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

[Erich Keane via cfe-commits]

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@@ -12053,6 +12053,10 @@ bool Sema::CheckFunctionDeclaration(Scope *S, FunctionDecl *NewFD,
   if (LangOpts.OpenMP)
     OpenMP().ActOnFinishedFunctionDefinitionInOpenMPAssumeScope(NewFD);
 
+  if (LangOpts.isSYCL() && NewFD->hasAttr<SYCLKernelEntryPointAttr>() &&
+      !NewFD->isInvalidDecl() && !NewFD->isDependentContext())
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erichkeane wrote:

Since we are checking this here, then doing the asserts... I think we should make `register...` tolerant of invalid/depedendent decls and have it just immediately return rather than asserting.

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