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e53b6e56 | 1 | /* Definitions and declarations for stor-layout.cc. |
a945c346 | 2 | Copyright (C) 2013-2024 Free Software Foundation, Inc. |
d8a2d370 DN |
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_STOR_LAYOUT_H | |
21 | #define GCC_STOR_LAYOUT_H | |
22 | ||
807e902e | 23 | extern void set_min_and_max_values_for_integral_type (tree, int, signop); |
d8a2d370 | 24 | extern void fixup_signed_type (tree); |
d8a2d370 DN |
25 | extern unsigned int update_alignment_for_field (record_layout_info, tree, |
26 | unsigned int); | |
27 | extern record_layout_info start_record_layout (tree); | |
28 | extern tree bit_from_pos (tree, tree); | |
29 | extern tree byte_from_pos (tree, tree); | |
30 | extern void pos_from_bit (tree *, tree *, unsigned int, tree); | |
31 | extern void normalize_offset (tree *, tree *, unsigned int); | |
32 | extern tree rli_size_unit_so_far (record_layout_info); | |
33 | extern tree rli_size_so_far (record_layout_info); | |
34 | extern void normalize_rli (record_layout_info); | |
35 | extern void place_field (record_layout_info, tree); | |
36 | extern void compute_record_mode (tree); | |
792adb8d | 37 | extern void compute_array_mode (tree); |
ddc8de03 | 38 | extern void finish_bitfield_layout (tree); |
d8a2d370 | 39 | extern void finish_record_layout (record_layout_info, int); |
d8a2d370 DN |
40 | extern void finalize_size_functions (void); |
41 | extern void fixup_unsigned_type (tree); | |
42 | extern void initialize_sizetypes (void); | |
43 | ||
44 | /* Finish up a builtin RECORD_TYPE. Give it a name and provide its | |
45 | fields. Optionally specify an alignment, and then lay it out. */ | |
46 | extern void finish_builtin_struct (tree, const char *, tree, tree); | |
47 | ||
48 | /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node, | |
49 | calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE | |
50 | fields. Call this only once for any given decl node. | |
51 | ||
52 | Second argument is the boundary that this field can be assumed to | |
53 | be starting at (in bits). Zero means it can be assumed aligned | |
54 | on any boundary that may be needed. */ | |
55 | extern void layout_decl (tree, unsigned); | |
56 | ||
57 | /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT, | |
58 | TYPE_ALIGN and TYPE_MODE fields. If called more than once on one | |
59 | node, does nothing except for the first time. */ | |
60 | extern void layout_type (tree); | |
61 | ||
944fa280 JJ |
62 | /* Return the least alignment in bytes required for type TYPE. */ |
63 | extern unsigned int min_align_of_type (tree); | |
64 | ||
d8a2d370 DN |
65 | /* Construct various nodes representing fract or accum data types. */ |
66 | extern tree make_fract_type (int, int, int); | |
67 | extern tree make_accum_type (int, int, int); | |
68 | ||
69 | #define make_signed_fract_type(P) make_fract_type (P, 0, 0) | |
70 | #define make_unsigned_fract_type(P) make_fract_type (P, 1, 0) | |
71 | #define make_sat_signed_fract_type(P) make_fract_type (P, 0, 1) | |
72 | #define make_sat_unsigned_fract_type(P) make_fract_type (P, 1, 1) | |
73 | #define make_signed_accum_type(P) make_accum_type (P, 0, 0) | |
74 | #define make_unsigned_accum_type(P) make_accum_type (P, 1, 0) | |
75 | #define make_sat_signed_accum_type(P) make_accum_type (P, 0, 1) | |
76 | #define make_sat_unsigned_accum_type(P) make_accum_type (P, 1, 1) | |
77 | ||
78 | #define make_or_reuse_signed_fract_type(P) \ | |
79 | make_or_reuse_fract_type (P, 0, 0) | |
80 | #define make_or_reuse_unsigned_fract_type(P) \ | |
81 | make_or_reuse_fract_type (P, 1, 0) | |
82 | #define make_or_reuse_sat_signed_fract_type(P) \ | |
83 | make_or_reuse_fract_type (P, 0, 1) | |
84 | #define make_or_reuse_sat_unsigned_fract_type(P) \ | |
85 | make_or_reuse_fract_type (P, 1, 1) | |
86 | #define make_or_reuse_signed_accum_type(P) \ | |
87 | make_or_reuse_accum_type (P, 0, 0) | |
88 | #define make_or_reuse_unsigned_accum_type(P) \ | |
89 | make_or_reuse_accum_type (P, 1, 0) | |
90 | #define make_or_reuse_sat_signed_accum_type(P) \ | |
91 | make_or_reuse_accum_type (P, 0, 1) | |
92 | #define make_or_reuse_sat_unsigned_accum_type(P) \ | |
93 | make_or_reuse_accum_type (P, 1, 1) | |
94 | ||
95 | extern tree make_signed_type (int); | |
96 | extern tree make_unsigned_type (int); | |
97 | ||
98 | /* Return the mode for data of a given size SIZE and mode class CLASS. | |
99 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. | |
100 | The value is BLKmode if no other mode is found. This is like | |
101 | mode_for_size, but is passed a tree. */ | |
798014c5 | 102 | extern opt_machine_mode mode_for_size_tree (const_tree, enum mode_class, int); |
d8a2d370 | 103 | |
ef4bddc2 | 104 | extern tree bitwise_type_for_mode (machine_mode); |
dbf23a79 | 105 | |
cc383e97 JJ |
106 | extern opt_machine_mode bitwise_mode_for_size (poly_uint64); |
107 | ||
d8a2d370 DN |
108 | /* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of |
109 | a previous call to layout_decl and calls it again. */ | |
110 | extern void relayout_decl (tree); | |
111 | ||
112 | /* variable_size (EXP) is like save_expr (EXP) except that it | |
113 | is for the special case of something that is part of a | |
114 | variable size for a data type. It makes special arrangements | |
115 | to compute the value at the right time when the data type | |
116 | belongs to a function parameter. */ | |
117 | extern tree variable_size (tree); | |
118 | ||
d8a2d370 | 119 | #endif // GCC_STOR_LAYOUT_H |