From 7dafb232323fe9a620ca08ab25c87ee90e30e408 Mon Sep 17 00:00:00 2001
From: Reid Kleckner <reid@kleckner.net>
Date: Wed, 22 May 2013 17:16:39 +0000
Subject: [PATCH] Use StringMap in MicrosoftMangle to resolve FIXME.

llvm-svn: 182488
---
 clang/lib/AST/MicrosoftMangle.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/clang/lib/AST/MicrosoftMangle.cpp b/clang/lib/AST/MicrosoftMangle.cpp
index d03060b391de..e360a934083c 100644
--- a/clang/lib/AST/MicrosoftMangle.cpp
+++ b/clang/lib/AST/MicrosoftMangle.cpp
@@ -23,6 +23,7 @@
 #include "clang/Basic/ABI.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/TargetInfo.h"
+#include "llvm/ADT/StringMap.h"
 #include <map>
 
 using namespace clang;
@@ -48,9 +49,7 @@ class MicrosoftCXXNameMangler {
   const NamedDecl *Structor;
   unsigned StructorType;
 
-  // FIXME: audit the performance of BackRefMap as it might do way too many
-  // copying of strings.
-  typedef std::map<std::string, unsigned> BackRefMap;
+  typedef llvm::StringMap<unsigned> BackRefMap;
   BackRefMap NameBackReferences;
   bool UseNameBackReferences;