X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firgwalk.h;h=1983be47071a2334fca4a972e2a749534b25d0f7;hb=8399216d8aebc713bbda04b6e3e250a1d52b20bf;hp=a40dcd8aa192a242a5b43d4feb95e7b039343873;hpb=dffd3e5d091f27cc3ddbfed27f27b48fc0e52c29;p=libfirm

diff --git a/ir/ir/irgwalk.h b/ir/ir/irgwalk.h
index a40dcd8aa..1983be470 100644
--- a/ir/ir/irgwalk.h
+++ b/ir/ir/irgwalk.h
@@ -44,12 +44,6 @@
 typedef void irg_walk_func(ir_node *node, void *env);
 #endif
 
-/** Allocates some necessary datastructures. */
-void init_ip_walk(void);
-
-/** Frees some necessary datastructures. */
-void finish_ip_walk(void);
-
 /**
  * Walks over the ir graph.
  *
@@ -60,7 +54,7 @@ void finish_ip_walk(void);
  * flag.  Therefore current_ir_graph must be set before calling the walker.
  * 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.  Does not use the link field.
+ * pre and post functions.  Does not use the link fields.
  *
  * @param node - the start node
  * @param pre  - walker function, executed before the predecessor of a node are visited
@@ -111,8 +105,7 @@ void all_irg_walk(irg_walk_func *pre, irg_walk_func *post, void *env);
  */
 void cg_walk(irg_walk_func *pre, irg_walk_func *post, void *env);
 
-/**
- * Walks only over Block nodes in the graph.
+/** Walks only over Block nodes in the graph.
  *
  * @param node - the start node
  * @param pre  - walker function, executed before the predecessor of a node are visited
@@ -151,4 +144,40 @@ void irg_block_walk_graph(ir_graph *irg, irg_walk_func *pre, irg_walk_func *post
  */
 void walk_const_code(irg_walk_func *pre, irg_walk_func *post, void *env);
 
+/**
+ * Walks over reachable nodes in block-wise order, i.e. visit all nodes in a block
+ * before going to another block, starting at the node given as first argument.
+ * Executes pre before visiting the predecessor of a node, post after.
+ * irg_walk_blkwise() 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.  Therefore current_ir_graph must be set before calling the walker.
+ * 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.  Does not use the link fields.
+ * Do NOT leave the graph in interprocedural view.
+ *
+ * @param pre  - walker function, executed before the predecessor of a node are visited
+ * @param post - walker function, executed after the predecessor of a node are visited
+ * @param env  - environment, passend to pre and post
+ *
+ * This function works like irg_walk, except that it enters and leaves blocks only once.
+ * So, the post walker see a 'valid schedule' of the code, the pre-walker a 'reversed schedule'
+ */
+void irg_walk_blkwise(ir_node *node, irg_walk_func *pre, irg_walk_func *post, void *env);
+
+/**
+ * Walks over all reachable nodes in the ir graph in block-wise order.
+ *
+ * @param irg  - the irg graph
+ * @param pre  - walker function, executed before the predecessor of a node are visited
+ * @param post - walker function, executed after the predecessor of a node are visited
+ * @param env  - environment, passend to pre and post
+ *
+ * Like irg_walk_blkwise(), but walks over all reachable nodes in the ir
+ * graph, starting at the end operation. During the walk current_ir_graph
+ * is set to irg.  Does not use the link fields.
+ * Do NOT leave the graph in interprocedural view.
+ */
+void irg_walk_blkwise_graph(ir_graph *irg, irg_walk_func *pre, irg_walk_func *post, void *env);
+
 # endif /* _IRGWALK_H_ */