1 /* Data and Control Flow Analysis for Trees. 2 Copyright (C) 2001-2017 Free Software Foundation, Inc. 3 Contributed by Diego Novillo <dnovillo@redhat.com> 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #ifndef _TREE_CFG_H 22 #define _TREE_CFG_H 23 24 /* Location to track pending stmt for edge insertion. */ 25 #define PENDING_STMT(e) ((e)->insns.g) 26 27 /* Garbage collection and PCH support for edge_def. */ 28 extern void gt_ggc_mx (edge_def *e); 29 extern void gt_pch_nx (edge_def *e); 30 extern void gt_pch_nx (edge_def *e, gt_pointer_operator, void *); 31 32 extern void init_empty_tree_cfg_for_function (struct function *); 33 extern void init_empty_tree_cfg (void); 34 extern void start_recording_case_labels (void); 35 extern void end_recording_case_labels (void); 36 extern basic_block label_to_block_fn (struct function *, tree); 37 #define label_to_block(t) (label_to_block_fn (cfun, t)) 38 extern void cleanup_dead_labels (void); 39 extern void group_case_labels_stmt (gswitch *); 40 extern void group_case_labels (void); 41 extern void replace_uses_by (tree, tree); 42 extern basic_block single_noncomplex_succ (basic_block bb); 43 extern void notice_special_calls (gcall *); 44 extern void clear_special_calls (void); 45 extern edge find_taken_edge (basic_block, tree); 46 extern void gimple_debug_bb (basic_block); 47 extern basic_block gimple_debug_bb_n (int); 48 extern void gimple_debug_cfg (int); 49 extern void gimple_dump_cfg (FILE *, int); 50 extern void dump_cfg_stats (FILE *); 51 extern void debug_cfg_stats (void); 52 extern bool computed_goto_p (gimple *); 53 extern bool stmt_can_make_abnormal_goto (gimple *); 54 extern basic_block get_abnormal_succ_dispatcher (basic_block); 55 extern bool is_ctrl_stmt (gimple *); 56 extern bool is_ctrl_altering_stmt (gimple *); 57 extern bool simple_goto_p (gimple *); 58 extern bool stmt_ends_bb_p (gimple *); 59 extern bool assert_unreachable_fallthru_edge_p (edge); 60 extern void delete_tree_cfg_annotations (function *); 61 extern gphi *get_virtual_phi (basic_block); 62 extern gimple *first_stmt (basic_block); 63 extern gimple *last_stmt (basic_block); 64 extern gimple *last_and_only_stmt (basic_block); 65 extern void verify_gimple_in_seq (gimple_seq); 66 extern void verify_gimple_in_cfg (struct function *, bool); 67 extern tree gimple_block_label (basic_block); 68 extern void add_phi_args_after_copy_bb (basic_block); 69 extern void add_phi_args_after_copy (basic_block *, unsigned, edge); 70 extern basic_block split_edge_bb_loc (edge); 71 extern bool gimple_duplicate_sese_region (edge, edge, basic_block *, unsigned, 72 basic_block *, bool); 73 extern bool gimple_duplicate_sese_tail (edge, edge, basic_block *, unsigned, 74 basic_block *); 75 extern void gather_blocks_in_sese_region (basic_block entry, basic_block exit, 76 vec<basic_block> *bbs_p); 77 extern void verify_sese (basic_block, basic_block, vec<basic_block> *); 78 extern bool gather_ssa_name_hash_map_from (tree const &, tree const &, void *); 79 extern basic_block move_sese_region_to_fn (struct function *, basic_block, 80 basic_block, tree); 81 extern void dump_function_to_file (tree, FILE *, int); 82 extern void debug_function (tree, int) ; 83 extern void print_loops_bb (FILE *, basic_block, int, int); 84 extern void print_loops (FILE *, int); 85 extern void debug (struct loop &ref); 86 extern void debug (struct loop *ptr); 87 extern void debug_verbose (struct loop &ref); 88 extern void debug_verbose (struct loop *ptr); 89 extern void debug_loops (int); 90 extern void debug_loop (struct loop *, int); 91 extern void debug_loop_num (unsigned, int); 92 extern void remove_edge_and_dominated_blocks (edge); 93 extern bool gimple_purge_dead_eh_edges (basic_block); 94 extern bool gimple_purge_all_dead_eh_edges (const_bitmap); 95 extern bool gimple_purge_dead_abnormal_call_edges (basic_block); 96 extern bool gimple_purge_all_dead_abnormal_call_edges (const_bitmap); 97 extern tree gimplify_build3 (gimple_stmt_iterator *, enum tree_code, 98 tree, tree, tree, tree); 99 extern tree gimplify_build2 (gimple_stmt_iterator *, enum tree_code, 100 tree, tree, tree); 101 extern tree gimplify_build1 (gimple_stmt_iterator *, enum tree_code, 102 tree, tree); 103 extern void extract_true_false_edges_from_block (basic_block, edge *, edge *); 104 extern unsigned int execute_fixup_cfg (void); 105 extern unsigned int split_critical_edges (void); 106 extern basic_block insert_cond_bb (basic_block, gimple *, gimple *); 107 extern bool gimple_find_sub_bbs (gimple_seq, gimple_stmt_iterator *); 108 extern bool extract_true_false_controlled_edges (basic_block, basic_block, 109 edge *, edge *); 110 111 /* Return true if the LHS of a call should be removed. */ 112 113 inline bool 114 should_remove_lhs_p (tree lhs) 115 { 116 return (lhs 117 && TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (lhs))) == INTEGER_CST 118 && !TREE_ADDRESSABLE (TREE_TYPE (lhs))); 119 } 120 121 #endif /* _TREE_CFG_H */ 122