[clang] [SYCL] SYCL host kernel launch support for the sycl_kernel_entry_point attribute. (PR #152403)

[Tom Honermann via cfe-commits]

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@@ -17,6 +17,10 @@ module M2 { header "m2.h" }
 #--- common.h
 template<int> struct KN;
 
+// A generic kernel launch function.
+template<typename KN, typename... Ts>
+void sycl_kernel_launch(const char *, Ts...) {}
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tahonermann wrote:

The downside of doing so is that a requested change to the name or in how the implicit calls are constructed would have required the declarations to be updated. I understand the goal of making the patch smaller, but I think there is also value in keeping it contained (especially if it were to be reverted later).

https://github.com/llvm/llvm-project/pull/152403