# define _IROP_T_H_
# include "irop.h"
+# include "tv.h"
/** The allowed parities */
typedef enum {
irop_flag_ip_cfopcode = 0x00000008, /**< operation manipulates interprocedural control flow */
irop_flag_fragile = 0x00000010, /**< set if the operation can change the control flow because
of an exception */
+ irop_flag_forking = 0x00000020, /**< the operation is a forking control flow */
} irop_flags;
-/** the type of an ir_op */
+/**
+ * The compute value operation.
+ * This operation evaluates an IR node into a tarval if possible,
+ * returning tarval_bad otherwise.
+ */
+typedef tarval *(*computed_value_func)(ir_node *n);
+
+/**
+ * The equivalent node operation.
+ * This operation returns an equivalent node for the input node.
+ * 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., possible for Div).
+ */
+typedef ir_node *(*equivalent_node_func)(ir_node *n);
+
+/**
+ * The transform node operation.
+ * This operation tries several [inplace] [optimizing] transformations
+ * and returns an equivalent node.
+ * The difference to equivalent_node() is that these
+ * transformations _do_ generate new nodes, and thus the old node must
+ * not be freed even if the equivalent node isn't the old one.
+ */
+typedef ir_node *(*transform_node_func)(ir_node *n);
+
+/**
+ * The node attribute compare operation.
+ * Compares the nodes attributes of two nodes of identical opcode
+ * and returns 0 if the attributes are identical, 1 if they differ.
+ */
+typedef int (*node_cmp_attr_func)(ir_node *a, ir_node *b);
+
+/**
+ * The reassociation operation.
+ * Called from a walker. Returns non-zero if
+ * a reassociation rule was applied.
+ */
+typedef int (*reassociate_func)(ir_node *n);
+
+/**
+ * The copy attribute operation.
+ * Copy the node attributes from a 'old' node to a 'new' one.
+ */
+typedef void (*copy_attr_func)(const ir_node *old_node, ir_node *new_node);
+
+/** The type of an ir_op. */
struct ir_op {
opcode code; /**< the unique opcode of the op */
ident *name; /**< the name of the op */
size_t attr_size; /**< Space needed in memory for private attributes */
- op_pinned pinned; /**< How to deal with the node in cse, pre. */
+ op_pin_state op_pin_state_pinned; /**< How to deal with the node in cse, pre. */
op_arity opar; /**< arity of operator. */
int op_index; /**< the index of the first data operand, 0 for most cases, 1 for Div etc. */
unsigned flags; /**< flags describing the behavior of the ir_op, a bitmaks of irop_flags */
+
+ /* CallBacks */
+ computed_value_func computed_value; /**< evaluates a node into a tarval if possible. */
+ equivalent_node_func equivalent_node; /**< optimizes the node by returning an equivalent one. */
+ transform_node_func transform_node; /**< optimizes the node by transforming it. */
+ node_cmp_attr_func node_cmp_attr; /**< compares two node attributes. */
+ reassociate_func reassociate; /**< reassociate a tree */
+ copy_attr_func copy_attr; /**< copy node attributes */
};
/**
*
* @param code the opcode, one of type \c opcode
* @param name the printable name of this opcode
- * @param p wheater operations of this opcode are pinned or floating
+ * @param p wheater operations of this opcode are op_pin_state_pinned or floating
* @param flags a bitmask of irop_flags describing the behavior of the ir operation
* @param opar the parity of this ir operation
* @param op_index if the parity is oparity_unary, oparity_binary or oparity_trinary the index
*
* @return The genenerated ir operation.
*/
-ir_op * new_ir_op(opcode code, const char *name, op_pinned p,
+ir_op * new_ir_op(opcode code, const char *name, op_pin_state p,
unsigned flags, op_arity opar, int op_index, size_t attr_size);
/**
/** Free memory used by irop module. */
void finish_op(void);
+/**
+ * Copies simply all attributes stored in the old node to the new node.
+ * Assumes both have the same opcode and sufficient size.
+ */
+void default_copy_attr(const ir_node *old_node, ir_node *new_node);
+
/** Returns the attribute size of nodes of this opcode.
@note Use not encouraged, internal feature. */
static INLINE int get_op_attr_size (const ir_op *op) {
return op->flags & irop_flag_fragile;
}
+/* Returns non-zero if operation is forking control flow */
+static INLINE int is_op_forking(const ir_op *op) {
+ return op->flags & irop_flag_forking;
+}
+
+static INLINE opcode __get_op_code(const ir_op *op) {
+ return op->code;
+}
+
+static INLINE ident *__get_op_ident(ir_op *op){
+ return op->name;
+}
+
+static INLINE op_pin_state __get_op_pinned(const ir_op *op) {
+ return op->op_pin_state_pinned;
+}
+
+
+#define get_op_code(op) __get_op_code(op)
+#define get_op_ident(op) __get_op_ident(op)
+#define get_op_pinned(op) __get_op_pinned(op)
+
+
#endif /* _IROP_T_H_ */
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