this accessor doesn't need to copy the string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100542 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/SourceMgr.h b/include/llvm/Support/SourceMgr.h
index 857d4d4d7bed95faeec508feb291a8f968bbd37b..9cd35d1f93116b97eaf2a08db7fae4a028e5b0a9 100644 (file)
--- a/include/llvm/Support/SourceMgr.h
+++ b/include/llvm/Support/SourceMgr.h
@@ -174,7 +174,7 @@ public:
 
   const SourceMgr *getSourceMgr() const { return SM; }
   SMLoc getLoc() const { return Loc; }
-  const std::string getFilename() { return Filename; }
+  const std::string &getFilename() { return Filename; }
   int getLineNo() const { return LineNo; }
   int getColumnNo() const { return ColumnNo; }
   const std::string &getMessage() const { return Message; }