dispatch:
    inputs:
      build_target:
        required: false
      projects:
        required: false
      extra_cmake_args:
        required: false
      os_list:
        required: false
        default: '["ubuntu-latest", "windows-2019", "macOS-13"]'
      python_version:
        required: false
        type: string
        default: '3.11'
  workflow_call:
    inputs:
      build_target:
        required: false
        type: string
        default: "all"

      projects:
        required: true
        type: string

      extra_cmake_args:
        required: false
        type: string

      os_list:
        required: false
        type: string
        # Use windows-2019 due to:
        # https://developercommunity.visualstudio.com/t/Prev-Issue---with-__assume-isnan-/1597317
        # Use ubuntu-22.04 rather than ubuntu-latest to match the ubuntu
        # version in the CI container. Without this, setup-python tries
        # to install a python version linked against a newer version of glibc.
        # TODO(boomanaiden154): Bump the Ubuntu version once the version in the
        # container is bumped.
        default: '["ubuntu-22.04", "windows-2019", "macOS-13"]'

      python_version:
        required: false
        type: string
        default: '3.11'

concurrency:
  # Skip intermediate builds: always.
  # Cancel intermediate builds: only if it is a pull request build.
  # If the group name here is the same as the group name in the workflow that includes
  # this one, then the action will try to wait on itself and get stuck.
  group: llvm-project-${{ github.workflow }}-${{ inputs.projects }}${{ github.ref }}
  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}

jobs:
  lit-tests:
    name: Lit Tests
    runs-on: ${{ matrix.os }}
    container:
      image: ${{(startsWith(matrix.os, 'ubuntu') && 'ghcr.io/llvm/ci-ubuntu-22.04:latest') || null}}
      volumes:
        - /mnt/:/mnt/
    strategy:
      fail-fast: false
      matrix:
        os: ${{ fromJSON(inputs.os_list) }}
    steps:
      - name: Setup Windows
        if: startsWith(matrix.os, 'windows')
        uses: llvm/actions/setup-windows@main
        with:
          arch: amd64
      # On Windows, starting with win19/20220814.1, cmake choose the 32-bit
      # python3.10.6 libraries instead of the 64-bit libraries when building
      # lldb.  Using this setup-python action to make 3.10 the default
      # python fixes this.
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ inputs.python_version }}
      - name: Install Ninja
        if: runner.os != 'Linux'
        uses: llvm/actions/install-ninja@main
      # actions/checkout deletes any existing files in the new git directory,
      # so this needs to either run before ccache-action or it has to use
      # clean: false.
      - uses: actions/checkout@v4
        with:
          fetch-depth: 250
      - name: Setup ccache
        uses: hendrikmuhs/ccache-action@v1
        with:
          # A full build of llvm, clang, lld, and lldb takes about 250MB
          # of ccache space. There's not much reason to have more than this,
          # because we usually won't need to save cache entries from older
          # builds.  Also, there is an overall 10GB cache limit, and each
          # run creates a new cache entry so we want to ensure that we have
          # enough cache space for all the tests to run at once and still
          # fit under the 10 GB limit.
          # Default to 2G to workaround: https://github.com/hendrikmuhs/ccache-action/issues/174
          max-size: 2G
          key: ${{ matrix.os }}
          variant: sccache
      - name: Build and Test
        env:
          # Workaround for https://github.com/actions/virtual-environments/issues/5900.
          # This should be a no-op for non-mac OSes
          PKG_CONFIG_PATH: /usr/local/Homebrew/Library/Homebrew/os/mac/pkgconfig//12
        shell: bash
        id: build-llvm
        run: |
          if [ "${{ runner.os }}" == "Linux" ]; then
            builddir="/mnt/build/"
            sudo mkdir -p $builddir
            sudo chown gha $builddir
            extra_cmake_args="-DCMAKE_CXX_COMPILER=clang++ -DCMAKE_C_COMPILER=clang"
          else
            builddir="$(pwd)"/build
          fi
          if [ "${{ runner.os }}" == "macOS" ]; then
            # Workaround test failure on some lld tests on MacOS
            # https://github.com/llvm/llvm-project/issues/81967
            extra_cmake_args="-DLLVM_DISABLE_ASSEMBLY_FILES=ON"
          fi
          echo "llvm-builddir=$builddir" >> "$GITHUB_OUTPUT"
          cmake -G Ninja \
                -B "$builddir" \
                -S llvm \
                -DLLVM_ENABLE_PROJECTS="${{ inputs.projects }}" \
                -DCMAKE_BUILD_TYPE=Release \
                -DLLVM_ENABLE_ASSERTIONS=ON \
                -DLLDB_INCLUDE_TESTS=OFF \
                -DLIBCLC_TARGETS_TO_BUILD="amdgcn--;amdgcn--amdhsa;r600--;nvptx--;nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl" \
                -DCMAKE_C_COMPILER_LAUNCHER=sccache \
                -DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
                $extra_cmake_args \
                ${{ inputs.extra_cmake_args }}
          ninja -C "$builddir" '${{ inputs.build_target }}'

      - name: Build and Test libclc
        if: "!startsWith(matrix.os, 'windows') && contains(inputs.projects, 'libclc')"
        env:
          LLVM_BUILDDIR: ${{ steps.build-llvm.outputs.llvm-builddir }}
        run: |
          # The libclc tests don't have a generated check target so all we can
          # do is build it.
          ninja -C "$LLVM_BUILDDIR"