tree-switch-conversion.c (build_one_array): Set DECL_IGNORED_P for CSWTCH temporary.

	* tree-switch-conversion.c (build_one_array): Set DECL_IGNORED_P
	for CSWTCH temporary.

From-SVN: r223572

gcc/ChangeLog

+2015-05-22  Aldy Hernandez  <aldyh@redhat.com>
+
+	* tree-switch-conversion.c (build_one_array): Set DECL_IGNORED_P
+	for CSWTCH temporary.
+
 2015-05-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* config/arm/arm.c (arm_new_rtx_costs): Handle UNSPEC_VOLATILE.

gcc/tree-switch-conversion.c

@@ -1095,6 +1095,7 @@ build_one_array (gswitch *swtch, int num, tree arr_index_type,
 
       DECL_NAME (decl) = create_tmp_var_name ("CSWTCH");
       DECL_ARTIFICIAL (decl) = 1;
+      DECL_IGNORED_P (decl) = 1;
       TREE_CONSTANT (decl) = 1;
       TREE_READONLY (decl) = 1;
       varpool_node::finalize_decl (decl);