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1 | /* Header for Fortran 95 types backend support. | |
2 | Copyright (C) 2002-2024 Free Software Foundation, Inc. | |
3 | Contributed by Paul Brook <paul@nowt.org> | |
4 | and Steven Bosscher <s.bosscher@student.tudelft.nl> | |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GCC; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | ||
23 | #ifndef GFC_BACKEND_H | |
24 | #define GFC_BACKEND_H | |
25 | ||
26 | ||
27 | extern GTY(()) tree gfc_array_index_type; | |
28 | extern GTY(()) tree gfc_array_range_type; | |
29 | extern GTY(()) tree gfc_character1_type_node; | |
30 | extern GTY(()) tree ppvoid_type_node; | |
31 | extern GTY(()) tree pvoid_type_node; | |
32 | extern GTY(()) tree prvoid_type_node; | |
33 | extern GTY(()) tree pchar_type_node; | |
34 | extern GTY(()) tree gfc_float128_type_node; | |
35 | extern GTY(()) tree gfc_complex_float128_type_node; | |
36 | ||
37 | /* logical_type_node is the Fortran LOGICAL type of default kind. In | |
38 | addition to uses mandated by the Fortran standard, also prefer it | |
39 | for compiler generated temporary variables, is it avoids some minor | |
40 | issues with boolean_type_node (the C/C++ _Bool/bool). Namely: | |
41 | - On x86, partial register stalls with 8/16 bit register access, | |
42 | and length prefix changes. | |
43 | - On s390 there is a compare with immediate and jump instruction, | |
44 | but it works only with 32-bit quantities and not 8-bit such as | |
45 | boolean_type_node. | |
46 | */ | |
47 | extern GTY(()) tree logical_type_node; | |
48 | extern GTY(()) tree logical_true_node; | |
49 | extern GTY(()) tree logical_false_node; | |
50 | ||
51 | /* This is the type used to hold the lengths of character variables. | |
52 | It must be the same as the corresponding definition in gfortran.h. */ | |
53 | extern GTY(()) tree gfc_charlen_type_node; | |
54 | ||
55 | ||
56 | /* The following flags give us information on the correspondence of | |
57 | real (and complex) kinds with C floating-point types long double | |
58 | and _Float128. */ | |
59 | extern bool gfc_real16_is_float128; | |
60 | ||
61 | /* True if IEC 60559 *f128 APIs should be used for _Float128 rather than | |
62 | libquadmath *q APIs. */ | |
63 | extern bool gfc_real16_use_iec_60559; | |
64 | ||
65 | enum gfc_packed { | |
66 | PACKED_NO = 0, | |
67 | PACKED_PARTIAL, | |
68 | PACKED_FULL, | |
69 | PACKED_STATIC | |
70 | }; | |
71 | ||
72 | /* trans-types.cc */ | |
73 | void gfc_init_kinds (void); | |
74 | void gfc_init_types (void); | |
75 | void gfc_init_c_interop_kinds (void); | |
76 | ||
77 | tree get_dtype_type_node (void); | |
78 | tree gfc_get_int_type (int); | |
79 | tree gfc_get_real_type (int); | |
80 | tree gfc_get_complex_type (int); | |
81 | tree gfc_get_logical_type (int); | |
82 | tree gfc_get_char_type (int); | |
83 | tree gfc_get_pchar_type (int); | |
84 | tree gfc_get_character_type (int, gfc_charlen *); | |
85 | tree gfc_get_character_type_len (int, tree); | |
86 | tree gfc_get_character_type_len_for_eltype (tree, tree); | |
87 | ||
88 | tree gfc_sym_type (gfc_symbol *, bool is_bind_c_arg = false); | |
89 | tree gfc_get_cfi_type (int dimen, bool restricted); | |
90 | tree gfc_typenode_for_spec (gfc_typespec *, int c = 0); | |
91 | bool gfc_copy_dt_decls_ifequal (gfc_symbol *, gfc_symbol *, bool); | |
92 | ||
93 | tree gfc_get_function_type (gfc_symbol *, gfc_actual_arglist *args = NULL, | |
94 | const char *fnspec = NULL); | |
95 | ||
96 | tree gfc_type_for_size (unsigned, int); | |
97 | tree gfc_type_for_mode (machine_mode, int); | |
98 | tree gfc_build_uint_type (int); | |
99 | ||
100 | tree gfc_get_element_type (tree); | |
101 | tree gfc_get_array_type_bounds (tree, int, int, tree *, tree *, int, | |
102 | enum gfc_array_kind, bool); | |
103 | tree gfc_get_nodesc_array_type (tree, gfc_array_spec *, gfc_packed, bool); | |
104 | ||
105 | /* Add a field of given name and type to a UNION_TYPE or RECORD_TYPE. */ | |
106 | tree gfc_add_field_to_struct (tree, tree, tree, tree **); | |
107 | ||
108 | /* Layout and output debugging info for a type. */ | |
109 | void gfc_finish_type (tree); | |
110 | ||
111 | /* Some functions have an extra parameter for the return value. */ | |
112 | bool gfc_return_by_reference (gfc_symbol *); | |
113 | ||
114 | /* Returns true if the array sym does not require a descriptor. */ | |
115 | bool gfc_is_nodesc_array (gfc_symbol *); | |
116 | ||
117 | /* Return the DTYPE for an array. */ | |
118 | tree gfc_get_dtype_rank_type (int, tree); | |
119 | tree gfc_get_dtype (tree, int *rank = NULL); | |
120 | ||
121 | tree gfc_get_caf_vector_type (int dim); | |
122 | tree gfc_get_caf_reference_type (); | |
123 | ||
124 | #endif |