[CI] Add nightly E2E testing for Windows builds with debug flags

.github/workflows/sycl-nightly.yml

@@ -150,10 +150,26 @@ jobs:
       # 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
+      build_artifact_suffix: default
       # Disable the spirv-dis requirement as to not require SPIR-V Tools.
       build_configure_extra_args: -DLLVM_SPIRV_ENABLE_LIBSPIRV_DIS=off
       build_target: all
 
+  # This debug build is used in CI for testing purposes: The way MSVC CRT and
+  # STL works results in the runtime needing to consider special cases when
+  # debug flags are used. This build is used to test the runtime changes that
+  # would otherwise be untested without debug flags. 
+  build-win-debug:
+    uses: ./.github/workflows/sycl-windows-build.yml
+    if: github.repository == 'intel/llvm'
+    with:
+      retention-days: 7
+      artifact_archive_name: sycl_windows_debug.tar.gz
+      build_artifact_suffix: debug
+      build_configure_extra_args: -t Debug -DLLVM_SPIRV_ENABLE_LIBSPIRV_DIS=off -D_DEBUG=1
+      # CMAKE_BUILD_TYPE=Debug provides /Od and /MDd
+      pack_abi_symbols: false
+
   e2e-win:
     needs: build-win
     # Continue if build was successful.
@@ -168,6 +184,20 @@ jobs:
       target_devices: level_zero:gpu
       sycl_toolchain_archive: ${{ needs.build-win.outputs.artifact_archive_name }}
 
+  e2e-win-debug:
+    needs: build-win-debug
+    # Continue if build was successful.
+    if: |
+      always()
+      && !cancelled()
+      && needs.build-win-debug.outputs.build_conclusion == 'success'
+    uses: ./.github/workflows/sycl-windows-run-tests.yml
+    with:
+      name: Intel GEN12 Graphics with Level Zero
+      runner: '["Windows","gen12"]'
+      target_devices: level_zero:gpu
+      sycl_toolchain_archive: ${{ needs.build-win-debug.outputs.artifact_archive_name }}
+
   cuda-aws-start:
     needs: [ubuntu2204_build]
     if: ${{ always() && !cancelled() && needs.ubuntu2204_build.outputs.build_conclusion == 'success' }}

.github/workflows/sycl-windows-build.yml

@@ -10,6 +10,10 @@ on:
       build_configure_extra_args:
         type: string
         required: false
+      build_artifact_suffix:
+        type: string
+        required: true
+        default: "default"
       build_target:
         type: string
         required: false
@@ -39,6 +43,10 @@ on:
       pack_release:
         type: string
         required: false
+      pack_abi_symbols:
+        type: string
+        required: false
+        default: true
 
     outputs:
       build_conclusion:
@@ -59,6 +67,10 @@ on:
         type: choice
         options:
           - "default"
+      build_artifact_suffix:
+        type: choice
+        options:
+          - "default"
       build_configure_extra_args:
         type: string
         required: false
@@ -184,13 +196,13 @@ jobs:
       run: |
         cmake --build build --target check-libdevice
     - name: Generate/diff new ABI symbols
-      if: always() && !cancelled() && contains(inputs.changes, 'sycl')
+      if: ${{ always() && !cancelled() && contains(inputs.changes, 'sycl') && inputs.pack_abi_symbols == 'true' }}
       shell: bash
       run: |
         LLVM_BIN_PATH="build/bin" python.exe src/sycl/tools/abi_check.py --mode dump_symbols --output build/new_sycl_symbols_windows.dump build/bin/sycl?.dll
         diff -Naur src/sycl/test/abi/sycl_symbols_windows.dump build/new_sycl_symbols_windows.dump || true
     - name: Upload new ABI symbols
-      if: always() && !cancelled() && contains(inputs.changes, 'sycl')
+      if: ${{ always() && !cancelled() && contains(inputs.changes, 'sycl') && inputs.pack_abi_symbols == 'true' }}
       uses: actions/upload-artifact@v4
       with:
         name: sycl_windows_abi_symbols
@@ -235,7 +247,7 @@ jobs:
       if: ${{ always() && !cancelled() && steps.build.conclusion == 'success' }}
       uses: actions/upload-artifact@v4
       with:
-        name: sycl_windows_default
+        name: sycl_windows_${{ inputs.build_artifact_suffix }}
         path: ${{ inputs.artifact_archive_name }}
         retention-days: ${{ inputs.retention-days }}