reset node index on dead node elimination

[libfirm] / ir / ir / iropt_t.h

diff --git a/ir/ir/iropt_t.h b/ir/ir/iropt_t.h
index 996c336..29d3b3b 100644 (file)
--- a/ir/ir/iropt_t.h
+++ b/ir/ir/iropt_t.h
@@ -23,6 +23,7 @@
 
 # include "pset.h"
 # include "iropt.h"
+# include "tv.h"
 
 ir_node *equivalent_node (ir_node *n);
 
@@ -38,5 +39,42 @@ ir_node *optimize_node (ir_node *n);
 
 ir_node *optimize_in_place_2 (ir_node *n);
 
+/** Calculate a hash value of a node. */
+unsigned ir_node_hash (ir_node *node);
+
+/**
+ * Compare function for two nodes in the hash table. Gets two
+ * nodes as parameters.  Returns 0 if the nodes are a cse.
+ */
+int identities_cmp(const void *elt, const void *key);
+
+/**
+ * Return the canonical node computing the same value as n.
+ * Looks up the node in a hash table, enters it in the table
+ * if it isn't there yet.
+ */
+ir_node *identify_remember(pset *value_table, ir_node *n);
+
+/**
+ * Returns the tarval of a Const node or tarval_bad for all other nodes.
+ */
+static INLINE tarval *
+value_of(ir_node *n) {
+  if ((n != NULL) && (get_irn_op(n) == op_Const))
+    return get_Const_tarval(n); /* might return tarval_bad */
+  else
+    return tarval_bad;
+}
+
+/**
+ * Sets the default operation for an ir_op_ops.
+ *
+ * @param code   the opcode for the default operation
+ * @param ops    the operations initialized
+ *
+ * @return
+ *    The operations.
+ */
+ir_op_ops *firm_set_default_operations(opcode code, ir_op_ops *ops);
 
 # endif /* _IROPT_T_H_ */