*
* @param node the node
*/
-ir_extblk *get_nodes_extbb(ir_node *node);
+ir_extblk *get_nodes_extbb(const ir_node *node);
/**
* Gets the visited counter of an extended block.
* @param blk the extended basic block
* @param pos the position
*/
-ir_node *get_extbb_block(ir_extblk *blk, int pos);
+ir_node *get_extbb_block(const ir_extblk *blk, int pos);
/**
* Return the leader basic block of an extended block.
*
* @param blk the extended basic block
*/
-ir_node *get_extbb_leader(ir_extblk *blk);
+ir_node *get_extbb_leader(const ir_extblk *blk);
/**
* Return the node number of an extended block.
*
* @param blk the extended basic block
*/
-long get_extbb_node_nr(ir_extblk *blk);
+long get_extbb_node_nr(const ir_extblk *blk);
/**
* Walks only over Extended Basic Block nodes in the graph.