[clang] Pass QualifiedRenameRule strings by reference to reduce copies (PR #69848)

[via cfe-commits]

https://github.com/mfdeakin created https://github.com/llvm/llvm-project/pull/69848

Fixes #34652

>From 0052d66e15451af47ebf8f2c4b060ea21a75f4a4 Mon Sep 17 00:00:00 2001
From: Michael Deakin <mfdeakin at cs.unc.edu>
Date: Thu, 19 Oct 2023 19:28:46 -0700
Subject: [PATCH] Pass QualifiedRenameRule strings by reference to reduce
 copies

Fixes #34652
---
 .../clang/Tooling/Refactoring/Rename/RenamingAction.h    | 9 ++++-----
 clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp  | 4 ++--
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/clang/include/clang/Tooling/Refactoring/Rename/RenamingAction.h b/clang/include/clang/Tooling/Refactoring/Rename/RenamingAction.h
index 43a8d56e4e71762..1ac3ea1aa6e36d6 100644
--- a/clang/include/clang/Tooling/Refactoring/Rename/RenamingAction.h
+++ b/clang/include/clang/Tooling/Refactoring/Rename/RenamingAction.h
@@ -68,15 +68,14 @@ class RenameOccurrences final : public SourceChangeRefactoringRule {
 
 class QualifiedRenameRule final : public SourceChangeRefactoringRule {
 public:
-  static Expected<QualifiedRenameRule> initiate(RefactoringRuleContext &Context,
-                                                std::string OldQualifiedName,
-                                                std::string NewQualifiedName);
+  static Expected<QualifiedRenameRule>
+  initiate(RefactoringRuleContext &Context, const std::string &OldQualifiedName,
+           std::string &&NewQualifiedName);
 
   static const RefactoringDescriptor &describe();
 
 private:
-  QualifiedRenameRule(const NamedDecl *ND,
-                      std::string NewQualifiedName)
+  QualifiedRenameRule(const NamedDecl *ND, std::string &&NewQualifiedName)
       : ND(ND), NewQualifiedName(std::move(NewQualifiedName)) {}
 
   Expected<AtomicChanges>
diff --git a/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp b/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
index 72598601d47d679..ba17d0b807a775a 100644
--- a/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
+++ b/clang/lib/Tooling/Refactoring/Rename/RenamingAction.cpp
@@ -89,8 +89,8 @@ RenameOccurrences::createSourceReplacements(RefactoringRuleContext &Context) {
 
 Expected<QualifiedRenameRule>
 QualifiedRenameRule::initiate(RefactoringRuleContext &Context,
-                              std::string OldQualifiedName,
-                              std::string NewQualifiedName) {
+                              const std::string &OldQualifiedName,
+                              std::string &&NewQualifiedName) {
   const NamedDecl *ND =
       getNamedDeclFor(Context.getASTContext(), OldQualifiedName);
   if (!ND)