gcc/tree-cfg.h

   1 /* Data and Control Flow Analysis for Trees.
   2    Copyright (C) 2001-2020 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 (struct function *, tree);
  37 extern void cleanup_dead_labels (void);
  38 extern bool group_case_labels_stmt (gswitch *);
  39 extern bool group_case_labels (void);
  40 extern void replace_uses_by (tree, tree);
  41 extern basic_block single_noncomplex_succ (basic_block bb);
  42 extern void notice_special_calls (gcall *);
  43 extern void clear_special_calls (void);
  44 extern edge find_taken_edge (basic_block, tree);
  45 extern void gimple_debug_bb (basic_block);
  46 extern basic_block gimple_debug_bb_n (int);
  47 extern void gimple_debug_cfg (int);
  48 extern void gimple_dump_cfg (FILE *, dump_flags_t);
  49 extern void dump_cfg_stats (FILE *);
  50 extern void debug_cfg_stats (void);
  51 extern bool computed_goto_p (gimple *);
  52 extern bool stmt_can_make_abnormal_goto (gimple *);
  53 extern basic_block get_abnormal_succ_dispatcher (basic_block);
  54 extern bool is_ctrl_stmt (gimple *);
  55 extern bool is_ctrl_altering_stmt (gimple *);
  56 extern bool simple_goto_p (gimple *);
  57 extern bool stmt_ends_bb_p (gimple *);
  58 extern bool gimple_seq_unreachable_p (gimple_seq);
  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 void fold_loop_internal_call (gimple *, tree);
  80 extern basic_block move_sese_region_to_fn (struct function *, basic_block,
  81                                            basic_block, tree);
  82 extern void dump_function_to_file (tree, FILE *, dump_flags_t);
  83 extern void debug_function (tree, dump_flags_t);
  84 extern void print_loops_bb (FILE *, basic_block, int, int);
  85 extern void print_loops (FILE *, int);
  86 extern void debug (class loop &ref);
  87 extern void debug (class loop *ptr);
  88 extern void debug_verbose (class loop &ref);
  89 extern void debug_verbose (class loop *ptr);
  90 extern void debug_loops (int);
  91 extern void debug_loop (class loop *, int);
  92 extern void debug_loop_num (unsigned, int);
  93 extern void remove_edge_and_dominated_blocks (edge);
  94 extern bool gimple_purge_dead_eh_edges (basic_block);
  95 extern bool gimple_purge_all_dead_eh_edges (const_bitmap);
  96 extern bool gimple_purge_dead_abnormal_call_edges (basic_block);
  97 extern bool gimple_purge_all_dead_abnormal_call_edges (const_bitmap);
  98 extern tree gimplify_build3 (gimple_stmt_iterator *, enum tree_code,
  99                              tree, tree, tree, tree);
 100 extern tree gimplify_build2 (gimple_stmt_iterator *, enum tree_code,
 101                              tree, tree, tree);
 102 extern tree gimplify_build1 (gimple_stmt_iterator *, enum tree_code,
 103                              tree, tree);
 104 extern void extract_true_false_edges_from_block (basic_block, edge *, edge *);
 105 extern tree find_case_label_for_value (const gswitch *switch_stmt, tree val);
 106 extern edge find_taken_edge_switch_expr (const gswitch *switch_stmt, tree val);
 107 extern unsigned int execute_fixup_cfg (void);
 108 extern unsigned int split_critical_edges (bool for_edge_insertion_p = false);
 109 extern basic_block insert_cond_bb (basic_block, gimple *, gimple *,
 110                                    profile_probability);
 111 extern bool gimple_find_sub_bbs (gimple_seq, gimple_stmt_iterator *);
 112 extern bool extract_true_false_controlled_edges (basic_block, basic_block,
 113                                                  edge *, edge *);
 114 extern void generate_range_test (basic_block bb, tree index, tree low,
 115                                  tree high, tree *lhs, tree *rhs);
 116 extern basic_block gimple_switch_label_bb (function *, gswitch *, unsigned);
 117 extern basic_block gimple_switch_default_bb (function *, gswitch *);
 118 extern edge gimple_switch_edge (function *, gswitch *, unsigned);
 119 extern edge gimple_switch_default_edge (function *, gswitch *);
 120
 121 /* Return true if the LHS of a call should be removed.  */
 122
 123 inline bool
 124 should_remove_lhs_p (tree lhs)
 125 {
 126   return (lhs
 127           && TREE_CODE (TYPE_SIZE_UNIT (TREE_TYPE (lhs))) == INTEGER_CST
 128           && !TREE_ADDRESSABLE (TREE_TYPE (lhs)));
 129 }
 130
 131
 132 inline unsigned int
 133 split_edges_for_insertion ()
 134 {
 135   return split_critical_edges (/*for_edge_insertion_p=*/true);
 136 }
 137
 138 #endif /* _TREE_CFG_H  */