Remove the unused parameter const arch_env_t *env from arch_irn_get_flags(), arch_irn...

[libfirm] / ir / ir / iropt_t.h

diff --git a/ir/ir/iropt_t.h b/ir/ir/iropt_t.h
index 450261b..93267ae 100644 (file)
--- a/ir/ir/iropt_t.h
+++ b/ir/ir/iropt_t.h
@@ -26,21 +26,27 @@
 #ifndef FIRM_IR_IROPT_T_H
 #define FIRM_IR_IROPT_T_H
 
+#include "irop_t.h"
 #include "iropt.h"
 #include "irnode_t.h"
 #include "pset.h"
 #include "tv.h"
 
-ir_node *equivalent_node(ir_node *n);
-
 /**
  * Calculate a hash value of a node.
- * The hash value is calculated from the nodes predecessors.
- * Special handling for Const and SymConst nodes (these don't have predecessors).
  *
  * @param node  The IR-node
  */
-unsigned ir_node_hash(ir_node *node);
+unsigned ir_node_hash(const ir_node *node);
+
+/**
+ * equivalent_node() returns a node equivalent to input n. It skips all nodes that
+ * perform no actual computation, as, e.g., the Id nodes.  It does not create
+ * new nodes.  It is therefore safe to free n if the node returned is not n.
+ * If a node returns a Tuple we can not just skip it.  If the size of the
+ * in array fits, we transform n into a tuple (e.g., Div).
+ */
+ir_node *equivalent_node(ir_node *n);
 
 /**
  * Creates a new value table used for storing CSE identities.
@@ -82,14 +88,28 @@ ir_node *optimize_node(ir_node *n);
 ir_node *optimize_in_place_2(ir_node *n);
 
 /**
- * Returns the tarval of a Const node or tarval_bad for all other nodes.
+ * The value_of operation.
+ * This operation returns for every IR node an associated tarval if existing,
+ * returning tarval_bad otherwise.
+ * No calculations are done here, just a lookup.
+ */
+typedef tarval *(*value_of_func)(const ir_node *self);
+
+extern value_of_func value_of_ptr;
+
+/**
+ * Set a new value_of function.
+ *
+ * @param func  the function, NULL restores the default behavior
+ */
+void set_value_of_func(value_of_func func);
+
+/**
+ * Returns the associated tarval of a node.
  */
 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;
+value_of(const ir_node *n) {
+       return value_of_ptr(n);
 }
 
 /**