[CI] Make nightly builds with Github Actions CI (#10560)

They way release action works is that it overrides the release if ran
multiple times but doesn't update the tag. As such, manual workflow runs
could present a challenge. To deal with that, I also use short commit
hash as a suffix to ensure tag and release are in sync unless the
triggering event is schedule (which only runs once a day and doesn't
result in overwrite issue).

Author: aelovikov-intel

.github/workflows/sycl_nightly.yml

@@ -27,6 +27,10 @@ jobs:
       lts_matrix: ${{ needs.test_matrix.outputs.lts_lx_matrix }}
       lts_aws_matrix: ${{ needs.test_matrix.outputs.lts_aws_matrix }}
 
+      # We upload the build for people to download/use, override its name and
+      # prefer widespread gzip compression.
+      artifact_archive_name: sycl_linux.tar.gz
+
   ubuntu2204_opaque_pointers_build_test:
     if: github.repository == 'intel/llvm'
     uses: ./.github/workflows/sycl_linux_build_and_test.yml
@@ -48,6 +52,43 @@ jobs:
       retention-days: 90
       lts_matrix: ${{ needs.test_matrix.outputs.lts_wn_matrix }}
 
+      # We upload both Linux/Windows build via Github's "Releases"
+      # functionality, make sure Linux/Windows names follow the same pattern.
+      artifact_archive_name: sycl_windows.tar.gz
+
+  nightly_build_upload:
+    name: Nightly Build Upload
+    if: ${{ github.ref_name == 'sycl' }}
+    needs: [ubuntu2204_build_test, windows_default]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/download-artifact@v3
+      with:
+        name: sycl_linux_default
+    - uses: actions/download-artifact@v3
+      with:
+        name: sycl_windows_default
+    - name: Compute tag
+      id: tag
+      run: |
+        if [ "${{ github.event_name == 'schedule' }}" == "true" ]; then
+          echo "TAG=$(date +'%Y-%m-%d')" >> "$GITHUB_OUTPUT"
+        else
+          # TODO: Use date of the commit?
+          echo "TAG=$(date +'%Y-%m-%d')-${GITHUB_SHA::7}" >> "$GITHUB_OUTPUT"
+        fi
+    - name: Upload binaries
+      uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844
+      with:
+        files: |
+          sycl_linux.tar.gz
+          sycl_windows.tar.gz
+        tag_name: nightly-${{ steps.tag.outputs.TAG }}
+        name: DPC++ daily ${{ steps.tag.outputs.TAG }}
+        prerelease: true
+        body: "Daily build ${{ steps.tag.outputs.TAG }}"
+        target_commitish: ${{ github.sha }}
+
   ubuntu2204_docker_build_push:
     if: github.repository == 'intel/llvm'
     runs-on: [Linux, build]

.github/workflows/sycl_windows_build_and_test.yml

@@ -156,5 +156,6 @@ jobs:
       name: Run SYCL End-to-End tests
       with:
         sycl_artifact: sycl_windows_default
+        sycl_archive: ${{ inputs.artifact_archive_name }}
         targets: ${{ matrix.targets }}
         cmake_args: '${{ matrix.cmake_args }}'

devops/containers/ubuntu2204_preinstalled.Dockerfile

@@ -5,8 +5,7 @@ FROM $base_image:$base_tag
 
 COPY scripts/drivers_entrypoint.sh /drivers_entrypoint.sh
 RUN mkdir -p /opt/sycl
-ADD llvm_sycl.tar.zst /tmp
-RUN tar -I 'zstd -d' -xf /tmp/llvm_sycl.tar.zst -C /opt/sycl && rm /tmp/llvm_sycl.tar.zst
+ADD sycl_linux.tar.gz /opt/sycl/
 
 ENV PATH /opt/sycl/bin:$PATH
 ENV LD_LIBRARY_PATH /opt/sycl/lib:$LD_LIBRARY_PATH