avx512-build-testing.yml

name: "AVX512 build testing"

on:
  push:
    branches-ignore:
      - '**-notest'
      - 'upstream-**'
    tags-ignore:
      - '**'

concurrency:
  # An update of a developer branch cancels the previously
  # scheduled workflow run for this branch. However, the default
  # branch, and long-term branch (tarantool/release/2.11,
  # tarantool/release/2.10, etc) workflow runs are never canceled.
  #
  # We use a trick here: define the concurrency group as 'workflow
  # run ID' + # 'workflow run attempt' because it is a unique
  # combination for any run. So it effectively discards grouping.
  #
  # XXX: we cannot use `github.sha` as a unique identifier because
  # pushing a tag may cancel a run that works on a branch push
  # event.
  group: ${{ startsWith(github.ref, 'refs/heads/tarantool/')
    && format('{0}-{1}', github.run_id, github.run_attempt)
    || format('{0}-{1}', github.workflow, github.ref) }}
  cancel-in-progress: true

jobs:
  test-avx512:
    name: LuaJIT AVX512 build testing
    strategy:
      fail-fast: false
    runs-on: [self-hosted, regular, x86_64, Linux]
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: recursive
      - name: Detect a presence of AVX512
        id: avx512_script
        run: |
          # Set the avx512_support environment variable to an exit
          # code returned by `grep`. The exit status of `grep` is
          # 0 if lines were found, 1 if no lines were found, and 2
          # if an error occurred.
          avx512_support=$(grep avx512f /proc/cpuinfo 2>&1 > /dev/null; echo $?)
          echo "avx512_support=$avx512_support" >> $GITHUB_OUTPUT
        shell: bash
      - name: setup Linux
        uses: ./.github/actions/setup-linux
      - name: configure
        if: needs.avx512_script.outputs.avx512_support == 0
        run: >
          cmake -S . -B ${{ env.BUILDDIR }}
          -G Ninja
          -DCMAKE_BUILD_TYPE=Debug
          -DCMAKE_C_FLAGS=-march=skylake-avx512
      - name: build
        if: needs.avx512_script.outputs.avx512_support == 0
        run: cmake --build ${{ env.BUILDDIR }} --parallel
      - name: run regression tests
        if: needs.avx512_script.outputs.avx512_support == 0
        run: cmake --build ${{ env.BUILDDIR }} --parallel --target LuaJIT-test