1 | /* Definitions for c-common.cc. |
---|---|
2 | Copyright (C) 1987-2025 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_C_COMMON_H |
21 | #define GCC_C_COMMON_H |
22 | |
23 | #include "splay-tree.h" |
24 | #include "cpplib.h" |
25 | #include "alias.h" |
26 | #include "tree.h" |
27 | #include "fold-const.h" |
28 | #include "wide-int-bitmask.h" |
29 | |
30 | /* In order for the format checking to accept the C frontend |
31 | diagnostic framework extensions, you must include this file before |
32 | diagnostic-core.h, not after. The C front end formats are a subset of those |
33 | for C++, so they are the appropriate set to use in common code; |
34 | cp-tree.h overrides this for C++. */ |
35 | #if defined(GCC_DIAGNOSTIC_CORE_H) |
36 | #error \ |
37 | In order for the format checking to accept the C front end diagnostic \ |
38 | framework extensions, you must include this file before diagnostic-core.h \ |
39 | never after. |
40 | #endif |
41 | #ifndef GCC_DIAG_STYLE |
42 | #define GCC_DIAG_STYLE __gcc_cdiag__ |
43 | #endif |
44 | #include "diagnostic-core.h" |
45 | |
46 | /* Usage of TREE_LANG_FLAG_?: |
47 | 0: IDENTIFIER_MARKED (used by search routines). |
48 | C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) |
49 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
50 | STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) |
51 | C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) |
52 | 2: unused |
53 | 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) |
54 | 4: unused |
55 | */ |
56 | |
57 | /* Reserved identifiers. This is the union of all the keywords for C, |
58 | C++, and Objective-C. All the type modifiers have to be in one |
59 | block at the beginning, because they are used as mask bits. There |
60 | are 28 type modifiers; if we add many more we will have to redesign |
61 | the mask mechanism. */ |
62 | |
63 | enum rid |
64 | { |
65 | /* Modifiers: */ |
66 | /* C, in empirical order of frequency. */ |
67 | RID_STATIC = 0, |
68 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, |
69 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, |
70 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, |
71 | RID_NORETURN, RID_ATOMIC, |
72 | |
73 | /* C extensions */ |
74 | RID_COMPLEX, RID_THREAD, RID_SAT, |
75 | |
76 | /* C++ */ |
77 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, |
78 | |
79 | /* ObjC ("PQ" reserved words - they do not appear after a '@' and |
80 | are keywords only in specific contexts) */ |
81 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
82 | |
83 | /* ObjC ("PATTR" reserved words - they do not appear after a '@' |
84 | and are keywords only as property attributes) */ |
85 | RID_GETTER, RID_SETTER, |
86 | RID_READONLY, RID_READWRITE, |
87 | RID_ASSIGN, RID_RETAIN, RID_COPY, |
88 | RID_PROPATOMIC, RID_NONATOMIC, |
89 | |
90 | /* ObjC nullability support keywords that also can appear in the |
91 | property attribute context. These values should remain contiguous |
92 | with the other property attributes. */ |
93 | RID_NULL_UNSPECIFIED, RID_NULLABLE, RID_NONNULL, RID_NULL_RESETTABLE, |
94 | |
95 | /* C (reserved and imaginary types not implemented, so any use is a |
96 | syntax error) */ |
97 | RID_IMAGINARY, |
98 | |
99 | /* C */ |
100 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, |
101 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, |
102 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, |
103 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, |
104 | RID_SIZEOF, RID_BITINT, |
105 | |
106 | /* C extensions */ |
107 | RID_ASM, RID_TYPEOF, RID_TYPEOF_UNQUAL, RID_ALIGNOF, RID_ATTRIBUTE, |
108 | RID_COUNTOF, |
109 | RID_C23_VA_START, RID_VA_ARG, |
110 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, |
111 | RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, |
112 | RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH, |
113 | RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER, RID_BUILTIN_STDC, |
114 | RID_BUILTIN_COUNTED_BY_REF, |
115 | RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, RID_DFLOAT64X, |
116 | |
117 | /* TS 18661-3 keywords, in the same sequence as the TI_* values. */ |
118 | RID_FLOAT16, |
119 | RID_FLOATN_NX_FIRST = RID_FLOAT16, |
120 | RID_FLOAT32, |
121 | RID_FLOAT64, |
122 | RID_FLOAT128, |
123 | RID_FLOAT32X, |
124 | RID_FLOAT64X, |
125 | RID_FLOAT128X, |
126 | #define CASE_RID_FLOATN_NX \ |
127 | case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \ |
128 | case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X |
129 | |
130 | RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN, |
131 | |
132 | /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */ |
133 | RID_GIMPLE, |
134 | |
135 | /* "__PHI", for parsing PHI function in GIMPLE FE. */ |
136 | RID_PHI, |
137 | |
138 | /* "__RTL", for the RTL-parsing extension to the C frontend. */ |
139 | RID_RTL, |
140 | |
141 | /* C11 */ |
142 | RID_ALIGNAS, RID_GENERIC, |
143 | |
144 | /* This means to warn that this is a C++ keyword, and then treat it |
145 | as a normal identifier. */ |
146 | RID_CXX_COMPAT_WARN, |
147 | |
148 | /* GNU transactional memory extension */ |
149 | RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, |
150 | |
151 | /* Too many ways of getting the name of a function as a string */ |
152 | RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, |
153 | |
154 | /* C++ (some of these are keywords in Objective-C as well, but only |
155 | if they appear after a '@') */ |
156 | RID_BOOL, RID_WCHAR, RID_CLASS, |
157 | RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, |
158 | RID_TEMPLATE, RID_NULL, RID_CATCH, |
159 | RID_DELETE, RID_FALSE, RID_NAMESPACE, |
160 | RID_NEW, RID_OFFSETOF, RID_OPERATOR, |
161 | RID_THIS, RID_THROW, RID_TRUE, |
162 | RID_TRY, RID_TYPENAME, RID_TYPEID, |
163 | RID_USING, RID_CHAR16, RID_CHAR32, |
164 | |
165 | /* casts */ |
166 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, |
167 | |
168 | /* C++ extensions */ |
169 | RID_ADDRESSOF, |
170 | RID_BUILTIN_LAUNDER, |
171 | RID_BUILTIN_BIT_CAST, |
172 | RID_BUILTIN_OPERATOR_NEW, RID_BUILTIN_OPERATOR_DELETE, |
173 | |
174 | /* C++11 */ |
175 | RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, |
176 | |
177 | /* C++20 */ |
178 | RID_CONSTINIT, RID_CONSTEVAL, |
179 | |
180 | /* char8_t */ |
181 | RID_CHAR8, |
182 | |
183 | /* C++ concepts */ |
184 | RID_CONCEPT, RID_REQUIRES, |
185 | |
186 | /* C++ modules. */ |
187 | RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */ |
188 | |
189 | /* C++ coroutines */ |
190 | RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN, |
191 | |
192 | /* C++ transactional memory. */ |
193 | RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED, |
194 | |
195 | /* Objective-C ("AT" reserved words - they are only keywords when |
196 | they follow '@') */ |
197 | RID_AT_ENCODE, RID_AT_END, |
198 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, |
199 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, |
200 | RID_AT_PROTOCOL, RID_AT_SELECTOR, |
201 | RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, |
202 | RID_AT_FINALLY, RID_AT_SYNCHRONIZED, |
203 | RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, |
204 | RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, |
205 | RID_AT_INTERFACE, |
206 | RID_AT_IMPLEMENTATION, |
207 | |
208 | /* OpenMP */ |
209 | RID_OMP_ALL_MEMORY, |
210 | |
211 | /* Named address support, mapping the keyword to a particular named address |
212 | number. Named address space 0 is reserved for the generic address. If |
213 | there are more than 254 named addresses, the addr_space_t type will need |
214 | to be grown from an unsigned char to unsigned short. */ |
215 | RID_ADDR_SPACE_0, /* generic address */ |
216 | RID_ADDR_SPACE_1, |
217 | RID_ADDR_SPACE_2, |
218 | RID_ADDR_SPACE_3, |
219 | RID_ADDR_SPACE_4, |
220 | RID_ADDR_SPACE_5, |
221 | RID_ADDR_SPACE_6, |
222 | RID_ADDR_SPACE_7, |
223 | RID_ADDR_SPACE_8, |
224 | RID_ADDR_SPACE_9, |
225 | RID_ADDR_SPACE_10, |
226 | RID_ADDR_SPACE_11, |
227 | RID_ADDR_SPACE_12, |
228 | RID_ADDR_SPACE_13, |
229 | RID_ADDR_SPACE_14, |
230 | RID_ADDR_SPACE_15, |
231 | |
232 | RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, |
233 | RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, |
234 | |
235 | /* __intN keywords. The _N_M here doesn't correspond to the intN |
236 | in the keyword; use the bitsize in int_n_t_data_t[M] for that. |
237 | For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0 |
238 | is for __int13. */ |
239 | |
240 | /* Note that the range to use is RID_FIRST_INT_N through |
241 | RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of |
242 | all RID_INT_N_* in a case statement. */ |
243 | |
244 | RID_INT_N_0, |
245 | RID_INT_N_1, |
246 | RID_INT_N_2, |
247 | RID_INT_N_3, |
248 | |
249 | RID_FIRST_INT_N = RID_INT_N_0, |
250 | RID_LAST_INT_N = RID_INT_N_3, |
251 | |
252 | RID_MAX, |
253 | |
254 | RID_FIRST_MODIFIER = RID_STATIC, |
255 | RID_LAST_MODIFIER = RID_ONEWAY, |
256 | |
257 | RID_FIRST_CXX11 = RID_CONSTEXPR, |
258 | RID_LAST_CXX11 = RID_STATIC_ASSERT, |
259 | RID_FIRST_CXX20 = RID_CONSTINIT, |
260 | RID_LAST_CXX20 = RID_CO_RETURN, |
261 | RID_FIRST_AT = RID_AT_ENCODE, |
262 | RID_LAST_AT = RID_AT_IMPLEMENTATION, |
263 | RID_FIRST_PQ = RID_IN, |
264 | RID_LAST_PQ = RID_ONEWAY, |
265 | RID_FIRST_PATTR = RID_GETTER, |
266 | RID_LAST_PATTR = RID_NULL_RESETTABLE |
267 | }; |
268 | |
269 | #define OBJC_IS_AT_KEYWORD(rid) \ |
270 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ |
271 | (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) |
272 | |
273 | #define OBJC_IS_PQ_KEYWORD(rid) \ |
274 | ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ |
275 | (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) |
276 | |
277 | /* Keywords permitted in an @property attribute context. */ |
278 | #define OBJC_IS_PATTR_KEYWORD(rid) \ |
279 | ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ |
280 | (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \ |
281 | || rid == RID_CLASS) |
282 | |
283 | /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as |
284 | 'class') which are shared in a subtle way between Objective-C and |
285 | C++. When the lexer is lexing in Objective-C/Objective-C++, if it |
286 | finds '@' followed by one of these identifiers (eg, '@class'), it |
287 | recognizes the whole as an Objective-C keyword. If the identifier |
288 | is found elsewhere, it follows the rules of the C/C++ language. |
289 | */ |
290 | #define OBJC_IS_CXX_KEYWORD(rid) \ |
291 | (rid == RID_CLASS || rid == RID_SYNCHRONIZED \ |
292 | || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ |
293 | || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) |
294 | |
295 | /* The elements of `ridpointers' are identifier nodes for the reserved |
296 | type names and storage classes. It is indexed by a RID_... value. */ |
297 | extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; |
298 | |
299 | /* Standard named or nameless data types of the C compiler. */ |
300 | |
301 | enum c_tree_index |
302 | { |
303 | CTI_CHAR8_TYPE, |
304 | CTI_CHAR16_TYPE, |
305 | CTI_CHAR32_TYPE, |
306 | CTI_WCHAR_TYPE, |
307 | CTI_UNDERLYING_WCHAR_TYPE, |
308 | CTI_WINT_TYPE, |
309 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
310 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ |
311 | CTI_INTMAX_TYPE, |
312 | CTI_UINTMAX_TYPE, |
313 | CTI_WIDEST_INT_LIT_TYPE, |
314 | CTI_WIDEST_UINT_LIT_TYPE, |
315 | |
316 | /* Types for <stdint.h>, that may not be defined on all |
317 | targets. */ |
318 | CTI_SIG_ATOMIC_TYPE, |
319 | CTI_INT8_TYPE, |
320 | CTI_INT16_TYPE, |
321 | CTI_INT32_TYPE, |
322 | CTI_INT64_TYPE, |
323 | CTI_UINT8_TYPE, |
324 | CTI_UINT16_TYPE, |
325 | CTI_UINT32_TYPE, |
326 | CTI_UINT64_TYPE, |
327 | CTI_INT_LEAST8_TYPE, |
328 | CTI_INT_LEAST16_TYPE, |
329 | CTI_INT_LEAST32_TYPE, |
330 | CTI_INT_LEAST64_TYPE, |
331 | CTI_UINT_LEAST8_TYPE, |
332 | CTI_UINT_LEAST16_TYPE, |
333 | CTI_UINT_LEAST32_TYPE, |
334 | CTI_UINT_LEAST64_TYPE, |
335 | CTI_INT_FAST8_TYPE, |
336 | CTI_INT_FAST16_TYPE, |
337 | CTI_INT_FAST32_TYPE, |
338 | CTI_INT_FAST64_TYPE, |
339 | CTI_UINT_FAST8_TYPE, |
340 | CTI_UINT_FAST16_TYPE, |
341 | CTI_UINT_FAST32_TYPE, |
342 | CTI_UINT_FAST64_TYPE, |
343 | CTI_INTPTR_TYPE, |
344 | CTI_UINTPTR_TYPE, |
345 | |
346 | CTI_CHAR_ARRAY_TYPE, |
347 | CTI_CHAR8_ARRAY_TYPE, |
348 | CTI_CHAR16_ARRAY_TYPE, |
349 | CTI_CHAR32_ARRAY_TYPE, |
350 | CTI_WCHAR_ARRAY_TYPE, |
351 | CTI_STRING_TYPE, |
352 | CTI_CONST_STRING_TYPE, |
353 | |
354 | /* Type for boolean expressions (bool in C++, int in C). */ |
355 | CTI_TRUTHVALUE_TYPE, |
356 | CTI_TRUTHVALUE_TRUE, |
357 | CTI_TRUTHVALUE_FALSE, |
358 | |
359 | CTI_DEFAULT_FUNCTION_TYPE, |
360 | |
361 | CTI_NULL, |
362 | CTI_NULLPTR, |
363 | CTI_NULLPTR_TYPE, |
364 | |
365 | /* These are not types, but we have to look them up all the time. */ |
366 | CTI_FUNCTION_NAME_DECL, |
367 | CTI_PRETTY_FUNCTION_NAME_DECL, |
368 | CTI_C99_FUNCTION_NAME_DECL, |
369 | |
370 | CTI_MODULE_HWM, |
371 | /* Below here entities change during compilation. */ |
372 | |
373 | CTI_SAVED_FUNCTION_NAME_DECLS, |
374 | |
375 | CTI_MAX |
376 | }; |
377 | |
378 | #define C_CPP_HASHNODE(id) \ |
379 | (&(((struct c_common_identifier *) (id))->node)) |
380 | #define C_RID_CODE(id) \ |
381 | ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) |
382 | #define C_SET_RID_CODE(id, code) \ |
383 | (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) |
384 | |
385 | /* Identifier part common to the C front ends. Inherits from |
386 | tree_identifier, despite appearances. */ |
387 | struct GTY(()) c_common_identifier { |
388 | struct tree_common common; |
389 | struct cpp_hashnode node; |
390 | }; |
391 | |
392 | /* An entry in the reserved keyword table. */ |
393 | |
394 | struct c_common_resword |
395 | { |
396 | const char *const word; |
397 | ENUM_BITFIELD(rid) const rid : 16; |
398 | const unsigned int disable : 32; |
399 | }; |
400 | |
401 | /* Mode used to build pointers (VOIDmode means ptr_mode). */ |
402 | |
403 | extern machine_mode c_default_pointer_mode; |
404 | |
405 | /* Extra cpp_ttype values for C++. */ |
406 | |
407 | /* A token type for template-ids. If a template-id is processed while |
408 | parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; |
409 | the value of the CPP_TEMPLATE_ID is whatever was returned by |
410 | cp_parser_template_id. */ |
411 | #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) |
412 | |
413 | /* A token type for nested-name-specifiers. If a |
414 | nested-name-specifier is processed while parsing tentatively, it is |
415 | replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the |
416 | CPP_NESTED_NAME_SPECIFIER is whatever was returned by |
417 | cp_parser_nested_name_specifier_opt. */ |
418 | #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) |
419 | |
420 | /* A token type for pre-parsed C++0x decltype. */ |
421 | #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) |
422 | |
423 | /* A token type for pre-parsed primary-expression (lambda- or statement-). */ |
424 | #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1)) |
425 | |
426 | /* The number of token types, including C++-specific ones. */ |
427 | #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1)) |
428 | |
429 | /* Disable mask. Keywords are disabled if (reswords[i].disable & |
430 | mask) is _true_. Thus for keywords which are present in all |
431 | languages the disable field is zero. */ |
432 | |
433 | #define D_CONLY 0x0001 /* C only (not in C++). */ |
434 | #define D_CXXONLY 0x0002 /* C++ only (not in C). */ |
435 | #define D_C99 0x0004 /* In C, C99 only. */ |
436 | #define D_C23 0x0008 /* In C, C23 only. */ |
437 | #define D_CXX11 0x0010 /* In C++, C++11 only. */ |
438 | #define D_EXT 0x0020 /* GCC extension. */ |
439 | #define D_EXT89 0x0040 /* GCC extension incorporated in C99. */ |
440 | #define D_EXT11 0x0080 /* GCC extension incorporated in C23. */ |
441 | #define D_ASM 0x0100 /* Disabled by -fno-asm. */ |
442 | #define D_OBJC 0x0200 /* In Objective C and neither C nor C++. */ |
443 | #define D_CXX_OBJC 0x0400 /* In Objective C, and C++, but not C. */ |
444 | #define D_CXXWARN 0x0800 /* In C warn with -Wcxx-compat. */ |
445 | #define D_CXX_CONCEPTS 0x1000 /* In C++, only with concepts. */ |
446 | #define D_TRANSMEM 0x2000 /* C++ transactional memory TS. */ |
447 | #define D_CXX_CHAR8_T 0x4000 /* In C++, only with -fchar8_t. */ |
448 | #define D_CXX20 0x8000 /* In C++, C++20 only. */ |
449 | #define D_CXX_COROUTINES 0x10000 /* In C++, only with coroutines. */ |
450 | #define D_CXX_MODULES 0x20000 /* In C++, only with modules. */ |
451 | |
452 | #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS |
453 | #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T |
454 | #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES) |
455 | #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES) |
456 | |
457 | /* The reserved keyword table. */ |
458 | extern const struct c_common_resword c_common_reswords[]; |
459 | |
460 | /* The number of items in the reserved keyword table. */ |
461 | extern const unsigned int num_c_common_reswords; |
462 | |
463 | #define char8_type_node c_global_trees[CTI_CHAR8_TYPE] |
464 | #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] |
465 | #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] |
466 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
467 | #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] |
468 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
469 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
470 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] |
471 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
472 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] |
473 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
474 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] |
475 | |
476 | #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] |
477 | #define int8_type_node c_global_trees[CTI_INT8_TYPE] |
478 | #define int16_type_node c_global_trees[CTI_INT16_TYPE] |
479 | #define int32_type_node c_global_trees[CTI_INT32_TYPE] |
480 | #define int64_type_node c_global_trees[CTI_INT64_TYPE] |
481 | #define uint8_type_node c_global_trees[CTI_UINT8_TYPE] |
482 | #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE] |
483 | #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] |
484 | #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] |
485 | #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] |
486 | #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] |
487 | #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] |
488 | #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] |
489 | #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] |
490 | #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] |
491 | #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] |
492 | #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] |
493 | #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] |
494 | #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] |
495 | #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] |
496 | #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] |
497 | #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] |
498 | #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] |
499 | #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] |
500 | #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] |
501 | #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] |
502 | #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] |
503 | |
504 | #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] |
505 | #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] |
506 | #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] |
507 | |
508 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
509 | #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE] |
510 | #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] |
511 | #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] |
512 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] |
513 | #define string_type_node c_global_trees[CTI_STRING_TYPE] |
514 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] |
515 | |
516 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] |
517 | |
518 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
519 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] |
520 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] |
521 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] |
522 | |
523 | /* The node for C++ `__null'. */ |
524 | #define null_node c_global_trees[CTI_NULL] |
525 | /* The nodes for `nullptr'. */ |
526 | #define nullptr_node c_global_trees[CTI_NULLPTR] |
527 | #define nullptr_type_node c_global_trees[CTI_NULLPTR_TYPE] |
528 | |
529 | extern GTY(()) tree c_global_trees[CTI_MAX]; |
530 | |
531 | /* Mark which labels are explicitly declared. |
532 | These may be shadowed, and may be referenced from nested functions. */ |
533 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) |
534 | |
535 | enum c_language_kind |
536 | { |
537 | clk_c = 0, /* C without ObjC features. */ |
538 | clk_objc = 1, /* clk_c with ObjC features. */ |
539 | clk_cxx = 2, /* ANSI/ISO C++ */ |
540 | clk_objcxx = 3 /* clk_cxx with ObjC features. */ |
541 | }; |
542 | |
543 | /* To test for a specific language use c_language, defined by each |
544 | front end. For "ObjC features" or "not C++" use the macros. */ |
545 | extern c_language_kind c_language; |
546 | |
547 | #define c_dialect_cxx() ((c_language & clk_cxx) != 0) |
548 | #define c_dialect_objc() ((c_language & clk_objc) != 0) |
549 | |
550 | /* The various name of operator that appears in error messages. */ |
551 | enum ref_operator { |
552 | /* NULL */ |
553 | RO_NULL, |
554 | /* array indexing */ |
555 | RO_ARRAY_INDEXING, |
556 | /* unary * */ |
557 | RO_UNARY_STAR, |
558 | /* -> */ |
559 | RO_ARROW, |
560 | /* implicit conversion */ |
561 | RO_IMPLICIT_CONVERSION, |
562 | /* ->* */ |
563 | RO_ARROW_STAR |
564 | }; |
565 | |
566 | /* Information about a statement tree. */ |
567 | |
568 | struct GTY(()) stmt_tree_s { |
569 | /* A stack of statement lists being collected. */ |
570 | vec<tree, va_gc> *x_cur_stmt_list; |
571 | |
572 | /* In C++, Nonzero if we should treat statements as full |
573 | expressions. In particular, this variable is non-zero if at the |
574 | end of a statement we should destroy any temporaries created |
575 | during that statement. Similarly, if, at the end of a block, we |
576 | should destroy any local variables in this block. Normally, this |
577 | variable is nonzero, since those are the normal semantics of |
578 | C++. |
579 | |
580 | This flag has no effect in C. */ |
581 | int stmts_are_full_exprs_p; |
582 | }; |
583 | |
584 | typedef struct stmt_tree_s *stmt_tree; |
585 | |
586 | /* Global state pertinent to the current function. Some C dialects |
587 | extend this structure with additional fields. */ |
588 | |
589 | struct GTY(()) c_language_function { |
590 | /* While we are parsing the function, this contains information |
591 | about the statement-tree that we are building. */ |
592 | struct stmt_tree_s x_stmt_tree; |
593 | |
594 | /* Vector of locally defined typedefs, for |
595 | -Wunused-local-typedefs. */ |
596 | vec<tree, va_gc> *local_typedefs; |
597 | }; |
598 | |
599 | #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) |
600 | |
601 | /* When building a statement-tree, this is the current statement list |
602 | being collected. */ |
603 | #define cur_stmt_list (stmt_list_stack->last ()) |
604 | |
605 | #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) |
606 | |
607 | /* Language-specific hooks. */ |
608 | |
609 | /* If non-NULL, this function is called after a precompile header file |
610 | is loaded. */ |
611 | extern void (*lang_post_pch_load) (void); |
612 | |
613 | extern void push_file_scope (void); |
614 | extern void pop_file_scope (void); |
615 | extern stmt_tree current_stmt_tree (void); |
616 | extern tree push_stmt_list (void); |
617 | extern tree pop_stmt_list (tree); |
618 | extern tree add_stmt (tree); |
619 | extern void push_cleanup (tree, tree, bool); |
620 | |
621 | extern tree build_modify_expr (location_t, tree, tree, enum tree_code, |
622 | location_t, tree, tree); |
623 | extern tree build_indirect_ref (location_t, tree, ref_operator); |
624 | |
625 | extern bool has_c_linkage (const_tree decl); |
626 | extern bool c_decl_implicit (const_tree); |
627 | |
628 | /* Switches common to the C front ends. */ |
629 | |
630 | /* Nonzero means don't output line number information. */ |
631 | |
632 | extern char flag_no_line_commands; |
633 | |
634 | /* Nonzero causes -E output not to be done, but directives such as |
635 | #define that have side effects are still obeyed. */ |
636 | |
637 | extern char flag_no_output; |
638 | |
639 | /* Nonzero means dump macros in some fashion; contains the 'D', 'M', |
640 | 'N' or 'U' of the command line switch. */ |
641 | |
642 | extern char flag_dump_macros; |
643 | |
644 | /* Nonzero means pass #include lines through to the output. */ |
645 | |
646 | extern char flag_dump_includes; |
647 | |
648 | /* Nonzero means process PCH files while preprocessing. */ |
649 | |
650 | extern bool flag_pch_preprocess; |
651 | |
652 | /* The file name to which we should write a precompiled header, or |
653 | NULL if no header will be written in this compile. */ |
654 | |
655 | extern const char *pch_file; |
656 | |
657 | /* Nonzero if an ISO standard was selected. It rejects macros in the |
658 | user's namespace. */ |
659 | |
660 | extern int flag_iso; |
661 | |
662 | /* C/ObjC language option variables. */ |
663 | |
664 | |
665 | /* Nonzero means allow type mismatches in conditional expressions; |
666 | just make their values `void'. */ |
667 | |
668 | extern int flag_cond_mismatch; |
669 | |
670 | /* Nonzero means enable C89 Amendment 1 features. */ |
671 | |
672 | extern int flag_isoc94; |
673 | |
674 | /* Nonzero means use the ISO C99 (or later) dialect of C. */ |
675 | |
676 | extern int flag_isoc99; |
677 | |
678 | /* Nonzero means use the ISO C11 (or later) dialect of C. */ |
679 | |
680 | extern int flag_isoc11; |
681 | |
682 | /* Nonzero means use the ISO C23 (or later) dialect of C. */ |
683 | |
684 | extern int flag_isoc23; |
685 | |
686 | /* Nonzero means use the ISO C2Y (or later) dialect of C. */ |
687 | |
688 | extern int flag_isoc2y; |
689 | |
690 | /* Nonzero means that we have builtin functions, and main is an int. */ |
691 | |
692 | extern int flag_hosted; |
693 | |
694 | /* ObjC language option variables. */ |
695 | |
696 | |
697 | /* Tells the compiler that this is a special run. Do not perform any |
698 | compiling, instead we are to test some platform dependent features |
699 | and output a C header file with appropriate definitions. */ |
700 | |
701 | extern int print_struct_values; |
702 | |
703 | /* Tells the compiler what is the constant string class for ObjC. */ |
704 | |
705 | extern const char *constant_string_class_name; |
706 | |
707 | |
708 | /* C++ language option variables. */ |
709 | |
710 | /* The reference version of the ABI for -Wabi. */ |
711 | |
712 | extern int warn_abi_version; |
713 | |
714 | /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is |
715 | less than N and the other is at least N. */ |
716 | #define abi_compat_version_crosses(N) \ |
717 | (abi_version_at_least(N) \ |
718 | != (flag_abi_compat_version == 0 \ |
719 | || flag_abi_compat_version >= (N))) |
720 | |
721 | /* Return TRUE if one of {flag_abi_version,warn_abi_version} is |
722 | less than N and the other is at least N, for use by -Wabi. */ |
723 | #define abi_version_crosses(N) \ |
724 | (abi_version_at_least(N) \ |
725 | != (warn_abi_version == 0 \ |
726 | || warn_abi_version >= (N))) |
727 | |
728 | /* The supported C++ dialects. */ |
729 | |
730 | enum cxx_dialect { |
731 | cxx_unset, |
732 | /* C++98 with TC1 */ |
733 | cxx98, |
734 | cxx03 = cxx98, |
735 | /* C++11 */ |
736 | cxx0x, |
737 | cxx11 = cxx0x, |
738 | /* C++14 */ |
739 | cxx14, |
740 | /* C++17 */ |
741 | cxx17, |
742 | /* C++20 */ |
743 | cxx20, |
744 | /* C++23 */ |
745 | cxx23, |
746 | /* C++26 */ |
747 | cxx26 |
748 | }; |
749 | |
750 | /* The C++ dialect being used. C++98 is the default. */ |
751 | extern enum cxx_dialect cxx_dialect; |
752 | |
753 | /* Maximum template instantiation depth. This limit is rather |
754 | arbitrary, but it exists to limit the time it takes to notice |
755 | excessively recursive template instantiations. */ |
756 | |
757 | extern int max_tinst_depth; |
758 | |
759 | /* Nonzero means that we should not issue warnings about problems that |
760 | occur when the code is executed, because the code being processed |
761 | is not expected to be executed. This is set during parsing. This |
762 | is used for cases like sizeof() and "0 ? a : b". This is a count, |
763 | not a bool, because unexecuted expressions can nest. */ |
764 | |
765 | extern int c_inhibit_evaluation_warnings; |
766 | |
767 | /* Depending on which phase of processing we are in, we may need |
768 | to prefer input_location to libcpp's locations. (Specifically, |
769 | after the C++ lexer is done lexing tokens, but prior to calling |
770 | cpp_finish (), we need to do so. */ |
771 | |
772 | extern bool override_libcpp_locations; |
773 | |
774 | /* C types are partitioned into three subsets: object, function, and |
775 | incomplete types. */ |
776 | #define C_TYPE_OBJECT_P(type) \ |
777 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) |
778 | |
779 | #define C_TYPE_INCOMPLETE_P(type) \ |
780 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) |
781 | |
782 | #define C_TYPE_FUNCTION_P(type) \ |
783 | (TREE_CODE (type) == FUNCTION_TYPE) |
784 | |
785 | /* For convenience we define a single macro to identify the class of |
786 | object or incomplete types. */ |
787 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ |
788 | (!C_TYPE_FUNCTION_P (type)) |
789 | |
790 | /* Return true if TYPE is a vector type that should be subject to the GNU |
791 | vector extensions (as opposed to a vector type that is used only for |
792 | the purposes of defining target-specific built-in functions). */ |
793 | |
794 | inline bool |
795 | gnu_vector_type_p (const_tree type) |
796 | { |
797 | return VECTOR_TYPE_P (type) && !TYPE_INDIVISIBLE_P (type); |
798 | } |
799 | |
800 | struct visibility_flags |
801 | { |
802 | unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ |
803 | unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ |
804 | }; |
805 | |
806 | /* These enumerators are possible types of unsafe conversions. */ |
807 | enum conversion_safety { |
808 | /* The conversion is safe. */ |
809 | SAFE_CONVERSION = 0, |
810 | /* Another type of conversion with problems. */ |
811 | UNSAFE_OTHER, |
812 | /* Conversion between signed and unsigned integers. */ |
813 | UNSAFE_SIGN, |
814 | /* Conversions that reduce the precision of reals including conversions |
815 | from reals to integers. */ |
816 | UNSAFE_REAL, |
817 | /* Conversions from complex to reals or integers, that discard imaginary |
818 | component. */ |
819 | UNSAFE_IMAGINARY |
820 | }; |
821 | |
822 | /* Global visibility options. */ |
823 | extern struct visibility_flags visibility_options; |
824 | |
825 | /* Attribute table common to the C front ends. */ |
826 | extern const struct scoped_attribute_specs c_common_gnu_attribute_table; |
827 | extern const struct scoped_attribute_specs c_common_clang_attribute_table; |
828 | extern const struct scoped_attribute_specs c_common_format_attribute_table; |
829 | |
830 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
831 | ID is the identifier to use, NAME is the string. |
832 | TYPE_DEP indicates whether it depends on type of the function or not |
833 | (i.e. __PRETTY_FUNCTION__). */ |
834 | |
835 | extern tree (*make_fname_decl) (location_t, tree, int); |
836 | |
837 | /* In c-decl.cc and cp/tree.cc. FIXME. */ |
838 | extern void c_register_addr_space (const char *str, addr_space_t as); |
839 | |
840 | /* In c-common.cc. */ |
841 | extern bool in_late_binary_op; |
842 | extern const char *c_addr_space_name (addr_space_t as); |
843 | extern tree identifier_global_value (tree); |
844 | extern tree identifier_global_tag (tree); |
845 | extern int names_builtin_p (const char *); |
846 | extern tree c_linkage_bindings (tree); |
847 | extern void record_builtin_type (enum rid, const char *, tree); |
848 | extern void start_fname_decls (void); |
849 | extern void finish_fname_decls (void); |
850 | extern const char *fname_as_string (int); |
851 | extern tree fname_decl (location_t, unsigned, tree); |
852 | |
853 | extern int check_user_alignment (const_tree, bool, bool); |
854 | extern bool check_function_arguments (location_t loc, const_tree, const_tree, |
855 | int, tree *, vec<location_t> *, |
856 | bool (*comp_types) (tree, tree)); |
857 | extern void check_function_arguments_recurse (void (*) |
858 | (void *, tree, |
859 | unsigned HOST_WIDE_INT), |
860 | void *, tree, |
861 | unsigned HOST_WIDE_INT, |
862 | opt_code); |
863 | extern bool check_builtin_function_arguments (location_t, vec<location_t>, tree, |
864 | tree, int, tree *, bool = true); |
865 | extern void check_function_format (const_tree, tree, int, tree *, |
866 | vec<location_t> *, |
867 | bool (*comp_types) (tree, tree)); |
868 | extern bool attribute_fallthrough_p (tree); |
869 | extern tree handle_format_attribute (tree *, tree, tree, int, bool *); |
870 | extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); |
871 | extern tree handle_unsequenced_attribute (tree *, tree, tree, int, bool *); |
872 | extern tree handle_reproducible_attribute (tree *, tree, tree, int, bool *); |
873 | extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int, |
874 | location_t, |
875 | const struct cl_option_handlers *); |
876 | extern bool default_handle_c_option (size_t, const char *, int); |
877 | extern tree c_common_type_for_mode (machine_mode, int); |
878 | extern tree c_common_type_for_size (unsigned int, int); |
879 | extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, |
880 | int, int); |
881 | extern tree c_common_unsigned_type (tree); |
882 | extern tree c_common_signed_type (tree); |
883 | extern tree c_common_signed_or_unsigned_type (int, tree); |
884 | extern void c_common_init_ts (void); |
885 | extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); |
886 | extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool); |
887 | extern bool decl_with_nonnull_addr_p (const_tree); |
888 | extern tree c_fully_fold (tree, bool, bool *, bool = false); |
889 | extern tree c_wrap_maybe_const (tree, bool); |
890 | extern tree c_common_truthvalue_conversion (location_t, tree); |
891 | extern void c_apply_type_quals_to_decl (int, tree); |
892 | extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int); |
893 | extern tree c_alignof_expr (location_t, tree); |
894 | extern tree c_countof_type (location_t, tree); |
895 | /* Print an error message for invalid operands to arith operation CODE. |
896 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ |
897 | extern void binary_op_error (rich_location *, enum tree_code, tree, tree); |
898 | extern tree fix_string_type (tree); |
899 | extern tree convert_and_check (location_t, tree, tree, bool = false); |
900 | extern bool c_determine_visibility (tree); |
901 | extern bool vector_types_compatible_elements_p (tree, tree); |
902 | extern void mark_valid_location_for_stdc_pragma (bool); |
903 | extern bool valid_location_for_stdc_pragma_p (void); |
904 | extern void set_float_const_decimal64 (void); |
905 | extern void clear_float_const_decimal64 (void); |
906 | extern bool float_const_decimal64_p (void); |
907 | |
908 | extern bool keyword_begins_type_specifier (enum rid); |
909 | extern bool keyword_is_storage_class_specifier (enum rid); |
910 | extern bool keyword_is_type_qualifier (enum rid); |
911 | extern bool keyword_is_decl_specifier (enum rid); |
912 | extern unsigned max_align_t_align (void); |
913 | extern bool cxx_fundamental_alignment_p (unsigned); |
914 | extern bool pointer_to_zero_sized_aggr_p (tree); |
915 | extern bool bool_promoted_to_int_p (tree); |
916 | extern tree fold_for_warn (tree); |
917 | extern tree c_common_get_narrower (tree, int *); |
918 | extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *); |
919 | extern void c_common_finalize_early_debug (void); |
920 | extern bool c_flexible_array_member_type_p (const_tree); |
921 | extern unsigned int c_strict_flex_array_level_of (tree); |
922 | extern bool c_option_is_from_cpp_diagnostics (int); |
923 | extern tree c_hardbool_type_attr_1 (tree, tree *, tree *); |
924 | |
925 | /* Used by convert_and_check; in front ends. */ |
926 | extern tree convert_init (tree, tree); |
927 | |
928 | #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1) |
929 | #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1) |
930 | |
931 | /* Subroutine of build_binary_op, used for certain operations. */ |
932 | extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); |
933 | |
934 | /* Return true if division or modulo op0 / op1 or op0 % op1 may be shortened. |
935 | We can shorten only if we can guarantee that op0 is not signed integral |
936 | minimum or op1 is not -1, because e.g. (long long) INT_MIN / -1 is |
937 | well defined INT_MAX + 1LL if long long is wider than int, but INT_MIN / -1 |
938 | is UB. */ |
939 | inline bool |
940 | may_shorten_divmod (tree op0, tree op1) |
941 | { |
942 | tree type0 = TREE_TYPE (op0); |
943 | if (TYPE_UNSIGNED (type0)) |
944 | return true; |
945 | /* A cast from narrower unsigned won't be signed integral minimum, |
946 | but cast from same or wider precision unsigned could be. */ |
947 | if (TREE_CODE (op0) == NOP_EXPR |
948 | && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (op0, 0))) |
949 | && TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0))) |
950 | && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0))) |
951 | < TYPE_PRECISION (type0))) |
952 | return true; |
953 | if (TREE_CODE (op1) == INTEGER_CST && !integer_all_onesp (op1)) |
954 | return true; |
955 | return false; |
956 | } |
957 | |
958 | /* Subroutine of build_binary_op, used for comparison operations. |
959 | See if the operands have both been converted from subword integer types |
960 | and, if so, perhaps change them both back to their original type. */ |
961 | extern tree shorten_compare (location_t, tree *, tree *, tree *, |
962 | enum tree_code *); |
963 | |
964 | extern tree pointer_int_sum (location_t, enum tree_code, tree, tree, |
965 | bool = true); |
966 | |
967 | /* Add qualifiers to a type, in the fashion for C. */ |
968 | extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0); |
969 | |
970 | /* Build tree nodes and builtin functions common to both C and C++ language |
971 | frontends. */ |
972 | extern void c_common_nodes_and_builtins (void); |
973 | |
974 | extern void disable_builtin_function (const char *); |
975 | |
976 | extern void set_compound_literal_name (tree decl); |
977 | |
978 | extern tree build_va_arg (location_t, tree, tree); |
979 | |
980 | extern const unsigned int c_family_lang_mask; |
981 | extern unsigned int c_common_option_lang_mask (void); |
982 | extern void c_common_diagnostics_set_defaults (diagnostic_context *); |
983 | extern bool c_common_complain_wrong_lang_p (const struct cl_option *); |
984 | extern void c_common_init_options_struct (struct gcc_options *); |
985 | extern void c_common_init_options (unsigned int, struct cl_decoded_option *); |
986 | extern bool c_common_post_options (const char **); |
987 | extern bool c_common_init (void); |
988 | extern void c_common_finish (void); |
989 | extern void c_common_parse_file (void); |
990 | extern alias_set_type c_common_get_alias_set (tree); |
991 | extern void c_register_builtin_type (tree, const char*); |
992 | extern bool c_promoting_integer_type_p (const_tree); |
993 | extern bool self_promoting_args_p (const_tree); |
994 | extern tree strip_pointer_operator (tree); |
995 | extern tree strip_pointer_or_array_types (tree); |
996 | extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); |
997 | |
998 | /* This is the basic parsing function. */ |
999 | extern void c_parse_file (void); |
1000 | |
1001 | extern void c_parse_final_cleanups (void); |
1002 | |
1003 | /* This initializes for preprocess-only mode. */ |
1004 | extern void c_init_preprocess (void); |
1005 | |
1006 | /* These macros provide convenient access to the various _STMT nodes. */ |
1007 | |
1008 | /* Nonzero if a given STATEMENT_LIST represents the outermost binding |
1009 | if a statement expression. */ |
1010 | #define STATEMENT_LIST_STMT_EXPR(NODE) \ |
1011 | TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) |
1012 | |
1013 | /* Nonzero if a label has been added to the statement list. */ |
1014 | #define STATEMENT_LIST_HAS_LABEL(NODE) \ |
1015 | TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) |
1016 | |
1017 | /* C_MAYBE_CONST_EXPR accessors. */ |
1018 | #define C_MAYBE_CONST_EXPR_PRE(NODE) \ |
1019 | TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) |
1020 | #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ |
1021 | TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) |
1022 | #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ |
1023 | TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) |
1024 | #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ |
1025 | TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) |
1026 | #define EXPR_INT_CONST_OPERANDS(EXPR) \ |
1027 | (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ |
1028 | && (TREE_CODE (EXPR) == INTEGER_CST \ |
1029 | || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ |
1030 | && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) |
1031 | |
1032 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
1033 | #define DECL_C_BIT_FIELD(NODE) \ |
1034 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) |
1035 | #define SET_DECL_C_BIT_FIELD(NODE) \ |
1036 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) |
1037 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ |
1038 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) |
1039 | |
1040 | /* True if the decl was an unnamed bitfield. */ |
1041 | #define DECL_UNNAMED_BIT_FIELD(NODE) \ |
1042 | (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE)) |
1043 | |
1044 | /* True iff TYPE is cv decltype(nullptr). */ |
1045 | #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE) |
1046 | |
1047 | /* Returns the underlying type of the given enumeration type. The |
1048 | underlying type is determined in different ways, depending on the |
1049 | properties of the enum: |
1050 | |
1051 | - In C++0x or C23, the underlying type can be explicitly specified, e.g., |
1052 | |
1053 | enum E1 : char { ... } // underlying type is char |
1054 | |
1055 | - In a C++0x scoped enumeration, the underlying type is int |
1056 | unless otherwises specified: |
1057 | |
1058 | enum class E2 { ... } // underlying type is int |
1059 | |
1060 | - Otherwise, the underlying type is determined based on the |
1061 | values of the enumerators. In this case, the |
1062 | ENUM_UNDERLYING_TYPE will not be set until after the definition |
1063 | of the enumeration is completed by finish_enum. */ |
1064 | #define ENUM_UNDERLYING_TYPE(TYPE) \ |
1065 | TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE)) |
1066 | |
1067 | /* Determines whether an ENUMERAL_TYPE has an explicit |
1068 | underlying type. */ |
1069 | #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE)) |
1070 | |
1071 | extern tree do_case (location_t, tree, tree, tree); |
1072 | extern tree build_stmt (location_t, enum tree_code, ...); |
1073 | extern tree build_real_imag_expr (location_t, enum tree_code, tree); |
1074 | |
1075 | /* These functions must be defined by each front-end which implements |
1076 | a variant of the C language. They are used in c-common.cc. */ |
1077 | |
1078 | extern tree build_unary_op (location_t, enum tree_code, tree, bool); |
1079 | extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool); |
1080 | extern tree perform_integral_promotions (tree); |
1081 | |
1082 | /* These functions must be defined by each front-end which implements |
1083 | a variant of the C language. They are used by port files. */ |
1084 | |
1085 | extern tree default_conversion (tree); |
1086 | |
1087 | /* Given two integer or real types, return the type for their sum. |
1088 | Given two compatible ANSI C types, returns the merged type. */ |
1089 | |
1090 | extern tree common_type (tree, tree); |
1091 | |
1092 | extern tree decl_constant_value (tree); |
1093 | |
1094 | /* Handle increment and decrement of boolean types. */ |
1095 | extern tree boolean_increment (enum tree_code, tree); |
1096 | |
1097 | extern int case_compare (splay_tree_key, splay_tree_key); |
1098 | |
1099 | extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, |
1100 | tree = NULL_TREE); |
1101 | extern bool c_switch_covers_all_cases_p (splay_tree, tree); |
1102 | extern bool c_block_may_fallthru (const_tree); |
1103 | |
1104 | extern tree build_function_call (location_t, tree, tree); |
1105 | |
1106 | extern tree build_function_call_vec (location_t, vec<location_t>, tree, |
1107 | vec<tree, va_gc> *, vec<tree, va_gc> *, |
1108 | tree = NULL_TREE); |
1109 | |
1110 | extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *, |
1111 | bool = true); |
1112 | |
1113 | extern tree finish_label_address_expr (tree, location_t); |
1114 | |
1115 | /* Same function prototype, but the C and C++ front ends have |
1116 | different implementations. Used in c-common.cc. */ |
1117 | extern tree lookup_label (tree); |
1118 | extern tree lookup_name (tree); |
1119 | extern bool lvalue_p (const_tree); |
1120 | extern int maybe_adjust_arg_pos_for_attribute (const_tree); |
1121 | extern bool instantiation_dependent_expression_p (tree); |
1122 | |
1123 | extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); |
1124 | extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); |
1125 | extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true); |
1126 | extern tree c_build_shufflevector (location_t, tree, tree, |
1127 | const vec<tree> &, bool = true); |
1128 | extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true); |
1129 | |
1130 | extern void init_c_lex (void); |
1131 | |
1132 | extern void c_cpp_builtins (cpp_reader *); |
1133 | extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); |
1134 | extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level, |
1135 | enum cpp_warning_reason, rich_location *, |
1136 | const char *, va_list *) |
1137 | ATTRIBUTE_GCC_DIAG(5,0); |
1138 | extern int c_common_has_attribute (cpp_reader *, bool); |
1139 | extern int c_common_has_builtin (cpp_reader *); |
1140 | extern int c_common_has_feature (cpp_reader *, bool); |
1141 | |
1142 | /* Implemented by each front end in *-lang.cc. */ |
1143 | extern void c_family_register_lang_features (); |
1144 | |
1145 | /* Implemented in c-family/c-common.cc. */ |
1146 | extern void c_common_register_feature (const char *, bool); |
1147 | extern bool has_feature_p (const char *, bool); |
1148 | |
1149 | extern bool parse_optimize_options (tree, bool); |
1150 | |
1151 | /* Positive if an implicit `extern "C"' scope has just been entered; |
1152 | negative if such a scope has just been exited. */ |
1153 | extern GTY(()) int pending_lang_change; |
1154 | |
1155 | /* Information recorded about each file examined during compilation. */ |
1156 | |
1157 | struct c_fileinfo |
1158 | { |
1159 | int time; /* Time spent in the file. */ |
1160 | |
1161 | /* Flags used only by C++. |
1162 | INTERFACE_ONLY nonzero means that we are in an "interface" section |
1163 | of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust |
1164 | the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and |
1165 | INTERFACE_ONLY is zero, it means that we are responsible for |
1166 | exporting definitions that others might need. */ |
1167 | short interface_only; |
1168 | short interface_unknown; |
1169 | }; |
1170 | |
1171 | struct c_fileinfo *get_fileinfo (const char *); |
1172 | extern void dump_time_statistics (void); |
1173 | |
1174 | extern bool c_dump_tree (void *, tree); |
1175 | |
1176 | extern void verify_sequence_points (tree); |
1177 | |
1178 | extern tree fold_offsetof (tree, tree = size_type_node, |
1179 | tree_code ctx = ERROR_MARK); |
1180 | |
1181 | extern int complete_array_type (tree *, tree, bool); |
1182 | extern void complete_flexible_array_elts (tree); |
1183 | |
1184 | extern tree builtin_type_for_size (int, bool); |
1185 | |
1186 | extern void c_common_mark_addressable_vec (tree); |
1187 | |
1188 | extern void set_underlying_type (tree); |
1189 | extern bool user_facing_original_type_p (const_tree); |
1190 | extern void record_types_used_by_current_var_decl (tree); |
1191 | extern vec<tree, va_gc> *make_tree_vector (void); |
1192 | extern void release_tree_vector (vec<tree, va_gc> *); |
1193 | extern vec<tree, va_gc> *make_tree_vector_single (tree); |
1194 | extern vec<tree, va_gc> *make_tree_vector_from_list (tree); |
1195 | extern vec<tree, va_gc> *append_ctor_to_tree_vector (vec<tree, va_gc> *, |
1196 | tree); |
1197 | extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree); |
1198 | extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); |
1199 | |
1200 | /* Used for communication between c_common_type_for_mode and |
1201 | c_register_builtin_type. */ |
1202 | extern GTY(()) tree registered_builtin_types; |
1203 | |
1204 | /* Read SOURCE_DATE_EPOCH from environment to have a deterministic |
1205 | timestamp to replace embedded current dates to get reproducible |
1206 | results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */ |
1207 | extern time_t cb_get_source_date_epoch (cpp_reader *pfile); |
1208 | |
1209 | /* The value (as a unix timestamp) corresponds to date |
1210 | "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and |
1211 | __TIME__ can store. */ |
1212 | #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799) |
1213 | |
1214 | /* Callback for libcpp for offering spelling suggestions for misspelled |
1215 | directives. */ |
1216 | extern const char *cb_get_suggestion (cpp_reader *, const char *, |
1217 | const char *const *); |
1218 | |
1219 | extern GTY(()) string_concat_db *g_string_concat_db; |
1220 | |
1221 | class substring_loc; |
1222 | extern const char *c_get_substring_location (const substring_loc &substr_loc, |
1223 | location_t *out_loc); |
1224 | |
1225 | /* In c-gimplify.cc. */ |
1226 | typedef hash_map<tree, tree_pair, |
1227 | simple_hashmap_traits<tree_decl_hash, |
1228 | tree_pair>> bc_hash_map_t; |
1229 | typedef struct bc_state |
1230 | { |
1231 | tree bc_label[2]; |
1232 | bc_hash_map_t *bc_hash_map; |
1233 | } bc_state_t; |
1234 | extern void save_bc_state (bc_state_t *); |
1235 | extern void restore_bc_state (bc_state_t *); |
1236 | extern tree c_genericize_control_stmt (tree *, int *, void *, |
1237 | walk_tree_fn, walk_tree_lh); |
1238 | extern void c_genericize (tree); |
1239 | extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); |
1240 | extern tree c_build_bind_expr (location_t, tree, tree); |
1241 | |
1242 | /* In c-lex.cc. */ |
1243 | extern enum cpp_ttype |
1244 | conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind); |
1245 | |
1246 | /* In c-pch.cc */ |
1247 | extern void pch_init (void); |
1248 | extern void pch_cpp_save_state (void); |
1249 | extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); |
1250 | extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, |
1251 | const char *orig); |
1252 | extern void c_common_write_pch (void); |
1253 | extern void c_common_no_more_pch (void); |
1254 | extern void c_common_pch_pragma (cpp_reader *pfile, const char *); |
1255 | |
1256 | /* In *-checksum.c */ |
1257 | extern const unsigned char executable_checksum[16]; |
1258 | |
1259 | /* In c-cppbuiltin.cc */ |
1260 | extern void builtin_define_std (const char *macro); |
1261 | extern void builtin_define_with_value (const char *, const char *, int); |
1262 | extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT); |
1263 | extern void builtin_define_type_sizeof (const char *, tree); |
1264 | extern void c_stddef_cpp_builtins (void); |
1265 | extern void fe_file_change (const line_map_ordinary *); |
1266 | extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char, |
1267 | rich_location *richloc); |
1268 | extern diagnostic_option_id get_option_for_builtin_define (const char *macro_name); |
1269 | |
1270 | /* In c-ppoutput.cc */ |
1271 | extern void init_pp_output (FILE *); |
1272 | extern void preprocess_file (cpp_reader *); |
1273 | extern void pp_file_change (const line_map_ordinary *); |
1274 | extern void pp_dir_change (cpp_reader *, const char *); |
1275 | extern bool check_missing_format_attribute (tree, tree); |
1276 | extern void c_pp_stream_token (cpp_reader *, const cpp_token *, location_t loc); |
1277 | |
1278 | /* In c-omp.cc */ |
1279 | typedef wide_int_bitmask omp_clause_mask; |
1280 | |
1281 | #define OMP_CLAUSE_MASK_1 omp_clause_mask (1) |
1282 | |
1283 | enum c_omp_clause_split |
1284 | { |
1285 | C_OMP_CLAUSE_SPLIT_TARGET = 0, |
1286 | C_OMP_CLAUSE_SPLIT_TEAMS, |
1287 | C_OMP_CLAUSE_SPLIT_DISTRIBUTE, |
1288 | C_OMP_CLAUSE_SPLIT_PARALLEL, |
1289 | C_OMP_CLAUSE_SPLIT_FOR, |
1290 | C_OMP_CLAUSE_SPLIT_SIMD, |
1291 | C_OMP_CLAUSE_SPLIT_COUNT, |
1292 | C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR, |
1293 | C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR, |
1294 | C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR, |
1295 | C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE |
1296 | }; |
1297 | |
1298 | enum c_omp_region_type |
1299 | { |
1300 | C_ORT_OMP = 1 << 0, |
1301 | C_ORT_ACC = 1 << 1, |
1302 | C_ORT_DECLARE_SIMD = 1 << 2, |
1303 | C_ORT_TARGET = 1 << 3, |
1304 | C_ORT_EXIT_DATA = 1 << 4, |
1305 | C_ORT_INTEROP = 1 << 5, |
1306 | C_ORT_DECLARE_MAPPER = 1 << 6, |
1307 | C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD, |
1308 | C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET, |
1309 | C_ORT_OMP_EXIT_DATA = C_ORT_OMP | C_ORT_EXIT_DATA, |
1310 | C_ORT_OMP_INTEROP = C_ORT_OMP | C_ORT_INTEROP, |
1311 | C_ORT_OMP_DECLARE_MAPPER = C_ORT_OMP | C_ORT_DECLARE_MAPPER, |
1312 | C_ORT_ACC_TARGET = C_ORT_ACC | C_ORT_TARGET |
1313 | }; |
1314 | |
1315 | extern tree c_finish_omp_master (location_t, tree); |
1316 | extern tree c_finish_omp_masked (location_t, tree, tree); |
1317 | extern tree c_finish_omp_taskgroup (location_t, tree, tree); |
1318 | extern tree c_finish_omp_critical (location_t, tree, tree, tree); |
1319 | extern tree c_finish_omp_ordered (location_t, tree, tree); |
1320 | extern void c_finish_omp_barrier (location_t); |
1321 | extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, |
1322 | tree, tree, tree, tree, tree, tree, bool, |
1323 | enum omp_memory_order, bool, bool = false); |
1324 | extern bool c_omp_interop_t_p (tree); |
1325 | extern bool c_omp_depend_t_p (tree); |
1326 | extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind, |
1327 | tree); |
1328 | extern void c_finish_omp_flush (location_t, int); |
1329 | extern void c_finish_omp_taskwait (location_t); |
1330 | extern void c_finish_omp_taskyield (location_t); |
1331 | extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree, |
1332 | tree, tree, tree, tree, bool); |
1333 | extern int c_omp_find_generated_loop (tree &, int, walk_tree_lh); |
1334 | extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh); |
1335 | extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int, |
1336 | tree, tree, tree, walk_tree_lh); |
1337 | extern bool c_omp_check_loop_binding_exprs (tree, vec<tree> *); |
1338 | extern tree c_finish_oacc_wait (location_t, tree, tree); |
1339 | extern tree c_oacc_split_loop_clauses (tree, tree *, bool); |
1340 | extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask, |
1341 | tree, tree *); |
1342 | extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree); |
1343 | extern void c_omp_declare_simd_clauses_to_decls (tree, tree); |
1344 | extern bool c_omp_predefined_variable (tree); |
1345 | extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); |
1346 | extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree); |
1347 | extern tree c_omp_check_context_selector (location_t, tree); |
1348 | extern void c_omp_mark_declare_variant (location_t, tree, tree); |
1349 | extern void c_omp_adjust_map_clauses (tree, bool); |
1350 | template<typename T> struct omp_mapper_list; |
1351 | extern void c_omp_find_nested_mappers (struct omp_mapper_list<tree> *, tree); |
1352 | extern tree c_omp_instantiate_mappers (tree); |
1353 | |
1354 | namespace omp_addr_tokenizer { struct omp_addr_token; } |
1355 | typedef omp_addr_tokenizer::omp_addr_token omp_addr_token; |
1356 | |
1357 | class c_omp_address_inspector |
1358 | { |
1359 | location_t loc; |
1360 | tree root_term; |
1361 | bool indirections; |
1362 | int map_supported; |
1363 | |
1364 | protected: |
1365 | tree orig; |
1366 | |
1367 | public: |
1368 | c_omp_address_inspector (location_t loc, tree t) |
1369 | : loc (loc), root_term (NULL_TREE), indirections (false), |
1370 | map_supported (-1), orig (t) |
1371 | { |
1372 | } |
1373 | |
1374 | ~c_omp_address_inspector () |
1375 | { |
1376 | } |
1377 | |
1378 | virtual bool processing_template_decl_p () |
1379 | { |
1380 | return false; |
1381 | } |
1382 | |
1383 | virtual void emit_unmappable_type_notes (tree) |
1384 | { |
1385 | } |
1386 | |
1387 | virtual tree convert_from_reference (tree) |
1388 | { |
1389 | gcc_unreachable (); |
1390 | } |
1391 | |
1392 | virtual tree build_array_ref (location_t loc, tree arr, tree idx) |
1393 | { |
1394 | tree eltype = TREE_TYPE (TREE_TYPE (arr)); |
1395 | return build4_loc (loc, code: ARRAY_REF, type: eltype, arg0: arr, arg1: idx, NULL_TREE, |
1396 | NULL_TREE); |
1397 | } |
1398 | |
1399 | virtual bool check_clause (tree); |
1400 | tree get_root_term (bool); |
1401 | |
1402 | tree unconverted_ref_origin (); |
1403 | bool component_access_p (); |
1404 | |
1405 | bool map_supported_p (); |
1406 | |
1407 | tree get_origin (tree); |
1408 | tree maybe_unconvert_ref (tree); |
1409 | |
1410 | bool maybe_zero_length_array_section (tree); |
1411 | |
1412 | tree expand_array_base (tree, vec<omp_addr_token *> &, tree, unsigned *, |
1413 | c_omp_region_type); |
1414 | tree expand_component_selector (tree, vec<omp_addr_token *> &, tree, |
1415 | unsigned *, c_omp_region_type); |
1416 | tree expand_map_clause (tree, tree, vec<omp_addr_token *> &, |
1417 | c_omp_region_type); |
1418 | }; |
1419 | |
1420 | enum c_omp_directive_kind { |
1421 | C_OMP_DIR_STANDALONE, |
1422 | C_OMP_DIR_CONSTRUCT, |
1423 | C_OMP_DIR_DECLARATIVE, |
1424 | C_OMP_DIR_UTILITY, |
1425 | C_OMP_DIR_INFORMATIONAL, |
1426 | C_OMP_DIR_META |
1427 | }; |
1428 | |
1429 | struct c_omp_directive { |
1430 | const char *first, *second, *third; |
1431 | unsigned int id; |
1432 | enum c_omp_directive_kind kind; |
1433 | bool simd; |
1434 | }; |
1435 | |
1436 | extern const struct c_omp_directive c_omp_directives[]; |
1437 | extern const struct c_omp_directive *c_omp_categorize_directive (const char *, |
1438 | const char *, |
1439 | const char *); |
1440 | extern tree c_omp_expand_variant_construct (vec<struct omp_variant> &); |
1441 | |
1442 | /* Return next tree in the chain for chain_next walking of tree nodes. */ |
1443 | inline tree |
1444 | c_tree_chain_next (tree t) |
1445 | { |
1446 | /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different |
1447 | kind of object, never a long chain of nodes. Prefer |
1448 | TYPE_NEXT_VARIANT for types. */ |
1449 | if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) |
1450 | return TYPE_NEXT_VARIANT (t); |
1451 | /* Otherwise, if there is TREE_CHAIN, return it. */ |
1452 | if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) |
1453 | return TREE_CHAIN (t); |
1454 | return NULL; |
1455 | } |
1456 | |
1457 | /* Return the hardbool attribute associated with TYPE, if there is one, provided |
1458 | that TYPE looks like an enumeral type that might have been set up by |
1459 | handle_hardbool_attribute. Return NULL otherwise. |
1460 | |
1461 | If FALSE_VALUE or TRUE_VALUE are non-NULL and TYPE is a hardened boolean |
1462 | type, store the corresponding representation values. */ |
1463 | static inline tree |
1464 | c_hardbool_type_attr (tree type, |
1465 | tree *false_value = NULL, tree *true_value = NULL) |
1466 | { |
1467 | if (TREE_CODE (type) != ENUMERAL_TYPE |
1468 | || TYPE_LANG_SPECIFIC (type)) |
1469 | return NULL_TREE; |
1470 | |
1471 | return c_hardbool_type_attr_1 (type, false_value, true_value); |
1472 | } |
1473 | |
1474 | /* Mask used by tm_stmt_attr. */ |
1475 | #define TM_STMT_ATTR_OUTER 2 |
1476 | #define TM_STMT_ATTR_ATOMIC 4 |
1477 | #define TM_STMT_ATTR_RELAXED 8 |
1478 | |
1479 | /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these |
1480 | are ordered specifically such that more restrictive attributes are |
1481 | at lower bit positions. This fact is known by the C++ tm attribute |
1482 | inheritance code such that least bit extraction (mask & -mask) results |
1483 | in the most restrictive attribute. */ |
1484 | #define TM_ATTR_SAFE 1 |
1485 | #define TM_ATTR_CALLABLE 2 |
1486 | #define TM_ATTR_PURE 4 |
1487 | #define TM_ATTR_IRREVOCABLE 8 |
1488 | #define TM_ATTR_MAY_CANCEL_OUTER 16 |
1489 | |
1490 | /* A suffix-identifier value doublet that represents user-defined literals |
1491 | for C++-0x. */ |
1492 | enum overflow_type { |
1493 | OT_UNDERFLOW = -1, |
1494 | OT_NONE, |
1495 | OT_OVERFLOW |
1496 | }; |
1497 | |
1498 | struct GTY(()) tree_userdef_literal { |
1499 | struct tree_base base; |
1500 | tree suffix_id; |
1501 | tree value; |
1502 | tree num_string; |
1503 | enum overflow_type overflow; |
1504 | }; |
1505 | |
1506 | #define USERDEF_LITERAL_SUFFIX_ID(NODE) \ |
1507 | (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) |
1508 | |
1509 | #define USERDEF_LITERAL_VALUE(NODE) \ |
1510 | (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) |
1511 | |
1512 | #define USERDEF_LITERAL_OVERFLOW(NODE) \ |
1513 | (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) |
1514 | |
1515 | #define USERDEF_LITERAL_NUM_STRING(NODE) \ |
1516 | (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) |
1517 | |
1518 | #define USERDEF_LITERAL_TYPE(NODE) \ |
1519 | (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) |
1520 | |
1521 | extern tree build_userdef_literal (tree suffix_id, tree value, |
1522 | enum overflow_type overflow, |
1523 | tree num_string); |
1524 | |
1525 | |
1526 | /* WHILE_STMT accessors. These give access to the condition of the |
1527 | while statement, the body, and name of the while statement, and |
1528 | condition preparation statements and number of its nested cleanups, |
1529 | respectively. */ |
1530 | #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) |
1531 | #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) |
1532 | #define WHILE_NAME(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 2) |
1533 | #define WHILE_COND_PREP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 3) |
1534 | #define WHILE_COND_CLEANUP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 4) |
1535 | |
1536 | /* DO_STMT accessors. These give access to the condition of the do |
1537 | statement, the body and name of the do statement, respectively. */ |
1538 | #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) |
1539 | #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) |
1540 | #define DO_NAME(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 2) |
1541 | |
1542 | /* FOR_STMT accessors. These give access to the init statement, |
1543 | condition, update expression, body and name of the for statement, |
1544 | and condition preparation statements and number of its nested cleanups, |
1545 | respectively. */ |
1546 | #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) |
1547 | #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) |
1548 | #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) |
1549 | #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) |
1550 | #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4) |
1551 | #define FOR_NAME(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 5) |
1552 | #define FOR_COND_PREP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 6) |
1553 | #define FOR_COND_CLEANUP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 7) |
1554 | |
1555 | /* BREAK_STMT accessors. */ |
1556 | #define BREAK_NAME(NODE) TREE_OPERAND (BREAK_STMT_CHECK (NODE), 0) |
1557 | |
1558 | /* CONTINUE_STMT accessors. */ |
1559 | #define CONTINUE_NAME(NODE) TREE_OPERAND (CONTINUE_STMT_CHECK (NODE), 0) |
1560 | |
1561 | #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) |
1562 | #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) |
1563 | #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) |
1564 | #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3) |
1565 | #define SWITCH_STMT_NAME(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 4) |
1566 | /* True if there are case labels for all possible values of switch cond, either |
1567 | because there is a default: case label or because the case label ranges cover |
1568 | all values. */ |
1569 | #define SWITCH_STMT_ALL_CASES_P(NODE) \ |
1570 | TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE)) |
1571 | /* True if the body of a switch stmt contains no BREAK_STMTs. */ |
1572 | #define SWITCH_STMT_NO_BREAK_P(NODE) \ |
1573 | TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE)) |
1574 | |
1575 | |
1576 | /* Nonzero if NODE is the target for genericization of 'break' stmts. */ |
1577 | #define LABEL_DECL_BREAK(NODE) \ |
1578 | DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE)) |
1579 | |
1580 | /* Nonzero if NODE is the target for genericization of 'continue' stmts. */ |
1581 | #define LABEL_DECL_CONTINUE(NODE) \ |
1582 | DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE)) |
1583 | |
1584 | extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree); |
1585 | |
1586 | /* Possibe cases of scalar_to_vector conversion. */ |
1587 | enum stv_conv { |
1588 | stv_error, /* Error occurred. */ |
1589 | stv_nothing, /* Nothing happened. */ |
1590 | stv_firstarg, /* First argument must be expanded. */ |
1591 | stv_secondarg /* Second argument must be expanded. */ |
1592 | }; |
1593 | |
1594 | extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, |
1595 | tree op0, tree op1, bool); |
1596 | |
1597 | extern tree find_inv_trees (tree *, int *, void *); |
1598 | extern tree replace_inv_trees (tree *, int *, void *); |
1599 | |
1600 | extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION); |
1601 | extern bool valid_array_size_p (location_t, const_tree, tree, bool = true); |
1602 | extern void invalid_array_size_error (location_t, cst_size_error, |
1603 | const_tree, const_tree); |
1604 | |
1605 | /* In c-warn.cc. */ |
1606 | extern void constant_expression_warning (tree); |
1607 | extern void constant_expression_error (tree); |
1608 | extern void overflow_warning (location_t, tree, tree = NULL_TREE); |
1609 | extern void warn_logical_operator (location_t, enum tree_code, tree, |
1610 | enum tree_code, tree, enum tree_code, tree); |
1611 | extern void warn_tautological_cmp (const op_location_t &, enum tree_code, |
1612 | tree, tree); |
1613 | extern void warn_logical_not_parentheses (location_t, enum tree_code, tree, |
1614 | tree); |
1615 | extern bool warn_if_unused_value (const_tree, location_t, bool = false); |
1616 | extern bool strict_aliasing_warning (location_t, tree, tree); |
1617 | extern void sizeof_pointer_memaccess_warning (location_t *, tree, |
1618 | vec<tree, va_gc> *, tree *, |
1619 | bool (*) (tree, tree)); |
1620 | extern void check_main_parameter_types (tree decl); |
1621 | extern void warnings_for_convert_and_check (location_t, tree, tree, tree); |
1622 | extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool); |
1623 | extern void warn_for_omitted_condop (location_t, tree); |
1624 | extern bool warn_for_restrict (unsigned, tree *, unsigned); |
1625 | extern void warn_for_address_of_packed_member (tree, tree); |
1626 | extern void warn_parm_array_mismatch (location_t, tree, tree); |
1627 | extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree); |
1628 | extern void do_warn_array_compare (location_t, tree_code, tree, tree); |
1629 | |
1630 | /* Places where an lvalue, or modifiable lvalue, may be required. |
1631 | Used to select diagnostic messages in lvalue_error and |
1632 | readonly_error. */ |
1633 | enum lvalue_use { |
1634 | lv_assign, |
1635 | lv_increment, |
1636 | lv_decrement, |
1637 | lv_addressof, |
1638 | lv_asm |
1639 | }; |
1640 | |
1641 | extern void lvalue_error (location_t, enum lvalue_use); |
1642 | extern void invalid_indirection_error (location_t, tree, ref_operator); |
1643 | extern void readonly_error (location_t, tree, enum lvalue_use); |
1644 | extern void warn_array_subscript_with_type_char (location_t, tree); |
1645 | extern void warn_about_parentheses (location_t, |
1646 | enum tree_code, |
1647 | enum tree_code, tree, |
1648 | enum tree_code, tree); |
1649 | extern void warn_for_unused_label (tree label); |
1650 | extern void warn_for_div_by_zero (location_t, tree divisor); |
1651 | extern void warn_for_memset (location_t, tree, tree, int); |
1652 | extern void warn_for_calloc (location_t *, tree, vec<tree, va_gc> *, |
1653 | tree *, tree); |
1654 | extern void warn_for_alloc_size (location_t, tree, tree, tree); |
1655 | extern void warn_for_sign_compare (location_t, |
1656 | tree orig_op0, tree orig_op1, |
1657 | tree op0, tree op1, |
1658 | tree result_type, |
1659 | enum tree_code resultcode); |
1660 | extern void do_warn_double_promotion (tree, tree, tree, const char *, |
1661 | location_t); |
1662 | extern void do_warn_unused_parameter (tree); |
1663 | extern void record_locally_defined_typedef (tree); |
1664 | extern void maybe_record_typedef_use (tree); |
1665 | extern void maybe_warn_unused_local_typedefs (void); |
1666 | extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree); |
1667 | extern bool maybe_warn_shift_overflow (location_t, tree, tree); |
1668 | extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **); |
1669 | extern bool diagnose_mismatched_attributes (tree, tree); |
1670 | extern tree do_warn_duplicated_branches_r (tree *, int *, void *); |
1671 | extern void warn_for_multistatement_macros (location_t, location_t, |
1672 | location_t, enum rid); |
1673 | |
1674 | extern void check_for_xor_used_as_pow (location_t lhs_loc, tree lhs_val, |
1675 | location_t operator_loc, |
1676 | location_t rhs_loc, tree rhs_val); |
1677 | |
1678 | /* In c-attribs.cc. */ |
1679 | extern bool attribute_takes_identifier_p (const_tree); |
1680 | extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *); |
1681 | extern tree handle_unused_attribute (tree *, tree, tree, int, bool *); |
1682 | extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *); |
1683 | extern int parse_tm_stmt_attr (tree, int); |
1684 | extern int tm_attr_to_mask (tree); |
1685 | extern tree tm_mask_to_attr (int); |
1686 | extern tree find_tm_attribute (tree); |
1687 | extern const struct attribute_spec::exclusions attr_aligned_exclusions[]; |
1688 | extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[]; |
1689 | extern const struct attribute_spec::exclusions attr_noreturn_exclusions[]; |
1690 | extern tree handle_aligned_attribute (tree *, tree, tree, int, bool *); |
1691 | extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *); |
1692 | extern tree handle_musttail_attribute (tree *, tree, tree, int, bool *); |
1693 | extern bool has_attribute (location_t, tree, tree, tree (*)(tree)); |
1694 | extern tree build_attr_access_from_parms (tree, bool); |
1695 | extern void set_musttail_on_return (tree, location_t, bool); |
1696 | |
1697 | /* In c-format.cc. */ |
1698 | extern bool valid_format_string_type_p (tree); |
1699 | |
1700 | /* A bitmap of flags to positional_argument. */ |
1701 | enum posargflags { |
1702 | /* Consider positional attribute argument value zero valid. */ |
1703 | POSARG_ZERO = 1, |
1704 | /* Consider positional attribute argument value valid if it refers |
1705 | to the ellipsis (i.e., beyond the last typed argument). */ |
1706 | POSARG_ELLIPSIS = 2 |
1707 | }; |
1708 | |
1709 | extern tree positional_argument (const_tree, const_tree, tree &, tree_code, |
1710 | int = 0, int = posargflags ()); |
1711 | |
1712 | extern enum flt_eval_method |
1713 | excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method); |
1714 | |
1715 | extern int c_flt_eval_method (bool ts18661_p); |
1716 | extern void add_no_sanitize_value (tree node, unsigned int flags); |
1717 | |
1718 | extern void maybe_add_include_fixit (rich_location *, const char *, bool); |
1719 | extern void maybe_suggest_missing_token_insertion (rich_location *richloc, |
1720 | enum cpp_ttype token_type, |
1721 | location_t prev_token_loc); |
1722 | extern void maybe_emit_indirection_note (location_t loc, |
1723 | tree expr, tree expected_type); |
1724 | extern bool compatible_types_for_indirection_note_p (tree type1, tree type2); |
1725 | |
1726 | extern tree braced_lists_to_strings (tree, tree); |
1727 | |
1728 | #if CHECKING_P |
1729 | namespace selftest { |
1730 | /* Declarations for specific families of tests within c-family, |
1731 | by source file, in alphabetical order. */ |
1732 | extern void c_diagnostic_cc_tests (void); |
1733 | extern void c_format_cc_tests (void); |
1734 | extern void c_indentation_cc_tests (void); |
1735 | extern void c_opt_problem_cc_tests (void); |
1736 | extern void c_pretty_print_cc_tests (void); |
1737 | extern void c_spellcheck_cc_tests (void); |
1738 | |
1739 | /* The entrypoint for running all of the above tests. */ |
1740 | extern void c_family_tests (void); |
1741 | } // namespace selftest |
1742 | #endif /* #if CHECKING_P */ |
1743 | |
1744 | #endif /* ! GCC_C_COMMON_H */ |
1745 |
Definitions
- rid
- c_tree_index
- c_common_identifier
- c_common_resword
- c_language_kind
- ref_operator
- stmt_tree_s
- c_language_function
- cxx_dialect
- gnu_vector_type_p
- visibility_flags
- conversion_safety
- may_shorten_divmod
- c_fileinfo
- bc_state
- c_omp_clause_split
- c_omp_region_type
- c_omp_address_inspector
- c_omp_address_inspector
- ~c_omp_address_inspector
- processing_template_decl_p
- emit_unmappable_type_notes
- convert_from_reference
- build_array_ref
- c_omp_directive_kind
- c_omp_directive
- c_tree_chain_next
- c_hardbool_type_attr
- overflow_type
- tree_userdef_literal
- stv_conv
- lvalue_use
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