fix typo


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66860 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index 269d7cd..d068e44 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -402,7 +402,7 @@
   // SourceLocation manipulation methods.
   //===--------------------------------------------------------------------===//
   
-  /// getFileIDSlow - Return the FileID for a SourceLocation.  This is a very
+  /// getFileID - Return the FileID for a SourceLocation.  This is a very
   /// hot method that is used for all SourceManager queries that start with a
   /// SourceLocation object.  It is responsible for finding the entry in
   /// SLocEntryTable which contains the specified location.