X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firopt.h;h=941d8836c0279505a01938bda3eae39da6554b0b;hb=cb91bddc9cacdab7c28e4336847bd3dc248aa549;hp=50519a7e75d92244963ccdaa30868387ad58afc1;hpb=6023590e8c7b401803f9b805886277de002efa19;p=libfirm

diff --git a/ir/ir/iropt.h b/ir/ir/iropt.h
index 50519a7e7..941d8836c 100644
--- a/ir/ir/iropt.h
+++ b/ir/ir/iropt.h
@@ -1,16 +1,23 @@
-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-* All rights reserved.
-*/
+/*
+ * Project:     libFIRM
+ * File name:   ir/ir/iropt.h
+ * Purpose:     iropt --- optimizations of an ir node.
+ * Author:      Martin Trapp, Christian Schaefer
+ * Modified by: Goetz Lindenmaier
+ * Created:
+ * CVS-ID:      $Id$
+ * Copyright:   (c) 1998-2003 Universität Karlsruhe
+ * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ */
 
 /**
 * @file iropt.h
 *
-* Declarations for optimizations intertwined with IR construction.
+* Declarations for optimizations of an ir node.
 *
 * @author Martin Trapp, Christian Schaefer
 */
 
-/* $Id$ */
 
 # ifndef _IROPT_H_
 # define _IROPT_H_
@@ -19,17 +26,24 @@
 # include "irgraph.h"
 # include "irflag.h"
 
-/* optimize_in_place (n) may change the contents of the ir_node itself,
-   [e.g. by making it a Id-node], but does not change its identity.
-   So it is safe to be called on already referenced nodes.
-
-   optimize_in_place (n) returns a pointer to a node equivalent to `n'
-   which should be used instead of `n'.
-
-   optimize (n) may deallocate `n' and everything allocated after `n'! */
-
-tarval  *computed_value (ir_node *n);
-
+/** If the expression referenced can be evaluated statically
+ *  computed_value returns a tarval representing the result.
+ *  Else returns tarval_bad. */
+tarval *computed_value (ir_node *n);
+
+/** Applies all optimizations to n that are expressible as a pattern
+ *  in Firm, i.e., they need not a walk of the graph.
+ *  Returns a better node for n.  Does not free n -- other nodes could
+ *  reference n.
+ *
+ *  An equivalent optimization is applied in the constructors defined in
+ *  ircons.ch.  There n is freed if a better node could be found.
+ */
 ir_node *optimize_in_place (ir_node *n);
 
+/**
+ * set the default ir op operations
+ */
+ir_op *firm_set_default_operations(ir_op *op);
+
 # endif /* _IROPT_H_ */