Get rid of macros for diagnostic_report_current_module

diagnostic.h has a couple of macros (diagnostic_last_module_changed
and diagnostic_set_last_module) which are only used within
diagnostic_report_current_module.

This patch eliminates the macros in favor of static functions within
diagnostic.c.

No functional change intended.

gcc/ChangeLog:
	* diagnostic.c (last_module_changed_p): New function.
	(set_last_module): New function.
	(diagnostic_report_current_module): Convert macro usage to
	the above functions.
	* diagnostic.h (diagnostic_context::last_module): Strengthen
	from const line_map * to const line_map_ordinary *.
	(diagnostic_last_module_changed): Delete macro.
	(diagnostic_set_last_module): Delete macro.

From-SVN: r247664

gcc/ChangeLog

 2017-05-05  David Malcolm  <dmalcolm@redhat.com>
 
+	* diagnostic.c (last_module_changed_p): New function.
+	(set_last_module): New function.
+	(diagnostic_report_current_module): Convert macro usage to
+	the above functions.
+	* diagnostic.h (diagnostic_context::last_module): Strengthen
+	from const line_map * to const line_map_ordinary *.
+	(diagnostic_last_module_changed): Delete macro.
+	(diagnostic_set_last_module): Delete macro.
+
+2017-05-05  David Malcolm  <dmalcolm@redhat.com>
+
 	* diagnostic.c (diagnostic_impl): Replace report_diagnostic
 	with diagnostic_report_diagnostic.
 	(diagnostic_n_impl_richloc): Likewise.

gcc/diagnostic.c

@@ -534,6 +534,25 @@ diagnostic_action_after_output (diagnostic_context *context,
     }
 }
 
+/* True if the last module or file in which a diagnostic was reported is
+   different from the current one.  */
+
+static bool
+last_module_changed_p (diagnostic_context *context,
+		       const line_map_ordinary *map)
+{
+  return context->last_module != map;
+}
+
+/* Remember the current module or file as being the last one in which we
+   report a diagnostic.  */
+
+static void
+set_last_module (diagnostic_context *context, const line_map_ordinary *map)
+{
+  context->last_module = map;
+}
+
 void
 diagnostic_report_current_module (diagnostic_context *context, location_t where)
 {
@@ -552,9 +571,9 @@ diagnostic_report_current_module (diagnostic_context *context, location_t where)
 			    LRK_MACRO_DEFINITION_LOCATION,
 			    &map);
 
-  if (map && diagnostic_last_module_changed (context, map))
+  if (map && last_module_changed_p (context, map))
     {
-      diagnostic_set_last_module (context, map);
+      set_last_module (context, map);
       if (! MAIN_FILE_P (map))
 	{
 	  map = INCLUDED_FROM (line_table, map);

gcc/diagnostic.h

@@ -189,7 +189,7 @@ struct diagnostic_context
 
   /* Used to detect when the input file stack has changed since last
      described.  */
-  const struct line_map *last_module;
+  const line_map_ordinary *last_module;
 
   int lock;
 
@@ -241,16 +241,6 @@ diagnostic_inhibit_notes (diagnostic_context * context)
 /* Same as output_prefixing_rule.  Works on 'diagnostic_context *'.  */
 #define diagnostic_prefixing_rule(DC) ((DC)->printer->wrapping.rule)
 
-/* True if the last module or file in which a diagnostic was reported is
-   different from the current one.  */
-#define diagnostic_last_module_changed(DC, MAP)	\
-  ((DC)->last_module != MAP)
-
-/* Remember the current module or file as being the last one in which we
-   report a diagnostic.  */
-#define diagnostic_set_last_module(DC, MAP)	\
-  (DC)->last_module = MAP
-
 /* Raise SIGABRT on any diagnostic of severity DK_ERROR or higher.  */
 #define diagnostic_abort_on_error(DC) \
   (DC)->abort_on_error = true