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

[Erich Keane via cfe-commits]

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+// RUN: %clang_cc1 -triple x86_64-linux-gnu -std=c++17 -fsyntax-only -fsycl-is-device -verify %s
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erichkeane wrote:

I think that is fine for me.  Again, sorry for not seeing this one :/  I would LOVE to see the list of 'things not diagnosed' documented/updated somewhere (so that we can check to make sure we get them all, and more importantly (hah!) I can do so while reviewing).  But I'm OK holding off on this.

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