[clang] [SYCL] The sycl_kernel_entry_point attribute. (PR #111389)

[Erich Keane via cfe-commits]

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@@ -455,6 +455,64 @@ The SYCL kernel in the previous code sample meets these expectations.
   }];
 }
 
+def SYCLKernelEntryPointDocs : Documentation {
+  let Category = DocCatFunction;
+  let Content = [{
+The ``sycl_kernel_entry_point`` attribute specifies that a function definition
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erichkeane wrote:

This first sentence is... very difficult to understand/self referential. Reword please.

https://github.com/llvm/llvm-project/pull/111389