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

[Shafik Yaghmour via cfe-commits]

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@@ -16352,6 +16352,32 @@ Decl *Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Decl *D,
 
   maybeAddDeclWithEffects(FD);
 
+  if (FD && !FD->isInvalidDecl() && FD->hasAttr<SYCLKernelEntryPointAttr>() &&
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shafik wrote:

@tahonermann above this check we unconditionally dereference `FD` many times. I believe this check is 

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