llvm.yml

name: LLVM
run-name: "${{ inputs.run_name != '' && inputs.run_name || github.workflow }}"

on: 
  workflow_dispatch:
    inputs:
      pgo:
        description: "Build llvm with PGO"
        required: false
        default: true
        type: boolean   
      no_save_cache:
        description: "Don't save caches after success build"
        required: false
        default: false
        type: boolean
      trigger_toolchain:
        description: "Trigger toolchain build action after success build"
        required: false
        default: false
        type: boolean
      build_target:
        description: "Toolchain build target"
        required: false
        default: "all-64bit"
        type: choice
        options:
        - 64bit-v3
        - 64bit-v4
        - aarch64
        - all-64bit
        - all
      trigger_build:
        description: "Trigger mpv build action after toolchain build"
        required: false
        default: false
        type: boolean
      release:
        description: "Publish a release after mpv build"
        required: false
        default: false
        type: boolean
      run_name:
        description: 'The name displayed in the list of workflow runs'
        required: false

jobs:
  build_llvm:
    name: Build LLVM
    runs-on: ubuntu-latest
    container:
      image: cachyos/cachyos-v3:latest
    steps:
      - name: suffix
        id: suffix
        run: |
          cache_suffix="$(date "+%Y-%m-%d")-${{ github.run_id }}-${{ github.run_attempt }}"
          echo "cache_suffix=$cache_suffix" >> "$GITHUB_OUTPUT"
      - name: Install Dependencies
        run: |
          sudo bash -c 'yes y|pacman -Syu'
          sudo bash -c 'yes y|pacman -Sy --needed base-devel dash zlib-ng-compat git ninja cmake meson wget mimalloc go ccache bin-cpuflags-x86'
          mkdir -p /home/opt/7zip
          wget -qO - https://www.7-zip.org/a/7z2301-linux-x64.tar.xz | tar -xJf - -C /home/opt/7zip 7zzs
          sudo ln -s /home/opt/7zip/7zzs /usr/bin/7z
          git config --global user.name "github-actions[bot]"
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --global pull.rebase true
          git config --global rebase.autoStash true
          git config --global fetch.prune true
          sudo GOBIN=/usr/bin go install go.chromium.org/luci/cipd/client/cmd/...@latest
          sudo cipd install fuchsia/third_party/clang/linux-amd64 latest -root /usr/local/fuchsia-clang
          echo "PATH=/usr/local/fuchsia-clang/bin:$PATH" >> $GITHUB_ENV
      - uses: actions/checkout@v4
      - name: Checkout toolchain
        uses: actions/checkout@v4
        with:
          repository: Andarwinux/mpv-winbuild-cmake
          path: mpv-winbuild-cmake
          fetch-depth: 0

      - name: Build LLVM
        uses: ./action/build_toolchain
        with:
          bit: "64-v4"
          compiler: "clang"
          command: "ninja -C $buildroot/build$bit toolchain-download || true ; ninja -C $buildroot/build$bit toolchain-download && ninja -C $buildroot/build$bit llvm-host-libcxx && ninja -C $buildroot/build$bit llvm && ninja -C $buildroot/build$bit toolchain-fullclean"
          extra_option: "${{ inputs.pgo && '-DCREL_AVAILABLE=OFF -DCUSTOM_LIBCXX=ON -DCUSTOM_COMPILER_RT=OFF -DLLVM_ENABLE_PGO=GEN -DLLVM_ENABLE_LTO=Thin -DLLVM_PROFILE_DATA_DIR=$PWD/profiles/ -DTOOLCHAIN_FLAGS=-mno-sse4a'}}"

      - name: Training LLVM
        uses: ./action/build_toolchain
        if: ${{ inputs.pgo }}
        with:
          bit: "64-v4"
          compiler: "clang"
          command: "ninja -C $buildroot/build$bit rebuild_cache && ninja -C $buildroot/build$bit toolchain-download && ninja -C $buildroot/build$bit llvm-clang && ninja -C $buildroot/build$bit aria2"
          extra_option: "-DCREL_AVAILABLE=OFF -DCUSTOM_LIBCXX=ON -DCUSTOM_COMPILER_RT=OFF -DLLVM_ENABLE_PGO=GEN -DLLVM_ENABLE_LTO=Thin -DCLANG_PACKAGES_LTO=ON -DENABLE_CCACHE=ON -DLLVM_PROFILE_DATA_DIR=$buildroot/profiles/ -DTOOLCHAIN_FLAGS=-mno-sse4a"

      - name: Merging profdata
        if: ${{ inputs.pgo }}
        run: |
          shopt -s globstar
          cd mpv-winbuild-cmake/profiles/
          ls -R
          llvm-profdata merge *.profraw -o ../llvm.profdata
          rm -rf ./{*,.*} || true

      - name: Build LLVM with PGO
        uses: ./action/build_toolchain
        if: ${{ inputs.pgo }}
        with:
          bit: "64-v4"
          compiler: "clang"
          command: "ninja -C $buildroot/build$bit toolchain-fullclean && ninja -C $buildroot/build$bit llvm-host-compiler-rt-builtin && ninja -C $buildroot/build$bit llvm-host-libcxx && ninja -C $buildroot/build$bit llvm && rm -rf clang_root/llvm-thinlto || true"
          extra_option: "-DCREL_AVAILABLE=OFF -DCUSTOM_LIBCXX=ON -DCUSTOM_COMPILER_RT=ON -DLLVM_ENABLE_PGO=USE -DLLVM_ENABLE_LTO=Thin -DLLVM_PROFDATA_FILE=$buildroot/llvm.profdata -DTOOLCHAIN_FLAGS=-mno-sse4a"

      - name: Test
        run: |
          file mpv-winbuild-cmake/clang_root/llvmbin/llvm
          ldd mpv-winbuild-cmake/clang_root/llvmbin/llvm
          ls -alh mpv-winbuild-cmake/clang_root/llvmbin/llvm
          bin-cpuflags-x86 -d mpv-winbuild-cmake/clang_root/llvmbin/llvm
          llvm-readobj --headers --notes mpv-winbuild-cmake/clang_root/llvmbin/llvm
          ./mpv-winbuild-cmake/clang_root/llvmbin/llvm clang -v

      - name: Save llvm cache
        uses: actions/cache/save@v4.2.0
        if: ${{ !inputs.no_save_cache }}
        with: 
          path: |
            mpv-winbuild-cmake/clang_root
          key: llvm-${{ steps.suffix.outputs.cache_suffix }}

      - name: Collect logs
        if: ${{ always() }}
        run: |
          sudo 7z a logs.7z $(find mpv-winbuild-cmake -type f -iname "*-*.log")
      - name: upload logs
        uses: actions/upload-artifact@v4
        if: ${{ always() }}
        with:
          name: llvm_logs
          path: logs.7z
      - name: "release llvm"
        uses: ncipollo/release-action@v1
        with:
          prerelease: false
          artifacts: mpv-winbuild-cmake/clang_root/llvmbin/llvm
          replacesArtifacts: true
          tag: llvm
          name: llvm
          allowUpdates: true
          token: ${{ secrets.GITHUB_TOKEN }}


  trigger:
    needs: [build_llvm]
    if: ${{ always() && inputs.trigger_toolchain && !inputs.no_save_cache && !contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') }}
    runs-on: ubuntu-latest
    permissions:
      actions: write

    steps:
      - name: Trigger Toolchain build workflow
        uses: actions/github-script@v7
        with:
          retries: 3
          script: |
            const repo="${{github.repository}}".split('/')[1];
            await github.rest.actions.createWorkflowDispatch({
              owner: '${{github.repository_owner}}',
              repo,
              ref: '${{github.ref}}',
              workflow_id: 'toolchain.yml',
              inputs: {
                build_target: "${{ inputs.build_target }}",
                compiler: "clang",
                trigger_build: ${{ inputs.trigger_build }},
                release: ${{ inputs.release }},
                run_name: `CI Build: llvm update`
              }
            })