================
@@ -14296,6 +14296,31 @@ void 
ASTContext::getFunctionFeatureMap(llvm::StringMap<bool> &FeatureMap,
   }
 }
 
+static SYCLKernelInfo BuildSYCLKernelInfo(ASTContext &Context,
+                                          CanQualType KernelNameType,
+                                          const FunctionDecl *FD) {
+  return { KernelNameType, FD };
+}
+
+void ASTContext::registerSYCLEntryPointFunction(FunctionDecl *FD) {
+  assert(!FD->isInvalidDecl());
+  assert(!FD->isDependentContext());
+
+  const auto *SKEPAttr = FD->getAttr<SYCLKernelEntryPointAttr>();
+  assert(SKEPAttr && "Missing sycl_kernel_entry_point attribute");
+
+  CanQualType KernelNameType = getCanonicalType(SKEPAttr->getKernelName());
+  auto IT = SYCLKernels.find(KernelNameType);
+  if (IT != SYCLKernels.end()) {
+    if (!declaresSameEntity(FD, IT->second.GetKernelEntryPointDecl()))
+      llvm::report_fatal_error("SYCL kernel name conflict");
+  } else {
+    SYCLKernels.insert_or_assign(
----------------
erichkeane wrote:

Why `insert_or_assign`?  We already know it doesn't exist.  Or is this `else` 
on the wrong `if` here?

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