Introduce -f{no-}spell-checking options to enable/disable
spell-checking. By default, spell-checking is enabled for Clang
(obviously) but disabled in CIndex for performance reasons.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107992 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h
index c4f3688..bbcceb7 100644
--- a/include/clang/Basic/LangOptions.h
+++ b/include/clang/Basic/LangOptions.h
@@ -102,6 +102,8 @@
   unsigned InlineVisibilityHidden : 1; // Whether inline C++ methods have
                                        // hidden visibility by default.  
 
+  unsigned SpellChecking : 1; // Whether to perform spell-checking for error
+                              // recovery.
   // FIXME: This is just a temporary option, for testing purposes.
   unsigned NoBitFieldTypeAlign : 1;
 
@@ -179,6 +181,7 @@
     CatchUndefined = 0;
     DumpRecordLayouts = 0;
     DumpVTableLayouts = 0;
+    SpellChecking = 1;
     NoBitFieldTypeAlign = 0;
   }