added functions to get copy op

ir/be/benode.c

@@ -335,6 +335,10 @@ ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *b
 	return res;
 }
 
+ir_node *be_get_Copy_op(const ir_node *cpy) {
+	return get_irn_n(cpy, be_pos_Copy_op);
+}
+
 ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int n, ir_node *in[])
 {
 	int i;
@@ -913,7 +917,7 @@ static void *put_out_reg_req(arch_register_req_t *req, const ir_node *irn, int o
 
 		if(be_is_Copy(irn)) {
 			req->type |= arch_register_req_type_should_be_same;
-			req->other_same = get_irn_n(irn, be_pos_Copy_orig);
+			req->other_same = be_get_Copy_op(irn);
 		}
 	}
 	else {

ir/be/benode_t.h

@@ -103,9 +103,11 @@ enum {
 ir_node *be_new_Reload(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *spill_node, ir_mode *mode);
 
 enum {
-	be_pos_Copy_orig = 0
+	be_pos_Copy_op = 0
 };
 ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *block, ir_node *in);
+ir_node *be_get_Copy_op(const ir_node *cpy);
+
 ir_node *be_new_Perm(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
 ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
 

ir/be/beraextern.c

@@ -627,7 +627,7 @@ static void dump_affinities_walker(ir_node *irn, void *env) {
 
 	/* copies have affinities */
 	if (arch_irn_classify(raenv->aenv, irn) == arch_irn_class_copy) {
-		ir_node *other = get_irn_n(irn, be_pos_Copy_orig);
+		ir_node *other = be_get_Copy_op(irn);
 
 		if (! arch_irn_is(raenv->aenv, other, ignore)) {
 			vi2 = get_var_info(other);

ir/be/bespillbelady.c

@@ -597,7 +597,7 @@ static void remove_copies(belady_env_t *bel) {
 
 		user = get_irn_edge(get_irn_irg(irn), irn, 0)->src;
 
-		src = get_irn_n(irn, be_pos_Copy_orig);
+		src = be_get_Copy_op(irn);
 		set_irn_n(user, 0, src);
 	}
 }