| /* Control flow graph analysis header file. |
| Copyright (C) 2014-2018 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_CFGANAL_H |
| #define GCC_CFGANAL_H |
| |
| /* This structure maintains an edge list vector. */ |
| /* FIXME: Make this a vec<edge>. */ |
| struct edge_list |
| { |
| int num_edges; |
| edge *index_to_edge; |
| }; |
| |
| |
| /* Class to compute and manage control dependences on an edge-list. */ |
| class control_dependences |
| { |
| public: |
| control_dependences (); |
| ~control_dependences (); |
| bitmap get_edges_dependent_on (int); |
| basic_block get_edge_src (int); |
| basic_block get_edge_dest (int); |
| |
| private: |
| void set_control_dependence_map_bit (basic_block, int); |
| void clear_control_dependence_bitmap (basic_block); |
| void find_control_dependence (int); |
| vec<bitmap> control_dependence_map; |
| vec<std::pair<int, int> > m_el; |
| }; |
| |
| extern bool mark_dfs_back_edges (void); |
| extern void find_unreachable_blocks (void); |
| extern void verify_no_unreachable_blocks (void); |
| struct edge_list * create_edge_list (void); |
| void free_edge_list (struct edge_list *); |
| void print_edge_list (FILE *, struct edge_list *); |
| void verify_edge_list (FILE *, struct edge_list *); |
| edge find_edge (basic_block, basic_block); |
| int find_edge_index (struct edge_list *, basic_block, basic_block); |
| extern void remove_fake_edges (void); |
| extern void remove_fake_exit_edges (void); |
| extern void add_noreturn_fake_exit_edges (void); |
| extern void connect_infinite_loops_to_exit (void); |
| extern int post_order_compute (int *, bool, bool); |
| extern basic_block dfs_find_deadend (basic_block); |
| extern void inverted_post_order_compute (vec<int> *postorder, sbitmap *start_points = 0); |
| extern int pre_and_rev_post_order_compute_fn (struct function *, |
| int *, int *, bool); |
| extern int pre_and_rev_post_order_compute (int *, int *, bool); |
| extern int dfs_enumerate_from (basic_block, int, |
| bool (*)(const_basic_block, const void *), |
| basic_block *, int, const void *); |
| extern void compute_dominance_frontiers (struct bitmap_head *); |
| extern bitmap compute_idf (bitmap, struct bitmap_head *); |
| extern void bitmap_intersection_of_succs (sbitmap, sbitmap *, basic_block); |
| extern void bitmap_intersection_of_preds (sbitmap, sbitmap *, basic_block); |
| extern void bitmap_union_of_succs (sbitmap, sbitmap *, basic_block); |
| extern void bitmap_union_of_preds (sbitmap, sbitmap *, basic_block); |
| extern basic_block * single_pred_before_succ_order (void); |
| extern edge single_incoming_edge_ignoring_loop_edges (basic_block, bool); |
| extern edge single_pred_edge_ignoring_loop_edges (basic_block, bool); |
| |
| |
| #endif /* GCC_CFGANAL_H */ |