| /* Calculate (post)dominators header file. |
| Copyright (C) 2014-2019 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_DOMINANCE_H |
| #define GCC_DOMINANCE_H |
| |
| enum cdi_direction |
| { |
| CDI_DOMINATORS = 1, |
| CDI_POST_DOMINATORS = 2 |
| }; |
| |
| /* State of dominance information. */ |
| |
| enum dom_state |
| { |
| DOM_NONE, /* Not computed at all. */ |
| DOM_NO_FAST_QUERY, /* The data is OK, but the fast query data are not usable. */ |
| DOM_OK /* Everything is ok. */ |
| }; |
| |
| extern void calculate_dominance_info (enum cdi_direction); |
| extern void calculate_dominance_info_for_region (enum cdi_direction, |
| vec<basic_block>); |
| extern void free_dominance_info (function *, enum cdi_direction); |
| extern void free_dominance_info (enum cdi_direction); |
| extern void free_dominance_info_for_region (function *, |
| enum cdi_direction, |
| vec<basic_block>); |
| extern basic_block get_immediate_dominator (enum cdi_direction, basic_block); |
| extern void set_immediate_dominator (enum cdi_direction, basic_block, |
| basic_block); |
| extern vec<basic_block> get_dominated_by (enum cdi_direction, basic_block); |
| extern vec<basic_block> get_dominated_by_region (enum cdi_direction, |
| basic_block *, |
| unsigned); |
| extern vec<basic_block> get_dominated_to_depth (enum cdi_direction, |
| basic_block, int); |
| extern vec<basic_block> get_all_dominated_blocks (enum cdi_direction, |
| basic_block); |
| extern void redirect_immediate_dominators (enum cdi_direction, basic_block, |
| basic_block); |
| extern basic_block nearest_common_dominator (enum cdi_direction, |
| basic_block, basic_block); |
| extern basic_block nearest_common_dominator_for_set (enum cdi_direction, |
| bitmap); |
| extern bool dominated_by_p (enum cdi_direction, const_basic_block, |
| const_basic_block); |
| unsigned bb_dom_dfs_in (enum cdi_direction, basic_block); |
| unsigned bb_dom_dfs_out (enum cdi_direction, basic_block); |
| extern void verify_dominators (enum cdi_direction); |
| |
| /* Verify invariants of computed dominance information, if internal consistency |
| checks are enabled. */ |
| |
| static inline void |
| checking_verify_dominators (cdi_direction dir) |
| { |
| if (flag_checking) |
| verify_dominators (dir); |
| } |
| |
| basic_block recompute_dominator (enum cdi_direction, basic_block); |
| extern void iterate_fix_dominators (enum cdi_direction, |
| vec<basic_block> , bool); |
| extern void add_to_dominance_info (enum cdi_direction, basic_block); |
| extern void delete_from_dominance_info (enum cdi_direction, basic_block); |
| extern basic_block first_dom_son (enum cdi_direction, basic_block); |
| extern basic_block next_dom_son (enum cdi_direction, basic_block); |
| extern enum dom_state dom_info_state (function *, enum cdi_direction); |
| extern enum dom_state dom_info_state (enum cdi_direction); |
| extern void set_dom_info_availability (enum cdi_direction, enum dom_state); |
| extern bool dom_info_available_p (function *, enum cdi_direction); |
| extern bool dom_info_available_p (enum cdi_direction); |
| |
| |
| |
| #endif /* GCC_DOMINANCE_H */ |