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b12ebd96 | 1 | /* SSA name expresssons routines |
818ab71a | 2 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
b12ebd96 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_SSANAMES_H | |
21 | #define GCC_TREE_SSANAMES_H | |
22 | ||
23 | /* Aliasing information for SSA_NAMEs representing pointer variables. */ | |
24 | ||
25 | struct GTY(()) ptr_info_def | |
26 | { | |
27 | /* The points-to solution. */ | |
28 | struct pt_solution pt; | |
29 | ||
30 | /* Alignment and misalignment of the pointer in bytes. Together | |
31 | align and misalign specify low known bits of the pointer. | |
32 | ptr & (align - 1) == misalign. */ | |
33 | ||
34 | /* When known, this is the power-of-two byte alignment of the object this | |
35 | pointer points into. This is usually DECL_ALIGN_UNIT for decls and | |
36 | MALLOC_ABI_ALIGNMENT for allocated storage. When the alignment is not | |
37 | known, it is zero. Do not access directly but use functions | |
38 | get_ptr_info_alignment, set_ptr_info_alignment, | |
39 | mark_ptr_info_alignment_unknown and similar. */ | |
40 | unsigned int align; | |
41 | ||
42 | /* When alignment is known, the byte offset this pointer differs from the | |
43 | above alignment. Access only through the same helper functions as align | |
44 | above. */ | |
45 | unsigned int misalign; | |
46 | }; | |
47 | ||
a895a2b8 KV |
48 | /* Value range information for SSA_NAMEs representing non-pointer variables. */ |
49 | ||
807e902e KZ |
50 | struct GTY ((variable_size)) range_info_def { |
51 | /* Minimum, maximum and nonzero bits. */ | |
52 | TRAILING_WIDE_INT_ACCESSOR (min, ints, 0) | |
53 | TRAILING_WIDE_INT_ACCESSOR (max, ints, 1) | |
54 | TRAILING_WIDE_INT_ACCESSOR (nonzero_bits, ints, 2) | |
55 | trailing_wide_ints <3> ints; | |
a895a2b8 KV |
56 | }; |
57 | ||
b12ebd96 AM |
58 | |
59 | #define SSANAMES(fun) (fun)->gimple_df->ssa_names | |
b12ebd96 AM |
60 | #define DEFAULT_DEFS(fun) (fun)->gimple_df->default_defs |
61 | ||
62 | #define num_ssa_names (vec_safe_length (cfun->gimple_df->ssa_names)) | |
63 | #define ssa_name(i) ((*cfun->gimple_df->ssa_names)[(i)]) | |
64 | ||
46aa019a KV |
65 | #define FOR_EACH_SSA_NAME(I, VAR, FN) \ |
66 | for (I = 1; SSANAMES (FN)->iterate (I, &VAR); ++I) \ | |
67 | if (VAR) | |
68 | ||
a895a2b8 | 69 | /* Sets the value range to SSA. */ |
807e902e KZ |
70 | extern void set_range_info (tree, enum value_range_type, const wide_int_ref &, |
71 | const wide_int_ref &); | |
a895a2b8 | 72 | /* Gets the value range from SSA. */ |
807e902e KZ |
73 | extern enum value_range_type get_range_info (const_tree, wide_int *, |
74 | wide_int *); | |
75 | extern void set_nonzero_bits (tree, const wide_int_ref &); | |
76 | extern wide_int get_nonzero_bits (const_tree); | |
40c43aca | 77 | extern bool ssa_name_has_boolean_range (tree); |
b12ebd96 | 78 | extern void init_ssanames (struct function *, int); |
61183076 | 79 | extern void fini_ssanames (struct function *); |
b12ebd96 | 80 | extern void ssanames_print_statistics (void); |
355fe088 | 81 | extern tree make_ssa_name_fn (struct function *, tree, gimple *); |
6a58ccca | 82 | extern void release_ssa_name_fn (struct function *, tree); |
b12ebd96 AM |
83 | extern bool get_ptr_info_alignment (struct ptr_info_def *, unsigned int *, |
84 | unsigned int *); | |
85 | extern void mark_ptr_info_alignment_unknown (struct ptr_info_def *); | |
86 | extern void set_ptr_info_alignment (struct ptr_info_def *, unsigned int, | |
87 | unsigned int); | |
88 | extern void adjust_ptr_info_misalignment (struct ptr_info_def *, | |
89 | unsigned int); | |
90 | extern struct ptr_info_def *get_ptr_info (tree); | |
735b8f9f KV |
91 | extern void set_ptr_nonnull (tree); |
92 | extern bool get_ptr_nonnull (const_tree); | |
b12ebd96 | 93 | |
355fe088 | 94 | extern tree copy_ssa_name_fn (struct function *, tree, gimple *); |
b12ebd96 | 95 | extern void duplicate_ssa_name_ptr_info (tree, struct ptr_info_def *); |
355fe088 | 96 | extern tree duplicate_ssa_name_fn (struct function *, tree, gimple *); |
f5c8b24c RS |
97 | extern void duplicate_ssa_name_range_info (tree, enum value_range_type, |
98 | struct range_info_def *); | |
8bb8e838 | 99 | extern void reset_flow_sensitive_info (tree); |
6ea2f74c | 100 | extern void reset_flow_sensitive_info_in_bb (basic_block); |
355fe088 | 101 | extern void release_defs (gimple *); |
b12ebd96 | 102 | extern void replace_ssa_name_symbol (tree, tree); |
dc0ccbb3 | 103 | extern void flush_ssaname_freelist (void); |
b12ebd96 AM |
104 | |
105 | ||
106 | /* Return an SSA_NAME node for variable VAR defined in statement STMT | |
107 | in function cfun. */ | |
108 | ||
109 | static inline tree | |
355fe088 | 110 | make_ssa_name (tree var, gimple *stmt = NULL) |
b12ebd96 AM |
111 | { |
112 | return make_ssa_name_fn (cfun, var, stmt); | |
113 | } | |
114 | ||
115 | /* Return an SSA_NAME node using the template SSA name NAME defined in | |
116 | statement STMT in function cfun. */ | |
117 | ||
118 | static inline tree | |
355fe088 | 119 | copy_ssa_name (tree var, gimple *stmt = NULL) |
b12ebd96 AM |
120 | { |
121 | return copy_ssa_name_fn (cfun, var, stmt); | |
122 | } | |
123 | ||
124 | /* Creates a duplicate of a SSA name NAME tobe defined by statement STMT | |
125 | in function cfun. */ | |
126 | ||
127 | static inline tree | |
355fe088 | 128 | duplicate_ssa_name (tree var, gimple *stmt) |
b12ebd96 AM |
129 | { |
130 | return duplicate_ssa_name_fn (cfun, var, stmt); | |
131 | } | |
132 | ||
6a58ccca RB |
133 | /* Release the SSA name NAME used in function cfun. */ |
134 | ||
135 | static inline void | |
136 | release_ssa_name (tree name) | |
137 | { | |
138 | release_ssa_name_fn (cfun, name); | |
139 | } | |
140 | ||
b12ebd96 AM |
141 | /* Return an anonymous SSA_NAME node for type TYPE defined in statement STMT |
142 | in function cfun. Arrange so that it uses NAME in dumps. */ | |
143 | ||
144 | static inline tree | |
355fe088 | 145 | make_temp_ssa_name (tree type, gimple *stmt, const char *name) |
b12ebd96 AM |
146 | { |
147 | tree ssa_name; | |
148 | gcc_checking_assert (TYPE_P (type)); | |
149 | ssa_name = make_ssa_name_fn (cfun, type, stmt); | |
150 | SET_SSA_NAME_VAR_OR_IDENTIFIER (ssa_name, get_identifier (name)); | |
151 | return ssa_name; | |
152 | } | |
153 | ||
154 | ||
155 | #endif /* GCC_TREE_SSANAMES_H */ |