X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeutil.h;h=5a0c4f08a56b2047ad647951435eeeb30ccf7072;hb=6f965967e27f2e4db1a7dbf5d050bd415fceeb5b;hp=15dcebd31959ffe98922aad302be59760e533fb8;hpb=111503924bac361d3db429f4bdd30532165a1652;p=libfirm

diff --git a/ir/be/beutil.h b/ir/be/beutil.h
index 15dcebd31..5a0c4f08a 100644
--- a/ir/be/beutil.h
+++ b/ir/be/beutil.h
@@ -1,56 +1,71 @@
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
 
-#ifndef _BEUTIL_H
-#define _BEUTIL_H
-
-#include <stdio.h>
-
-#include "irnode.h"
-#include "config.h"
+/**
+ * @file
+ * @brief       Contains some useful function for the backend.
+ * @author      Sebastian Hack
+ */
+#ifndef FIRM_BE_BEUTIL_H
+#define FIRM_BE_BEUTIL_H
 
-/** Undefine this to disable debugging mode. */
-#define BE_DEBUG 1
+#include "firm_types.h"
 
 /**
- * Check, if a node produces or consumes a data value.
- * If it does, it is significant for scheduling and register allocation.
- * A node produces/consumes a data value, if one of its operands is of
- * mode datab, or his retuning mode is of mode datab.
- * @param irn The node to check for.
- * @return 1, if the node is a data node, 0 if not.
+ * Convenient block getter.
+ * Works also, if the given node is a block.
+ * @param  irn The node.
+ * @return The block of the node, or the node itself, if the node is a
+ *         block.
  */
-static INLINE int is_data_node(const ir_node *irn)
+static inline ir_node *get_block(ir_node *irn)
 {
-	int i, n;
-
-	/* If the node produces a data value, return immediately. */
-	if(mode_is_datab(get_irn_mode(irn)))
-		return 1;
-
-	/* else check, if it takes a data value, if that is so, return */
-	for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
-		ir_node *op = get_irn_n(irn, i);
-		if(mode_is_datab(get_irn_mode(op)))
-			return 1;
-	}
+	return is_Block(irn) ? irn : get_nodes_block(irn);
+}
 
-	/* Else the node does not produce/consume a data value */
-	return 0;
+static inline const ir_node *get_block_const(const ir_node *irn)
+{
+	return is_Block(irn) ? irn : get_nodes_block(irn);
 }
 
 /**
- * Make each constant local to its use.
- * This duplicates all constants in order to simulate a realistic
- * register pressure.
+ * Clears the link fields of all nodes of the given graph.
  * @param irg The graph.
  */
-void localize_consts(ir_graph *irg);
+void be_clear_links(ir_graph *irg);
+
+/**
+ * Gets the Proj with number pn from irn.
+ */
+ir_node *be_get_Proj_for_pn(const ir_node *irn, long pn);
+
+/**
+ * Returns an array (an ARR_F) of the programs blocks in reverse postorder
+ * (note: caller has to free the memory with DEL_ARR_F after use;
+ *  of course you can use ARR_LEN on the array too.)
+ */
+ir_node **be_get_cfgpostorder(ir_graph *irg);
 
 /**
- * Dump a vcg graph containing the controlflow graph, the schedule and
- * allocated registers.
- * @param irg The irg. Note that scheduling, register allocation must
- * have been performed.
+ * convenience function to return the first successor block
+ * (it is often known that there is exactly 1 successor anyway)
  */
-void dump_allocated_irg(ir_graph *irg, char *suffix);
+ir_node *get_first_block_succ(const ir_node *block);
 
 #endif