1/* Definitions for c-common.c. 2 Copyright (C) 1987-2015 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along 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 "hashtab.h" 27#include "hash-set.h" 28#include "machmode.h" 29#include "input.h" 30#include "statistics.h" 31#include "vec.h" 32#include "double-int.h" 33#include "real.h" 34#include "fixed-value.h" 35#include "alias.h" 36#include "flags.h" 37#include "symtab.h" 38#include "wide-int.h" 39#include "inchash.h" 40#include "tree.h" 41#include "fold-const.h" 42 43/* In order for the format checking to accept the C frontend 44 diagnostic framework extensions, you must include this file before 45 diagnostic-core.h, not after. The C front end formats are a subset of those 46 for C++, so they are the appropriate set to use in common code; 47 cp-tree.h overrides this for C++. */ 48#if defined(GCC_DIAGNOSTIC_CORE_H) 49#error \ 50In order for the format checking to accept the C front end diagnostic \ 51framework extensions, you must include this file before diagnostic-core.h \ 52never after. 53#endif 54#ifndef GCC_DIAG_STYLE 55#define GCC_DIAG_STYLE __gcc_cdiag__ 56#endif 57#include "diagnostic-core.h" 58 59/* Usage of TREE_LANG_FLAG_?: 60 0: IDENTIFIER_MARKED (used by search routines). 61 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) 62 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) 63 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) 64 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) 65 2: unused 66 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) 67 4: unused 68*/ 69 70/* Reserved identifiers. This is the union of all the keywords for C, 71 C++, and Objective-C. All the type modifiers have to be in one 72 block at the beginning, because they are used as mask bits. There 73 are 28 type modifiers; if we add many more we will have to redesign 74 the mask mechanism. */ 75 76enum rid 77{ 78 /* Modifiers: */ 79 /* C, in empirical order of frequency. */ 80 RID_STATIC = 0, 81 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, 82 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, 83 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, 84 RID_NORETURN, RID_ATOMIC, 85 86 /* C extensions */ 87 RID_COMPLEX, RID_THREAD, RID_SAT, 88 89 /* C++ */ 90 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, 91 92 /* ObjC ("PQ" reserved words - they do not appear after a '@' and 93 are keywords only in specific contexts) */ 94 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, 95 96 /* ObjC ("PATTR" reserved words - they do not appear after a '@' 97 and are keywords only as property attributes) */ 98 RID_GETTER, RID_SETTER, 99 RID_READONLY, RID_READWRITE, 100 RID_ASSIGN, RID_RETAIN, RID_COPY, 101 RID_NONATOMIC, 102 103 /* C (reserved and imaginary types not implemented, so any use is a 104 syntax error) */ 105 RID_IMAGINARY, 106 107 /* C */ 108 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 109 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 110 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 111 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 112 RID_SIZEOF, 113 114 /* C extensions */ 115 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 116 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 117 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, 118 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 119 RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN, 120 121 /* C11 */ 122 RID_ALIGNAS, RID_GENERIC, 123 124 /* This means to warn that this is a C++ keyword, and then treat it 125 as a normal identifier. */ 126 RID_CXX_COMPAT_WARN, 127 128 /* GNU transactional memory extension */ 129 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, 130 131 /* Too many ways of getting the name of a function as a string */ 132 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 133 134 /* C++ (some of these are keywords in Objective-C as well, but only 135 if they appear after a '@') */ 136 RID_BOOL, RID_WCHAR, RID_CLASS, 137 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 138 RID_TEMPLATE, RID_NULL, RID_CATCH, 139 RID_DELETE, RID_FALSE, RID_NAMESPACE, 140 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 141 RID_THIS, RID_THROW, RID_TRUE, 142 RID_TRY, RID_TYPENAME, RID_TYPEID, 143 RID_USING, RID_CHAR16, RID_CHAR32, 144 145 /* casts */ 146 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 147 148 /* C++ extensions */ 149 RID_BASES, RID_DIRECT_BASES, 150 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 151 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 152 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 153 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, 154 RID_IS_ABSTRACT, RID_IS_BASE_OF, 155 RID_IS_CLASS, 156 RID_IS_EMPTY, RID_IS_ENUM, 157 RID_IS_FINAL, RID_IS_LITERAL_TYPE, 158 RID_IS_POD, RID_IS_POLYMORPHIC, 159 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 160 RID_IS_TRIVIALLY_ASSIGNABLE, RID_IS_TRIVIALLY_CONSTRUCTIBLE, 161 RID_IS_TRIVIALLY_COPYABLE, 162 RID_IS_UNION, RID_UNDERLYING_TYPE, 163 164 /* C++11 */ 165 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, 166 167 /* Cilk Plus keywords. */ 168 RID_CILK_SPAWN, RID_CILK_SYNC, RID_CILK_FOR, 169 170 /* Objective-C ("AT" reserved words - they are only keywords when 171 they follow '@') */ 172 RID_AT_ENCODE, RID_AT_END, 173 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 174 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, 175 RID_AT_PROTOCOL, RID_AT_SELECTOR, 176 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 177 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 178 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, 179 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, 180 RID_AT_INTERFACE, 181 RID_AT_IMPLEMENTATION, 182 183 /* Named address support, mapping the keyword to a particular named address 184 number. Named address space 0 is reserved for the generic address. If 185 there are more than 254 named addresses, the addr_space_t type will need 186 to be grown from an unsigned char to unsigned short. */ 187 RID_ADDR_SPACE_0, /* generic address */ 188 RID_ADDR_SPACE_1, 189 RID_ADDR_SPACE_2, 190 RID_ADDR_SPACE_3, 191 RID_ADDR_SPACE_4, 192 RID_ADDR_SPACE_5, 193 RID_ADDR_SPACE_6, 194 RID_ADDR_SPACE_7, 195 RID_ADDR_SPACE_8, 196 RID_ADDR_SPACE_9, 197 RID_ADDR_SPACE_10, 198 RID_ADDR_SPACE_11, 199 RID_ADDR_SPACE_12, 200 RID_ADDR_SPACE_13, 201 RID_ADDR_SPACE_14, 202 RID_ADDR_SPACE_15, 203 204 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 205 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 206 207 /* __intN keywords. The _N_M here doesn't correspond to the intN 208 in the keyword; use the bitsize in int_n_t_data_t[M] for that. 209 For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0 210 is for __int13. */ 211 212 /* Note that the range to use is RID_FIRST_INT_N through 213 RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.c has a list of 214 all RID_INT_N_* in a case statement. */ 215 216 RID_INT_N_0, 217 RID_INT_N_1, 218 RID_INT_N_2, 219 RID_INT_N_3, 220 221 RID_FIRST_INT_N = RID_INT_N_0, 222 RID_LAST_INT_N = RID_INT_N_3, 223 224 RID_MAX, 225 226 RID_FIRST_MODIFIER = RID_STATIC, 227 RID_LAST_MODIFIER = RID_ONEWAY, 228 229 RID_FIRST_CXX0X = RID_CONSTEXPR, 230 RID_LAST_CXX0X = RID_STATIC_ASSERT, 231 RID_FIRST_AT = RID_AT_ENCODE, 232 RID_LAST_AT = RID_AT_IMPLEMENTATION, 233 RID_FIRST_PQ = RID_IN, 234 RID_LAST_PQ = RID_ONEWAY, 235 RID_FIRST_PATTR = RID_GETTER, 236 RID_LAST_PATTR = RID_NONATOMIC 237}; 238 239#define OBJC_IS_AT_KEYWORD(rid) \ 240 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 241 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 242 243#define OBJC_IS_PQ_KEYWORD(rid) \ 244 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 245 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 246 247#define OBJC_IS_PATTR_KEYWORD(rid) \ 248 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ 249 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR) 250 251/* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as 252 'class') which are shared in a subtle way between Objective-C and 253 C++. When the lexer is lexing in Objective-C/Objective-C++, if it 254 finds '@' followed by one of these identifiers (eg, '@class'), it 255 recognizes the whole as an Objective-C keyword. If the identifier 256 is found elsewhere, it follows the rules of the C/C++ language. 257 */ 258#define OBJC_IS_CXX_KEYWORD(rid) \ 259 (rid == RID_CLASS \ 260 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ 261 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) 262 263/* The elements of `ridpointers' are identifier nodes for the reserved 264 type names and storage classes. It is indexed by a RID_... value. */ 265extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 266 267/* Standard named or nameless data types of the C compiler. */ 268 269enum c_tree_index 270{ 271 CTI_CHAR16_TYPE, 272 CTI_CHAR32_TYPE, 273 CTI_WCHAR_TYPE, 274 CTI_UNDERLYING_WCHAR_TYPE, 275 CTI_WINT_TYPE, 276 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 277 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 278 CTI_INTMAX_TYPE, 279 CTI_UINTMAX_TYPE, 280 CTI_WIDEST_INT_LIT_TYPE, 281 CTI_WIDEST_UINT_LIT_TYPE, 282 283 /* Types for <stdint.h>, that may not be defined on all 284 targets. */ 285 CTI_SIG_ATOMIC_TYPE, 286 CTI_INT8_TYPE, 287 CTI_INT16_TYPE, 288 CTI_INT32_TYPE, 289 CTI_INT64_TYPE, 290 CTI_UINT8_TYPE, 291 CTI_UINT16_TYPE, 292 CTI_UINT32_TYPE, 293 CTI_UINT64_TYPE, 294 CTI_INT_LEAST8_TYPE, 295 CTI_INT_LEAST16_TYPE, 296 CTI_INT_LEAST32_TYPE, 297 CTI_INT_LEAST64_TYPE, 298 CTI_UINT_LEAST8_TYPE, 299 CTI_UINT_LEAST16_TYPE, 300 CTI_UINT_LEAST32_TYPE, 301 CTI_UINT_LEAST64_TYPE, 302 CTI_INT_FAST8_TYPE, 303 CTI_INT_FAST16_TYPE, 304 CTI_INT_FAST32_TYPE, 305 CTI_INT_FAST64_TYPE, 306 CTI_UINT_FAST8_TYPE, 307 CTI_UINT_FAST16_TYPE, 308 CTI_UINT_FAST32_TYPE, 309 CTI_UINT_FAST64_TYPE, 310 CTI_INTPTR_TYPE, 311 CTI_UINTPTR_TYPE, 312 313 CTI_CHAR_ARRAY_TYPE, 314 CTI_CHAR16_ARRAY_TYPE, 315 CTI_CHAR32_ARRAY_TYPE, 316 CTI_WCHAR_ARRAY_TYPE, 317 CTI_STRING_TYPE, 318 CTI_CONST_STRING_TYPE, 319 320 /* Type for boolean expressions (bool in C++, int in C). */ 321 CTI_TRUTHVALUE_TYPE, 322 CTI_TRUTHVALUE_TRUE, 323 CTI_TRUTHVALUE_FALSE, 324 325 CTI_DEFAULT_FUNCTION_TYPE, 326 327 /* These are not types, but we have to look them up all the time. */ 328 CTI_FUNCTION_NAME_DECL, 329 CTI_PRETTY_FUNCTION_NAME_DECL, 330 CTI_C99_FUNCTION_NAME_DECL, 331 CTI_SAVED_FUNCTION_NAME_DECLS, 332 333 CTI_NULL, 334 335 CTI_MAX 336}; 337 338#define C_CPP_HASHNODE(id) \ 339 (&(((struct c_common_identifier *) (id))->node)) 340#define C_RID_CODE(id) \ 341 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 342#define C_SET_RID_CODE(id, code) \ 343 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 344 345/* Identifier part common to the C front ends. Inherits from 346 tree_identifier, despite appearances. */ 347struct GTY(()) c_common_identifier { 348 struct tree_common common; 349 struct cpp_hashnode node; 350}; 351 352/* An entry in the reserved keyword table. */ 353 354struct c_common_resword 355{ 356 const char *const word; 357 ENUM_BITFIELD(rid) const rid : 16; 358 const unsigned int disable : 16; 359}; 360 361/* Mode used to build pointers (VOIDmode means ptr_mode). */ 362 363extern machine_mode c_default_pointer_mode; 364 365/* Extra cpp_ttype values for C++. */ 366 367/* A token type for template-ids. If a template-id is processed while 368 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; 369 the value of the CPP_TEMPLATE_ID is whatever was returned by 370 cp_parser_template_id. */ 371#define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) 372 373/* A token type for nested-name-specifiers. If a 374 nested-name-specifier is processed while parsing tentatively, it is 375 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the 376 CPP_NESTED_NAME_SPECIFIER is whatever was returned by 377 cp_parser_nested_name_specifier_opt. */ 378#define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) 379 380/* A token type for pre-parsed C++0x decltype. */ 381#define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) 382 383/* A token type for pre-parsed primary-expression (lambda- or statement-). */ 384#define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1)) 385 386/* The number of token types, including C++-specific ones. */ 387#define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1)) 388 389/* Disable mask. Keywords are disabled if (reswords[i].disable & 390 mask) is _true_. Thus for keywords which are present in all 391 languages the disable field is zero. */ 392 393#define D_CONLY 0x001 /* C only (not in C++). */ 394#define D_CXXONLY 0x002 /* C++ only (not in C). */ 395#define D_C99 0x004 /* In C, C99 only. */ 396#define D_CXX0X 0x008 /* In C++, C++0X only. */ 397#define D_EXT 0x010 /* GCC extension. */ 398#define D_EXT89 0x020 /* GCC extension incorporated in C99. */ 399#define D_ASM 0x040 /* Disabled by -fno-asm. */ 400#define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ 401#define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ 402#define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ 403 404/* The reserved keyword table. */ 405extern const struct c_common_resword c_common_reswords[]; 406 407/* The number of items in the reserved keyword table. */ 408extern const unsigned int num_c_common_reswords; 409 410#define char16_type_node c_global_trees[CTI_CHAR16_TYPE] 411#define char32_type_node c_global_trees[CTI_CHAR32_TYPE] 412#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 413#define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] 414#define wint_type_node c_global_trees[CTI_WINT_TYPE] 415#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 416#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 417#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 418#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 419#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 420#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 421 422#define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] 423#define int8_type_node c_global_trees[CTI_INT8_TYPE] 424#define int16_type_node c_global_trees[CTI_INT16_TYPE] 425#define int32_type_node c_global_trees[CTI_INT32_TYPE] 426#define int64_type_node c_global_trees[CTI_INT64_TYPE] 427#define uint8_type_node c_global_trees[CTI_UINT8_TYPE] 428#define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE] 429#define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] 430#define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] 431#define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] 432#define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] 433#define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] 434#define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] 435#define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] 436#define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] 437#define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] 438#define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] 439#define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] 440#define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] 441#define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] 442#define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] 443#define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] 444#define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] 445#define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] 446#define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] 447#define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] 448#define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] 449 450#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] 451#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] 452#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] 453 454#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 455#define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] 456#define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] 457#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 458#define string_type_node c_global_trees[CTI_STRING_TYPE] 459#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 460 461#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 462 463#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 464#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 465#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 466#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 467 468/* The node for C++ `__null'. */ 469#define null_node c_global_trees[CTI_NULL] 470 471extern GTY(()) tree c_global_trees[CTI_MAX]; 472 473/* In a RECORD_TYPE, a sorted array of the fields of the type, not a 474 tree for size reasons. */ 475struct GTY(()) sorted_fields_type { 476 int len; 477 tree GTY((length ("%h.len"))) elts[1]; 478}; 479 480/* Mark which labels are explicitly declared. 481 These may be shadowed, and may be referenced from nested functions. */ 482#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 483 484typedef enum c_language_kind 485{ 486 clk_c = 0, /* C90, C94, C99 or C11 */ 487 clk_objc = 1, /* clk_c with ObjC features. */ 488 clk_cxx = 2, /* ANSI/ISO C++ */ 489 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 490} 491c_language_kind; 492 493/* To test for a specific language use c_language, defined by each 494 front end. For "ObjC features" or "not C++" use the macros. */ 495extern c_language_kind c_language; 496 497#define c_dialect_cxx() ((c_language & clk_cxx) != 0) 498#define c_dialect_objc() ((c_language & clk_objc) != 0) 499 500/* The various name of operator that appears in error messages. */ 501typedef enum ref_operator { 502 /* NULL */ 503 RO_NULL, 504 /* array indexing */ 505 RO_ARRAY_INDEXING, 506 /* unary * */ 507 RO_UNARY_STAR, 508 /* -> */ 509 RO_ARROW, 510 /* implicit conversion */ 511 RO_IMPLICIT_CONVERSION, 512 /* ->* */ 513 RO_ARROW_STAR 514} ref_operator; 515 516/* Information about a statement tree. */ 517 518struct GTY(()) stmt_tree_s { 519 /* A stack of statement lists being collected. */ 520 vec<tree, va_gc> *x_cur_stmt_list; 521 522 /* In C++, Nonzero if we should treat statements as full 523 expressions. In particular, this variable is non-zero if at the 524 end of a statement we should destroy any temporaries created 525 during that statement. Similarly, if, at the end of a block, we 526 should destroy any local variables in this block. Normally, this 527 variable is nonzero, since those are the normal semantics of 528 C++. 529 530 This flag has no effect in C. */ 531 int stmts_are_full_exprs_p; 532}; 533 534typedef struct stmt_tree_s *stmt_tree; 535 536/* Global state pertinent to the current function. Some C dialects 537 extend this structure with additional fields. */ 538 539struct GTY(()) c_language_function { 540 /* While we are parsing the function, this contains information 541 about the statement-tree that we are building. */ 542 struct stmt_tree_s x_stmt_tree; 543 544 /* Vector of locally defined typedefs, for 545 -Wunused-local-typedefs. */ 546 vec<tree, va_gc> *local_typedefs; 547}; 548 549#define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) 550 551/* When building a statement-tree, this is the current statement list 552 being collected. */ 553#define cur_stmt_list (stmt_list_stack->last ()) 554 555#define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) 556 557/* Language-specific hooks. */ 558 559/* If non-NULL, this function is called after a precompile header file 560 is loaded. */ 561extern void (*lang_post_pch_load) (void); 562 563extern void push_file_scope (void); 564extern void pop_file_scope (void); 565extern stmt_tree current_stmt_tree (void); 566extern tree push_stmt_list (void); 567extern tree pop_stmt_list (tree); 568extern tree add_stmt (tree); 569extern void push_cleanup (tree, tree, bool); 570extern tree pushdecl_top_level (tree); 571extern tree pushdecl (tree); 572extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 573 location_t, tree, tree); 574extern tree build_array_notation_expr (location_t, tree, tree, enum tree_code, 575 location_t, tree, tree); 576extern tree build_array_notation_ref (location_t, tree, tree, tree, tree, tree); 577extern tree build_indirect_ref (location_t, tree, ref_operator); 578 579extern int field_decl_cmp (const void *, const void *); 580extern void resort_sorted_fields (void *, void *, gt_pointer_operator, 581 void *); 582extern bool has_c_linkage (const_tree decl); 583 584/* Switches common to the C front ends. */ 585 586/* Nonzero means don't output line number information. */ 587 588extern char flag_no_line_commands; 589 590/* Nonzero causes -E output not to be done, but directives such as 591 #define that have side effects are still obeyed. */ 592 593extern char flag_no_output; 594 595/* Nonzero means dump macros in some fashion; contains the 'D', 'M', 596 'N' or 'U' of the command line switch. */ 597 598extern char flag_dump_macros; 599 600/* Nonzero means pass #include lines through to the output. */ 601 602extern char flag_dump_includes; 603 604/* Nonzero means process PCH files while preprocessing. */ 605 606extern bool flag_pch_preprocess; 607 608/* The file name to which we should write a precompiled header, or 609 NULL if no header will be written in this compile. */ 610 611extern const char *pch_file; 612 613/* Nonzero if an ISO standard was selected. It rejects macros in the 614 user's namespace. */ 615 616extern int flag_iso; 617 618/* C/ObjC language option variables. */ 619 620 621/* Nonzero means allow type mismatches in conditional expressions; 622 just make their values `void'. */ 623 624extern int flag_cond_mismatch; 625 626/* Nonzero means enable C89 Amendment 1 features. */ 627 628extern int flag_isoc94; 629 630/* Nonzero means use the ISO C99 (or C11) dialect of C. */ 631 632extern int flag_isoc99; 633 634/* Nonzero means use the ISO C11 dialect of C. */ 635 636extern int flag_isoc11; 637 638/* Nonzero means that we have builtin functions, and main is an int. */ 639 640extern int flag_hosted; 641 642/* ObjC language option variables. */ 643 644 645/* Tells the compiler that this is a special run. Do not perform any 646 compiling, instead we are to test some platform dependent features 647 and output a C header file with appropriate definitions. */ 648 649extern int print_struct_values; 650 651/* Tells the compiler what is the constant string class for ObjC. */ 652 653extern const char *constant_string_class_name; 654 655 656/* C++ language option variables. */ 657 658 659/* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is 660 less than N and the other is at least N, for use by -Wabi. */ 661#define abi_version_crosses(N) \ 662 (abi_version_at_least(N) \ 663 != (flag_abi_compat_version == 0 \ 664 || flag_abi_compat_version >= (N))) 665 666/* Nonzero means generate separate instantiation control files and 667 juggle them at link time. */ 668 669extern int flag_use_repository; 670 671/* The supported C++ dialects. */ 672 673enum cxx_dialect { 674 /* C++98 with TC1 */ 675 cxx98, 676 cxx03 = cxx98, 677 /* C++11 */ 678 cxx0x, 679 cxx11 = cxx0x, 680 /* C++14 */ 681 cxx14, 682 /* C++1z (C++17?) */ 683 cxx1z 684}; 685 686/* The C++ dialect being used. C++98 is the default. */ 687extern enum cxx_dialect cxx_dialect; 688 689/* Maximum template instantiation depth. This limit is rather 690 arbitrary, but it exists to limit the time it takes to notice 691 excessively recursive template instantiations. */ 692 693extern int max_tinst_depth; 694 695/* Nonzero means that we should not issue warnings about problems that 696 occur when the code is executed, because the code being processed 697 is not expected to be executed. This is set during parsing. This 698 is used for cases like sizeof() and "0 ? a : b". This is a count, 699 not a bool, because unexecuted expressions can nest. */ 700 701extern int c_inhibit_evaluation_warnings; 702 703/* Whether lexing has been completed, so subsequent preprocessor 704 errors should use the compiler's input_location. */ 705 706extern bool done_lexing; 707 708/* C types are partitioned into three subsets: object, function, and 709 incomplete types. */ 710#define C_TYPE_OBJECT_P(type) \ 711 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 712 713#define C_TYPE_INCOMPLETE_P(type) \ 714 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 715 716#define C_TYPE_FUNCTION_P(type) \ 717 (TREE_CODE (type) == FUNCTION_TYPE) 718 719/* For convenience we define a single macro to identify the class of 720 object or incomplete types. */ 721#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 722 (!C_TYPE_FUNCTION_P (type)) 723 724struct visibility_flags 725{ 726 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ 727 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ 728}; 729 730/* These enumerators are possible types of unsafe conversions. 731 SAFE_CONVERSION The conversion is safe 732 UNSAFE_OTHER Another type of conversion with problems 733 UNSAFE_SIGN Conversion between signed and unsigned integers 734 which are all warned about immediately, so this is unused 735 UNSAFE_REAL Conversions that reduce the precision of reals 736 including conversions from reals to integers 737 */ 738enum conversion_safety { SAFE_CONVERSION = 0, UNSAFE_OTHER, UNSAFE_SIGN, UNSAFE_REAL }; 739 740/* Global visibility options. */ 741extern struct visibility_flags visibility_options; 742 743/* Attribute table common to the C front ends. */ 744extern const struct attribute_spec c_common_attribute_table[]; 745extern const struct attribute_spec c_common_format_attribute_table[]; 746 747/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 748 ID is the identifier to use, NAME is the string. 749 TYPE_DEP indicates whether it depends on type of the function or not 750 (i.e. __PRETTY_FUNCTION__). */ 751 752extern tree (*make_fname_decl) (location_t, tree, int); 753 754/* In c-decl.c and cp/tree.c. FIXME. */ 755extern void c_register_addr_space (const char *str, addr_space_t as); 756 757/* In c-common.c. */ 758extern bool in_late_binary_op; 759extern const char *c_addr_space_name (addr_space_t as); 760extern tree identifier_global_value (tree); 761extern tree c_linkage_bindings (tree); 762extern void record_builtin_type (enum rid, const char *, tree); 763extern tree build_void_list_node (void); 764extern void start_fname_decls (void); 765extern void finish_fname_decls (void); 766extern const char *fname_as_string (int); 767extern tree fname_decl (location_t, unsigned, tree); 768 769extern int check_user_alignment (const_tree, bool); 770extern void check_function_arguments (const_tree, int, tree *); 771extern void check_function_arguments_recurse (void (*) 772 (void *, tree, 773 unsigned HOST_WIDE_INT), 774 void *, tree, 775 unsigned HOST_WIDE_INT); 776extern bool check_builtin_function_arguments (tree, int, tree *); 777extern void check_function_format (tree, int, tree *); 778extern tree handle_format_attribute (tree *, tree, tree, int, bool *); 779extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 780extern bool attribute_takes_identifier_p (const_tree); 781extern bool c_common_handle_option (size_t, const char *, int, int, location_t, 782 const struct cl_option_handlers *); 783extern bool default_handle_c_option (size_t, const char *, int); 784extern tree c_common_type_for_mode (machine_mode, int); 785extern tree c_common_type_for_size (unsigned int, int); 786extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, 787 int, int); 788extern tree c_common_unsigned_type (tree); 789extern tree c_common_signed_type (tree); 790extern tree c_common_signed_or_unsigned_type (int, tree); 791extern void c_common_init_ts (void); 792extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); 793extern enum conversion_safety unsafe_conversion_p (location_t, tree, tree, 794 bool); 795extern bool decl_with_nonnull_addr_p (const_tree); 796extern tree c_fully_fold (tree, bool, bool *); 797extern tree decl_constant_value_for_optimization (tree); 798extern tree c_wrap_maybe_const (tree, bool); 799extern tree c_save_expr (tree); 800extern tree c_common_truthvalue_conversion (location_t, tree); 801extern void c_apply_type_quals_to_decl (int, tree); 802extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int); 803extern tree c_alignof_expr (location_t, tree); 804/* Print an error message for invalid operands to arith operation CODE. 805 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 806extern void binary_op_error (location_t, enum tree_code, tree, tree); 807extern tree fix_string_type (tree); 808extern void constant_expression_warning (tree); 809extern void constant_expression_error (tree); 810extern bool strict_aliasing_warning (tree, tree, tree); 811extern void sizeof_pointer_memaccess_warning (location_t *, tree, 812 vec<tree, va_gc> *, tree *, 813 bool (*) (tree, tree)); 814extern void warnings_for_convert_and_check (location_t, tree, tree, tree); 815extern tree convert_and_check (location_t, tree, tree); 816extern void overflow_warning (location_t, tree); 817extern bool warn_if_unused_value (const_tree, location_t); 818extern void warn_logical_operator (location_t, enum tree_code, tree, 819 enum tree_code, tree, enum tree_code, tree); 820extern void warn_logical_not_parentheses (location_t, enum tree_code, tree); 821extern void check_main_parameter_types (tree decl); 822extern bool c_determine_visibility (tree); 823extern bool vector_types_compatible_elements_p (tree, tree); 824extern void mark_valid_location_for_stdc_pragma (bool); 825extern bool valid_location_for_stdc_pragma_p (void); 826extern void set_float_const_decimal64 (void); 827extern void clear_float_const_decimal64 (void); 828extern bool float_const_decimal64_p (void); 829 830extern bool keyword_begins_type_specifier (enum rid); 831extern bool keyword_is_storage_class_specifier (enum rid); 832extern bool keyword_is_type_qualifier (enum rid); 833extern bool keyword_is_decl_specifier (enum rid); 834extern bool cxx_fundamental_alignment_p (unsigned); 835extern bool pointer_to_zero_sized_aggr_p (tree); 836 837#define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1) 838#define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1) 839 840/* Subroutine of build_binary_op, used for certain operations. */ 841extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 842 843/* Subroutine of build_binary_op, used for comparison operations. 844 See if the operands have both been converted from subword integer types 845 and, if so, perhaps change them both back to their original type. */ 846extern tree shorten_compare (location_t, tree *, tree *, tree *, 847 enum tree_code *); 848 849extern tree pointer_int_sum (location_t, enum tree_code, tree, tree, 850 bool = true); 851 852/* Add qualifiers to a type, in the fashion for C. */ 853extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0); 854 855/* Build tree nodes and builtin functions common to both C and C++ language 856 frontends. */ 857extern void c_common_nodes_and_builtins (void); 858 859extern void disable_builtin_function (const char *); 860 861extern void set_compound_literal_name (tree decl); 862 863extern tree build_va_arg (location_t, tree, tree); 864 865extern const unsigned int c_family_lang_mask; 866extern unsigned int c_common_option_lang_mask (void); 867extern void c_common_diagnostics_set_defaults (diagnostic_context *); 868extern bool c_common_complain_wrong_lang_p (const struct cl_option *); 869extern void c_common_init_options_struct (struct gcc_options *); 870extern void c_common_init_options (unsigned int, struct cl_decoded_option *); 871extern bool c_common_post_options (const char **); 872extern bool c_common_init (void); 873extern void c_common_finish (void); 874extern void c_common_parse_file (void); 875extern FILE *get_dump_info (int, int *); 876extern alias_set_type c_common_get_alias_set (tree); 877extern void c_register_builtin_type (tree, const char*); 878extern bool c_promoting_integer_type_p (const_tree); 879extern int self_promoting_args_p (const_tree); 880extern tree strip_pointer_operator (tree); 881extern tree strip_pointer_or_array_types (tree); 882extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 883 884/* This is the basic parsing function. */ 885extern void c_parse_file (void); 886 887extern void warn_for_omitted_condop (location_t, tree); 888 889/* These macros provide convenient access to the various _STMT nodes. */ 890 891/* Nonzero if a given STATEMENT_LIST represents the outermost binding 892 if a statement expression. */ 893#define STATEMENT_LIST_STMT_EXPR(NODE) \ 894 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 895 896/* Nonzero if a label has been added to the statement list. */ 897#define STATEMENT_LIST_HAS_LABEL(NODE) \ 898 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 899 900/* C_MAYBE_CONST_EXPR accessors. */ 901#define C_MAYBE_CONST_EXPR_PRE(NODE) \ 902 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 903#define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 904 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 905#define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 906 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 907#define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 908 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 909#define EXPR_INT_CONST_OPERANDS(EXPR) \ 910 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 911 && (TREE_CODE (EXPR) == INTEGER_CST \ 912 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 913 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 914 915/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 916#define DECL_C_BIT_FIELD(NODE) \ 917 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 918#define SET_DECL_C_BIT_FIELD(NODE) \ 919 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 920#define CLEAR_DECL_C_BIT_FIELD(NODE) \ 921 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 922 923extern tree do_case (location_t, tree, tree); 924extern tree build_stmt (location_t, enum tree_code, ...); 925extern tree build_real_imag_expr (location_t, enum tree_code, tree); 926 927/* These functions must be defined by each front-end which implements 928 a variant of the C language. They are used in c-common.c. */ 929 930extern tree build_unary_op (location_t, enum tree_code, tree, int); 931extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); 932extern tree perform_integral_promotions (tree); 933 934/* These functions must be defined by each front-end which implements 935 a variant of the C language. They are used by port files. */ 936 937extern tree default_conversion (tree); 938 939/* Given two integer or real types, return the type for their sum. 940 Given two compatible ANSI C types, returns the merged type. */ 941 942extern tree common_type (tree, tree); 943 944extern tree decl_constant_value (tree); 945 946/* Handle increment and decrement of boolean types. */ 947extern tree boolean_increment (enum tree_code, tree); 948 949extern int case_compare (splay_tree_key, splay_tree_key); 950 951extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree); 952 953extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); 954 955extern tree build_function_call (location_t, tree, tree); 956 957extern tree build_function_call_vec (location_t, vec<location_t>, tree, 958 vec<tree, va_gc> *, vec<tree, va_gc> *); 959 960extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *); 961 962extern tree finish_label_address_expr (tree, location_t); 963 964/* Same function prototype, but the C and C++ front ends have 965 different implementations. Used in c-common.c. */ 966extern tree lookup_label (tree); 967extern tree lookup_name (tree); 968extern bool lvalue_p (const_tree); 969 970extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 971extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 972extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true); 973 974extern void init_c_lex (void); 975 976extern void c_cpp_builtins (cpp_reader *); 977extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 978extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int, 979 const char *, va_list *) 980 ATTRIBUTE_GCC_DIAG(6,0); 981extern int c_common_has_attribute (cpp_reader *); 982 983extern bool parse_optimize_options (tree, bool); 984 985/* Positive if an implicit `extern "C"' scope has just been entered; 986 negative if such a scope has just been exited. */ 987extern GTY(()) int pending_lang_change; 988 989/* Information recorded about each file examined during compilation. */ 990 991struct c_fileinfo 992{ 993 int time; /* Time spent in the file. */ 994 995 /* Flags used only by C++. 996 INTERFACE_ONLY nonzero means that we are in an "interface" section 997 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 998 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 999 INTERFACE_ONLY is zero, it means that we are responsible for 1000 exporting definitions that others might need. */ 1001 short interface_only; 1002 short interface_unknown; 1003}; 1004 1005struct c_fileinfo *get_fileinfo (const char *); 1006extern void dump_time_statistics (void); 1007 1008extern bool c_dump_tree (void *, tree); 1009 1010extern void verify_sequence_points (tree); 1011 1012extern tree fold_offsetof_1 (tree); 1013extern tree fold_offsetof (tree); 1014 1015/* Places where an lvalue, or modifiable lvalue, may be required. 1016 Used to select diagnostic messages in lvalue_error and 1017 readonly_error. */ 1018enum lvalue_use { 1019 lv_assign, 1020 lv_increment, 1021 lv_decrement, 1022 lv_addressof, 1023 lv_asm 1024}; 1025 1026extern void readonly_error (location_t, tree, enum lvalue_use); 1027extern void lvalue_error (location_t, enum lvalue_use); 1028extern void invalid_indirection_error (location_t, tree, ref_operator); 1029 1030extern int complete_array_type (tree *, tree, bool); 1031 1032extern tree builtin_type_for_size (int, bool); 1033 1034extern void c_common_mark_addressable_vec (tree); 1035 1036extern void warn_array_subscript_with_type_char (location_t, tree); 1037extern void warn_about_parentheses (location_t, 1038 enum tree_code, 1039 enum tree_code, tree, 1040 enum tree_code, tree); 1041extern void warn_for_unused_label (tree label); 1042extern void warn_for_div_by_zero (location_t, tree divisor); 1043extern void warn_for_sign_compare (location_t, 1044 tree orig_op0, tree orig_op1, 1045 tree op0, tree op1, 1046 tree result_type, 1047 enum tree_code resultcode); 1048extern void do_warn_double_promotion (tree, tree, tree, const char *, 1049 location_t); 1050extern void set_underlying_type (tree); 1051extern void record_types_used_by_current_var_decl (tree); 1052extern void record_locally_defined_typedef (tree); 1053extern void maybe_record_typedef_use (tree); 1054extern void maybe_warn_unused_local_typedefs (void); 1055extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree); 1056extern vec<tree, va_gc> *make_tree_vector (void); 1057extern void release_tree_vector (vec<tree, va_gc> *); 1058extern vec<tree, va_gc> *make_tree_vector_single (tree); 1059extern vec<tree, va_gc> *make_tree_vector_from_list (tree); 1060extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); 1061 1062/* Used for communication between c_common_type_for_mode and 1063 c_register_builtin_type. */ 1064extern GTY(()) tree registered_builtin_types; 1065 1066/* In c-gimplify.c */ 1067extern void c_genericize (tree); 1068extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1069extern tree c_build_bind_expr (location_t, tree, tree); 1070 1071/* In c-pch.c */ 1072extern void pch_init (void); 1073extern void pch_cpp_save_state (void); 1074extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1075extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1076 const char *orig); 1077extern void c_common_write_pch (void); 1078extern void c_common_no_more_pch (void); 1079extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1080 1081/* In *-checksum.c */ 1082extern const unsigned char executable_checksum[16]; 1083 1084/* In c-cppbuiltin.c */ 1085extern void builtin_define_std (const char *macro); 1086extern void builtin_define_with_value (const char *, const char *, int); 1087extern void c_stddef_cpp_builtins (void); 1088extern void fe_file_change (const struct line_map *); 1089extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char); 1090 1091/* In c-ppoutput.c */ 1092extern void init_pp_output (FILE *); 1093extern void preprocess_file (cpp_reader *); 1094extern void pp_file_change (const struct line_map *); 1095extern void pp_dir_change (cpp_reader *, const char *); 1096extern bool check_missing_format_attribute (tree, tree); 1097 1098/* In c-omp.c */ 1099#if HOST_BITS_PER_WIDE_INT >= 64 1100typedef unsigned HOST_WIDE_INT omp_clause_mask; 1101# define OMP_CLAUSE_MASK_1 ((omp_clause_mask) 1) 1102#else 1103struct omp_clause_mask 1104{ 1105 inline omp_clause_mask (); 1106 inline omp_clause_mask (unsigned HOST_WIDE_INT l); 1107 inline omp_clause_mask (unsigned HOST_WIDE_INT l, 1108 unsigned HOST_WIDE_INT h); 1109 inline omp_clause_mask &operator &= (omp_clause_mask); 1110 inline omp_clause_mask &operator |= (omp_clause_mask); 1111 inline omp_clause_mask operator ~ () const; 1112 inline omp_clause_mask operator & (omp_clause_mask) const; 1113 inline omp_clause_mask operator | (omp_clause_mask) const; 1114 inline omp_clause_mask operator >> (int); 1115 inline omp_clause_mask operator << (int); 1116 inline bool operator == (omp_clause_mask) const; 1117 inline bool operator != (omp_clause_mask) const; 1118 unsigned HOST_WIDE_INT low, high; 1119}; 1120 1121inline 1122omp_clause_mask::omp_clause_mask () 1123{ 1124} 1125 1126inline 1127omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l) 1128: low (l), high (0) 1129{ 1130} 1131 1132inline 1133omp_clause_mask::omp_clause_mask (unsigned HOST_WIDE_INT l, 1134 unsigned HOST_WIDE_INT h) 1135: low (l), high (h) 1136{ 1137} 1138 1139inline omp_clause_mask & 1140omp_clause_mask::operator &= (omp_clause_mask b) 1141{ 1142 low &= b.low; 1143 high &= b.high; 1144 return *this; 1145} 1146 1147inline omp_clause_mask & 1148omp_clause_mask::operator |= (omp_clause_mask b) 1149{ 1150 low |= b.low; 1151 high |= b.high; 1152 return *this; 1153} 1154 1155inline omp_clause_mask 1156omp_clause_mask::operator ~ () const 1157{ 1158 omp_clause_mask ret (~low, ~high); 1159 return ret; 1160} 1161 1162inline omp_clause_mask 1163omp_clause_mask::operator | (omp_clause_mask b) const 1164{ 1165 omp_clause_mask ret (low | b.low, high | b.high); 1166 return ret; 1167} 1168 1169inline omp_clause_mask 1170omp_clause_mask::operator & (omp_clause_mask b) const 1171{ 1172 omp_clause_mask ret (low & b.low, high & b.high); 1173 return ret; 1174} 1175 1176inline omp_clause_mask 1177omp_clause_mask::operator << (int amount) 1178{ 1179 omp_clause_mask ret; 1180 if (amount >= HOST_BITS_PER_WIDE_INT) 1181 { 1182 ret.low = 0; 1183 ret.high = low << (amount - HOST_BITS_PER_WIDE_INT); 1184 } 1185 else if (amount == 0) 1186 ret = *this; 1187 else 1188 { 1189 ret.low = low << amount; 1190 ret.high = (low >> (HOST_BITS_PER_WIDE_INT - amount)) 1191 | (high << amount); 1192 } 1193 return ret; 1194} 1195 1196inline omp_clause_mask 1197omp_clause_mask::operator >> (int amount) 1198{ 1199 omp_clause_mask ret; 1200 if (amount >= HOST_BITS_PER_WIDE_INT) 1201 { 1202 ret.low = high >> (amount - HOST_BITS_PER_WIDE_INT); 1203 ret.high = 0; 1204 } 1205 else if (amount == 0) 1206 ret = *this; 1207 else 1208 { 1209 ret.low = (high << (HOST_BITS_PER_WIDE_INT - amount)) 1210 | (low >> amount); 1211 ret.high = high >> amount; 1212 } 1213 return ret; 1214} 1215 1216inline bool 1217omp_clause_mask::operator == (omp_clause_mask b) const 1218{ 1219 return low == b.low && high == b.high; 1220} 1221 1222inline bool 1223omp_clause_mask::operator != (omp_clause_mask b) const 1224{ 1225 return low != b.low || high != b.high; 1226} 1227 1228# define OMP_CLAUSE_MASK_1 omp_clause_mask (1) 1229#endif 1230 1231enum c_omp_clause_split 1232{ 1233 C_OMP_CLAUSE_SPLIT_TARGET = 0, 1234 C_OMP_CLAUSE_SPLIT_TEAMS, 1235 C_OMP_CLAUSE_SPLIT_DISTRIBUTE, 1236 C_OMP_CLAUSE_SPLIT_PARALLEL, 1237 C_OMP_CLAUSE_SPLIT_FOR, 1238 C_OMP_CLAUSE_SPLIT_SIMD, 1239 C_OMP_CLAUSE_SPLIT_COUNT, 1240 C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR 1241}; 1242 1243extern tree c_finish_omp_master (location_t, tree); 1244extern tree c_finish_omp_taskgroup (location_t, tree); 1245extern tree c_finish_omp_critical (location_t, tree, tree); 1246extern tree c_finish_omp_ordered (location_t, tree); 1247extern void c_finish_omp_barrier (location_t); 1248extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, 1249 tree, tree, tree, tree, tree, bool, bool); 1250extern void c_finish_omp_flush (location_t); 1251extern void c_finish_omp_taskwait (location_t); 1252extern void c_finish_omp_taskyield (location_t); 1253extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree, 1254 tree, tree, tree); 1255extern tree c_finish_oacc_wait (location_t, tree, tree); 1256extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask, 1257 tree, tree *); 1258extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree); 1259extern void c_omp_declare_simd_clauses_to_decls (tree, tree); 1260extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1261 1262/* Return next tree in the chain for chain_next walking of tree nodes. */ 1263static inline tree 1264c_tree_chain_next (tree t) 1265{ 1266 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different 1267 kind of object, never a long chain of nodes. Prefer 1268 TYPE_NEXT_VARIANT for types. */ 1269 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) 1270 return TYPE_NEXT_VARIANT (t); 1271 /* Otherwise, if there is TREE_CHAIN, return it. */ 1272 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) 1273 return TREE_CHAIN (t); 1274 return NULL; 1275} 1276 1277/* Mask used by tm_stmt_attr. */ 1278#define TM_STMT_ATTR_OUTER 2 1279#define TM_STMT_ATTR_ATOMIC 4 1280#define TM_STMT_ATTR_RELAXED 8 1281 1282extern int parse_tm_stmt_attr (tree, int); 1283 1284/* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these 1285 are ordered specifically such that more restrictive attributes are 1286 at lower bit positions. This fact is known by the C++ tm attribute 1287 inheritance code such that least bit extraction (mask & -mask) results 1288 in the most restrictive attribute. */ 1289#define TM_ATTR_SAFE 1 1290#define TM_ATTR_CALLABLE 2 1291#define TM_ATTR_PURE 4 1292#define TM_ATTR_IRREVOCABLE 8 1293#define TM_ATTR_MAY_CANCEL_OUTER 16 1294 1295extern int tm_attr_to_mask (tree); 1296extern tree tm_mask_to_attr (int); 1297extern tree find_tm_attribute (tree); 1298 1299/* A suffix-identifier value doublet that represents user-defined literals 1300 for C++-0x. */ 1301enum overflow_type { 1302 OT_UNDERFLOW = -1, 1303 OT_NONE, 1304 OT_OVERFLOW 1305}; 1306 1307struct GTY(()) tree_userdef_literal { 1308 struct tree_base base; 1309 tree suffix_id; 1310 tree value; 1311 tree num_string; 1312 enum overflow_type overflow; 1313}; 1314 1315#define USERDEF_LITERAL_SUFFIX_ID(NODE) \ 1316 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) 1317 1318#define USERDEF_LITERAL_VALUE(NODE) \ 1319 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) 1320 1321#define USERDEF_LITERAL_OVERFLOW(NODE) \ 1322 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) 1323 1324#define USERDEF_LITERAL_NUM_STRING(NODE) \ 1325 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) 1326 1327#define USERDEF_LITERAL_TYPE(NODE) \ 1328 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) 1329 1330extern tree build_userdef_literal (tree suffix_id, tree value, 1331 enum overflow_type overflow, 1332 tree num_string); 1333 1334extern bool convert_vector_to_pointer_for_subscript (location_t, tree *, tree); 1335 1336/* Possibe cases of scalar_to_vector conversion. */ 1337enum stv_conv { 1338 stv_error, /* Error occurred. */ 1339 stv_nothing, /* Nothing happened. */ 1340 stv_firstarg, /* First argument must be expanded. */ 1341 stv_secondarg /* Second argument must be expanded. */ 1342}; 1343 1344extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, 1345 tree op0, tree op1, bool); 1346 1347/* In c-cilkplus.c */ 1348extern tree c_finish_cilk_clauses (tree); 1349extern tree c_validate_cilk_plus_loop (tree *, int *, void *); 1350extern bool c_check_cilk_loop (location_t, tree); 1351 1352/* These #defines allow users to access different operands of the 1353 array notation tree. */ 1354 1355#define ARRAY_NOTATION_CHECK(NODE) TREE_CHECK (NODE, ARRAY_NOTATION_REF) 1356#define ARRAY_NOTATION_ARRAY(NODE) \ 1357 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 0) 1358#define ARRAY_NOTATION_START(NODE) \ 1359 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 1) 1360#define ARRAY_NOTATION_LENGTH(NODE) \ 1361 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 2) 1362#define ARRAY_NOTATION_STRIDE(NODE) \ 1363 TREE_OPERAND (ARRAY_NOTATION_CHECK (NODE), 3) 1364 1365/* This structure holds all the scalar values and its appropriate variable 1366 replacment. It is mainly used by the function that pulls all the invariant 1367 parts that should be executed only once, which comes with array notation 1368 expressions. */ 1369struct inv_list 1370{ 1371 vec<tree, va_gc> *list_values; 1372 vec<tree, va_gc> *replacement; 1373 vec<enum tree_code, va_gc> *additional_tcodes; 1374}; 1375 1376/* This structure holds all the important components that can be extracted 1377 from an ARRAY_NOTATION_REF expression. It is used to pass array notation 1378 information between the functions that are responsible for expansion. */ 1379typedef struct cilkplus_an_parts 1380{ 1381 tree value; 1382 tree start; 1383 tree length; 1384 tree stride; 1385 bool is_vector; 1386} an_parts; 1387 1388/* This structure holds the components necessary to create the loop around 1389 the ARRAY_REF that is created using the ARRAY_NOTATION information. */ 1390 1391typedef struct cilkplus_an_loop_parts 1392{ 1393 tree var; /* Loop induction variable. */ 1394 tree incr; /* Loop increment/decrement expression. */ 1395 tree cmp; /* Loop condition. */ 1396 tree ind_init; /* Initialization of the loop induction variable. */ 1397} an_loop_parts; 1398 1399/* In array-notation-common.c. */ 1400extern HOST_WIDE_INT extract_sec_implicit_index_arg (location_t, tree); 1401extern bool is_sec_implicit_index_fn (tree); 1402extern void array_notation_init_builtins (void); 1403extern struct c_expr fix_array_notation_expr (location_t, enum tree_code, 1404 struct c_expr); 1405extern bool contains_array_notation_expr (tree); 1406extern tree expand_array_notation_exprs (tree); 1407extern tree fix_conditional_array_notations (tree); 1408extern tree find_correct_array_notation_type (tree); 1409extern bool length_mismatch_in_expr_p (location_t, vec<vec<an_parts> >); 1410extern enum built_in_function is_cilkplus_reduce_builtin (tree); 1411extern bool find_rank (location_t, tree, tree, bool, size_t *); 1412extern void extract_array_notation_exprs (tree, bool, vec<tree, va_gc> **); 1413extern void replace_array_notations (tree *, bool, vec<tree, va_gc> *, 1414 vec<tree, va_gc> *); 1415extern tree find_inv_trees (tree *, int *, void *); 1416extern tree replace_inv_trees (tree *, int *, void *); 1417extern tree find_correct_array_notation_type (tree op); 1418extern void cilkplus_extract_an_triplets (vec<tree, va_gc> *, size_t, size_t, 1419 vec<vec<an_parts> > *); 1420extern vec <tree, va_gc> *fix_sec_implicit_args 1421 (location_t, vec <tree, va_gc> *, vec<an_loop_parts>, size_t, tree); 1422 1423/* In cilk.c. */ 1424extern tree insert_cilk_frame (tree); 1425extern void cilk_init_builtins (void); 1426extern int gimplify_cilk_spawn (tree *); 1427extern void cilk_install_body_with_frame_cleanup (tree, tree, void *); 1428extern bool cilk_detect_spawn_and_unwrap (tree *); 1429extern bool cilk_set_spawn_marker (location_t, tree); 1430extern tree build_cilk_sync (void); 1431extern tree build_cilk_spawn (location_t, tree); 1432extern tree make_cilk_frame (tree); 1433extern tree create_cilk_function_exit (tree, bool, bool); 1434extern tree cilk_install_body_pedigree_operations (tree); 1435extern void cilk_outline (tree, tree *, void *); 1436extern bool contains_cilk_spawn_stmt (tree); 1437extern tree cilk_for_number_of_iterations (tree); 1438extern bool check_no_cilk (tree, const char *, const char *, 1439 location_t loc = UNKNOWN_LOCATION); 1440#endif /* ! GCC_C_COMMON_H */ 1441