1 /* Definitions for c-common.c. 2 Copyright (C) 1987-2013 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 "ggc.h" 26 #include "tree.h" 27 28 /* In order for the format checking to accept the C frontend 29 diagnostic framework extensions, you must include this file before 30 diagnostic-core.h, not after. The C front end formats are a subset of those 31 for C++, so they are the appropriate set to use in common code; 32 cp-tree.h overrides this for C++. */ 33 #if defined(GCC_DIAGNOSTIC_CORE_H) 34 #error \ 35 In order for the format checking to accept the C front end diagnostic \ 36 framework extensions, you must include this file before diagnostic-core.h \ 37 never after. 38 #endif 39 #ifndef GCC_DIAG_STYLE 40 #define GCC_DIAG_STYLE __gcc_cdiag__ 41 #endif 42 #include "diagnostic-core.h" 43 44 /* Usage of TREE_LANG_FLAG_?: 45 0: IDENTIFIER_MARKED (used by search routines). 46 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) 47 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) 48 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) 49 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) 50 2: unused 51 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) 52 4: unused 53 */ 54 55 /* Reserved identifiers. This is the union of all the keywords for C, 56 C++, and Objective-C. All the type modifiers have to be in one 57 block at the beginning, because they are used as mask bits. There 58 are 28 type modifiers; if we add many more we will have to redesign 59 the mask mechanism. */ 60 61 enum rid 62 { 63 /* Modifiers: */ 64 /* C, in empirical order of frequency. */ 65 RID_STATIC = 0, 66 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, 67 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, 68 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, 69 RID_NORETURN, 70 71 /* C extensions */ 72 RID_COMPLEX, RID_THREAD, RID_SAT, 73 74 /* C++ */ 75 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, 76 77 /* ObjC ("PQ" reserved words - they do not appear after a '@' and 78 are keywords only in specific contexts) */ 79 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, 80 81 /* ObjC ("PATTR" reserved words - they do not appear after a '@' 82 and are keywords only as property attributes) */ 83 RID_GETTER, RID_SETTER, 84 RID_READONLY, RID_READWRITE, 85 RID_ASSIGN, RID_RETAIN, RID_COPY, 86 RID_NONATOMIC, 87 88 /* C (reserved and imaginary types not implemented, so any use is a 89 syntax error) */ 90 RID_IMAGINARY, 91 92 /* C */ 93 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 94 RID_INT128, 95 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 96 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 97 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 98 RID_SIZEOF, 99 100 /* C extensions */ 101 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 102 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 103 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, 104 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 105 RID_FRACT, RID_ACCUM, 106 107 /* C11 */ 108 RID_ALIGNAS, 109 110 /* This means to warn that this is a C++ keyword, and then treat it 111 as a normal identifier. */ 112 RID_CXX_COMPAT_WARN, 113 114 /* GNU transactional memory extension */ 115 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, 116 117 /* Too many ways of getting the name of a function as a string */ 118 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 119 120 /* C++ (some of these are keywords in Objective-C as well, but only 121 if they appear after a '@') */ 122 RID_BOOL, RID_WCHAR, RID_CLASS, 123 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 124 RID_TEMPLATE, RID_NULL, RID_CATCH, 125 RID_DELETE, RID_FALSE, RID_NAMESPACE, 126 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 127 RID_THIS, RID_THROW, RID_TRUE, 128 RID_TRY, RID_TYPENAME, RID_TYPEID, 129 RID_USING, RID_CHAR16, RID_CHAR32, 130 131 /* casts */ 132 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 133 134 /* C++ extensions */ 135 RID_BASES, RID_DIRECT_BASES, 136 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 137 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 138 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 139 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, 140 RID_IS_ABSTRACT, RID_IS_BASE_OF, 141 RID_IS_CLASS, RID_IS_CONVERTIBLE_TO, 142 RID_IS_EMPTY, RID_IS_ENUM, 143 RID_IS_FINAL, RID_IS_LITERAL_TYPE, 144 RID_IS_POD, RID_IS_POLYMORPHIC, 145 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 146 RID_IS_UNION, RID_UNDERLYING_TYPE, 147 148 /* C++11 */ 149 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, 150 151 /* Objective-C ("AT" reserved words - they are only keywords when 152 they follow '@') */ 153 RID_AT_ENCODE, RID_AT_END, 154 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 155 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, 156 RID_AT_PROTOCOL, RID_AT_SELECTOR, 157 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 158 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 159 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, 160 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, 161 RID_AT_INTERFACE, 162 RID_AT_IMPLEMENTATION, 163 164 /* Named address support, mapping the keyword to a particular named address 165 number. Named address space 0 is reserved for the generic address. If 166 there are more than 254 named addresses, the addr_space_t type will need 167 to be grown from an unsigned char to unsigned short. */ 168 RID_ADDR_SPACE_0, /* generic address */ 169 RID_ADDR_SPACE_1, 170 RID_ADDR_SPACE_2, 171 RID_ADDR_SPACE_3, 172 RID_ADDR_SPACE_4, 173 RID_ADDR_SPACE_5, 174 RID_ADDR_SPACE_6, 175 RID_ADDR_SPACE_7, 176 RID_ADDR_SPACE_8, 177 RID_ADDR_SPACE_9, 178 RID_ADDR_SPACE_10, 179 RID_ADDR_SPACE_11, 180 RID_ADDR_SPACE_12, 181 RID_ADDR_SPACE_13, 182 RID_ADDR_SPACE_14, 183 RID_ADDR_SPACE_15, 184 185 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 186 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 187 188 RID_MAX, 189 190 RID_FIRST_MODIFIER = RID_STATIC, 191 RID_LAST_MODIFIER = RID_ONEWAY, 192 193 RID_FIRST_CXX0X = RID_CONSTEXPR, 194 RID_LAST_CXX0X = RID_STATIC_ASSERT, 195 RID_FIRST_AT = RID_AT_ENCODE, 196 RID_LAST_AT = RID_AT_IMPLEMENTATION, 197 RID_FIRST_PQ = RID_IN, 198 RID_LAST_PQ = RID_ONEWAY, 199 RID_FIRST_PATTR = RID_GETTER, 200 RID_LAST_PATTR = RID_NONATOMIC 201 }; 202 203 #define OBJC_IS_AT_KEYWORD(rid) \ 204 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 205 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 206 207 #define OBJC_IS_PQ_KEYWORD(rid) \ 208 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 209 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 210 211 #define OBJC_IS_PATTR_KEYWORD(rid) \ 212 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ 213 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR) 214 215 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as 216 'class') which are shared in a subtle way between Objective-C and 217 C++. When the lexer is lexing in Objective-C/Objective-C++, if it 218 finds '@' followed by one of these identifiers (eg, '@class'), it 219 recognizes the whole as an Objective-C keyword. If the identifier 220 is found elsewhere, it follows the rules of the C/C++ language. 221 */ 222 #define OBJC_IS_CXX_KEYWORD(rid) \ 223 (rid == RID_CLASS \ 224 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ 225 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) 226 227 /* The elements of `ridpointers' are identifier nodes for the reserved 228 type names and storage classes. It is indexed by a RID_... value. */ 229 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 230 231 /* Standard named or nameless data types of the C compiler. */ 232 233 enum c_tree_index 234 { 235 CTI_CHAR16_TYPE, 236 CTI_CHAR32_TYPE, 237 CTI_WCHAR_TYPE, 238 CTI_UNDERLYING_WCHAR_TYPE, 239 CTI_WINT_TYPE, 240 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 241 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 242 CTI_INTMAX_TYPE, 243 CTI_UINTMAX_TYPE, 244 CTI_WIDEST_INT_LIT_TYPE, 245 CTI_WIDEST_UINT_LIT_TYPE, 246 247 /* Types for <stdint.h>, that may not be defined on all 248 targets. */ 249 CTI_SIG_ATOMIC_TYPE, 250 CTI_INT8_TYPE, 251 CTI_INT16_TYPE, 252 CTI_INT32_TYPE, 253 CTI_INT64_TYPE, 254 CTI_UINT8_TYPE, 255 CTI_UINT16_TYPE, 256 CTI_UINT32_TYPE, 257 CTI_UINT64_TYPE, 258 CTI_INT_LEAST8_TYPE, 259 CTI_INT_LEAST16_TYPE, 260 CTI_INT_LEAST32_TYPE, 261 CTI_INT_LEAST64_TYPE, 262 CTI_UINT_LEAST8_TYPE, 263 CTI_UINT_LEAST16_TYPE, 264 CTI_UINT_LEAST32_TYPE, 265 CTI_UINT_LEAST64_TYPE, 266 CTI_INT_FAST8_TYPE, 267 CTI_INT_FAST16_TYPE, 268 CTI_INT_FAST32_TYPE, 269 CTI_INT_FAST64_TYPE, 270 CTI_UINT_FAST8_TYPE, 271 CTI_UINT_FAST16_TYPE, 272 CTI_UINT_FAST32_TYPE, 273 CTI_UINT_FAST64_TYPE, 274 CTI_INTPTR_TYPE, 275 CTI_UINTPTR_TYPE, 276 277 CTI_CHAR_ARRAY_TYPE, 278 CTI_CHAR16_ARRAY_TYPE, 279 CTI_CHAR32_ARRAY_TYPE, 280 CTI_WCHAR_ARRAY_TYPE, 281 CTI_INT_ARRAY_TYPE, 282 CTI_STRING_TYPE, 283 CTI_CONST_STRING_TYPE, 284 285 /* Type for boolean expressions (bool in C++, int in C). */ 286 CTI_TRUTHVALUE_TYPE, 287 CTI_TRUTHVALUE_TRUE, 288 CTI_TRUTHVALUE_FALSE, 289 290 CTI_DEFAULT_FUNCTION_TYPE, 291 292 /* These are not types, but we have to look them up all the time. */ 293 CTI_FUNCTION_NAME_DECL, 294 CTI_PRETTY_FUNCTION_NAME_DECL, 295 CTI_C99_FUNCTION_NAME_DECL, 296 CTI_SAVED_FUNCTION_NAME_DECLS, 297 298 CTI_VOID_ZERO, 299 300 CTI_NULL, 301 302 CTI_MAX 303 }; 304 305 #define C_CPP_HASHNODE(id) \ 306 (&(((struct c_common_identifier *) (id))->node)) 307 #define C_RID_CODE(id) \ 308 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 309 #define C_SET_RID_CODE(id, code) \ 310 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 311 312 /* Identifier part common to the C front ends. Inherits from 313 tree_identifier, despite appearances. */ 314 struct GTY(()) c_common_identifier { 315 struct tree_common common; 316 struct cpp_hashnode node; 317 }; 318 319 /* An entry in the reserved keyword table. */ 320 321 struct c_common_resword 322 { 323 const char *const word; 324 ENUM_BITFIELD(rid) const rid : 16; 325 const unsigned int disable : 16; 326 }; 327 328 /* Extra cpp_ttype values for C++. */ 329 330 /* A token type for keywords, as opposed to ordinary identifiers. */ 331 #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) 332 333 /* A token type for template-ids. If a template-id is processed while 334 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; 335 the value of the CPP_TEMPLATE_ID is whatever was returned by 336 cp_parser_template_id. */ 337 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) 338 339 /* A token type for nested-name-specifiers. If a 340 nested-name-specifier is processed while parsing tentatively, it is 341 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the 342 CPP_NESTED_NAME_SPECIFIER is whatever was returned by 343 cp_parser_nested_name_specifier_opt. */ 344 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) 345 346 /* A token type for pre-parsed C++0x decltype. */ 347 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) 348 349 /* The number of token types, including C++-specific ones. */ 350 #define N_CP_TTYPES ((int) (CPP_DECLTYPE + 1)) 351 352 /* Disable mask. Keywords are disabled if (reswords[i].disable & 353 mask) is _true_. Thus for keywords which are present in all 354 languages the disable field is zero. */ 355 356 #define D_CONLY 0x001 /* C only (not in C++). */ 357 #define D_CXXONLY 0x002 /* C++ only (not in C). */ 358 #define D_C99 0x004 /* In C, C99 only. */ 359 #define D_CXX0X 0x008 /* In C++, C++0X only. */ 360 #define D_EXT 0x010 /* GCC extension. */ 361 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */ 362 #define D_ASM 0x040 /* Disabled by -fno-asm. */ 363 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ 364 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ 365 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ 366 367 /* The reserved keyword table. */ 368 extern const struct c_common_resword c_common_reswords[]; 369 370 /* The number of items in the reserved keyword table. */ 371 extern const unsigned int num_c_common_reswords; 372 373 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] 374 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] 375 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 376 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] 377 #define wint_type_node c_global_trees[CTI_WINT_TYPE] 378 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 379 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 380 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 381 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 382 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 383 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 384 385 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] 386 #define int8_type_node c_global_trees[CTI_INT8_TYPE] 387 #define int16_type_node c_global_trees[CTI_INT16_TYPE] 388 #define int32_type_node c_global_trees[CTI_INT32_TYPE] 389 #define int64_type_node c_global_trees[CTI_INT64_TYPE] 390 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE] 391 #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE] 392 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] 393 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] 394 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] 395 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] 396 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] 397 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] 398 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] 399 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] 400 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] 401 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] 402 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] 403 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] 404 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] 405 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] 406 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] 407 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] 408 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] 409 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] 410 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] 411 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] 412 413 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] 414 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] 415 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] 416 417 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 418 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] 419 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] 420 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 421 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] 422 #define string_type_node c_global_trees[CTI_STRING_TYPE] 423 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 424 425 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 426 427 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 428 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 429 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 430 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 431 432 /* A node for `((void) 0)'. */ 433 #define void_zero_node c_global_trees[CTI_VOID_ZERO] 434 435 /* The node for C++ `__null'. */ 436 #define null_node c_global_trees[CTI_NULL] 437 438 extern GTY(()) tree c_global_trees[CTI_MAX]; 439 440 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a 441 tree for size reasons. */ 442 struct GTY((variable_size)) sorted_fields_type { 443 int len; 444 tree GTY((length ("%h.len"))) elts[1]; 445 }; 446 447 /* Mark which labels are explicitly declared. 448 These may be shadowed, and may be referenced from nested functions. */ 449 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 450 451 typedef enum c_language_kind 452 { 453 clk_c = 0, /* C90, C94 or C99 */ 454 clk_objc = 1, /* clk_c with ObjC features. */ 455 clk_cxx = 2, /* ANSI/ISO C++ */ 456 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 457 } 458 c_language_kind; 459 460 /* To test for a specific language use c_language, defined by each 461 front end. For "ObjC features" or "not C++" use the macros. */ 462 extern c_language_kind c_language; 463 464 #define c_dialect_cxx() ((c_language & clk_cxx) != 0) 465 #define c_dialect_objc() ((c_language & clk_objc) != 0) 466 467 /* The various name of operator that appears in error messages. */ 468 typedef enum ref_operator { 469 /* NULL */ 470 RO_NULL, 471 /* array indexing */ 472 RO_ARRAY_INDEXING, 473 /* unary * */ 474 RO_UNARY_STAR, 475 /* -> */ 476 RO_ARROW, 477 /* implicit conversion */ 478 RO_IMPLICIT_CONVERSION, 479 /* ->* */ 480 RO_ARROW_STAR 481 } ref_operator; 482 483 /* Information about a statement tree. */ 484 485 struct GTY(()) stmt_tree_s { 486 /* A stack of statement lists being collected. */ 487 vec<tree, va_gc> *x_cur_stmt_list; 488 489 /* In C++, Nonzero if we should treat statements as full 490 expressions. In particular, this variable is non-zero if at the 491 end of a statement we should destroy any temporaries created 492 during that statement. Similarly, if, at the end of a block, we 493 should destroy any local variables in this block. Normally, this 494 variable is nonzero, since those are the normal semantics of 495 C++. 496 497 This flag has no effect in C. */ 498 int stmts_are_full_exprs_p; 499 }; 500 501 typedef struct stmt_tree_s *stmt_tree; 502 503 /* Global state pertinent to the current function. Some C dialects 504 extend this structure with additional fields. */ 505 506 struct GTY(()) c_language_function { 507 /* While we are parsing the function, this contains information 508 about the statement-tree that we are building. */ 509 struct stmt_tree_s x_stmt_tree; 510 511 /* Vector of locally defined typedefs, for 512 -Wunused-local-typedefs. */ 513 vec<tree, va_gc> *local_typedefs; 514 }; 515 516 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) 517 518 /* When building a statement-tree, this is the current statement list 519 being collected. */ 520 #define cur_stmt_list (stmt_list_stack->last ()) 521 522 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) 523 524 /* Language-specific hooks. */ 525 526 /* If non-NULL, this function is called after a precompile header file 527 is loaded. */ 528 extern void (*lang_post_pch_load) (void); 529 530 extern void push_file_scope (void); 531 extern void pop_file_scope (void); 532 extern stmt_tree current_stmt_tree (void); 533 extern tree push_stmt_list (void); 534 extern tree pop_stmt_list (tree); 535 extern tree add_stmt (tree); 536 extern void push_cleanup (tree, tree, bool); 537 extern tree pushdecl_top_level (tree); 538 extern tree pushdecl (tree); 539 extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 540 location_t, tree, tree); 541 extern tree build_indirect_ref (location_t, tree, ref_operator); 542 543 extern int field_decl_cmp (const void *, const void *); 544 extern void resort_sorted_fields (void *, void *, gt_pointer_operator, 545 void *); 546 extern bool has_c_linkage (const_tree decl); 547 548 /* Switches common to the C front ends. */ 550 551 /* Nonzero means don't output line number information. */ 552 553 extern char flag_no_line_commands; 554 555 /* Nonzero causes -E output not to be done, but directives such as 556 #define that have side effects are still obeyed. */ 557 558 extern char flag_no_output; 559 560 /* Nonzero means dump macros in some fashion; contains the 'D', 'M', 561 'N' or 'U' of the command line switch. */ 562 563 extern char flag_dump_macros; 564 565 /* Nonzero means pass #include lines through to the output. */ 566 567 extern char flag_dump_includes; 568 569 /* Nonzero means process PCH files while preprocessing. */ 570 571 extern bool flag_pch_preprocess; 572 573 /* The file name to which we should write a precompiled header, or 574 NULL if no header will be written in this compile. */ 575 576 extern const char *pch_file; 577 578 /* Nonzero if an ISO standard was selected. It rejects macros in the 579 user's namespace. */ 580 581 extern int flag_iso; 582 583 /* C/ObjC language option variables. */ 584 585 586 /* Nonzero means allow type mismatches in conditional expressions; 587 just make their values `void'. */ 588 589 extern int flag_cond_mismatch; 590 591 /* Nonzero means enable C89 Amendment 1 features. */ 592 593 extern int flag_isoc94; 594 595 /* Nonzero means use the ISO C99 (or C11) dialect of C. */ 596 597 extern int flag_isoc99; 598 599 /* Nonzero means use the ISO C11 dialect of C. */ 600 601 extern int flag_isoc11; 602 603 /* Nonzero means that we have builtin functions, and main is an int. */ 604 605 extern int flag_hosted; 606 607 /* ObjC language option variables. */ 608 609 610 /* Tells the compiler that this is a special run. Do not perform any 611 compiling, instead we are to test some platform dependent features 612 and output a C header file with appropriate definitions. */ 613 614 extern int print_struct_values; 615 616 /* Tells the compiler what is the constant string class for ObjC. */ 617 618 extern const char *constant_string_class_name; 619 620 621 /* C++ language option variables. */ 622 623 624 /* Nonzero means generate separate instantiation control files and 625 juggle them at link time. */ 626 627 extern int flag_use_repository; 628 629 /* The supported C++ dialects. */ 630 631 enum cxx_dialect { 632 /* C++98 with TC1 */ 633 cxx98, 634 cxx03 = cxx98, 635 /* C++11 */ 636 cxx0x, 637 cxx11 = cxx0x, 638 /* C++1y (C++17?) */ 639 cxx1y 640 }; 641 642 /* The C++ dialect being used. C++98 is the default. */ 643 extern enum cxx_dialect cxx_dialect; 644 645 /* Maximum template instantiation depth. This limit is rather 646 arbitrary, but it exists to limit the time it takes to notice 647 excessively recursive template instantiations. */ 648 649 extern int max_tinst_depth; 650 651 /* Nonzero means that we should not issue warnings about problems that 652 occur when the code is executed, because the code being processed 653 is not expected to be executed. This is set during parsing. This 654 is used for cases like sizeof() and "0 ? a : b". This is a count, 655 not a bool, because unexecuted expressions can nest. */ 656 657 extern int c_inhibit_evaluation_warnings; 658 659 /* Whether lexing has been completed, so subsequent preprocessor 660 errors should use the compiler's input_location. */ 661 662 extern bool done_lexing; 663 664 /* C types are partitioned into three subsets: object, function, and 665 incomplete types. */ 666 #define C_TYPE_OBJECT_P(type) \ 667 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 668 669 #define C_TYPE_INCOMPLETE_P(type) \ 670 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 671 672 #define C_TYPE_FUNCTION_P(type) \ 673 (TREE_CODE (type) == FUNCTION_TYPE) 674 675 /* For convenience we define a single macro to identify the class of 676 object or incomplete types. */ 677 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 678 (!C_TYPE_FUNCTION_P (type)) 679 680 struct visibility_flags 681 { 682 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ 683 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ 684 }; 685 686 /* Global visibility options. */ 687 extern struct visibility_flags visibility_options; 688 689 /* Attribute table common to the C front ends. */ 690 extern const struct attribute_spec c_common_attribute_table[]; 691 extern const struct attribute_spec c_common_format_attribute_table[]; 692 693 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 694 ID is the identifier to use, NAME is the string. 695 TYPE_DEP indicates whether it depends on type of the function or not 696 (i.e. __PRETTY_FUNCTION__). */ 697 698 extern tree (*make_fname_decl) (location_t, tree, int); 699 700 /* In c-decl.c and cp/tree.c. FIXME. */ 701 extern void c_register_addr_space (const char *str, addr_space_t as); 702 703 /* In c-common.c. */ 704 extern bool in_late_binary_op; 705 extern const char *c_addr_space_name (addr_space_t as); 706 extern tree identifier_global_value (tree); 707 extern tree c_linkage_bindings (tree); 708 extern void record_builtin_type (enum rid, const char *, tree); 709 extern tree build_void_list_node (void); 710 extern void start_fname_decls (void); 711 extern void finish_fname_decls (void); 712 extern const char *fname_as_string (int); 713 extern tree fname_decl (location_t, unsigned, tree); 714 715 extern int check_user_alignment (const_tree, bool); 716 extern void check_function_arguments (const_tree, int, tree *); 717 extern void check_function_arguments_recurse (void (*) 718 (void *, tree, 719 unsigned HOST_WIDE_INT), 720 void *, tree, 721 unsigned HOST_WIDE_INT); 722 extern bool check_builtin_function_arguments (tree, int, tree *); 723 extern void check_function_format (tree, int, tree *); 724 extern tree handle_format_attribute (tree *, tree, tree, int, bool *); 725 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 726 extern bool attribute_takes_identifier_p (const_tree); 727 extern bool c_common_handle_option (size_t, const char *, int, int, location_t, 728 const struct cl_option_handlers *); 729 extern bool default_handle_c_option (size_t, const char *, int); 730 extern tree c_common_type_for_mode (enum machine_mode, int); 731 extern tree c_common_type_for_size (unsigned int, int); 732 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, 733 int, int); 734 extern tree c_common_unsigned_type (tree); 735 extern tree c_common_signed_type (tree); 736 extern tree c_common_signed_or_unsigned_type (int, tree); 737 extern void c_common_init_ts (void); 738 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); 739 extern bool unsafe_conversion_p (tree, tree, bool); 740 extern bool decl_with_nonnull_addr_p (const_tree); 741 extern tree c_fully_fold (tree, bool, bool *); 742 extern tree decl_constant_value_for_optimization (tree); 743 extern tree c_wrap_maybe_const (tree, bool); 744 extern tree c_save_expr (tree); 745 extern tree c_common_truthvalue_conversion (location_t, tree); 746 extern void c_apply_type_quals_to_decl (int, tree); 747 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int); 748 extern tree c_alignof_expr (location_t, tree); 749 /* Print an error message for invalid operands to arith operation CODE. 750 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 751 extern void binary_op_error (location_t, enum tree_code, tree, tree); 752 extern tree fix_string_type (tree); 753 extern void constant_expression_warning (tree); 754 extern void constant_expression_error (tree); 755 extern bool strict_aliasing_warning (tree, tree, tree); 756 extern void sizeof_pointer_memaccess_warning (location_t *, tree, 757 vec<tree, va_gc> *, tree *, 758 bool (*) (tree, tree)); 759 extern void warnings_for_convert_and_check (tree, tree, tree); 760 extern tree convert_and_check (tree, tree); 761 extern void overflow_warning (location_t, tree); 762 extern bool warn_if_unused_value (const_tree, location_t); 763 extern void warn_logical_operator (location_t, enum tree_code, tree, 764 enum tree_code, tree, enum tree_code, tree); 765 extern void check_main_parameter_types (tree decl); 766 extern bool c_determine_visibility (tree); 767 extern bool same_scalar_type_ignoring_signedness (tree, tree); 768 extern void mark_valid_location_for_stdc_pragma (bool); 769 extern bool valid_location_for_stdc_pragma_p (void); 770 extern void set_float_const_decimal64 (void); 771 extern void clear_float_const_decimal64 (void); 772 extern bool float_const_decimal64_p (void); 773 774 extern bool keyword_begins_type_specifier (enum rid); 775 extern bool keyword_is_storage_class_specifier (enum rid); 776 extern bool keyword_is_type_qualifier (enum rid); 777 extern bool keyword_is_decl_specifier (enum rid); 778 extern bool cxx_fundamental_alignment_p (unsigned); 779 780 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1) 781 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1) 782 783 /* Subroutine of build_binary_op, used for certain operations. */ 784 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 785 786 /* Subroutine of build_binary_op, used for comparison operations. 787 See if the operands have both been converted from subword integer types 788 and, if so, perhaps change them both back to their original type. */ 789 extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); 790 791 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree); 792 793 /* Add qualifiers to a type, in the fashion for C. */ 794 extern tree c_build_qualified_type (tree, int); 795 796 /* Build tree nodes and builtin functions common to both C and C++ language 797 frontends. */ 798 extern void c_common_nodes_and_builtins (void); 799 800 extern void disable_builtin_function (const char *); 801 802 extern void set_compound_literal_name (tree decl); 803 804 extern tree build_va_arg (location_t, tree, tree); 805 806 extern const unsigned int c_family_lang_mask; 807 extern unsigned int c_common_option_lang_mask (void); 808 extern void c_common_initialize_diagnostics (diagnostic_context *); 809 extern bool c_common_complain_wrong_lang_p (const struct cl_option *); 810 extern void c_common_init_options_struct (struct gcc_options *); 811 extern void c_common_init_options (unsigned int, struct cl_decoded_option *); 812 extern bool c_common_post_options (const char **); 813 extern bool c_common_init (void); 814 extern void c_common_finish (void); 815 extern void c_common_parse_file (void); 816 extern alias_set_type c_common_get_alias_set (tree); 817 extern void c_register_builtin_type (tree, const char*); 818 extern bool c_promoting_integer_type_p (const_tree); 819 extern int self_promoting_args_p (const_tree); 820 extern tree strip_pointer_operator (tree); 821 extern tree strip_pointer_or_array_types (tree); 822 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 823 824 /* This is the basic parsing function. */ 825 extern void c_parse_file (void); 826 827 extern void warn_for_omitted_condop (location_t, tree); 828 829 /* These macros provide convenient access to the various _STMT nodes. */ 830 831 /* Nonzero if a given STATEMENT_LIST represents the outermost binding 832 if a statement expression. */ 833 #define STATEMENT_LIST_STMT_EXPR(NODE) \ 834 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 835 836 /* Nonzero if a label has been added to the statement list. */ 837 #define STATEMENT_LIST_HAS_LABEL(NODE) \ 838 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 839 840 /* C_MAYBE_CONST_EXPR accessors. */ 841 #define C_MAYBE_CONST_EXPR_PRE(NODE) \ 842 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 843 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 844 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 845 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 846 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 847 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 848 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 849 #define EXPR_INT_CONST_OPERANDS(EXPR) \ 850 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 851 && (TREE_CODE (EXPR) == INTEGER_CST \ 852 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 853 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 854 855 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 856 #define DECL_C_BIT_FIELD(NODE) \ 857 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 858 #define SET_DECL_C_BIT_FIELD(NODE) \ 859 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 860 #define CLEAR_DECL_C_BIT_FIELD(NODE) \ 861 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 862 863 extern tree do_case (location_t, tree, tree); 864 extern tree build_stmt (location_t, enum tree_code, ...); 865 extern tree build_real_imag_expr (location_t, enum tree_code, tree); 866 867 /* These functions must be defined by each front-end which implements 868 a variant of the C language. They are used in c-common.c. */ 869 870 extern tree build_unary_op (location_t, enum tree_code, tree, int); 871 extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); 872 extern tree perform_integral_promotions (tree); 873 874 /* These functions must be defined by each front-end which implements 875 a variant of the C language. They are used by port files. */ 876 877 extern tree default_conversion (tree); 878 879 /* Given two integer or real types, return the type for their sum. 880 Given two compatible ANSI C types, returns the merged type. */ 881 882 extern tree common_type (tree, tree); 883 884 extern tree decl_constant_value (tree); 885 886 /* Handle increment and decrement of boolean types. */ 887 extern tree boolean_increment (enum tree_code, tree); 888 889 extern int case_compare (splay_tree_key, splay_tree_key); 890 891 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree); 892 893 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); 894 895 extern tree build_function_call (location_t, tree, tree); 896 897 extern tree build_function_call_vec (location_t, tree, vec<tree, va_gc> *, 898 vec<tree, va_gc> *); 899 900 extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *); 901 902 extern tree finish_label_address_expr (tree, location_t); 903 904 /* Same function prototype, but the C and C++ front ends have 905 different implementations. Used in c-common.c. */ 906 extern tree lookup_label (tree); 907 extern tree lookup_name (tree); 908 extern bool lvalue_p (const_tree); 909 910 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 911 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 912 extern tree c_build_vec_perm_expr (location_t, tree, tree, tree); 913 914 extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); 915 916 extern void init_c_lex (void); 917 918 extern void c_cpp_builtins (cpp_reader *); 919 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 920 extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int, 921 const char *, va_list *) 922 ATTRIBUTE_GCC_DIAG(6,0); 923 924 extern bool parse_optimize_options (tree, bool); 925 926 /* Positive if an implicit `extern "C"' scope has just been entered; 927 negative if such a scope has just been exited. */ 928 extern GTY(()) int pending_lang_change; 929 930 /* Information recorded about each file examined during compilation. */ 931 932 struct c_fileinfo 933 { 934 int time; /* Time spent in the file. */ 935 936 /* Flags used only by C++. 937 INTERFACE_ONLY nonzero means that we are in an "interface" section 938 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 939 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 940 INTERFACE_ONLY is zero, it means that we are responsible for 941 exporting definitions that others might need. */ 942 short interface_only; 943 short interface_unknown; 944 }; 945 946 struct c_fileinfo *get_fileinfo (const char *); 947 extern void dump_time_statistics (void); 948 949 extern bool c_dump_tree (void *, tree); 950 951 extern void verify_sequence_points (tree); 952 953 extern tree fold_offsetof_1 (tree); 954 extern tree fold_offsetof (tree); 955 956 /* Places where an lvalue, or modifiable lvalue, may be required. 957 Used to select diagnostic messages in lvalue_error and 958 readonly_error. */ 959 enum lvalue_use { 960 lv_assign, 961 lv_increment, 962 lv_decrement, 963 lv_addressof, 964 lv_asm 965 }; 966 967 extern void readonly_error (tree, enum lvalue_use); 968 extern void lvalue_error (location_t, enum lvalue_use); 969 extern void invalid_indirection_error (location_t, tree, ref_operator); 970 971 extern int complete_array_type (tree *, tree, bool); 972 973 extern tree builtin_type_for_size (int, bool); 974 975 extern void c_common_mark_addressable_vec (tree); 976 977 extern void warn_array_subscript_with_type_char (tree); 978 extern void warn_about_parentheses (location_t, 979 enum tree_code, 980 enum tree_code, tree, 981 enum tree_code, tree); 982 extern void warn_for_unused_label (tree label); 983 extern void warn_for_div_by_zero (location_t, tree divisor); 984 extern void warn_for_sign_compare (location_t, 985 tree orig_op0, tree orig_op1, 986 tree op0, tree op1, 987 tree result_type, 988 enum tree_code resultcode); 989 extern void do_warn_double_promotion (tree, tree, tree, const char *, 990 location_t); 991 extern void set_underlying_type (tree); 992 extern void record_locally_defined_typedef (tree); 993 extern void maybe_record_typedef_use (tree); 994 extern void maybe_warn_unused_local_typedefs (void); 995 extern vec<tree, va_gc> *make_tree_vector (void); 996 extern void release_tree_vector (vec<tree, va_gc> *); 997 extern vec<tree, va_gc> *make_tree_vector_single (tree); 998 extern vec<tree, va_gc> *make_tree_vector_from_list (tree); 999 extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); 1000 1001 /* In c-gimplify.c */ 1002 extern void c_genericize (tree); 1003 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1004 extern tree c_build_bind_expr (location_t, tree, tree); 1005 1006 /* In c-pch.c */ 1007 extern void pch_init (void); 1008 extern void pch_cpp_save_state (void); 1009 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1010 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1011 const char *orig); 1012 extern void c_common_write_pch (void); 1013 extern void c_common_no_more_pch (void); 1014 extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1015 1016 /* In *-checksum.c */ 1017 extern const unsigned char executable_checksum[16]; 1018 1019 /* In c-cppbuiltin.c */ 1020 extern void builtin_define_std (const char *macro); 1021 extern void builtin_define_with_value (const char *, const char *, int); 1022 extern void c_stddef_cpp_builtins (void); 1023 extern void fe_file_change (const struct line_map *); 1024 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char); 1025 1026 /* In c-ppoutput.c */ 1027 extern void init_pp_output (FILE *); 1028 extern void preprocess_file (cpp_reader *); 1029 extern void pp_file_change (const struct line_map *); 1030 extern void pp_dir_change (cpp_reader *, const char *); 1031 extern bool check_missing_format_attribute (tree, tree); 1032 1033 /* In c-omp.c */ 1034 extern tree c_finish_omp_master (location_t, tree); 1035 extern tree c_finish_omp_critical (location_t, tree, tree); 1036 extern tree c_finish_omp_ordered (location_t, tree); 1037 extern void c_finish_omp_barrier (location_t); 1038 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, 1039 tree, tree, tree, tree, tree); 1040 extern void c_finish_omp_flush (location_t); 1041 extern void c_finish_omp_taskwait (location_t); 1042 extern void c_finish_omp_taskyield (location_t); 1043 extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); 1044 extern void c_split_parallel_clauses (location_t, tree, tree *, tree *); 1045 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1046 1047 /* Not in c-omp.c; provided by the front end. */ 1048 extern bool c_omp_sharing_predetermined (tree); 1049 extern tree c_omp_remap_decl (tree, bool); 1050 extern void record_types_used_by_current_var_decl (tree); 1051 1052 /* Return next tree in the chain for chain_next walking of tree nodes. */ 1053 static inline tree 1054 c_tree_chain_next (tree t) 1055 { 1056 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different 1057 kind of object, never a long chain of nodes. Prefer 1058 TYPE_NEXT_VARIANT for types. */ 1059 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) 1060 return TYPE_NEXT_VARIANT (t); 1061 /* Otherwise, if there is TREE_CHAIN, return it. */ 1062 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) 1063 return TREE_CHAIN (t); 1064 return NULL; 1065 } 1066 1067 /* Mask used by tm_stmt_attr. */ 1068 #define TM_STMT_ATTR_OUTER 2 1069 #define TM_STMT_ATTR_ATOMIC 4 1070 #define TM_STMT_ATTR_RELAXED 8 1071 1072 extern int parse_tm_stmt_attr (tree, int); 1073 1074 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these 1075 are ordered specifically such that more restrictive attributes are 1076 at lower bit positions. This fact is known by the C++ tm attribute 1077 inheritance code such that least bit extraction (mask & -mask) results 1078 in the most restrictive attribute. */ 1079 #define TM_ATTR_SAFE 1 1080 #define TM_ATTR_CALLABLE 2 1081 #define TM_ATTR_PURE 4 1082 #define TM_ATTR_IRREVOCABLE 8 1083 #define TM_ATTR_MAY_CANCEL_OUTER 16 1084 1085 extern int tm_attr_to_mask (tree); 1086 extern tree tm_mask_to_attr (int); 1087 extern tree find_tm_attribute (tree); 1088 1089 /* A suffix-identifier value doublet that represents user-defined literals 1090 for C++-0x. */ 1091 enum overflow_type { 1092 OT_UNDERFLOW = -1, 1093 OT_NONE, 1094 OT_OVERFLOW 1095 }; 1096 1097 struct GTY(()) tree_userdef_literal { 1098 struct tree_base base; 1099 tree suffix_id; 1100 tree value; 1101 tree num_string; 1102 enum overflow_type overflow; 1103 }; 1104 1105 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \ 1106 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) 1107 1108 #define USERDEF_LITERAL_VALUE(NODE) \ 1109 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) 1110 1111 #define USERDEF_LITERAL_OVERFLOW(NODE) \ 1112 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) 1113 1114 #define USERDEF_LITERAL_NUM_STRING(NODE) \ 1115 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) 1116 1117 #define USERDEF_LITERAL_TYPE(NODE) \ 1118 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) 1119 1120 extern tree build_userdef_literal (tree suffix_id, tree value, 1121 enum overflow_type overflow, 1122 tree num_string); 1123 1124 extern void convert_vector_to_pointer_for_subscript (location_t, tree*, tree); 1125 1126 /* Possibe cases of scalar_to_vector conversion. */ 1127 enum stv_conv { 1128 stv_error, /* Error occured. */ 1129 stv_nothing, /* Nothing happened. */ 1130 stv_firstarg, /* First argument must be expanded. */ 1131 stv_secondarg /* Second argument must be expanded. */ 1132 }; 1133 1134 extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, 1135 tree op0, tree op1, bool); 1136 1137 #endif /* ! GCC_C_COMMON_H */ 1138
