[clang] [clang] Optimize castToDeclContext for 2% improvement in build times (PR #76825)

[Vlad Serebrennikov via cfe-commits]

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@@ -196,8 +227,20 @@ void ClangASTNodesEmitter::run(raw_ostream &OS) {
 }
 
 void clang::EmitClangASTNodes(RecordKeeper &RK, raw_ostream &OS,
-                              const std::string &N, const std::string &S) {
-  ClangASTNodesEmitter(RK, N, S).run(OS);
+                              const std::string &N, const std::string &S,
+                              const std::string &PriorizeIfSubclassOf) {
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Endilll wrote:

Why `const std::string &` instead of `std::string_view`?

https://github.com/llvm/llvm-project/pull/76825