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7a300452 | 1 | /* Header file for any pass which requires SSA routines. |
aeee4812 | 2 | Copyright (C) 2013-2023 Free Software Foundation, Inc. |
7a300452 AM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef GCC_TREE_SSA_H | |
21 | #define GCC_TREE_SSA_H | |
22 | ||
7a300452 | 23 | /* Mapping for redirected edges. */ |
a79683d5 | 24 | struct edge_var_map { |
7a300452 AM |
25 | tree result; /* PHI result. */ |
26 | tree def; /* PHI arg definition. */ | |
620e594b | 27 | location_t locus; /* PHI arg location. */ |
7a300452 | 28 | }; |
7a300452 AM |
29 | |
30 | /* A vector of var maps. */ | |
31 | typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector; | |
32 | ||
33 | ||
620e594b | 34 | extern void redirect_edge_var_map_add (edge, tree, tree, location_t); |
7a300452 AM |
35 | extern void redirect_edge_var_map_clear (edge); |
36 | extern void redirect_edge_var_map_dup (edge, edge); | |
b787e7a2 | 37 | extern vec<edge_var_map> *redirect_edge_var_map_vector (edge); |
b3e46655 | 38 | extern void redirect_edge_var_map_empty (void); |
7a300452 AM |
39 | extern edge ssa_redirect_edge (edge, basic_block); |
40 | extern void flush_pending_stmts (edge); | |
355fe088 | 41 | extern void gimple_replace_ssa_lhs (gimple *, tree); |
7a300452 AM |
42 | extern tree target_for_debug_bind (tree); |
43 | extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree); | |
44 | extern void insert_debug_temps_for_defs (gimple_stmt_iterator *); | |
355fe088 | 45 | extern void reset_debug_uses (gimple *); |
7a300452 | 46 | extern void release_defs_bitset (bitmap toremove); |
e9ff9caf | 47 | extern void verify_ssa (bool, bool); |
54af3008 | 48 | extern void init_tree_ssa (function *, int size = 0); |
61183076 | 49 | extern void delete_tree_ssa (function *); |
7a300452 AM |
50 | extern bool tree_ssa_useless_type_conversion (tree); |
51 | extern tree tree_ssa_strip_useless_type_conversions (tree); | |
0a1a3afb | 52 | extern tree find_released_ssa_name (tree *, int *, void *); |
7a300452 | 53 | |
c6b0d21d ML |
54 | |
55 | extern bool ssa_defined_default_def_p (tree t); | |
956623c1 | 56 | extern bool ssa_undefined_value_p (tree, bool = true); |
44c8402d RB |
57 | |
58 | ||
59 | bool ssa_name_any_use_dominates_bb_p (tree var, basic_block bb); | |
60 | extern void mark_ssa_maybe_undefs (void); | |
61 | ||
62 | /* Return TRUE iff VAR is marked as maybe-undefined. See | |
63 | mark_ssa_maybe_undefs. */ | |
64 | ||
cb3e0eac | 65 | inline bool |
44c8402d RB |
66 | ssa_name_maybe_undef_p (tree var) |
67 | { | |
68 | gcc_checking_assert (TREE_CODE (var) == SSA_NAME); | |
69 | return TREE_VISITED (var); | |
70 | } | |
71 | ||
72 | /* Set (or clear, depending on VALUE) VAR's maybe-undefined mark. */ | |
73 | ||
cb3e0eac | 74 | inline void |
44c8402d RB |
75 | ssa_name_set_maybe_undef (tree var, bool value = true) |
76 | { | |
77 | gcc_checking_assert (TREE_CODE (var) == SSA_NAME); | |
78 | TREE_VISITED (var) = value; | |
79 | } | |
80 | ||
81 | ||
7a300452 AM |
82 | extern void execute_update_addresses_taken (void); |
83 | ||
84 | /* Given an edge_var_map V, return the PHI arg definition. */ | |
85 | ||
cb3e0eac | 86 | inline tree |
7a300452 AM |
87 | redirect_edge_var_map_def (edge_var_map *v) |
88 | { | |
89 | return v->def; | |
90 | } | |
91 | ||
92 | /* Given an edge_var_map V, return the PHI result. */ | |
93 | ||
cb3e0eac | 94 | inline tree |
7a300452 AM |
95 | redirect_edge_var_map_result (edge_var_map *v) |
96 | { | |
97 | return v->result; | |
98 | } | |
99 | ||
100 | /* Given an edge_var_map V, return the PHI arg location. */ | |
101 | ||
cb3e0eac | 102 | inline location_t |
7a300452 AM |
103 | redirect_edge_var_map_location (edge_var_map *v) |
104 | { | |
105 | return v->locus; | |
106 | } | |
107 | ||
b2b29377 MM |
108 | /* Verify SSA invariants, if internal consistency checks are enabled. */ |
109 | ||
cb3e0eac | 110 | inline void |
b2b29377 MM |
111 | checking_verify_ssa (bool check_modified_stmt, bool check_ssa_operands) |
112 | { | |
113 | if (flag_checking) | |
114 | verify_ssa (check_modified_stmt, check_ssa_operands); | |
115 | } | |
7a300452 AM |
116 | |
117 | #endif /* GCC_TREE_SSA_H */ |