Fix string pool statistics.

2018-11-05  Martin Liska  <mliska@suse.cz>

	* symtab.c (ht_dump_statistics): Make dump conditional
	based on alloc_subobject.

From-SVN: r265797

libcpp/ChangeLog

+2018-11-05  Martin Liska  <mliska@suse.cz>
+
+	* symtab.c (ht_dump_statistics): Make dump conditional
+	based on alloc_subobject.
+
 2018-10-31  Joseph Myers  <joseph@codesourcery.com>
 
 	PR bootstrap/82856

libcpp/symtab.c

@@ -304,7 +304,6 @@ ht_dump_statistics (cpp_hash_table *table)
   while (++p < limit);
 
   nelts = table->nelements;
-  overhead = obstack_memory_used (&table->stack) - total_bytes;
   headers = table->nslots * sizeof (hashnode);
 
   fprintf (stderr, "\nString pool\nentries\t\t%lu\n",
@@ -315,9 +314,16 @@ ht_dump_statistics (cpp_hash_table *table)
 	   (unsigned long) table->nslots);
   fprintf (stderr, "deleted\t\t%lu\n",
 	   (unsigned long) deleted);
-  fprintf (stderr, "bytes\t\t%lu%c (%lu%c overhead)\n",
-	   SCALE (total_bytes), LABEL (total_bytes),
-	   SCALE (overhead), LABEL (overhead));
+
+  if (table->alloc_subobject)
+    fprintf (stderr, "GGC bytes\t%lu%c\n",
+	     SCALE (total_bytes), LABEL (total_bytes));
+  else
+    {
+      overhead = obstack_memory_used (&table->stack) - total_bytes;
+      fprintf (stderr, "obstack bytes\t%lu%c (%lu%c overhead)\n",
+	       SCALE (total_bytes), LABEL (total_bytes));
+    }
   fprintf (stderr, "table size\t%lu%c\n",
 	   SCALE (headers), LABEL (headers));