tree-ssa-loop-ivopts.c (get_computation_cost_at): Check inv expression pointer,…

tree-ssa-loop-ivopts.c (get_computation_cost_at): Check inv expression pointer, not pointer to the pointer.

	* tree-ssa-loop-ivopts.c (get_computation_cost_at): Check inv
	expression pointer, not pointer to the pointer.

From-SVN: r236371

gcc/ChangeLog

+2016-05-18 Bin Cheng  <bin.cheng@arm.com>
+
+	* tree-ssa-loop-ivopts.c (get_computation_cost_at): Check invariant
+	expression pointer, not pointer to the pointer.
+
 2016-05-18  Jakub Jelinek  <jakub@redhat.com>
 
 	* config/i386/sse.md (pbroadcast_evex_isa): New mode attr.

gcc/tree-ssa-loop-ivopts.c

@@ -4874,7 +4874,7 @@ get_computation_cost_at (struct ivopts_data *data,
       *inv_expr = get_loop_invariant_expr (data, ubase, cbase, ratio,
 					   address_p);
       /* Clear depends on.  */
-      if (inv_expr != NULL)
+      if (*inv_expr != NULL)
 	bitmap_clear (*depends_on);
     }