ir: Use add_irn_deps().

include/libfirm/irnode.h

@@ -77,7 +77,7 @@ FIRM_API void add_irn_dep(ir_node *node, ir_node *dep);
  * @param tgt The node which should be enriched.
  * @param src The node whose dependencies shall be copied.
  */
-FIRM_API void add_irn_deps(ir_node *tgt, ir_node *src);
+FIRM_API void add_irn_deps(ir_node *tgt, ir_node const *src);
 
 /**
  * Returns the number of dependency predecessors/edges of node @p node.

ir/common/irtools.c

@@ -121,10 +121,7 @@ ir_node *irn_copy_into_irg(const ir_node *node, ir_graph *irg)
 	copy_node_attr(irg, node, res);
 
 	/* duplicate dependency edges */
-	for (int i = 0, n_deps = get_irn_n_deps(node); i < n_deps; ++i) {
-		ir_node *dep = get_irn_dep(node, i);
-		add_irn_dep(res, dep);
-	}
+	add_irn_deps(res, node);
 
 	return res;
 }

ir/ir/irnode.c

@@ -296,7 +296,7 @@ void delete_irn_dep(ir_node *node, ir_node *dep)
 	}
 }
 
-void add_irn_deps(ir_node *tgt, ir_node *src)
+void add_irn_deps(ir_node *const tgt, ir_node const *const src)
 {
 	for (int i = 0, n = get_irn_n_deps(src); i < n; ++i)
 		add_irn_dep(tgt, get_irn_dep(src, i));