120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
/* Control flow graph manipulation code header file.
|
|
Copyright (C) 2014-2016 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GCC; see the file COPYING3. If not see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef GCC_CFG_H
|
|
#define GCC_CFG_H
|
|
|
|
#include "dominance.h"
|
|
|
|
/* What sort of profiling information we have. */
|
|
enum profile_status_d
|
|
{
|
|
PROFILE_ABSENT,
|
|
PROFILE_GUESSED,
|
|
PROFILE_READ,
|
|
PROFILE_LAST /* Last value, used by profile streaming. */
|
|
};
|
|
|
|
/* A structure to group all the per-function control flow graph data.
|
|
The x_* prefixing is necessary because otherwise references to the
|
|
fields of this struct are interpreted as the defines for backward
|
|
source compatibility following the definition of this struct. */
|
|
struct GTY(()) control_flow_graph {
|
|
/* Block pointers for the exit and entry of a function.
|
|
These are always the head and tail of the basic block list. */
|
|
basic_block x_entry_block_ptr;
|
|
basic_block x_exit_block_ptr;
|
|
|
|
/* Index by basic block number, get basic block struct info. */
|
|
vec<basic_block, va_gc> *x_basic_block_info;
|
|
|
|
/* Number of basic blocks in this flow graph. */
|
|
int x_n_basic_blocks;
|
|
|
|
/* Number of edges in this flow graph. */
|
|
int x_n_edges;
|
|
|
|
/* The first free basic block number. */
|
|
int x_last_basic_block;
|
|
|
|
/* UIDs for LABEL_DECLs. */
|
|
int last_label_uid;
|
|
|
|
/* Mapping of labels to their associated blocks. At present
|
|
only used for the gimple CFG. */
|
|
vec<basic_block, va_gc> *x_label_to_block_map;
|
|
|
|
enum profile_status_d x_profile_status;
|
|
|
|
/* Whether the dominators and the postdominators are available. */
|
|
enum dom_state x_dom_computed[2];
|
|
|
|
/* Number of basic blocks in the dominance tree. */
|
|
unsigned x_n_bbs_in_dom_tree[2];
|
|
|
|
/* Maximal number of entities in the single jumptable. Used to estimate
|
|
final flowgraph size. */
|
|
int max_jumptable_ents;
|
|
};
|
|
|
|
|
|
extern void init_flow (function *);
|
|
extern void clear_edges (function *);
|
|
extern basic_block alloc_block (void);
|
|
extern void link_block (basic_block, basic_block);
|
|
extern void unlink_block (basic_block);
|
|
extern void compact_blocks (void);
|
|
extern void expunge_block (basic_block);
|
|
extern edge unchecked_make_edge (basic_block, basic_block, int);
|
|
extern edge cached_make_edge (sbitmap, basic_block, basic_block, int);
|
|
extern edge make_edge (basic_block, basic_block, int);
|
|
extern edge make_single_succ_edge (basic_block, basic_block, int);
|
|
extern void remove_edge_raw (edge);
|
|
extern void redirect_edge_succ (edge, basic_block);
|
|
extern void redirect_edge_pred (edge, basic_block);
|
|
extern void clear_bb_flags (void);
|
|
extern void dump_edge_info (FILE *, edge, int, int);
|
|
extern void debug (edge_def &ref);
|
|
extern void debug (edge_def *ptr);
|
|
extern void alloc_aux_for_blocks (int);
|
|
extern void clear_aux_for_blocks (void);
|
|
extern void free_aux_for_blocks (void);
|
|
extern void alloc_aux_for_edge (edge, int);
|
|
extern void alloc_aux_for_edges (int);
|
|
extern void clear_aux_for_edges (void);
|
|
extern void free_aux_for_edges (void);
|
|
extern void debug_bb (basic_block);
|
|
extern basic_block debug_bb_n (int);
|
|
extern void dump_bb_info (FILE *, basic_block, int, int, bool, bool);
|
|
extern void brief_dump_cfg (FILE *, int);
|
|
extern void update_bb_profile_for_threading (basic_block, int, gcov_type, edge);
|
|
extern void scale_bbs_frequencies_int (basic_block *, int, int, int);
|
|
extern void scale_bbs_frequencies_gcov_type (basic_block *, int, gcov_type,
|
|
gcov_type);
|
|
extern void initialize_original_copy_tables (void);
|
|
extern void free_original_copy_tables (void);
|
|
extern void set_bb_original (basic_block, basic_block);
|
|
extern basic_block get_bb_original (basic_block);
|
|
extern void set_bb_copy (basic_block, basic_block);
|
|
extern basic_block get_bb_copy (basic_block);
|
|
void set_loop_copy (struct loop *, struct loop *);
|
|
struct loop *get_loop_copy (struct loop *);
|
|
|
|
#endif /* GCC_CFG_H */
|