- cleaned up irp functions a bit

[libfirm] / ir / ana / irextbb.c

diff --git a/ir/ana/irextbb.c b/ir/ana/irextbb.c
index fe99ffc..ebc5551 100644 (file)
--- a/ir/ana/irextbb.c
+++ b/ir/ana/irextbb.c
@@ -24,9 +24,7 @@
  * @date     5.2005
  * @version  $Id$
  */
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
 
 #include "irextbb_t.h"
 #include "irgwalk.h"
@@ -37,6 +35,9 @@
 #include "xmalloc.h"
 #include "irprintf.h"
 
+/**
+ * Environment for extbb construction.
+ */
 typedef struct _env {
        struct obstack *obst;   /**< the obstack where allocations took place */
        ir_extblk *head;        /**< head of the list of all extended blocks */
@@ -274,8 +275,8 @@ void free_extbb(ir_graph *irg) {
 }
 
 /* Return the extended block of a node. */
-ir_extblk *get_nodes_extbb(ir_node *node) {
-       ir_node *block = is_Block(node) ? node : get_irn_n(node, -1);
+ir_extblk *get_nodes_extbb(const ir_node *node) {
+       const ir_node *block = is_Block(node) ? node : get_nodes_block(node);
        return get_Block_extbb(block);
 }
 
@@ -320,17 +321,17 @@ int (get_extbb_n_blocks)(const ir_extblk *blk) {
 }
 
 /* Return the i'th basic block of an extended block */
-ir_node *(get_extbb_block)(ir_extblk *blk, int pos) {
+ir_node *(get_extbb_block)(const ir_extblk *blk, int pos) {
        return _get_extbb_block(blk, pos);
 }
 
 /* Return the leader basis block of an extended block. */
-ir_node *(get_extbb_leader)(ir_extblk *blk) {
+ir_node *(get_extbb_leader)(const ir_extblk *blk) {
        return _get_extbb_leader(blk);
 }
 
 /* Return the node number of an extended block. */
-long get_extbb_node_nr(ir_extblk *blk) {
+long get_extbb_node_nr(const ir_extblk *blk) {
        return get_irn_node_nr(get_extbb_leader(blk));
 }