valueset: Remove the unused link field.

ir/ir/valueset.c

@@ -147,20 +147,6 @@ void *ir_valueset_lookup(const ir_valueset_t *valueset, const ir_node *value)
 	return NULL;
 }
 
-void ir_valueset_set_link(const ir_valueset_t *valueset, const ir_node *value, void *link)
-{
-	ir_valueset_entry_t *entry = ir_valueset_find_(valueset, value);
-	assert(entry);
-	entry->link = link;
-}
-
-void *ir_valueset_get_link(const ir_valueset_t *valueset, const ir_node *value)
-{
-	ir_valueset_entry_t *entry = ir_valueset_find_(valueset, value);
-	assert(entry);
-	return entry->link;
-}
-
 void ir_valueset_iterator_init(ir_valueset_iterator_t *iterator,
                                const ir_valueset_t *valueset)
 {

ir/ir/valueset.h

@@ -32,7 +32,6 @@
 typedef struct ir_valueset_entry_t {
 	ir_node     *value;  /**< the represented value */
 	ir_node     *expr;   /**< the leader expression for the value in the current set */
-	void        *link;   /**< additional attached information */
 	list_head   list;    /**< link field for the list iterator */
 } ir_valueset_entry_t;
 
@@ -108,24 +107,6 @@ static inline void ir_valueset_del(ir_valueset_t *valueset) {
  */
 int ir_valueset_insert(ir_valueset_t *valueset, ir_node *value, ir_node *expr);
 
-/**
- * Sets link of the element associated with specified value.
- *
- * @param valueset  Pointer to the value set.
- * @param value     Value of the element.
- * @param link      Link to be set in element.
- */
-void ir_valueset_set_link(const ir_valueset_t *valueset, const ir_node *value, void *link);
-
-/**
- * Get the link of the element associated with specified value.
- *
- * @param valueset  Pointer to the value set.
- * @param value     Value of the element.
- * @returns         Link of the element associated to the value.
- */
-void *ir_valueset_get_link(const ir_valueset_t *valueset, const ir_node *value);
-
 /**
  * Inserts a (value, expression) pair into a valueset if the value is not already
  * known, else replace the expression for the given value.