[CI] Use oneAPI for Windows postcommit builds (#16355)

Getting this working was an unbelievable amount of work. I hit so many
weird issues caused by dumb Windows things (case insensitivity, cmd vs
bash, bugs in cmake/ninja/sccache themselves) but finally I got
something that consistently passes.

You can see the funniest dumb Windows issue in the comment in the CMake
file change.

The basic idea is to extend the Windows build workflow to allow using
`icx`, add an action to setup the oneAPI environment, call it from the
build action and the test action (since we need some of the shared libs
on path even for testing), and fix some oneAPI-only build issues.

We need to do some Powershell magic after calling the oneAPI setup bat
script because the environment variables get lost since it's run in a
subprocess.

We also switch to `ccache` instead of `sccache`, because `sccache`
doesn't support `icx` (actually neither does `ccache`, but I added it
upstream [here](ccache/ccache#1533) and we are
using a local build of `ccache`, it was easier to add support to
`ccache`). Manually tested it to confirmed cache reads and write are
working as expected.

At some point we should probably investigate why some tests fail or some
compiler flags are required with `icx` only and not `cl`, but let's do
that as separate work because I am done with Windows for now.

I already set up all Windows runners used here to work with this change.

Next I'll add oneAPI builds on Linux, which I really hope is easier.

---------

Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>

Author: sarnex

.github/workflows/sycl-post-commit.yml

@@ -103,7 +103,11 @@ jobs:
       && success()
       && github.repository == 'intel/llvm'
     uses: ./.github/workflows/sycl-windows-build.yml
-
+    with:
+      compiler: icx
+      build_configure_extra_args: --cmake-opt=-DCMAKE_C_FLAGS="/clang:-Wno-nonportable-include-path /clang:-Wno-cast-function-type-mismatch" --cmake-opt=-DCMAKE_CXX_FLAGS="/clang:-Wno-nonportable-include-path /clang:-Wno-cast-function-type-mismatch" --cmake-opt="-DCMAKE_EXE_LINKER_FLAGS=/manifest:no" --cmake-opt="-DCMAKE_MODULE_LINKER_FLAGS=/manifest:no" --cmake-opt="-DCMAKE_SHARED_LINKER_FLAGS=/manifest:no" 
+      build_cache_suffix: icx
+      
   e2e-win:
     needs: build-win
     # Continue if build was successful.
@@ -117,6 +121,7 @@ jobs:
       runner: '["Windows","gen12"]'
       sycl_toolchain_archive: ${{ needs.build-win.outputs.artifact_archive_name }}
       extra_lit_opts: --param gpu-intel-gen12=True
+      compiler: icx
 
   macos_default:
     name: macOS

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

@@ -10,6 +10,9 @@ on:
       build_ref:
         type: string
         required: false
+      build_configure_extra_args:
+        type: string
+        required: false
       changes:
         type: string
         description: 'Filter matches for the changed files in the PR'
@@ -22,6 +25,10 @@ on:
         description: 'Artifacts retention period'
         type: string
         default: 3
+      compiler:
+        type: string
+        required: false
+        default: "cl"
 
     outputs:
       build_conclusion:
@@ -41,6 +48,9 @@ on:
         type: choice
         options:
           - "default"
+      build_configure_extra_args:
+        type: string
+        required: false
       artifact_archive_name:
         type: choice
         options:
@@ -50,6 +60,12 @@ on:
         type: choice
         options:
           - 3
+      compiler:
+        type: choice
+        options:
+          - cl
+          - icx
+          
 permissions: read-all
 
 jobs:
@@ -61,37 +77,43 @@ jobs:
     outputs:
       build_conclusion: ${{ steps.build.conclusion }}
     steps:
+    - uses: actions/checkout@v4
+      with:
+        path: src
+        ref: ${{ inputs.build_ref || github.sha }}
+        fetch-depth: 1
     - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756
       with:
         arch: amd64
+    - name: Setup oneAPI env
+      uses: ./src/devops/actions/setup_windows_oneapi_env
+      if: ${{ always() && !cancelled() && inputs.compiler == 'icx' }}
     - name: Set env
       run: |
         git config --system core.longpaths true
         git config --global core.autocrlf false
         echo "C:\Program Files\Git\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-        echo "SCCACHE_DIR=D:\github\_work\cache\${{ inputs.build_cache_suffix }}" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-    - uses: actions/checkout@v4
-      with:
-        path: src
-        ref: ${{ inputs.build_ref || github.sha }}
-        fetch-depth: 1
+        echo "CCACHE_DIR=D:\github\_work\cache\${{ inputs.build_cache_suffix }}" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+        echo "CCACHE_MAXSIZE=10G" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
     - name: Register cleanup after job is finished
       uses: ./src/devops/actions/cleanup
     - name: Configure
       shell: cmd
+      env:
+         ARGS: ${{ inputs.build_configure_extra_args }}
       # TODO switch to clang-cl and lld when this is fixed https://github.com/oneapi-src/level-zero/issues/83
       run: |
         mkdir build
         mkdir install
         IF NOT EXIST D:\github\_work\cache MKDIR D:\github\_work\cache
         IF NOT EXIST D:\github\_work\cache\${{inputs.build_cache_suffix}} MKDIR D:\github\_work\cache\${{inputs.build_cache_suffix}}
         python.exe src/buildbot/configure.py -o build ^
-          --ci-defaults ^
-          --cmake-opt="-DCMAKE_C_COMPILER=cl" ^
-          --cmake-opt="-DCMAKE_CXX_COMPILER=cl" ^
+          --ci-defaults %ARGS% ^
+          --cmake-opt="-DCMAKE_C_COMPILER=${{inputs.compiler}}" ^
+          --cmake-opt="-DCMAKE_CXX_COMPILER=${{inputs.compiler}}" ^
           --cmake-opt="-DCMAKE_INSTALL_PREFIX=%GITHUB_WORKSPACE%\install" ^
-          --cmake-opt="-DCMAKE_CXX_COMPILER_LAUNCHER=sccache" ^
-          --cmake-opt="-DCMAKE_C_COMPILER_LAUNCHER=sccache" ^
+          --cmake-opt="-DCMAKE_CXX_COMPILER_LAUNCHER=ccache" ^
+          --cmake-opt="-DCMAKE_C_COMPILER_LAUNCHER=ccache" ^
           --cmake-opt="-DLLVM_INSTALL_UTILS=ON" ^
           --cmake-opt="-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=SPIRV"
     - name: Build
@@ -101,16 +123,24 @@ jobs:
         cmake --build build --target sycl-toolchain
     - name: check-llvm
       if: always() && !cancelled() && contains(inputs.changes, 'llvm')
+      shell: bash
       run: |
+        if [[ ${{inputs.compiler}} == 'icx' ]]; then
+          export LIT_FILTER="SYCL"
+        fi
         cmake --build build --target check-llvm
     - name: check-clang
       if: always() && !cancelled() && contains(inputs.changes, 'clang')
       run: |
         cmake --build build --target check-clang
     - name: check-sycl
       if: always() && !cancelled() && contains(inputs.changes, 'sycl')
+      shell: bash
       run: |
-        cmake --build build --target check-sycl
+         if [[ ${{inputs.compiler}} == 'icx' ]]; then
+           export LIT_FILTER_OUT="host_tanpi_double_accuracy"
+         fi
+         cmake --build build --target check-sycl
     - name: check-sycl-unittests
       if: always() && !cancelled() && contains(inputs.changes, 'sycl')
       run: |

.github/workflows/sycl-windows-run-tests.yml

@@ -33,6 +33,11 @@ on:
         default: '{}'
         required: False
 
+      compiler:
+        type: string
+        required: false
+        default: "cl"
+
 permissions: read-all
 
 jobs:
@@ -42,20 +47,23 @@ jobs:
     environment: WindowsCILock
     env: ${{ fromJSON(inputs.env) }}
     steps:
+    # TODO: use cached_checkout
+    - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
+        ref: ${{ inputs.ref || github.sha }}
+        path: llvm
     - uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756
       with:
         arch: amd64
+    - name: Setup oneAPI env
+      uses: ./llvm/devops/actions/setup_windows_oneapi_env
+      if: ${{ always() && !cancelled() && inputs.compiler == 'icx' }}
     - name: Set env
       run: |
         git config --system core.longpaths true
         git config --global core.autocrlf false
         echo "C:\Program Files\Git\usr\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-    # TODO: use cached_checkout
-    - uses: actions/checkout@v4
-      with:
-        persist-credentials: false
-        ref: ${{ inputs.ref || github.sha }}
-        path: llvm
     - name: Register cleanup after job is finished
       uses: ./llvm/devops/actions/cleanup
     - name: Download compiler toolchain
@@ -84,6 +92,9 @@ jobs:
       shell: bash
       run: |
         # Run E2E tests.
+        if [[ ${{inputs.compiler}} == 'icx' ]]; then
+           export LIT_FILTER_OUT="compile_on_win_with_mdd"
+        fi
         export LIT_OPTS="-v --no-progress-bar --show-unsupported --show-pass --show-xfail --max-time 3600 --time-tests ${{ inputs.extra_lit_opts }}"
         cmake --build build-e2e --target check-sycl-e2e
     - name: Detect hung tests

devops/actions/setup_windows_oneapi_env/action.yml

@@ -0,0 +1,28 @@
+name: Windows setup oneAPI env
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup oneAPI env
+      shell: powershell
+      run: |
+        $batchFilePath = "C:\Program Files (x86)\Intel\oneAPI\setvars.bat"
+
+        $githubEnvFilePath = $env:GITHUB_ENV
+
+        $envBefore = Get-ChildItem Env: | ForEach-Object { "$($_.Name)=$($_.Value)" }
+
+        $envVars = & cmd.exe /c "call `"$batchFilePath`" && set" | Out-String
+
+        $envAfter = $envVars -split "`r`n" | Where-Object { $_ -match "^(.*?)=(.*)$" }
+
+        foreach ($envVar in $envAfter) {
+            if ($envVar -match "^(.*?)=(.*)$") {
+                $name = $matches[1]
+                $value = $matches[2]
+                $envBeforeVar = $envBefore | Where-Object { $_ -like "$name=*" }
+                if (-not $envBeforeVar -or $envBeforeVar -ne "$name=$value") {
+                    Add-Content -Path $githubEnvFilePath -Value "$name=$value"
+                }
+            }
+         }

sycl/source/CMakeLists.txt

@@ -222,6 +222,18 @@ function(add_sycl_rt_library LIB_NAME LIB_OBJ_NAME)
     target_compile_options(${LIB_OBJ_NAME} PRIVATE
       -Winstantiation-after-specialization)
   endif()
+
+  # When building using icx on Windows, the VERSION file
+  # produced by cmake is used in source code
+  # when including '<version>' because Windows is
+  # case-insensitive and icx adds the build directory
+  # to the system header search path.
+  if (WIN32 AND CMAKE_CXX_COMPILER_ID MATCHES "IntelLLVM")
+    set(VERSION_FILE "${CMAKE_BINARY_DIR}/VERSION")
+    if(EXISTS ${VERSION_FILE})
+      file(REMOVE ${VERSION_FILE})
+    endif()
+  endif()
 endfunction(add_sycl_rt_library)
 
 set(SYCL_COMMON_SOURCES

sycl/source/detail/windows_ur.cpp

@@ -56,24 +56,6 @@ void *getOsLibraryFuncAddress(void *Library, const std::string &FunctionName) {
       GetProcAddress((HMODULE)Library, FunctionName.c_str()));
 }
 
-static std::filesystem::path getCurrentDSODirPath() {
-  wchar_t Path[MAX_PATH];
-  auto Handle =
-      getOSModuleHandle(reinterpret_cast<void *>(&getCurrentDSODirPath));
-  DWORD Ret = GetModuleFileName(
-      reinterpret_cast<HMODULE>(ExeModuleHandle == Handle ? 0 : Handle), Path,
-      MAX_PATH);
-  assert(Ret < MAX_PATH && "Path is longer than MAX_PATH?");
-  assert(Ret > 0 && "GetModuleFileName failed");
-  (void)Ret;
-
-  BOOL RetCode = PathRemoveFileSpec(Path);
-  assert(RetCode && "PathRemoveFileSpec failed");
-  (void)RetCode;
-
-  return std::filesystem::path(Path);
-}
-
 void *getURLoaderLibrary() { return getPreloadedURLib(); }
 
 } // namespace ur

sycl/unittests/assert/assert.cpp

@@ -145,10 +145,12 @@ static AssertHappened ExpectedToOutput = {
 };
 
 static constexpr int KernelLaunchCounterBase = 0;
-static int KernelLaunchCounter = KernelLaunchCounterBase;
 static constexpr int MemoryMapCounterBase = 1000;
 static int MemoryMapCounter = MemoryMapCounterBase;
+#ifndef _WIN32
+static int KernelLaunchCounter = KernelLaunchCounterBase;
 static constexpr int PauseWaitOnIdx = KernelLaunchCounterBase + 1;
+#endif
 
 // Mock redifinitions
 static ur_result_t redefinedKernelGetGroupInfoAfter(void *pParams) {
@@ -167,6 +169,7 @@ static ur_result_t redefinedKernelGetGroupInfoAfter(void *pParams) {
   return UR_RESULT_SUCCESS;
 }
 
+#ifndef _WIN32
 static ur_result_t redefinedEnqueueKernelLaunchAfter(void *pParams) {
   auto params = *static_cast<ur_enqueue_kernel_launch_params_t *>(pParams);
   static ur_event_handle_t UserKernelEvent = **params.pphEvent;
@@ -197,6 +200,7 @@ static ur_result_t redefinedEventWaitPositive(void *pParams) {
   printf("Waiting for events %i, %i\n", EventIdx1, EventIdx2);
   return UR_RESULT_SUCCESS;
 }
+#endif
 
 static ur_result_t redefinedEventWaitNegative(void *pParams) {
   auto params = *static_cast<ur_enqueue_events_wait_params_t *>(pParams);
@@ -223,6 +227,7 @@ static ur_result_t redefinedEnqueueMemBufferMapAfter(void *pParams) {
   return UR_RESULT_SUCCESS;
 }
 
+#ifndef _WIN32
 static void setupMock(sycl::unittest::UrMock<> &Mock) {
   using namespace sycl::detail;
   mock::getCallbacks().set_after_callback("urKernelGetGroupInfo",
@@ -234,6 +239,7 @@ static void setupMock(sycl::unittest::UrMock<> &Mock) {
   mock::getCallbacks().set_before_callback("urEventWait",
                                            &redefinedEventWaitPositive);
 }
+#endif
 
 namespace TestInteropKernel {
 const sycl::context *Context = nullptr;