line-map.c (linemap_enter_macro): Don't zero max_column_hint in every macro.

 	* line-map.c (linemap_enter_macro): Don't zero max_column_hint in
 	every macro. This improves performance by reducing the number of
 	reallocations when track-macro-expansion is on.

From-SVN: r188242

libcpp/ChangeLog

+2012-06-04  Dimitrios Apostolou <jimis@gmx.net>
+
+	* line-map.c (linemap_enter_macro): Don't zero max_column_hint in
+	every macro. This improves performance by reducing the number of
+	reallocations when track-macro-expansion is on.
+
 2012-06-04  Dodji Seketeli  <dodji@redhat.com>
 
 	PR preprocessor/53463

libcpp/line-map.c

@@ -331,7 +331,6 @@ linemap_enter_macro (struct line_maps *set, struct cpp_hashnode *macro_node,
 	  num_tokens * sizeof (source_location));
 
   LINEMAPS_MACRO_CACHE (set) = LINEMAPS_MACRO_USED (set) - 1;
-  set->max_column_hint = 0;
 
   return map;
 }