[Tarantool-patches] [PATCH luajit 2/3] ci: introduce workflow for exotic builds

[Sergey Kaplun via Tarantool-patches <tarantool-patches@dev.tarantool.org>]

This workflow is well-suited for test specific builds like dual-number
mode on x86_x64, build with disabled JIT or FFI, etc.

For now, just the dual-number mode is added, due to the need to test
future commits. If there is need to add a new build type `FLAVOR` column
of CI matrix should be exposed. Also, just Linux x86_64 is tested,
because we want to decrease resource usage in CI.
---
 .github/workflows/exotic-builds-testing.yml | 71 +++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 .github/workflows/exotic-builds-testing.yml

diff --git a/.github/workflows/exotic-builds-testing.yml b/.github/workflows/exotic-builds-testing.yml
new file mode 100644
index 00000000..cd0c14d7
--- /dev/null
+++ b/.github/workflows/exotic-builds-testing.yml
@@ -0,0 +1,71 @@
+name: "Exotic builds 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-1.10, tarantool-2.8,
+  # 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: ${{ (
+    github.ref == 'refs/heads/tarantool' ||
+    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-x86_64-exotic:
+    strategy:
+      fail-fast: false
+      matrix:
+        BUILDTYPE: [Debug, Release]
+        GC64: [ON, OFF]
+        FLAVOR: [dualnum]
+        include:
+          - BUILDTYPE: Debug
+            CMAKEFLAGS: -DCMAKE_BUILD_TYPE=Debug -DLUA_USE_ASSERT=ON -DLUA_USE_APICHECK=ON
+          - BUILDTYPE: Release
+            CMAKEFLAGS: -DCMAKE_BUILD_TYPE=RelWithDebInfo
+          - FLAVOR: dualnum
+            FLAVORFLAGS: -DLUAJIT_NUMMODE=2
+    runs-on: [self-hosted, regular, Linux, x86_64]
+    name: >
+      LuaJIT ${{ matrix.FLAVOR }}
+      (Linux/x86_64)
+      ${{ matrix.BUILDTYPE }}
+      GC64:${{ matrix.GC64 }}
+    steps:
+      - uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+      - name: setup Linux
+        uses: ./.github/actions/setup-linux
+      - name: configure
+        run: >
+          cmake -S . -B ${{ env.BUILDDIR }}
+          -G Ninja
+          ${{ matrix.CMAKEFLAGS }}
+          ${{ matrix.FLAVORFLAGS }}
+          -DLUAJIT_ENABLE_GC64=${{ matrix.GC64 }}
+      - name: build
+        run: cmake --build . --parallel
+        working-directory: ${{ env.BUILDDIR }}
+      - name: test
+        run: cmake --build . --parallel --target test
+        working-directory: ${{ env.BUILDDIR }}
-- 
2.34.1