simplify confusing entity/owner interfaces. There is no public way anymore to add...

[libfirm] / ir / opt / opt_confirms.h

diff --git a/ir/opt/opt_confirms.h b/ir/opt/opt_confirms.h
index 5b3715a..2afbe7c 100644 (file)
--- a/ir/opt/opt_confirms.h
+++ b/ir/opt/opt_confirms.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -17,29 +17,23 @@
  * PURPOSE.
  */
 
-/*
- * Project:     libFIRM
- * File name:   ir/opt/opt_confirms.h
- * Purpose:     Optimizations regarding Confirm nodes
- * Author:      Michael Beck
- * Modified by:
- * Created:
- * CVS-ID:      $Id$
- * Copyright:   (c) 1998-2005 Universität Karlsruhe
- * License:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
- */
-#ifndef _OPT_CONFIRMS_H_
-#define _OPT_CONFIRMS_H_
-
-#include "irnode.h"
-
-/**a
- * @file opt_confirms.h
+/**
+ * @file
+ * @brief   Optimizations regarding Confirm nodes.
+ * @author  Michael Beck
+ * @version $Id$
  *
  * Optimizations regarding Confirm nodes.
  * These optimizations are not means to be run from
  * frontends, they are called from iropt.
  */
+#ifndef FIRM_OPT_CONFIRMS_H
+#define FIRM_OPT_CONFIRMS_H
+
+#include "firm_types.h"
+
+/** Needed for MSVC to suporess warnings because it doest NOT handle const right. */
+typedef const ir_node *ir_node_cnst_ptr;
 
 /**
  * Check, if the value of a node is != 0.
@@ -51,12 +45,12 @@
  * @param confirm  if n is confirmed to be != 0, returns
  *                 the the Confirm-node, else NULL
  */
-int value_not_zero(ir_node *n, ir_node **confirm);
+int value_not_zero(const ir_node *n, ir_node_cnst_ptr *confirm);
 
 /**
  * Check, if the value of a node cannot represent a NULL pointer.
  *
- * - If sel_based_null_check_elim is enabled, all
+ * - If option sel_based_null_check_elim is enabled, all
  *   Sel nodes can be skipped.
  * - A SymConst(entity) is NEVER a NULL pointer
  * - A Const != NULL is NEVER a NULL pointer
@@ -66,16 +60,16 @@ int value_not_zero(ir_node *n, ir_node **confirm);
  * @param confirm  if n is confirmed to be != NULL, returns
  *                 the the Confirm-node, else NULL
  */
-int value_not_null(ir_node *n, ir_node **confirm);
+int value_not_null(const ir_node *n, ir_node_cnst_ptr *confirm);
 
 /**
  * Possible return values of value_classify().
  */
 typedef enum _value_classify_sign {
-  value_classified_unknown  = 0,   /**< could not classify */
-  value_classified_positive = 1,   /**< value is positive, i.e. >= 0 */
-  value_classified_negative = -1   /**< value is negative, i.e. <= 0 if
-                                        no signed zero exists or < 0 else */
+       value_classified_unknown  = 0,   /**< could not classify */
+       value_classified_positive = 1,   /**< value is positive, i.e. >= 0 */
+       value_classified_negative = -1   /**< value is negative, i.e. <= 0 if
+                                             no signed zero exists or < 0 else */
 } value_classify_sign;
 
 /**
@@ -98,4 +92,4 @@ value_classify_sign classify_value_sign(ir_node *n);
  */
 tarval *computed_value_Cmp_Confirm(ir_node *cmp, ir_node *left, ir_node *right, pn_Cmp pnc);
 
-#endif /* _OPT_CONFIRMS_H_ */
+#endif /* FIRM_OPT_CONFIRMS_H */