Use clang-cl as Windows AdaptiveCpp CPU compiler

Author: allnes

.github/actions/setup-sycl-toolchain/action.yml

@@ -132,15 +132,10 @@ runs:
       }
       $clangClShortPath = Get-ShortPath $clangClPath
       $clangBin = Split-Path $clangClPath -Parent
-      $clangCxxPath = Join-Path $clangBin 'clang++.exe'
-      if (-not (Test-Path $clangCxxPath)) {
-        throw "clang++.exe was not found next to $clangClPath. Install the Visual Studio LLVM/Clang toolset on the Windows runner."
-      }
-      $clangCxxShortPath = Get-ShortPath $clangCxxPath
 
       "ITLABAI_CC=$clangClShortPath" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
       "ITLABAI_CXX=$clangClShortPath" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
-      "ITLABAI_ACPP_CPU_CXX=$clangCxxShortPath" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+      "ITLABAI_ACPP_CPU_CXX=$clangClShortPath" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
       "$clangBin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
   - name: Configure Windows toolchain environment