irloop.h

/*
 * This file is part of libFirm.
 * Copyright (C) 2012 University of Karlsruhe.
 */

#ifndef FIRM_ANA_IRLOOP_H
#define FIRM_ANA_IRLOOP_H

#include <stddef.h>

#include "firm_types.h"
#include "firm_common.h"
#include "begin.h"

FIRM_API int is_backedge(const ir_node *n, int pos);
FIRM_API void set_backedge(ir_node *n, int pos);
FIRM_API int has_backedges(const ir_node *n);
FIRM_API void clear_backedges(ir_node *n);

typedef union {
    firm_kind *kind; 
    ir_node  *node;  
    ir_loop  *son;   
    ir_graph *irg;   
} loop_element;

FIRM_API void set_irg_loop(ir_graph *irg, ir_loop *l);

FIRM_API ir_loop *get_irg_loop(const ir_graph *irg);

FIRM_API ir_loop *get_irn_loop(const ir_node *n);

FIRM_API ir_loop *get_loop_outer_loop(const ir_loop *loop);
FIRM_API unsigned get_loop_depth(const ir_loop *loop);

FIRM_API size_t get_loop_n_elements(const ir_loop *loop);

FIRM_API loop_element get_loop_element(const ir_loop *loop, size_t pos);

FIRM_API long get_loop_loop_nr(const ir_loop *loop);

FIRM_API void set_loop_link(ir_loop *loop, void *link);
FIRM_API void *get_loop_link(const ir_loop *loop);

FIRM_API void construct_cf_backedges(ir_graph *irg);

FIRM_API void assure_loopinfo(ir_graph *irg);

FIRM_API void free_loop_information(ir_graph *irg);

FIRM_API int is_loop_invariant(const ir_node *n, const ir_node *block);

#include "end.h"

#endif