tree-vect-data-refs.c (vect_analyze_data_ref_accesses): Initialize ng to silence…

tree-vect-data-refs.c (vect_analyze_data_ref_accesses): Initialize ng to silence error with release checking bootstrap.

2018-10-25  Richard Biener  <rguenther@suse.de>

	* tree-vect-data-refs.c (vect_analyze_data_ref_accesses):
	Initialize ng to silence error with release checking bootstrap.

From-SVN: r265491

gcc/ChangeLog

 2018-10-25  Richard Biener  <rguenther@suse.de>
 
+	* tree-vect-data-refs.c (vect_analyze_data_ref_accesses):
+	Initialize ng to silence error with release checking bootstrap.
+
+2018-10-25  Richard Biener  <rguenther@suse.de>
+
 	* tree-if-conv.c: Include tree-ssa-sccvn.h.
 	(tree_if_conversion): Run CSE on the if-converted loop body.
 

gcc/tree-vect-data-refs.c

@@ -3001,7 +3001,7 @@ vect_analyze_data_ref_accesses (vec_info *vinfo)
          Note this is a heuristic but one with the property that *it
 	 is fixed up completely.  */
       g = grp;
-      stmt_vec_info newgroup = NULL, ng;
+      stmt_vec_info newgroup = NULL, ng = grp;
       while ((next = DR_GROUP_NEXT_ELEMENT (g)))
 	{
 	  if (gimple_uid (STMT_VINFO_STMT (next)) >= first_duplicate)