[SYCL][CUDA] Add SM version check to bfloat16 CUDA test (#1423)

* [SYCL][CUDA] Add SM version check to bfloat16 CUDA test

bfloat16 requires SM80 on the CUDA backend. This commit changes CUDA
tests to do an early exit if that requirement is not met.
* Remove CUDA specific test and try run SM80

Signed-off-by: Larsen, Steffen <steffen.larsen@intel.com>

SYCL/BFloat16/bfloat16_type.cpp

@@ -1,12 +1,13 @@
-// UNSUPPORTED: hip
-// RUN: %if cuda %{%clangxx -fsycl -fsycl-targets=%sycl_triple -Xsycl-target-backend --cuda-gpu-arch=sm_80 %s -o %t.out %}
-// TODO enable the below when CI supports >=sm_80
-// RUNx: %if cuda %{%GPU_RUN_PLACEHOLDER %t.out %}
-// RUN: %clangxx -fsycl %s -o %t.out
+// RUN: %if cuda %{%clangxx -fsycl -fsycl-targets=%sycl_triple -DUSE_CUDA_SM80=1 -Xsycl-target-backend --cuda-gpu-arch=sm_80 %s -o %t.out %}
+// RUN: %if cuda %{%GPU_RUN_PLACEHOLDER %t.out %}
+// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple %s -o %t.out
 // TODO currently the feature isn't supported on FPGA.
 // RUN: %CPU_RUN_PLACEHOLDER %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out
 // RUNx: %ACC_RUN_PLACEHOLDER %t.out
+//
+// Not currently supported on HIP.
+// UNSUPPORTED: hip
 
 //==----------- bfloat16_type.cpp - SYCL bfloat16 type test ----------------==//
 //
@@ -18,4 +19,22 @@
 
 #include "bfloat16_type.hpp"
 
-int main() { return run_tests(); }
+int main() {
+
+#ifdef USE_CUDA_SM80
+  // Special build for SM80 CUDA.
+  sycl::device Dev{default_selector_v};
+  if (Dev.get_platform().get_backend() != backend::ext_oneapi_cuda) {
+    std::cout << "Test skipped; CUDA run was not run with CUDA device."
+              << std::endl;
+    return 0;
+  }
+  if (std::stof(Dev.get_info<sycl::info::device::backend_version>()) < 8.0f) {
+    std::cout << "Test skipped; CUDA device does not support SM80 or newer."
+              << std::endl;
+    return 0;
+  }
+#endif
+
+  return run_tests();
+}