X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeutil.h;h=122e217fc0238dcf9d40fad23c4dd01ccfdfffa6;hb=4d7a9507baf1737297cd4f7fc91eab209fd5d398;hp=386d86a7f233d8e71292c74e88fa8174be5bf275;hpb=4080eec4a207a1f6d231230677ecaacc16b87207;p=libfirm

diff --git a/ir/be/beutil.h b/ir/be/beutil.h
index 386d86a7f..122e217fc 100644
--- a/ir/be/beutil.h
+++ b/ir/be/beutil.h
@@ -2,13 +2,21 @@
 #ifndef _BEUTIL_H
 #define _BEUTIL_H
 
+#include "firm_config.h"
+
 #include <stdio.h>
 
+#include "pset.h"
 #include "irnode.h"
-#include "config.h"
-
 #include "bearch.h"
 
+/**
+ * Get an empty set.
+ * This function always returns the same set.
+ */
+pset *be_empty_set(void);
+
+
 /** Undefine this to disable debugging mode. */
 #define BE_DEBUG 1
 
@@ -41,10 +49,6 @@ static INLINE int is_data_node(const ir_node *irn)
 {
 	int i, n;
 
-	/* Unknowns do not exist, so they produce nothing */
-	if(get_irn_opcode(irn) == iro_Unknown)
-		return 0;
-
 	/* If the node produces a data value, return immediately. */
 	if(is_firm_be_mode(get_irn_mode(irn)))
 		return 1;
@@ -98,3 +102,10 @@ static INLINE FILE *ffopen(const char *base, const char *ext, const char *mode)
 void dump_ir_block_graph_sched(ir_graph *irg, const char *suffix);
 
 #endif
+
+/**
+ * Search for an irn in @p accept.
+ * The search is started at @p start_point_exclusive and continues upwards the dom-tree
+ * @return The first node out of accept if found. Else NULL is returned.
+ */
+ir_node *dom_up_search(pset *accept, ir_node *start_point_exclusive);