** traverse an ir graph
** - execute the pre function before recursion
** - execute the post function after recursion
+**
+** Uses current_ir_graph (from irgraph.h)!!! Set it to the proper
+** graph before starting the walker.
*/
# include "irnode.h"
+/* Walks over the ir graph, starting at the node given as first argument.
+ Executes pre before visiting the predecessor of a node, post after.
+ irg_walk uses the visited flag in irg and the nodes to determine visited
+ nodes. It executes inc_irg_visited(current_ir_graph) to generate a new
+ flag. It marks the node as visited before executing pre.
+ The void* env can be used to pass status information between the
+ pre and post functions. */
void irg_walk(ir_node *node,
void (pre)(ir_node*, void*), void (post)(ir_node*, void*),
void *env);
-/* walks only over Block nodes in the graph. Has it's own visited
+/* Walks only over Block nodes in the graph. Has it's own visited
flag, so that it can be interleaved with the other walker. */
void irg_block_walk(ir_node *node,
void (pre)(ir_node*, void*), void (post)(ir_node*, void*),