Correctly advance iterator in offloading machine mode stream reading

	gcc/
	* lto-streamer-in.c (lto_input_mode_table): Correctly advance
	iterator.

Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>

From-SVN: r226758

gcc/ChangeLog

+2015-08-10  Thomas Schwinge  <thomas@codesourcery.com>
+	    Ilya Verbin  <ilya.verbin@intel.com>
+
+	* lto-streamer-in.c (lto_input_mode_table): Correctly advance
+	iterator.
+
 2015-08-09  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
 	* doc/options.texi (EnabledBy): Document that the argument must be

gcc/lto-streamer-in.c

@@ -1573,7 +1573,7 @@ lto_input_mode_table (struct lto_file_decl_data *file_data)
 	for (machine_mode mr = pass ? VOIDmode
 				    : GET_CLASS_NARROWEST_MODE (mclass);
 	     pass ? mr < MAX_MACHINE_MODE : mr != VOIDmode;
-	     pass ? mr = (machine_mode) (m + 1)
+	     pass ? mr = (machine_mode) (mr + 1)
 		  : mr = GET_MODE_WIDER_MODE (mr))
 	  if (GET_MODE_CLASS (mr) != mclass
 	      || GET_MODE_SIZE (mr) != size