1 /* Header file for any pass which requires SSA routines.
2 Copyright (C) 2013-2014 Free Software Foundation, Inc.
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
23 /* Mapping for redirected edges. */
24 struct _edge_var_map {
25 tree result; /* PHI result. */
26 tree def; /* PHI arg definition. */
27 source_location locus; /* PHI arg location. */
28 };
29 typedef struct _edge_var_map edge_var_map;
30
31 /* A vector of var maps. */
32 typedef vec<edge_var_map, va_heap, vl_embed> edge_var_map_vector;
33
34
35 extern void redirect_edge_var_map_add (edge, tree, tree, source_location);
36 extern void redirect_edge_var_map_clear (edge);
37 extern void redirect_edge_var_map_dup (edge, edge);
38 extern edge_var_map_vector *redirect_edge_var_map_vector (edge);
39 extern void redirect_edge_var_map_destroy (void);
40 extern edge ssa_redirect_edge (edge, basic_block);
41 extern void flush_pending_stmts (edge);
42 extern void gimple_replace_ssa_lhs (gimple, tree);
43 extern tree target_for_debug_bind (tree);
44 extern void insert_debug_temp_for_var_def (gimple_stmt_iterator *, tree);
45 extern void insert_debug_temps_for_defs (gimple_stmt_iterator *);
46 extern void reset_debug_uses (gimple);
47 extern void release_defs_bitset (bitmap toremove);
48 extern void verify_ssa (bool);
49 extern void init_tree_ssa (struct function *);
50 extern void delete_tree_ssa (void);
51 extern bool tree_ssa_useless_type_conversion (tree);
52 extern tree tree_ssa_strip_useless_type_conversions (tree);
53
54 extern bool ssa_undefined_value_p (tree);
55 extern void execute_update_addresses_taken (void);
56
57 /* Given an edge_var_map V, return the PHI arg definition. */
58
59 static inline tree
redirect_edge_var_map_def(edge_var_map * v)60 redirect_edge_var_map_def (edge_var_map *v)
61 {
62 return v->def;
63 }
64
65 /* Given an edge_var_map V, return the PHI result. */
66
67 static inline tree
redirect_edge_var_map_result(edge_var_map * v)68 redirect_edge_var_map_result (edge_var_map *v)
69 {
70 return v->result;
71 }
72
73 /* Given an edge_var_map V, return the PHI arg location. */
74
75 static inline source_location
redirect_edge_var_map_location(edge_var_map * v)76 redirect_edge_var_map_location (edge_var_map *v)
77 {
78 return v->locus;
79 }
80
81
82 #endif /* GCC_TREE_SSA_H */
83