1 /* Definitions for c-common.c. 2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 4 Free Software Foundation, Inc. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 3, or (at your option) any later 11 version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #ifndef GCC_C_COMMON_H 23 #define GCC_C_COMMON_H 24 25 #include "splay-tree.h" 26 #include "cpplib.h" 27 #include "ggc.h" 28 29 /* In order for the format checking to accept the C frontend 30 diagnostic framework extensions, you must include this file before 31 diagnostic-core.h, not after. The C front end formats are a subset of those 32 for C++, so they are the appropriate set to use in common code; 33 cp-tree.h overrides this for C++. */ 34 #if defined(GCC_DIAGNOSTIC_CORE_H) 35 #error \ 36 In order for the format checking to accept the C front end diagnostic \ 37 framework extensions, you must include this file before diagnostic-core.h \ 38 never after. 39 #endif 40 #ifndef GCC_DIAG_STYLE 41 #define GCC_DIAG_STYLE __gcc_cdiag__ 42 #endif 43 #include "diagnostic-core.h" 44 45 /* Usage of TREE_LANG_FLAG_?: 46 0: IDENTIFIER_MARKED (used by search routines). 47 DECL_PRETTY_FUNCTION_P (in VAR_DECL) 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, 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_NONATOMIC, 89 90 /* C (reserved and imaginary types not implemented, so any use is a 91 syntax error) */ 92 RID_IMAGINARY, 93 94 /* C */ 95 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 96 RID_INT128, 97 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 98 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 99 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 100 RID_SIZEOF, 101 102 /* C extensions */ 103 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 104 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 105 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, 106 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 107 RID_FRACT, RID_ACCUM, 108 109 /* C11 */ 110 RID_ALIGNAS, 111 112 /* This means to warn that this is a C++ keyword, and then treat it 113 as a normal identifier. */ 114 RID_CXX_COMPAT_WARN, 115 116 /* GNU transactional memory extension */ 117 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, 118 119 /* Too many ways of getting the name of a function as a string */ 120 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 121 122 /* C++ (some of these are keywords in Objective-C as well, but only 123 if they appear after a '@') */ 124 RID_BOOL, RID_WCHAR, RID_CLASS, 125 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 126 RID_TEMPLATE, RID_NULL, RID_CATCH, 127 RID_DELETE, RID_FALSE, RID_NAMESPACE, 128 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 129 RID_THIS, RID_THROW, RID_TRUE, 130 RID_TRY, RID_TYPENAME, RID_TYPEID, 131 RID_USING, RID_CHAR16, RID_CHAR32, 132 133 /* casts */ 134 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 135 136 /* C++ extensions */ 137 RID_BASES, RID_DIRECT_BASES, 138 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 139 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 140 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 141 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, 142 RID_IS_ABSTRACT, RID_IS_BASE_OF, 143 RID_IS_CLASS, RID_IS_CONVERTIBLE_TO, 144 RID_IS_EMPTY, RID_IS_ENUM, 145 RID_IS_FINAL, RID_IS_LITERAL_TYPE, 146 RID_IS_POD, RID_IS_POLYMORPHIC, 147 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 148 RID_IS_UNION, RID_UNDERLYING_TYPE, 149 150 /* C++11 */ 151 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, 152 153 /* Objective-C ("AT" reserved words - they are only keywords when 154 they follow '@') */ 155 RID_AT_ENCODE, RID_AT_END, 156 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 157 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, 158 RID_AT_PROTOCOL, RID_AT_SELECTOR, 159 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 160 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 161 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, 162 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, 163 RID_AT_INTERFACE, 164 RID_AT_IMPLEMENTATION, 165 166 /* Named address support, mapping the keyword to a particular named address 167 number. Named address space 0 is reserved for the generic address. If 168 there are more than 254 named addresses, the addr_space_t type will need 169 to be grown from an unsigned char to unsigned short. */ 170 RID_ADDR_SPACE_0, /* generic address */ 171 RID_ADDR_SPACE_1, 172 RID_ADDR_SPACE_2, 173 RID_ADDR_SPACE_3, 174 RID_ADDR_SPACE_4, 175 RID_ADDR_SPACE_5, 176 RID_ADDR_SPACE_6, 177 RID_ADDR_SPACE_7, 178 RID_ADDR_SPACE_8, 179 RID_ADDR_SPACE_9, 180 RID_ADDR_SPACE_10, 181 RID_ADDR_SPACE_11, 182 RID_ADDR_SPACE_12, 183 RID_ADDR_SPACE_13, 184 RID_ADDR_SPACE_14, 185 RID_ADDR_SPACE_15, 186 187 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 188 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 189 190 RID_MAX, 191 192 RID_FIRST_MODIFIER = RID_STATIC, 193 RID_LAST_MODIFIER = RID_ONEWAY, 194 195 RID_FIRST_CXX0X = RID_CONSTEXPR, 196 RID_LAST_CXX0X = RID_STATIC_ASSERT, 197 RID_FIRST_AT = RID_AT_ENCODE, 198 RID_LAST_AT = RID_AT_IMPLEMENTATION, 199 RID_FIRST_PQ = RID_IN, 200 RID_LAST_PQ = RID_ONEWAY, 201 RID_FIRST_PATTR = RID_GETTER, 202 RID_LAST_PATTR = RID_NONATOMIC 203 }; 204 205 #define OBJC_IS_AT_KEYWORD(rid) \ 206 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 207 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 208 209 #define OBJC_IS_PQ_KEYWORD(rid) \ 210 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 211 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 212 213 #define OBJC_IS_PATTR_KEYWORD(rid) \ 214 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ 215 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR) 216 217 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as 218 'class') which are shared in a subtle way between Objective-C and 219 C++. When the lexer is lexing in Objective-C/Objective-C++, if it 220 finds '@' followed by one of these identifiers (eg, '@class'), it 221 recognizes the whole as an Objective-C keyword. If the identifier 222 is found elsewhere, it follows the rules of the C/C++ language. 223 */ 224 #define OBJC_IS_CXX_KEYWORD(rid) \ 225 (rid == RID_CLASS \ 226 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ 227 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) 228 229 /* The elements of `ridpointers' are identifier nodes for the reserved 230 type names and storage classes. It is indexed by a RID_... value. */ 231 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 232 233 /* Standard named or nameless data types of the C compiler. */ 234 235 enum c_tree_index 236 { 237 CTI_CHAR16_TYPE, 238 CTI_CHAR32_TYPE, 239 CTI_WCHAR_TYPE, 240 CTI_UNDERLYING_WCHAR_TYPE, 241 CTI_WINT_TYPE, 242 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 243 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 244 CTI_INTMAX_TYPE, 245 CTI_UINTMAX_TYPE, 246 CTI_WIDEST_INT_LIT_TYPE, 247 CTI_WIDEST_UINT_LIT_TYPE, 248 249 /* Types for <stdint.h>, that may not be defined on all 250 targets. */ 251 CTI_SIG_ATOMIC_TYPE, 252 CTI_INT8_TYPE, 253 CTI_INT16_TYPE, 254 CTI_INT32_TYPE, 255 CTI_INT64_TYPE, 256 CTI_UINT8_TYPE, 257 CTI_UINT16_TYPE, 258 CTI_UINT32_TYPE, 259 CTI_UINT64_TYPE, 260 CTI_INT_LEAST8_TYPE, 261 CTI_INT_LEAST16_TYPE, 262 CTI_INT_LEAST32_TYPE, 263 CTI_INT_LEAST64_TYPE, 264 CTI_UINT_LEAST8_TYPE, 265 CTI_UINT_LEAST16_TYPE, 266 CTI_UINT_LEAST32_TYPE, 267 CTI_UINT_LEAST64_TYPE, 268 CTI_INT_FAST8_TYPE, 269 CTI_INT_FAST16_TYPE, 270 CTI_INT_FAST32_TYPE, 271 CTI_INT_FAST64_TYPE, 272 CTI_UINT_FAST8_TYPE, 273 CTI_UINT_FAST16_TYPE, 274 CTI_UINT_FAST32_TYPE, 275 CTI_UINT_FAST64_TYPE, 276 CTI_INTPTR_TYPE, 277 CTI_UINTPTR_TYPE, 278 279 CTI_CHAR_ARRAY_TYPE, 280 CTI_CHAR16_ARRAY_TYPE, 281 CTI_CHAR32_ARRAY_TYPE, 282 CTI_WCHAR_ARRAY_TYPE, 283 CTI_INT_ARRAY_TYPE, 284 CTI_STRING_TYPE, 285 CTI_CONST_STRING_TYPE, 286 287 /* Type for boolean expressions (bool in C++, int in C). */ 288 CTI_TRUTHVALUE_TYPE, 289 CTI_TRUTHVALUE_TRUE, 290 CTI_TRUTHVALUE_FALSE, 291 292 CTI_DEFAULT_FUNCTION_TYPE, 293 294 /* These are not types, but we have to look them up all the time. */ 295 CTI_FUNCTION_NAME_DECL, 296 CTI_PRETTY_FUNCTION_NAME_DECL, 297 CTI_C99_FUNCTION_NAME_DECL, 298 CTI_SAVED_FUNCTION_NAME_DECLS, 299 300 CTI_VOID_ZERO, 301 302 CTI_NULL, 303 304 CTI_MAX 305 }; 306 307 #define C_CPP_HASHNODE(id) \ 308 (&(((struct c_common_identifier *) (id))->node)) 309 #define C_RID_CODE(id) \ 310 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 311 #define C_SET_RID_CODE(id, code) \ 312 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 313 314 /* Identifier part common to the C front ends. Inherits from 315 tree_identifier, despite appearances. */ 316 struct GTY(()) c_common_identifier { 317 struct tree_common common; 318 struct cpp_hashnode node; 319 }; 320 321 /* An entry in the reserved keyword table. */ 322 323 struct c_common_resword 324 { 325 const char *const word; 326 ENUM_BITFIELD(rid) const rid : 16; 327 const unsigned int disable : 16; 328 }; 329 330 /* Extra cpp_ttype values for C++. */ 331 332 /* A token type for keywords, as opposed to ordinary identifiers. */ 333 #define CPP_KEYWORD ((enum cpp_ttype) (N_TTYPES + 1)) 334 335 /* A token type for template-ids. If a template-id is processed while 336 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; 337 the value of the CPP_TEMPLATE_ID is whatever was returned by 338 cp_parser_template_id. */ 339 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) 340 341 /* A token type for nested-name-specifiers. If a 342 nested-name-specifier is processed while parsing tentatively, it is 343 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the 344 CPP_NESTED_NAME_SPECIFIER is whatever was returned by 345 cp_parser_nested_name_specifier_opt. */ 346 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) 347 348 /* A token type for pre-parsed C++0x decltype. */ 349 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) 350 351 /* The number of token types, including C++-specific ones. */ 352 #define N_CP_TTYPES ((int) (CPP_DECLTYPE + 1)) 353 354 /* Disable mask. Keywords are disabled if (reswords[i].disable & 355 mask) is _true_. Thus for keywords which are present in all 356 languages the disable field is zero. */ 357 358 #define D_CONLY 0x001 /* C only (not in C++). */ 359 #define D_CXXONLY 0x002 /* C++ only (not in C). */ 360 #define D_C99 0x004 /* In C, C99 only. */ 361 #define D_CXX0X 0x008 /* In C++, C++0X only. */ 362 #define D_EXT 0x010 /* GCC extension. */ 363 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */ 364 #define D_ASM 0x040 /* Disabled by -fno-asm. */ 365 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ 366 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ 367 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ 368 369 /* The reserved keyword table. */ 370 extern const struct c_common_resword c_common_reswords[]; 371 372 /* The number of items in the reserved keyword table. */ 373 extern const unsigned int num_c_common_reswords; 374 375 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] 376 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] 377 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 378 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] 379 #define wint_type_node c_global_trees[CTI_WINT_TYPE] 380 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 381 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 382 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 383 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 384 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 385 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 386 387 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] 388 #define int8_type_node c_global_trees[CTI_INT8_TYPE] 389 #define int16_type_node c_global_trees[CTI_INT16_TYPE] 390 #define int32_type_node c_global_trees[CTI_INT32_TYPE] 391 #define int64_type_node c_global_trees[CTI_INT64_TYPE] 392 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE] 393 #define uint16_type_node c_global_trees[CTI_UINT16_TYPE] 394 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] 395 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] 396 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] 397 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] 398 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] 399 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] 400 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] 401 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] 402 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] 403 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] 404 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] 405 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] 406 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] 407 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] 408 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] 409 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] 410 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] 411 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] 412 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] 413 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] 414 415 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] 416 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] 417 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] 418 419 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 420 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] 421 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] 422 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 423 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] 424 #define string_type_node c_global_trees[CTI_STRING_TYPE] 425 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 426 427 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 428 429 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 430 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 431 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 432 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 433 434 /* A node for `((void) 0)'. */ 435 #define void_zero_node c_global_trees[CTI_VOID_ZERO] 436 437 /* The node for C++ `__null'. */ 438 #define null_node c_global_trees[CTI_NULL] 439 440 extern GTY(()) tree c_global_trees[CTI_MAX]; 441 442 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a 443 tree for size reasons. */ 444 struct GTY((variable_size)) sorted_fields_type { 445 int len; 446 tree GTY((length ("%h.len"))) elts[1]; 447 }; 448 449 /* Mark which labels are explicitly declared. 450 These may be shadowed, and may be referenced from nested functions. */ 451 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 452 453 typedef enum c_language_kind 454 { 455 clk_c = 0, /* C90, C94 or C99 */ 456 clk_objc = 1, /* clk_c with ObjC features. */ 457 clk_cxx = 2, /* ANSI/ISO C++ */ 458 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 459 } 460 c_language_kind; 461 462 /* To test for a specific language use c_language, defined by each 463 front end. For "ObjC features" or "not C++" use the macros. */ 464 extern c_language_kind c_language; 465 466 #define c_dialect_cxx() ((c_language & clk_cxx) != 0) 467 #define c_dialect_objc() ((c_language & clk_objc) != 0) 468 469 /* The various name of operator that appears in error messages. */ 470 typedef enum ref_operator { 471 /* NULL */ 472 RO_NULL, 473 /* array indexing */ 474 RO_ARRAY_INDEXING, 475 /* unary * */ 476 RO_UNARY_STAR, 477 /* -> */ 478 RO_ARROW, 479 /* implicit conversion */ 480 RO_IMPLICIT_CONVERSION 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,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,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. We define it in this convoluted way, rather than 520 using VEC_last, because it must be an lvalue. */ 521 522 #define cur_stmt_list \ 523 (*(VEC_address (tree, stmt_list_stack) \ 524 + VEC_length (tree, stmt_list_stack) - 1)) 525 526 #define building_stmt_list_p() (!VEC_empty (tree, stmt_list_stack)) 527 528 /* Language-specific hooks. */ 529 530 /* If non-NULL, this function is called after a precompile header file 531 is loaded. */ 532 extern void (*lang_post_pch_load) (void); 533 534 extern void push_file_scope (void); 535 extern void pop_file_scope (void); 536 extern stmt_tree current_stmt_tree (void); 537 extern tree push_stmt_list (void); 538 extern tree pop_stmt_list (tree); 539 extern tree add_stmt (tree); 540 extern void push_cleanup (tree, tree, bool); 541 extern tree pushdecl_top_level (tree); 542 extern tree pushdecl (tree); 543 extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 544 location_t, tree, tree); 545 extern tree build_indirect_ref (location_t, tree, ref_operator); 546 547 extern int c_expand_decl (tree); 548 549 extern int field_decl_cmp (const void *, const void *); 550 extern void resort_sorted_fields (void *, void *, gt_pointer_operator, 551 void *); 552 extern bool has_c_linkage (const_tree decl); 553 554 /* Switches common to the C front ends. */ 555 556 /* Nonzero means don't output line number information. */ 557 558 extern char flag_no_line_commands; 559 560 /* Nonzero causes -E output not to be done, but directives such as 561 #define that have side effects are still obeyed. */ 562 563 extern char flag_no_output; 564 565 /* Nonzero means dump macros in some fashion; contains the 'D', 'M', 566 'N' or 'U' of the command line switch. */ 567 568 extern char flag_dump_macros; 569 570 /* Nonzero means pass #include lines through to the output. */ 571 572 extern char flag_dump_includes; 573 574 /* Nonzero means process PCH files while preprocessing. */ 575 576 extern bool flag_pch_preprocess; 577 578 /* The file name to which we should write a precompiled header, or 579 NULL if no header will be written in this compile. */ 580 581 extern const char *pch_file; 582 583 /* Nonzero if an ISO standard was selected. It rejects macros in the 584 user's namespace. */ 585 586 extern int flag_iso; 587 588 /* Warn about #pragma directives that are not recognized. */ 589 590 extern int warn_unknown_pragmas; /* Tri state variable. */ 591 592 /* Warn about format/argument anomalies in calls to formatted I/O functions 593 (*printf, *scanf, strftime, strfmon, etc.). */ 594 595 extern int warn_format; 596 597 598 /* C/ObjC language option variables. */ 599 600 601 /* Nonzero means allow type mismatches in conditional expressions; 602 just make their values `void'. */ 603 604 extern int flag_cond_mismatch; 605 606 /* Nonzero means enable C89 Amendment 1 features. */ 607 608 extern int flag_isoc94; 609 610 /* Nonzero means use the ISO C99 (or C11) dialect of C. */ 611 612 extern int flag_isoc99; 613 614 /* Nonzero means use the ISO C11 dialect of C. */ 615 616 extern int flag_isoc11; 617 618 /* Nonzero means that we have builtin functions, and main is an int. */ 619 620 extern int flag_hosted; 621 622 /* ObjC language option variables. */ 623 624 625 /* Tells the compiler that this is a special run. Do not perform any 626 compiling, instead we are to test some platform dependent features 627 and output a C header file with appropriate definitions. */ 628 629 extern int print_struct_values; 630 631 /* Tells the compiler what is the constant string class for ObjC. */ 632 633 extern const char *constant_string_class_name; 634 635 636 /* C++ language option variables. */ 637 638 639 /* Nonzero means generate separate instantiation control files and 640 juggle them at link time. */ 641 642 extern int flag_use_repository; 643 644 /* The supported C++ dialects. */ 645 646 enum cxx_dialect { 647 /* C++98 with TC1 */ 648 cxx98, 649 cxx03 = cxx98, 650 /* C++11 */ 651 cxx0x, 652 cxx11 = cxx0x 653 }; 654 655 /* The C++ dialect being used. C++98 is the default. */ 656 extern enum cxx_dialect cxx_dialect; 657 658 /* Maximum template instantiation depth. This limit is rather 659 arbitrary, but it exists to limit the time it takes to notice 660 excessively recursive template instantiations. */ 661 662 extern int max_tinst_depth; 663 664 /* Nonzero means that we should not issue warnings about problems that 665 occur when the code is executed, because the code being processed 666 is not expected to be executed. This is set during parsing. This 667 is used for cases like sizeof() and "0 ? a : b". This is a count, 668 not a bool, because unexecuted expressions can nest. */ 669 670 extern int c_inhibit_evaluation_warnings; 671 672 /* Whether lexing has been completed, so subsequent preprocessor 673 errors should use the compiler's input_location. */ 674 675 extern bool done_lexing; 676 677 /* C types are partitioned into three subsets: object, function, and 678 incomplete types. */ 679 #define C_TYPE_OBJECT_P(type) \ 680 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 681 682 #define C_TYPE_INCOMPLETE_P(type) \ 683 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 684 685 #define C_TYPE_FUNCTION_P(type) \ 686 (TREE_CODE (type) == FUNCTION_TYPE) 687 688 /* For convenience we define a single macro to identify the class of 689 object or incomplete types. */ 690 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 691 (!C_TYPE_FUNCTION_P (type)) 692 693 struct visibility_flags 694 { 695 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ 696 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ 697 }; 698 699 /* Global visibility options. */ 700 extern struct visibility_flags visibility_options; 701 702 /* Attribute table common to the C front ends. */ 703 extern const struct attribute_spec c_common_attribute_table[]; 704 extern const struct attribute_spec c_common_format_attribute_table[]; 705 706 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 707 ID is the identifier to use, NAME is the string. 708 TYPE_DEP indicates whether it depends on type of the function or not 709 (i.e. __PRETTY_FUNCTION__). */ 710 711 extern tree (*make_fname_decl) (location_t, tree, int); 712 713 /* In c-decl.c and cp/tree.c. FIXME. */ 714 extern void c_register_addr_space (const char *str, addr_space_t as); 715 716 /* In c-common.c. */ 717 extern bool in_late_binary_op; 718 extern const char *c_addr_space_name (addr_space_t as); 719 extern tree identifier_global_value (tree); 720 extern tree c_linkage_bindings (tree); 721 extern void record_builtin_type (enum rid, const char *, tree); 722 extern tree build_void_list_node (void); 723 extern void start_fname_decls (void); 724 extern void finish_fname_decls (void); 725 extern const char *fname_as_string (int); 726 extern tree fname_decl (location_t, unsigned, tree); 727 728 extern int check_user_alignment (const_tree, bool); 729 extern void check_function_arguments (const_tree, int, tree *); 730 extern void check_function_arguments_recurse (void (*) 731 (void *, tree, 732 unsigned HOST_WIDE_INT), 733 void *, tree, 734 unsigned HOST_WIDE_INT); 735 extern bool check_builtin_function_arguments (tree, int, tree *); 736 extern void check_function_format (tree, int, tree *); 737 extern void set_Wformat (int); 738 extern tree handle_format_attribute (tree *, tree, tree, int, bool *); 739 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 740 extern bool attribute_takes_identifier_p (const_tree); 741 extern bool c_common_handle_option (size_t, const char *, int, int, location_t, 742 const struct cl_option_handlers *); 743 extern bool default_handle_c_option (size_t, const char *, int); 744 extern tree c_common_type_for_mode (enum machine_mode, int); 745 extern tree c_common_type_for_size (unsigned int, int); 746 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, 747 int, int); 748 extern tree c_common_unsigned_type (tree); 749 extern tree c_common_signed_type (tree); 750 extern tree c_common_signed_or_unsigned_type (int, tree); 751 extern void c_common_init_ts (void); 752 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); 753 extern bool unsafe_conversion_p (tree, tree, bool); 754 extern bool decl_with_nonnull_addr_p (const_tree); 755 extern tree c_fully_fold (tree, bool, bool *); 756 extern tree decl_constant_value_for_optimization (tree); 757 extern tree c_wrap_maybe_const (tree, bool); 758 extern tree c_save_expr (tree); 759 extern tree c_common_truthvalue_conversion (location_t, tree); 760 extern void c_apply_type_quals_to_decl (int, tree); 761 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int); 762 extern tree c_alignof_expr (location_t, tree); 763 /* Print an error message for invalid operands to arith operation CODE. 764 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 765 extern void binary_op_error (location_t, enum tree_code, tree, tree); 766 extern tree fix_string_type (tree); 767 extern void constant_expression_warning (tree); 768 extern void constant_expression_error (tree); 769 extern bool strict_aliasing_warning (tree, tree, tree); 770 extern void warnings_for_convert_and_check (tree, tree, tree); 771 extern tree convert_and_check (tree, tree); 772 extern void overflow_warning (location_t, tree); 773 extern void warn_logical_operator (location_t, enum tree_code, tree, 774 enum tree_code, tree, enum tree_code, tree); 775 extern void check_main_parameter_types (tree decl); 776 extern bool c_determine_visibility (tree); 777 extern bool same_scalar_type_ignoring_signedness (tree, tree); 778 extern void mark_valid_location_for_stdc_pragma (bool); 779 extern bool valid_location_for_stdc_pragma_p (void); 780 extern void set_float_const_decimal64 (void); 781 extern void clear_float_const_decimal64 (void); 782 extern bool float_const_decimal64_p (void); 783 784 extern bool keyword_begins_type_specifier (enum rid); 785 extern bool keyword_is_storage_class_specifier (enum rid); 786 extern bool keyword_is_type_qualifier (enum rid); 787 extern bool keyword_is_decl_specifier (enum rid); 788 789 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1) 790 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1) 791 792 /* Subroutine of build_binary_op, used for certain operations. */ 793 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 794 795 /* Subroutine of build_binary_op, used for comparison operations. 796 See if the operands have both been converted from subword integer types 797 and, if so, perhaps change them both back to their original type. */ 798 extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); 799 800 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree); 801 802 /* Add qualifiers to a type, in the fashion for C. */ 803 extern tree c_build_qualified_type (tree, int); 804 805 /* Build tree nodes and builtin functions common to both C and C++ language 806 frontends. */ 807 extern void c_common_nodes_and_builtins (void); 808 809 extern void disable_builtin_function (const char *); 810 811 extern void set_compound_literal_name (tree decl); 812 813 extern tree build_va_arg (location_t, tree, tree); 814 815 extern const unsigned int c_family_lang_mask; 816 extern unsigned int c_common_option_lang_mask (void); 817 extern void c_common_initialize_diagnostics (diagnostic_context *); 818 extern bool c_common_complain_wrong_lang_p (const struct cl_option *); 819 extern void c_common_init_options_struct (struct gcc_options *); 820 extern void c_common_init_options (unsigned int, struct cl_decoded_option *); 821 extern bool c_common_post_options (const char **); 822 extern bool c_common_init (void); 823 extern void c_common_finish (void); 824 extern void c_common_parse_file (void); 825 extern alias_set_type c_common_get_alias_set (tree); 826 extern void c_register_builtin_type (tree, const char*); 827 extern bool c_promoting_integer_type_p (const_tree); 828 extern int self_promoting_args_p (const_tree); 829 extern tree strip_pointer_operator (tree); 830 extern tree strip_pointer_or_array_types (tree); 831 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 832 833 /* This is the basic parsing function. */ 834 extern void c_parse_file (void); 835 836 extern void warn_for_omitted_condop (location_t, tree); 837 838 /* These macros provide convenient access to the various _STMT nodes. */ 839 840 /* Nonzero if a given STATEMENT_LIST represents the outermost binding 841 if a statement expression. */ 842 #define STATEMENT_LIST_STMT_EXPR(NODE) \ 843 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 844 845 /* Nonzero if a label has been added to the statement list. */ 846 #define STATEMENT_LIST_HAS_LABEL(NODE) \ 847 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 848 849 /* C_MAYBE_CONST_EXPR accessors. */ 850 #define C_MAYBE_CONST_EXPR_PRE(NODE) \ 851 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 852 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 853 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 854 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 855 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 856 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 857 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 858 #define EXPR_INT_CONST_OPERANDS(EXPR) \ 859 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 860 && (TREE_CODE (EXPR) == INTEGER_CST \ 861 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 862 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 863 864 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 865 #define DECL_C_BIT_FIELD(NODE) \ 866 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 867 #define SET_DECL_C_BIT_FIELD(NODE) \ 868 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 869 #define CLEAR_DECL_C_BIT_FIELD(NODE) \ 870 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 871 872 extern tree do_case (location_t, tree, tree); 873 extern tree build_stmt (location_t, enum tree_code, ...); 874 extern tree build_real_imag_expr (location_t, enum tree_code, tree); 875 876 /* These functions must be defined by each front-end which implements 877 a variant of the C language. They are used in c-common.c. */ 878 879 extern tree build_unary_op (location_t, enum tree_code, tree, int); 880 extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); 881 extern tree perform_integral_promotions (tree); 882 883 /* These functions must be defined by each front-end which implements 884 a variant of the C language. They are used by port files. */ 885 886 extern tree default_conversion (tree); 887 888 /* Given two integer or real types, return the type for their sum. 889 Given two compatible ANSI C types, returns the merged type. */ 890 891 extern tree common_type (tree, tree); 892 893 extern tree decl_constant_value (tree); 894 895 /* Handle increment and decrement of boolean types. */ 896 extern tree boolean_increment (enum tree_code, tree); 897 898 extern int case_compare (splay_tree_key, splay_tree_key); 899 900 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree); 901 902 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); 903 904 extern tree build_function_call (location_t, tree, tree); 905 906 extern tree build_function_call_vec (location_t, tree, 907 VEC(tree,gc) *, VEC(tree,gc) *); 908 909 extern tree resolve_overloaded_builtin (location_t, tree, VEC(tree,gc) *); 910 911 extern tree finish_label_address_expr (tree, location_t); 912 913 /* Same function prototype, but the C and C++ front ends have 914 different implementations. Used in c-common.c. */ 915 extern tree lookup_label (tree); 916 extern tree lookup_name (tree); 917 extern bool lvalue_p (const_tree); 918 919 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 920 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 921 922 extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); 923 924 extern void init_c_lex (void); 925 926 extern void c_cpp_builtins (cpp_reader *); 927 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 928 extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int, 929 const char *, va_list *) 930 ATTRIBUTE_GCC_DIAG(6,0); 931 932 extern bool parse_optimize_options (tree, bool); 933 934 /* Positive if an implicit `extern "C"' scope has just been entered; 935 negative if such a scope has just been exited. */ 936 extern GTY(()) int pending_lang_change; 937 938 /* Information recorded about each file examined during compilation. */ 939 940 struct c_fileinfo 941 { 942 int time; /* Time spent in the file. */ 943 944 /* Flags used only by C++. 945 INTERFACE_ONLY nonzero means that we are in an "interface" section 946 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 947 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 948 INTERFACE_ONLY is zero, it means that we are responsible for 949 exporting definitions that others might need. */ 950 short interface_only; 951 short interface_unknown; 952 }; 953 954 struct c_fileinfo *get_fileinfo (const char *); 955 extern void dump_time_statistics (void); 956 957 extern bool c_dump_tree (void *, tree); 958 959 extern void verify_sequence_points (tree); 960 961 extern tree fold_offsetof_1 (tree); 962 extern tree fold_offsetof (tree); 963 964 /* Places where an lvalue, or modifiable lvalue, may be required. 965 Used to select diagnostic messages in lvalue_error and 966 readonly_error. */ 967 enum lvalue_use { 968 lv_assign, 969 lv_increment, 970 lv_decrement, 971 lv_addressof, 972 lv_asm 973 }; 974 975 extern void readonly_error (tree, enum lvalue_use); 976 extern void lvalue_error (location_t, enum lvalue_use); 977 extern void invalid_indirection_error (location_t, tree, ref_operator); 978 979 extern int complete_array_type (tree *, tree, bool); 980 981 extern tree builtin_type_for_size (int, bool); 982 983 extern void c_common_mark_addressable_vec (tree); 984 985 extern void warn_array_subscript_with_type_char (tree); 986 extern void warn_about_parentheses (enum tree_code, 987 enum tree_code, tree, 988 enum tree_code, tree); 989 extern void warn_for_unused_label (tree label); 990 extern void warn_for_div_by_zero (location_t, tree divisor); 991 extern void warn_for_sign_compare (location_t, 992 tree orig_op0, tree orig_op1, 993 tree op0, tree op1, 994 tree result_type, 995 enum tree_code resultcode); 996 extern void do_warn_double_promotion (tree, tree, tree, const char *, 997 location_t); 998 extern void set_underlying_type (tree); 999 extern void record_locally_defined_typedef (tree); 1000 extern void maybe_record_typedef_use (tree); 1001 extern void maybe_warn_unused_local_typedefs (void); 1002 extern VEC(tree,gc) *make_tree_vector (void); 1003 extern void release_tree_vector (VEC(tree,gc) *); 1004 extern VEC(tree,gc) *make_tree_vector_single (tree); 1005 extern VEC(tree,gc) *make_tree_vector_from_list (tree); 1006 extern VEC(tree,gc) *make_tree_vector_copy (const VEC(tree,gc) *); 1007 1008 /* In c-gimplify.c */ 1009 extern void c_genericize (tree); 1010 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1011 extern tree c_build_bind_expr (location_t, tree, tree); 1012 1013 /* In c-pch.c */ 1014 extern void pch_init (void); 1015 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1016 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1017 const char *orig); 1018 extern void c_common_write_pch (void); 1019 extern void c_common_no_more_pch (void); 1020 extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1021 extern void c_common_print_pch_checksum (FILE *f); 1022 1023 /* In *-checksum.c */ 1024 extern const unsigned char executable_checksum[16]; 1025 1026 /* In c-cppbuiltin.c */ 1027 extern void builtin_define_std (const char *macro); 1028 extern void builtin_define_with_value (const char *, const char *, int); 1029 extern void c_stddef_cpp_builtins (void); 1030 extern void fe_file_change (const struct line_map *); 1031 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char); 1032 1033 /* In c-ppoutput.c */ 1034 extern void init_pp_output (FILE *); 1035 extern void preprocess_file (cpp_reader *); 1036 extern void pp_file_change (const struct line_map *); 1037 extern void pp_dir_change (cpp_reader *, const char *); 1038 extern bool check_missing_format_attribute (tree, tree); 1039 1040 /* In c-omp.c */ 1041 extern tree c_finish_omp_master (location_t, tree); 1042 extern tree c_finish_omp_critical (location_t, tree, tree); 1043 extern tree c_finish_omp_ordered (location_t, tree); 1044 extern void c_finish_omp_barrier (location_t); 1045 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, 1046 tree, tree, tree, tree, tree); 1047 extern void c_finish_omp_flush (location_t); 1048 extern void c_finish_omp_taskwait (location_t); 1049 extern void c_finish_omp_taskyield (location_t); 1050 extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); 1051 extern void c_split_parallel_clauses (location_t, tree, tree *, tree *); 1052 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1053 1054 /* Not in c-omp.c; provided by the front end. */ 1055 extern bool c_omp_sharing_predetermined (tree); 1056 extern tree c_omp_remap_decl (tree, bool); 1057 extern void record_types_used_by_current_var_decl (tree); 1058 1059 /* Return next tree in the chain for chain_next walking of tree nodes. */ 1060 static inline tree 1061 c_tree_chain_next (tree t) 1062 { 1063 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different 1064 kind of object, never a long chain of nodes. Prefer 1065 TYPE_NEXT_VARIANT for types. */ 1066 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) 1067 return TYPE_NEXT_VARIANT (t); 1068 /* Otherwise, if there is TREE_CHAIN, return it. */ 1069 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) 1070 return TREE_CHAIN (t); 1071 return NULL; 1072 } 1073 1074 /* Mask used by tm_stmt_attr. */ 1075 #define TM_STMT_ATTR_OUTER 2 1076 #define TM_STMT_ATTR_ATOMIC 4 1077 #define TM_STMT_ATTR_RELAXED 8 1078 1079 extern int parse_tm_stmt_attr (tree, int); 1080 1081 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these 1082 are ordered specifically such that more restrictive attributes are 1083 at lower bit positions. This fact is known by the C++ tm attribute 1084 inheritance code such that least bit extraction (mask & -mask) results 1085 in the most restrictive attribute. */ 1086 #define TM_ATTR_SAFE 1 1087 #define TM_ATTR_CALLABLE 2 1088 #define TM_ATTR_PURE 4 1089 #define TM_ATTR_IRREVOCABLE 8 1090 #define TM_ATTR_MAY_CANCEL_OUTER 16 1091 1092 extern int tm_attr_to_mask (tree); 1093 extern tree tm_mask_to_attr (int); 1094 extern tree find_tm_attribute (tree); 1095 1096 /* A suffix-identifier value doublet that represents user-defined literals 1097 for C++-0x. */ 1098 struct GTY(()) tree_userdef_literal { 1099 struct tree_base base; 1100 tree suffix_id; 1101 tree value; 1102 tree num_string; 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_NUM_STRING(NODE) \ 1112 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) 1113 1114 #define USERDEF_LITERAL_TYPE(NODE) \ 1115 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) 1116 1117 extern tree build_userdef_literal (tree suffix_id, tree value, tree num_string); 1118 1119 #endif /* ! GCC_C_COMMON_H */ 1120