X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Flibfirm%2Fvrp.h;h=ef5234b4515e67bd3fbdfff2acce827d81265e05;hb=64252961a7d41265ff28353949e63f0662a1cd03;hp=48478eaa55d57e145d907bf7fb916b5531823eda;hpb=9d3c8631459f431c313160dab5778e8a7b88dd92;p=libfirm

diff --git a/include/libfirm/vrp.h b/include/libfirm/vrp.h
index 48478eaa5..ef5234b45 100644
--- a/include/libfirm/vrp.h
+++ b/include/libfirm/vrp.h
@@ -21,8 +21,6 @@
  * @file
  * @brief   Analyse the graph with value range propagation
  * @author  Jonas Fietz
- * @version $Id$
- *
  */
 #ifndef VRP_H
 #define VRP_H
@@ -30,6 +28,14 @@
 #include "firm_types.h"
 #include "begin.h"
 
+/**
+ * @ingroup irana
+ * @defgroup vrp  Value Information
+ * Information about SSA-values (ranges, known bits, ...)
+ * @{
+ */
+
+/** Type of a value range */
 enum range_types {
 	VRP_UNDEFINED, /**< No information could be derived so far */
 	VRP_RANGE,     /**< bottom and top form a range, including both values */
@@ -38,43 +44,50 @@ enum range_types {
 	VRP_VARYING    /**< information cannot be derived */
 };
 
-/** VRP information */
+/** VRP information for a single node */
 typedef struct {
-	int valid;                   /**< This node has valid vrp information */
-	ir_tarval *bits_set;         /**< The bits which, by analysis, are  definitely set.
-	                                  0: may be not set, 1: definitely set*/
+	ir_tarval *bits_set;         /**< The bits which, by analysis, are
+	                                  definitely set:
+	                                  0: may be not set, 1: definitely set */
 	ir_tarval *bits_not_set;     /**< The bits which by analysis are definitely
-	                                  not set, 1 for may be set, 0: definitely not set  */
+	                                  not set:
+	                                  1 for may be set, 0: definitely not set */
 	enum range_types range_type; /**< The range represented by range_top, range_bottom */
-	ir_tarval *range_bottom;
-	ir_tarval *range_top;
+	ir_tarval *range_bottom;     /**< lower end of the value range */
+	ir_tarval *range_top;        /**< upper end of the value range */
 } vrp_attr;
 
 /**
- * Set vrp data on the graph irg
+ * Sets vrp data on the graph irg
  * @param irg graph on which to set vrp data
  */
 FIRM_API void set_vrp_data(ir_graph *irg);
 
+/**
+ * free vrp infos in an irg
+ */
+FIRM_API void free_vrp_data(ir_graph *irg);
+
 /**
  * Test, if the two nodes can be compared with their vrp information
  *
  * @param left: the left node
  * @param right: the right node
- *
- * @return the pn_Cmp, if one can be derived
+ * @return all possible relations
  */
-FIRM_API pn_Cmp vrp_cmp(const ir_node *left, const ir_node *right);
+FIRM_API ir_relation vrp_cmp(const ir_node *left, const ir_node *right);
 
-/*
- * Return the vrp data for this node
+/**
+ * Returns the vrp data for this node
+ * Note: only allowed for nodes with an integer mode!
  *
  * @param n: the node for which to return the vrp information
- *
  * @return a pointer to the vrp data or NULL if there is none
  */
 FIRM_API vrp_attr *vrp_get_info(const ir_node *n);
 
+/** @} */
+
 #include "end.h"
 
 #endif