1 | /* Header for Fortran 95 types backend support. |
2 | Copyright (C) 2002-2023 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 |
125 | |