[SYCLomatic] Add template constraints for kernel_launcher::launch fun…

…ction (#2581)


Signed-off-by: intwanghao <[email protected]>

clang/runtime/dpct-rt/include/dpct/kernel.hpp

@@ -521,9 +521,9 @@ class kernel_launcher {
   /// \param [in] que SYCL queue used to execute kernel.
   /// \param [in] args Kernel arguments.
   template <typename FuncT, typename... ArgsT>
-  static void launch(FuncT *func, dim3 group_range, dim3 local_range,
-                     unsigned int local_mem_size, queue_ptr que,
-                     ArgsT... args) {
+  static std::enable_if_t<std::is_invocable_v<FuncT *, ArgsT...>, void>
+  launch(FuncT *func, dim3 group_range, dim3 local_range,
+         unsigned int local_mem_size, queue_ptr que, ArgsT... args) {
     set_execution_config(group_range, local_range, local_mem_size, que);
     func(args...);
   }
@@ -551,8 +551,9 @@ class kernel_launcher {
   /// function.
   /// \param [in] que SYCL queue used to execute kernel.
   template <typename FuncT>
-  static void launch(FuncT *func, dim3 group_range, dim3 local_range,
-                     void **args, unsigned int local_mem_size, queue_ptr que) {
+  static std::enable_if_t<std::is_function_v<FuncT>, void>
+  launch(FuncT *func, dim3 group_range, dim3 local_range, void **args,
+         unsigned int local_mem_size, queue_ptr que) {
     constexpr size_t p_num = args_selector<0, 0, FuncT>::params_num;
     set_execution_config(group_range, local_range, local_mem_size, que);
     args_selector<p_num, p_num, FuncT> selector(args, nullptr);