ctrump/analyzer/cfg.h

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/* -*- coding:utf-8 -*- 
 Copyright (c) 2009, Fixstars Corporation
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without modification, 
 are permitted provided that the following conditions are met:
 
   * Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
 
   * Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
 
   * Neither the name of Fixstars Corporation nor the names of its contributors
     may be used to endorse or promote products derived from this software
     without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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*/
#ifndef CTRUMP_PARSER_CFG_H
#define CTRUMP_PARSER_CFG_H

#include "ctrump/common/mempool.h"
#include "ctrump/common/bitmap.h"
#include "ctrump/common/intmap.h"
#include "ctrump/analyzer/var.h"
#include "ctrump/ast/location.h"

#ifdef __cplusplus
extern "C" {
#endif

struct ctrump_fundef;
struct ctrump_expr;

struct ctrump_cfg_var_info {
    int index;
    struct ctrump_var *var;
};

struct ctrump_bb {
    int id;                     
    int id_in_cfg;              
#define CTRUMP_BB_LOOP_ENTRY (1<<0)
    int flags;                  
    int num_preds;              
    int num_succs;              
    int num_exprs;              
    int num_dom_children;       
    int num_dfs;                
    int num_phi;                
    struct ctrump_bb **succs;    
    struct ctrump_bb **preds;    
    struct ctrump_expr **exprs;  
    struct ctrump_bb **dom_children;    
    struct ctrump_phi_node *phi_nodes;   
    struct ctrump_bb **dfs;      
    int num_var;                
    ctrump_bitmap_t kill;       
    ctrump_bitmap_t use;        
    ctrump_bitmap_t live;       
    struct ctrump_loop_cfg_info *loop_belong_to; /* どのループに属するか。属さない場合はNULL optional */

    struct ctrump_load_store_set load_store; 
};

#define CTRUMP_BB_IS_LOOP_ENTRY(b) ((b)->flags & CTRUMP_BB_LOOP_ENTRY)

struct ctrump_cfg {
    int id;

    struct ctrump_bb *head;     
    struct ctrump_bb *tail;     
    int num_bb;                 
    int num_var;                
    struct ctrump_bb **basic_blocks; /* vec [num_bb] */
    ctrump_bitmap_t addressed;  
    ctrump_bitmap_t global;  
    struct ctrump_cfg_var_info *var_info; 
    int num_loop;                                   
    struct ctrump_loop_info_node **loop_tree_roots; 
};

enum ctrump_build_cfg_error_code {
    CTRUMP_BUILD_CFG_ERROR_UNDEFINED_LABEL, 
    CTRUMP_BUILD_CFG_ERROR_REDEFINE_LABEL,  
    CTRUMP_BUILD_CFG_ERROR_CONTINUE_IN_NOT_LOOP, 
    CTRUMP_BUILD_CFG_ERROR_BREAK_IN_NOT_LOOP,    
    CTRUMP_BUILD_CFG_ERROR_INVALID_LVALUE,       
    CTRUMP_BUILD_CFG_ERROR_INVALID_ADDRESSOP     
};

struct ctrump_build_cfg_error {
    enum ctrump_build_cfg_error_code code; 
    const struct ctrump_stmt *stmt;        
};


int
ctrump_build_cfg(struct ctrump_cfg *ret,
                 struct ctrump_intmap *var_info_map, /* variable id -> ctrump_cfg_var_info */
                 struct ctrump_build_cfg_error *error,
                 const struct ctrump_fundef *def,
                 struct ctrump_mempool *cfg_pool,
                 struct ctrump_mempool *varmap_pool,
                 int num_ast,
                 int id_begin);

#ifdef __cplusplus
}
#endif

#endif

---