1 /* Core data structures for the 'tree' type. 2 Copyright (C) 1989-2016 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_TREE_CORE_H 21 #define GCC_TREE_CORE_H 22 23 #include "symtab.h" 24 25 /* This file contains all the data structures that define the 'tree' type. 26 There are no accessor macros nor functions in this file. Only the 27 basic data structures, extern declarations and type definitions. */ 28 29 /*--------------------------------------------------------------------------- 30 Forward type declarations. Mostly to avoid including unnecessary headers 31 ---------------------------------------------------------------------------*/ 32 struct function; 33 struct real_value; 34 struct fixed_value; 35 struct ptr_info_def; 36 struct range_info_def; 37 struct die_struct; 38 39 40 /*--------------------------------------------------------------------------- 41 #defined constants 42 ---------------------------------------------------------------------------*/ 43 /* Nonzero if this is a call to a function whose return value depends 44 solely on its arguments, has no side effects, and does not read 45 global memory. This corresponds to TREE_READONLY for function 46 decls. */ 47 #define ECF_CONST (1 << 0) 48 49 /* Nonzero if this is a call to "pure" function (like const function, 50 but may read memory. This corresponds to DECL_PURE_P for function 51 decls. */ 52 #define ECF_PURE (1 << 1) 53 54 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no 55 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P 56 for function decls.*/ 57 #define ECF_LOOPING_CONST_OR_PURE (1 << 2) 58 59 /* Nonzero if this call will never return. */ 60 #define ECF_NORETURN (1 << 3) 61 62 /* Nonzero if this is a call to malloc or a related function. */ 63 #define ECF_MALLOC (1 << 4) 64 65 /* Nonzero if it is plausible that this is a call to alloca. */ 66 #define ECF_MAY_BE_ALLOCA (1 << 5) 67 68 /* Nonzero if this is a call to a function that won't throw an exception. */ 69 #define ECF_NOTHROW (1 << 6) 70 71 /* Nonzero if this is a call to setjmp or a related function. */ 72 #define ECF_RETURNS_TWICE (1 << 7) 73 74 /* Nonzero if this call replaces the current stack frame. */ 75 #define ECF_SIBCALL (1 << 8) 76 77 /* Function does not read or write memory (but may have side effects, so 78 it does not necessarily fit ECF_CONST). */ 79 #define ECF_NOVOPS (1 << 9) 80 81 /* The function does not lead to calls within current function unit. */ 82 #define ECF_LEAF (1 << 10) 83 84 /* Nonzero if this call does not affect transactions. */ 85 #define ECF_TM_PURE (1 << 11) 86 87 /* Nonzero if this call is into the transaction runtime library. */ 88 #define ECF_TM_BUILTIN (1 << 12) 89 90 /* Call argument flags. */ 91 /* Nonzero if the argument is not dereferenced recursively, thus only 92 directly reachable memory is read or written. */ 93 #define EAF_DIRECT (1 << 0) 94 95 /* Nonzero if memory reached by the argument is not clobbered. */ 96 #define EAF_NOCLOBBER (1 << 1) 97 98 /* Nonzero if the argument does not escape. */ 99 #define EAF_NOESCAPE (1 << 2) 100 101 /* Nonzero if the argument is not used by the function. */ 102 #define EAF_UNUSED (1 << 3) 103 104 /* Call return flags. */ 105 /* Mask for the argument number that is returned. Lower two bits of 106 the return flags, encodes argument slots zero to three. */ 107 #define ERF_RETURN_ARG_MASK (3) 108 109 /* Nonzero if the return value is equal to the argument number 110 flags & ERF_RETURN_ARG_MASK. */ 111 #define ERF_RETURNS_ARG (1 << 2) 112 113 /* Nonzero if the return value does not alias with anything. Functions 114 with the malloc attribute have this set on their return value. */ 115 #define ERF_NOALIAS (1 << 3) 116 117 118 /*--------------------------------------------------------------------------- 119 Enumerations 120 ---------------------------------------------------------------------------*/ 121 /* Codes of tree nodes. */ 122 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM, 123 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE, 124 125 enum tree_code { 126 #include "all-tree.def" 127 MAX_TREE_CODES 128 }; 129 130 #undef DEFTREECODE 131 #undef END_OF_BASE_TREE_CODES 132 133 /* Number of language-independent tree codes. */ 134 #define NUM_TREE_CODES \ 135 ((int) LAST_AND_UNUSED_TREE_CODE) 136 137 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \ 138 (tree_contains_struct[(CODE)][(STRUCT)]) 139 140 141 /* Classify which part of the compiler has defined a given builtin function. 142 Note that we assume below that this is no more than two bits. */ 143 enum built_in_class { 144 NOT_BUILT_IN = 0, 145 BUILT_IN_FRONTEND, 146 BUILT_IN_MD, 147 BUILT_IN_NORMAL 148 }; 149 150 /* Last marker used for LTO stremaing of built_in_class. We can not add it 151 to the enum since we need the enumb to fit in 2 bits. */ 152 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1) 153 154 /* Codes that identify the various built in functions 155 so that expand_call can identify them quickly. */ 156 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM, 157 enum built_in_function { 158 #include "builtins.def" 159 160 BEGIN_CHKP_BUILTINS, 161 162 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) 163 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 164 ENUM##_CHKP = ENUM + BEGIN_CHKP_BUILTINS + 1, 165 #include "builtins.def" 166 167 END_CHKP_BUILTINS = BEGIN_CHKP_BUILTINS * 2 + 1, 168 169 /* Complex division routines in libgcc. These are done via builtins 170 because emit_library_call_value can't handle complex values. */ 171 BUILT_IN_COMPLEX_MUL_MIN, 172 BUILT_IN_COMPLEX_MUL_MAX 173 = BUILT_IN_COMPLEX_MUL_MIN 174 + MAX_MODE_COMPLEX_FLOAT 175 - MIN_MODE_COMPLEX_FLOAT, 176 177 BUILT_IN_COMPLEX_DIV_MIN, 178 BUILT_IN_COMPLEX_DIV_MAX 179 = BUILT_IN_COMPLEX_DIV_MIN 180 + MAX_MODE_COMPLEX_FLOAT 181 - MIN_MODE_COMPLEX_FLOAT, 182 183 /* Upper bound on non-language-specific builtins. */ 184 END_BUILTINS 185 }; 186 187 /* Internal functions. */ 188 enum internal_fn { 189 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE, 190 #include "internal-fn.def" 191 IFN_LAST 192 }; 193 194 /* An enum that combines target-independent built-in functions with 195 internal functions, so that they can be treated in a similar way. 196 The numbers for built-in functions are the same as for the 197 built_in_function enum. The numbers for internal functions 198 start at END_BUITLINS. */ 199 enum combined_fn { 200 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 201 CFN_##ENUM = int (ENUM), 202 #include "builtins.def" 203 204 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) 205 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 206 CFN_##ENUM##_CHKP = int (ENUM##_CHKP), 207 #include "builtins.def" 208 209 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \ 210 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE), 211 #include "internal-fn.def" 212 213 CFN_LAST 214 }; 215 216 /* Tree code classes. Each tree_code has an associated code class 217 represented by a TREE_CODE_CLASS. */ 218 enum tree_code_class { 219 tcc_exceptional, /* An exceptional code (fits no category). */ 220 tcc_constant, /* A constant. */ 221 /* Order of tcc_type and tcc_declaration is important. */ 222 tcc_type, /* A type object code. */ 223 tcc_declaration, /* A declaration (also serving as variable refs). */ 224 tcc_reference, /* A reference to storage. */ 225 tcc_comparison, /* A comparison expression. */ 226 tcc_unary, /* A unary arithmetic expression. */ 227 tcc_binary, /* A binary arithmetic expression. */ 228 tcc_statement, /* A statement expression, which have side effects 229 but usually no interesting value. */ 230 tcc_vl_exp, /* A function call or other expression with a 231 variable-length operand vector. */ 232 tcc_expression /* Any other expression. */ 233 }; 234 235 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into 236 the tables omp_clause_num_ops and omp_clause_code_name. */ 237 enum omp_clause_code { 238 /* Clause zero is special-cased inside the parser 239 (c_parser_omp_variable_list). */ 240 OMP_CLAUSE_ERROR = 0, 241 242 /* OpenACC/OpenMP clause: private (variable_list). */ 243 OMP_CLAUSE_PRIVATE, 244 245 /* OpenMP clause: shared (variable_list). */ 246 OMP_CLAUSE_SHARED, 247 248 /* OpenACC/OpenMP clause: firstprivate (variable_list). */ 249 OMP_CLAUSE_FIRSTPRIVATE, 250 251 /* OpenMP clause: lastprivate (variable_list). */ 252 OMP_CLAUSE_LASTPRIVATE, 253 254 /* OpenACC/OpenMP clause: reduction (operator:variable_list). 255 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator. 256 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var. 257 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var 258 into the shared one. 259 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL 260 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. 261 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy 262 VAR_DECL placeholder, used like the above for C/C++ array 263 reductions. */ 264 OMP_CLAUSE_REDUCTION, 265 266 /* OpenMP clause: copyin (variable_list). */ 267 OMP_CLAUSE_COPYIN, 268 269 /* OpenMP clause: copyprivate (variable_list). */ 270 OMP_CLAUSE_COPYPRIVATE, 271 272 /* OpenMP clause: linear (variable-list[:linear-step]). */ 273 OMP_CLAUSE_LINEAR, 274 275 /* OpenMP clause: aligned (variable-list[:alignment]). */ 276 OMP_CLAUSE_ALIGNED, 277 278 /* OpenMP clause: depend ({in,out,inout}:variable-list). */ 279 OMP_CLAUSE_DEPEND, 280 281 /* OpenMP clause: uniform (argument-list). */ 282 OMP_CLAUSE_UNIFORM, 283 284 /* OpenMP clause: to (extended-list). 285 Only when it appears in declare target. */ 286 OMP_CLAUSE_TO_DECLARE, 287 288 /* OpenMP clause: link (variable-list). */ 289 OMP_CLAUSE_LINK, 290 291 /* OpenMP clause: from (variable-list). */ 292 OMP_CLAUSE_FROM, 293 294 /* OpenMP clause: to (variable-list). */ 295 OMP_CLAUSE_TO, 296 297 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr, 298 device, host (self), present, present_or_copy (pcopy), present_or_copyin 299 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)} 300 (variable-list). 301 302 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */ 303 OMP_CLAUSE_MAP, 304 305 /* OpenACC clause: use_device (variable_list). 306 OpenMP clause: use_device_ptr (variable-list). */ 307 OMP_CLAUSE_USE_DEVICE_PTR, 308 309 /* OpenMP clause: is_device_ptr (variable-list). */ 310 OMP_CLAUSE_IS_DEVICE_PTR, 311 312 /* Internal structure to hold OpenACC cache directive's variable-list. 313 #pragma acc cache (variable-list). */ 314 OMP_CLAUSE__CACHE_, 315 316 /* OpenACC clause: device_resident (variable_list). */ 317 OMP_CLAUSE_DEVICE_RESIDENT, 318 319 /* OpenACC clause: gang [(gang-argument-list)]. 320 Where 321 gang-argument-list: [gang-argument-list, ] gang-argument 322 gang-argument: [num:] integer-expression 323 | static: size-expression 324 size-expression: * | integer-expression. */ 325 OMP_CLAUSE_GANG, 326 327 /* OpenACC clause: async [(integer-expression)]. */ 328 OMP_CLAUSE_ASYNC, 329 330 /* OpenACC clause: wait [(integer-expression-list)]. */ 331 OMP_CLAUSE_WAIT, 332 333 /* OpenACC clause: auto. */ 334 OMP_CLAUSE_AUTO, 335 336 /* OpenACC clause: seq. */ 337 OMP_CLAUSE_SEQ, 338 339 /* Internal clause: temporary for combined loops expansion. */ 340 OMP_CLAUSE__LOOPTEMP_, 341 342 /* OpenACC/OpenMP clause: if (scalar-expression). */ 343 OMP_CLAUSE_IF, 344 345 /* OpenMP clause: num_threads (integer-expression). */ 346 OMP_CLAUSE_NUM_THREADS, 347 348 /* OpenMP clause: schedule. */ 349 OMP_CLAUSE_SCHEDULE, 350 351 /* OpenMP clause: nowait. */ 352 OMP_CLAUSE_NOWAIT, 353 354 /* OpenMP clause: ordered [(constant-integer-expression)]. */ 355 OMP_CLAUSE_ORDERED, 356 357 /* OpenMP clause: default. */ 358 OMP_CLAUSE_DEFAULT, 359 360 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */ 361 OMP_CLAUSE_COLLAPSE, 362 363 /* OpenMP clause: untied. */ 364 OMP_CLAUSE_UNTIED, 365 366 /* OpenMP clause: final (scalar-expression). */ 367 OMP_CLAUSE_FINAL, 368 369 /* OpenMP clause: mergeable. */ 370 OMP_CLAUSE_MERGEABLE, 371 372 /* OpenMP clause: device (integer-expression). */ 373 OMP_CLAUSE_DEVICE, 374 375 /* OpenMP clause: dist_schedule (static[:chunk-size]). */ 376 OMP_CLAUSE_DIST_SCHEDULE, 377 378 /* OpenMP clause: inbranch. */ 379 OMP_CLAUSE_INBRANCH, 380 381 /* OpenMP clause: notinbranch. */ 382 OMP_CLAUSE_NOTINBRANCH, 383 384 /* OpenMP clause: num_teams(integer-expression). */ 385 OMP_CLAUSE_NUM_TEAMS, 386 387 /* OpenMP clause: thread_limit(integer-expression). */ 388 OMP_CLAUSE_THREAD_LIMIT, 389 390 /* OpenMP clause: proc_bind ({master,close,spread}). */ 391 OMP_CLAUSE_PROC_BIND, 392 393 /* OpenMP clause: safelen (constant-integer-expression). */ 394 OMP_CLAUSE_SAFELEN, 395 396 /* OpenMP clause: simdlen (constant-integer-expression). */ 397 OMP_CLAUSE_SIMDLEN, 398 399 /* OpenMP clause: for. */ 400 OMP_CLAUSE_FOR, 401 402 /* OpenMP clause: parallel. */ 403 OMP_CLAUSE_PARALLEL, 404 405 /* OpenMP clause: sections. */ 406 OMP_CLAUSE_SECTIONS, 407 408 /* OpenMP clause: taskgroup. */ 409 OMP_CLAUSE_TASKGROUP, 410 411 /* OpenMP clause: priority (integer-expression). */ 412 OMP_CLAUSE_PRIORITY, 413 414 /* OpenMP clause: grainsize (integer-expression). */ 415 OMP_CLAUSE_GRAINSIZE, 416 417 /* OpenMP clause: num_tasks (integer-expression). */ 418 OMP_CLAUSE_NUM_TASKS, 419 420 /* OpenMP clause: nogroup. */ 421 OMP_CLAUSE_NOGROUP, 422 423 /* OpenMP clause: threads. */ 424 OMP_CLAUSE_THREADS, 425 426 /* OpenMP clause: simd. */ 427 OMP_CLAUSE_SIMD, 428 429 /* OpenMP clause: hint (integer-expression). */ 430 OMP_CLAUSE_HINT, 431 432 /* OpenMP clause: defaultmap (tofrom: scalar). */ 433 OMP_CLAUSE_DEFAULTMAP, 434 435 /* Internally used only clause, holding SIMD uid. */ 436 OMP_CLAUSE__SIMDUID_, 437 438 /* Internally used only clause, holding _Cilk_for # of iterations 439 on OMP_PARALLEL. */ 440 OMP_CLAUSE__CILK_FOR_COUNT_, 441 442 /* OpenACC clause: independent. */ 443 OMP_CLAUSE_INDEPENDENT, 444 445 /* OpenACC clause: worker [( [num:] integer-expression)]. */ 446 OMP_CLAUSE_WORKER, 447 448 /* OpenACC clause: vector [( [length:] integer-expression)]. */ 449 OMP_CLAUSE_VECTOR, 450 451 /* OpenACC clause: num_gangs (integer-expression). */ 452 OMP_CLAUSE_NUM_GANGS, 453 454 /* OpenACC clause: num_workers (integer-expression). */ 455 OMP_CLAUSE_NUM_WORKERS, 456 457 /* OpenACC clause: vector_length (integer-expression). */ 458 OMP_CLAUSE_VECTOR_LENGTH, 459 460 /* OpenACC clause: tile ( size-expr-list ). */ 461 OMP_CLAUSE_TILE, 462 463 /* OpenMP internal-only clause to specify grid dimensions of a gridified 464 kernel. */ 465 OMP_CLAUSE__GRIDDIM_ 466 }; 467 468 #undef DEFTREESTRUCT 469 #define DEFTREESTRUCT(ENUM, NAME) ENUM, 470 enum tree_node_structure_enum { 471 #include "treestruct.def" 472 LAST_TS_ENUM 473 }; 474 #undef DEFTREESTRUCT 475 476 enum omp_clause_schedule_kind { 477 OMP_CLAUSE_SCHEDULE_STATIC, 478 OMP_CLAUSE_SCHEDULE_DYNAMIC, 479 OMP_CLAUSE_SCHEDULE_GUIDED, 480 OMP_CLAUSE_SCHEDULE_AUTO, 481 OMP_CLAUSE_SCHEDULE_RUNTIME, 482 OMP_CLAUSE_SCHEDULE_CILKFOR, 483 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1, 484 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3), 485 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4), 486 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1 487 }; 488 489 enum omp_clause_default_kind { 490 OMP_CLAUSE_DEFAULT_UNSPECIFIED, 491 OMP_CLAUSE_DEFAULT_SHARED, 492 OMP_CLAUSE_DEFAULT_NONE, 493 OMP_CLAUSE_DEFAULT_PRIVATE, 494 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE, 495 OMP_CLAUSE_DEFAULT_LAST 496 }; 497 498 /* There is a TYPE_QUAL value for each type qualifier. They can be 499 combined by bitwise-or to form the complete set of qualifiers for a 500 type. */ 501 enum cv_qualifier { 502 TYPE_UNQUALIFIED = 0x0, 503 TYPE_QUAL_CONST = 0x1, 504 TYPE_QUAL_VOLATILE = 0x2, 505 TYPE_QUAL_RESTRICT = 0x4, 506 TYPE_QUAL_ATOMIC = 0x8 507 }; 508 509 /* Standard named or nameless data types of the C compiler. */ 510 enum tree_index { 511 TI_ERROR_MARK, 512 TI_INTQI_TYPE, 513 TI_INTHI_TYPE, 514 TI_INTSI_TYPE, 515 TI_INTDI_TYPE, 516 TI_INTTI_TYPE, 517 518 TI_UINTQI_TYPE, 519 TI_UINTHI_TYPE, 520 TI_UINTSI_TYPE, 521 TI_UINTDI_TYPE, 522 TI_UINTTI_TYPE, 523 524 TI_ATOMICQI_TYPE, 525 TI_ATOMICHI_TYPE, 526 TI_ATOMICSI_TYPE, 527 TI_ATOMICDI_TYPE, 528 TI_ATOMICTI_TYPE, 529 530 TI_UINT16_TYPE, 531 TI_UINT32_TYPE, 532 TI_UINT64_TYPE, 533 534 TI_VOID, 535 536 TI_INTEGER_ZERO, 537 TI_INTEGER_ONE, 538 TI_INTEGER_THREE, 539 TI_INTEGER_MINUS_ONE, 540 TI_NULL_POINTER, 541 542 TI_SIZE_ZERO, 543 TI_SIZE_ONE, 544 545 TI_BITSIZE_ZERO, 546 TI_BITSIZE_ONE, 547 TI_BITSIZE_UNIT, 548 549 TI_PUBLIC, 550 TI_PROTECTED, 551 TI_PRIVATE, 552 553 TI_BOOLEAN_FALSE, 554 TI_BOOLEAN_TRUE, 555 556 TI_COMPLEX_INTEGER_TYPE, 557 TI_COMPLEX_FLOAT_TYPE, 558 TI_COMPLEX_DOUBLE_TYPE, 559 TI_COMPLEX_LONG_DOUBLE_TYPE, 560 561 TI_FLOAT_TYPE, 562 TI_DOUBLE_TYPE, 563 TI_LONG_DOUBLE_TYPE, 564 565 TI_FLOAT_PTR_TYPE, 566 TI_DOUBLE_PTR_TYPE, 567 TI_LONG_DOUBLE_PTR_TYPE, 568 TI_INTEGER_PTR_TYPE, 569 570 TI_VOID_TYPE, 571 TI_PTR_TYPE, 572 TI_CONST_PTR_TYPE, 573 TI_SIZE_TYPE, 574 TI_PID_TYPE, 575 TI_PTRDIFF_TYPE, 576 TI_VA_LIST_TYPE, 577 TI_VA_LIST_GPR_COUNTER_FIELD, 578 TI_VA_LIST_FPR_COUNTER_FIELD, 579 TI_BOOLEAN_TYPE, 580 TI_FILEPTR_TYPE, 581 TI_POINTER_SIZED_TYPE, 582 583 TI_POINTER_BOUNDS_TYPE, 584 585 TI_DFLOAT32_TYPE, 586 TI_DFLOAT64_TYPE, 587 TI_DFLOAT128_TYPE, 588 TI_DFLOAT32_PTR_TYPE, 589 TI_DFLOAT64_PTR_TYPE, 590 TI_DFLOAT128_PTR_TYPE, 591 592 TI_VOID_LIST_NODE, 593 594 TI_MAIN_IDENTIFIER, 595 596 TI_SAT_SFRACT_TYPE, 597 TI_SAT_FRACT_TYPE, 598 TI_SAT_LFRACT_TYPE, 599 TI_SAT_LLFRACT_TYPE, 600 TI_SAT_USFRACT_TYPE, 601 TI_SAT_UFRACT_TYPE, 602 TI_SAT_ULFRACT_TYPE, 603 TI_SAT_ULLFRACT_TYPE, 604 TI_SFRACT_TYPE, 605 TI_FRACT_TYPE, 606 TI_LFRACT_TYPE, 607 TI_LLFRACT_TYPE, 608 TI_USFRACT_TYPE, 609 TI_UFRACT_TYPE, 610 TI_ULFRACT_TYPE, 611 TI_ULLFRACT_TYPE, 612 TI_SAT_SACCUM_TYPE, 613 TI_SAT_ACCUM_TYPE, 614 TI_SAT_LACCUM_TYPE, 615 TI_SAT_LLACCUM_TYPE, 616 TI_SAT_USACCUM_TYPE, 617 TI_SAT_UACCUM_TYPE, 618 TI_SAT_ULACCUM_TYPE, 619 TI_SAT_ULLACCUM_TYPE, 620 TI_SACCUM_TYPE, 621 TI_ACCUM_TYPE, 622 TI_LACCUM_TYPE, 623 TI_LLACCUM_TYPE, 624 TI_USACCUM_TYPE, 625 TI_UACCUM_TYPE, 626 TI_ULACCUM_TYPE, 627 TI_ULLACCUM_TYPE, 628 TI_QQ_TYPE, 629 TI_HQ_TYPE, 630 TI_SQ_TYPE, 631 TI_DQ_TYPE, 632 TI_TQ_TYPE, 633 TI_UQQ_TYPE, 634 TI_UHQ_TYPE, 635 TI_USQ_TYPE, 636 TI_UDQ_TYPE, 637 TI_UTQ_TYPE, 638 TI_SAT_QQ_TYPE, 639 TI_SAT_HQ_TYPE, 640 TI_SAT_SQ_TYPE, 641 TI_SAT_DQ_TYPE, 642 TI_SAT_TQ_TYPE, 643 TI_SAT_UQQ_TYPE, 644 TI_SAT_UHQ_TYPE, 645 TI_SAT_USQ_TYPE, 646 TI_SAT_UDQ_TYPE, 647 TI_SAT_UTQ_TYPE, 648 TI_HA_TYPE, 649 TI_SA_TYPE, 650 TI_DA_TYPE, 651 TI_TA_TYPE, 652 TI_UHA_TYPE, 653 TI_USA_TYPE, 654 TI_UDA_TYPE, 655 TI_UTA_TYPE, 656 TI_SAT_HA_TYPE, 657 TI_SAT_SA_TYPE, 658 TI_SAT_DA_TYPE, 659 TI_SAT_TA_TYPE, 660 TI_SAT_UHA_TYPE, 661 TI_SAT_USA_TYPE, 662 TI_SAT_UDA_TYPE, 663 TI_SAT_UTA_TYPE, 664 665 TI_OPTIMIZATION_DEFAULT, 666 TI_OPTIMIZATION_CURRENT, 667 TI_TARGET_OPTION_DEFAULT, 668 TI_TARGET_OPTION_CURRENT, 669 TI_CURRENT_TARGET_PRAGMA, 670 TI_CURRENT_OPTIMIZE_PRAGMA, 671 672 TI_MAX 673 }; 674 675 /* An enumeration of the standard C integer types. These must be 676 ordered so that shorter types appear before longer ones, and so 677 that signed types appear before unsigned ones, for the correct 678 functioning of interpret_integer() in c-lex.c. */ 679 enum integer_type_kind { 680 itk_char, 681 itk_signed_char, 682 itk_unsigned_char, 683 itk_short, 684 itk_unsigned_short, 685 itk_int, 686 itk_unsigned_int, 687 itk_long, 688 itk_unsigned_long, 689 itk_long_long, 690 itk_unsigned_long_long, 691 692 itk_intN_0, 693 itk_unsigned_intN_0, 694 itk_intN_1, 695 itk_unsigned_intN_1, 696 itk_intN_2, 697 itk_unsigned_intN_2, 698 itk_intN_3, 699 itk_unsigned_intN_3, 700 701 itk_none 702 }; 703 704 /* A pointer-to-function member type looks like: 705 706 struct { 707 __P __pfn; 708 ptrdiff_t __delta; 709 }; 710 711 If __pfn is NULL, it is a NULL pointer-to-member-function. 712 713 (Because the vtable is always the first thing in the object, we 714 don't need its offset.) If the function is virtual, then PFN is 715 one plus twice the index into the vtable; otherwise, it is just a 716 pointer to the function. 717 718 Unfortunately, using the lowest bit of PFN doesn't work in 719 architectures that don't impose alignment requirements on function 720 addresses, or that use the lowest bit to tell one ISA from another, 721 for example. For such architectures, we use the lowest bit of 722 DELTA instead of the lowest bit of the PFN, and DELTA will be 723 multiplied by 2. */ 724 enum ptrmemfunc_vbit_where_t { 725 ptrmemfunc_vbit_in_pfn, 726 ptrmemfunc_vbit_in_delta 727 }; 728 729 /* Flags that may be passed in the third argument of decl_attributes, and 730 to handler functions for attributes. */ 731 enum attribute_flags { 732 /* The type passed in is the type of a DECL, and any attributes that 733 should be passed in again to be applied to the DECL rather than the 734 type should be returned. */ 735 ATTR_FLAG_DECL_NEXT = 1, 736 /* The type passed in is a function return type, and any attributes that 737 should be passed in again to be applied to the function type rather 738 than the return type should be returned. */ 739 ATTR_FLAG_FUNCTION_NEXT = 2, 740 /* The type passed in is an array element type, and any attributes that 741 should be passed in again to be applied to the array type rather 742 than the element type should be returned. */ 743 ATTR_FLAG_ARRAY_NEXT = 4, 744 /* The type passed in is a structure, union or enumeration type being 745 created, and should be modified in place. */ 746 ATTR_FLAG_TYPE_IN_PLACE = 8, 747 /* The attributes are being applied by default to a library function whose 748 name indicates known behavior, and should be silently ignored if they 749 are not in fact compatible with the function type. */ 750 ATTR_FLAG_BUILT_IN = 16, 751 /* A given attribute has been parsed as a C++-11 attribute. */ 752 ATTR_FLAG_CXX11 = 32 753 }; 754 755 /* Types used to represent sizes. */ 756 enum size_type_kind { 757 stk_sizetype, /* Normal representation of sizes in bytes. */ 758 stk_ssizetype, /* Signed representation of sizes in bytes. */ 759 stk_bitsizetype, /* Normal representation of sizes in bits. */ 760 stk_sbitsizetype, /* Signed representation of sizes in bits. */ 761 stk_type_kind_last 762 }; 763 764 enum operand_equal_flag { 765 OEP_ONLY_CONST = 1, 766 OEP_PURE_SAME = 2, 767 OEP_MATCH_SIDE_EFFECTS = 4, 768 OEP_ADDRESS_OF = 8 769 }; 770 771 /* Enum and arrays used for tree allocation stats. 772 Keep in sync with tree.c:tree_node_kind_names. */ 773 enum tree_node_kind { 774 d_kind, 775 t_kind, 776 b_kind, 777 s_kind, 778 r_kind, 779 e_kind, 780 c_kind, 781 id_kind, 782 vec_kind, 783 binfo_kind, 784 ssa_name_kind, 785 constr_kind, 786 x_kind, 787 lang_decl, 788 lang_type, 789 omp_clause_kind, 790 all_kinds 791 }; 792 793 enum annot_expr_kind { 794 annot_expr_ivdep_kind, 795 annot_expr_no_vector_kind, 796 annot_expr_vector_kind, 797 annot_expr_kind_last 798 }; 799 800 /*--------------------------------------------------------------------------- 801 Type definitions 802 ---------------------------------------------------------------------------*/ 803 /* When processing aliases at the symbol table level, we need the 804 declaration of target. For this reason we need to queue aliases and 805 process them after all declarations has been produced. */ 806 struct GTY(()) alias_pair { 807 tree decl; 808 tree target; 809 }; 810 811 /* An initialization priority. */ 812 typedef unsigned short priority_type; 813 814 /* The type of a callback function for walking over tree structure. */ 815 typedef tree (*walk_tree_fn) (tree *, int *, void *); 816 817 /* The type of a callback function that represents a custom walk_tree. */ 818 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *), 819 void *, hash_set<tree> *); 820 821 822 /*--------------------------------------------------------------------------- 823 Main data structures 824 ---------------------------------------------------------------------------*/ 825 /* A tree node can represent a data type, a variable, an expression 826 or a statement. Each node has a TREE_CODE which says what kind of 827 thing it represents. Some common codes are: 828 INTEGER_TYPE -- represents a type of integers. 829 ARRAY_TYPE -- represents a type of pointer. 830 VAR_DECL -- represents a declared variable. 831 INTEGER_CST -- represents a constant integer value. 832 PLUS_EXPR -- represents a sum (an expression). 833 834 As for the contents of a tree node: there are some fields 835 that all nodes share. Each TREE_CODE has various special-purpose 836 fields as well. The fields of a node are never accessed directly, 837 always through accessor macros. */ 838 839 /* Every kind of tree node starts with this structure, 840 so all nodes have these fields. 841 842 See the accessor macros, defined below, for documentation of the 843 fields, and the table below which connects the fields and the 844 accessor macros. */ 845 846 struct GTY(()) tree_base { 847 ENUM_BITFIELD(tree_code) code : 16; 848 849 unsigned side_effects_flag : 1; 850 unsigned constant_flag : 1; 851 unsigned addressable_flag : 1; 852 unsigned volatile_flag : 1; 853 unsigned readonly_flag : 1; 854 unsigned asm_written_flag: 1; 855 unsigned nowarning_flag : 1; 856 unsigned visited : 1; 857 858 unsigned used_flag : 1; 859 unsigned nothrow_flag : 1; 860 unsigned static_flag : 1; 861 unsigned public_flag : 1; 862 unsigned private_flag : 1; 863 unsigned protected_flag : 1; 864 unsigned deprecated_flag : 1; 865 unsigned default_def_flag : 1; 866 867 union { 868 /* The bits in the following structure should only be used with 869 accessor macros that constrain inputs with tree checking. */ 870 struct { 871 unsigned lang_flag_0 : 1; 872 unsigned lang_flag_1 : 1; 873 unsigned lang_flag_2 : 1; 874 unsigned lang_flag_3 : 1; 875 unsigned lang_flag_4 : 1; 876 unsigned lang_flag_5 : 1; 877 unsigned lang_flag_6 : 1; 878 unsigned saturating_flag : 1; 879 880 unsigned unsigned_flag : 1; 881 unsigned packed_flag : 1; 882 unsigned user_align : 1; 883 unsigned nameless_flag : 1; 884 unsigned atomic_flag : 1; 885 unsigned spare0 : 3; 886 887 unsigned spare1 : 8; 888 889 /* This field is only used with TREE_TYPE nodes; the only reason it is 890 present in tree_base instead of tree_type is to save space. The size 891 of the field must be large enough to hold addr_space_t values. */ 892 unsigned address_space : 8; 893 } bits; 894 895 /* The following fields are present in tree_base to save space. The 896 nodes using them do not require any of the flags above and so can 897 make better use of the 4-byte sized word. */ 898 899 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */ 900 struct { 901 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 902 its native precision. */ 903 unsigned char unextended; 904 905 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to 906 wider precisions based on its TYPE_SIGN. */ 907 unsigned char extended; 908 909 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 910 offset_int precision, with smaller integers being extended 911 according to their TYPE_SIGN. This is equal to one of the two 912 fields above but is cached for speed. */ 913 unsigned char offset; 914 } int_length; 915 916 /* VEC length. This field is only used with TREE_VEC. */ 917 int length; 918 919 /* SSA version number. This field is only used with SSA_NAME. */ 920 unsigned int version; 921 922 /* Internal function code. */ 923 enum internal_fn ifn; 924 925 /* The following two fields are used for MEM_REF and TARGET_MEM_REF 926 expression trees and specify known data non-dependences. For 927 two memory references in a function they are known to not 928 alias if dependence_info.clique are equal and dependence_info.base 929 are distinct. */ 930 struct { 931 unsigned short clique; 932 unsigned short base; 933 } dependence_info; 934 } GTY((skip(""))) u; 935 }; 936 937 /* The following table lists the uses of each of the above flags and 938 for which types of nodes they are defined. 939 940 addressable_flag: 941 942 TREE_ADDRESSABLE in 943 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL 944 SSA_NAME 945 all types 946 CONSTRUCTOR, IDENTIFIER_NODE 947 STMT_EXPR 948 949 CALL_EXPR_TAILCALL in 950 CALL_EXPR 951 952 CASE_LOW_SEEN in 953 CASE_LABEL_EXPR 954 955 PREDICT_EXPR_OUTCOME in 956 PREDICT_EXPR 957 958 static_flag: 959 960 TREE_STATIC in 961 VAR_DECL, FUNCTION_DECL 962 CONSTRUCTOR 963 964 TREE_NO_TRAMPOLINE in 965 ADDR_EXPR 966 967 BINFO_VIRTUAL_P in 968 TREE_BINFO 969 970 TREE_SYMBOL_REFERENCED in 971 IDENTIFIER_NODE 972 973 CLEANUP_EH_ONLY in 974 TARGET_EXPR, WITH_CLEANUP_EXPR 975 976 TRY_CATCH_IS_CLEANUP in 977 TRY_CATCH_EXPR 978 979 ASM_INPUT_P in 980 ASM_EXPR 981 982 TYPE_REF_CAN_ALIAS_ALL in 983 POINTER_TYPE, REFERENCE_TYPE 984 985 CASE_HIGH_SEEN in 986 CASE_LABEL_EXPR 987 988 ENUM_IS_SCOPED in 989 ENUMERAL_TYPE 990 991 TRANSACTION_EXPR_OUTER in 992 TRANSACTION_EXPR 993 994 SSA_NAME_ANTI_RANGE_P in 995 SSA_NAME 996 997 public_flag: 998 999 TREE_OVERFLOW in 1000 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST 1001 1002 TREE_PUBLIC in 1003 VAR_DECL, FUNCTION_DECL 1004 IDENTIFIER_NODE 1005 1006 CONSTRUCTOR_NO_CLEARING in 1007 CONSTRUCTOR 1008 1009 ASM_VOLATILE_P in 1010 ASM_EXPR 1011 1012 CALL_EXPR_VA_ARG_PACK in 1013 CALL_EXPR 1014 1015 TYPE_CACHED_VALUES_P in 1016 all types 1017 1018 SAVE_EXPR_RESOLVED_P in 1019 SAVE_EXPR 1020 1021 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in 1022 OMP_CLAUSE_LASTPRIVATE 1023 1024 OMP_CLAUSE_PRIVATE_DEBUG in 1025 OMP_CLAUSE_PRIVATE 1026 1027 OMP_CLAUSE_LINEAR_NO_COPYIN in 1028 OMP_CLAUSE_LINEAR 1029 1030 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in 1031 OMP_CLAUSE_MAP 1032 1033 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in 1034 OMP_CLAUSE_REDUCTION 1035 1036 TRANSACTION_EXPR_RELAXED in 1037 TRANSACTION_EXPR 1038 1039 private_flag: 1040 1041 TREE_PRIVATE in 1042 all decls 1043 1044 CALL_EXPR_RETURN_SLOT_OPT in 1045 CALL_EXPR 1046 1047 OMP_SECTION_LAST in 1048 OMP_SECTION 1049 1050 OMP_PARALLEL_COMBINED in 1051 OMP_PARALLEL 1052 1053 OMP_ATOMIC_SEQ_CST in 1054 OMP_ATOMIC* 1055 1056 OMP_CLAUSE_PRIVATE_OUTER_REF in 1057 OMP_CLAUSE_PRIVATE 1058 1059 OMP_CLAUSE_LINEAR_NO_COPYOUT in 1060 OMP_CLAUSE_LINEAR 1061 1062 TYPE_REF_IS_RVALUE in 1063 REFERENCE_TYPE 1064 1065 ENUM_IS_OPAQUE in 1066 ENUMERAL_TYPE 1067 1068 protected_flag: 1069 1070 TREE_PROTECTED in 1071 BLOCK 1072 all decls 1073 1074 CALL_FROM_THUNK_P and 1075 CALL_ALLOCA_FOR_VAR_P in 1076 CALL_EXPR 1077 1078 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in 1079 OMP_CLAUSE_LINEAR 1080 1081 side_effects_flag: 1082 1083 TREE_SIDE_EFFECTS in 1084 all expressions 1085 all decls 1086 all constants 1087 1088 FORCED_LABEL in 1089 LABEL_DECL 1090 1091 volatile_flag: 1092 1093 TREE_THIS_VOLATILE in 1094 all expressions 1095 all decls 1096 1097 TYPE_VOLATILE in 1098 all types 1099 1100 readonly_flag: 1101 1102 TREE_READONLY in 1103 all expressions 1104 all decls 1105 1106 TYPE_READONLY in 1107 all types 1108 1109 constant_flag: 1110 1111 TREE_CONSTANT in 1112 all expressions 1113 all decls 1114 all constants 1115 1116 TYPE_SIZES_GIMPLIFIED in 1117 all types 1118 1119 unsigned_flag: 1120 1121 TYPE_UNSIGNED in 1122 all types 1123 1124 DECL_UNSIGNED in 1125 all decls 1126 1127 asm_written_flag: 1128 1129 TREE_ASM_WRITTEN in 1130 VAR_DECL, FUNCTION_DECL, TYPE_DECL 1131 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE 1132 BLOCK, STRING_CST 1133 1134 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in 1135 SSA_NAME 1136 1137 used_flag: 1138 1139 TREE_USED in 1140 all expressions 1141 all decls 1142 IDENTIFIER_NODE 1143 1144 nothrow_flag: 1145 1146 TREE_NOTHROW in 1147 CALL_EXPR 1148 FUNCTION_DECL 1149 1150 TYPE_ALIGN_OK in 1151 all types 1152 1153 TREE_THIS_NOTRAP in 1154 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF 1155 1156 SSA_NAME_IN_FREE_LIST in 1157 SSA_NAME 1158 1159 DECL_NONALIASED in 1160 VAR_DECL 1161 1162 deprecated_flag: 1163 1164 TREE_DEPRECATED in 1165 all decls 1166 all types 1167 1168 IDENTIFIER_TRANSPARENT_ALIAS in 1169 IDENTIFIER_NODE 1170 1171 visited: 1172 1173 TREE_VISITED in 1174 all trees (used liberally by many passes) 1175 1176 saturating_flag: 1177 1178 TYPE_REVERSE_STORAGE_ORDER in 1179 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE 1180 1181 TYPE_SATURATING in 1182 other types 1183 1184 VAR_DECL_IS_VIRTUAL_OPERAND in 1185 VAR_DECL 1186 1187 nowarning_flag: 1188 1189 TREE_NO_WARNING in 1190 all expressions 1191 all decls 1192 1193 TYPE_ARTIFICIAL in 1194 all types 1195 1196 default_def_flag: 1197 1198 TYPE_FINAL_P in 1199 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE 1200 1201 TYPE_VECTOR_OPAQUE in 1202 VECTOR_TYPE 1203 1204 SSA_NAME_IS_DEFAULT_DEF in 1205 SSA_NAME 1206 1207 DECL_NONLOCAL_FRAME in 1208 VAR_DECL 1209 1210 REF_REVERSE_STORAGE_ORDER in 1211 BIT_FIELD_REF, MEM_REF 1212 */ 1213 1214 struct GTY(()) tree_typed { 1215 struct tree_base base; 1216 tree type; 1217 }; 1218 1219 struct GTY(()) tree_common { 1220 struct tree_typed typed; 1221 tree chain; 1222 }; 1223 1224 struct GTY(()) tree_int_cst { 1225 struct tree_typed typed; 1226 HOST_WIDE_INT val[1]; 1227 }; 1228 1229 1230 struct GTY(()) tree_real_cst { 1231 struct tree_typed typed; 1232 struct real_value * real_cst_ptr; 1233 }; 1234 1235 struct GTY(()) tree_fixed_cst { 1236 struct tree_typed typed; 1237 struct fixed_value * fixed_cst_ptr; 1238 }; 1239 1240 struct GTY(()) tree_string { 1241 struct tree_typed typed; 1242 int length; 1243 char str[1]; 1244 }; 1245 1246 struct GTY(()) tree_complex { 1247 struct tree_typed typed; 1248 tree real; 1249 tree imag; 1250 }; 1251 1252 struct GTY(()) tree_vector { 1253 struct tree_typed typed; 1254 tree GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts[1]; 1255 }; 1256 1257 struct GTY(()) tree_identifier { 1258 struct tree_common common; 1259 struct ht_identifier id; 1260 }; 1261 1262 struct GTY(()) tree_list { 1263 struct tree_common common; 1264 tree purpose; 1265 tree value; 1266 }; 1267 1268 struct GTY(()) tree_vec { 1269 struct tree_common common; 1270 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1]; 1271 }; 1272 1273 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the 1274 element. INDEX can optionally design the position of VALUE: in arrays, 1275 it is the index where VALUE has to be placed; in structures, it is the 1276 FIELD_DECL of the member. */ 1277 struct GTY(()) constructor_elt { 1278 tree index; 1279 tree value; 1280 }; 1281 1282 struct GTY(()) tree_constructor { 1283 struct tree_typed typed; 1284 vec<constructor_elt, va_gc> *elts; 1285 }; 1286 1287 enum omp_clause_depend_kind 1288 { 1289 OMP_CLAUSE_DEPEND_IN, 1290 OMP_CLAUSE_DEPEND_OUT, 1291 OMP_CLAUSE_DEPEND_INOUT, 1292 OMP_CLAUSE_DEPEND_SOURCE, 1293 OMP_CLAUSE_DEPEND_SINK, 1294 OMP_CLAUSE_DEPEND_LAST 1295 }; 1296 1297 enum omp_clause_proc_bind_kind 1298 { 1299 /* Numbers should match omp_proc_bind_t enum in omp.h. */ 1300 OMP_CLAUSE_PROC_BIND_FALSE = 0, 1301 OMP_CLAUSE_PROC_BIND_TRUE = 1, 1302 OMP_CLAUSE_PROC_BIND_MASTER = 2, 1303 OMP_CLAUSE_PROC_BIND_CLOSE = 3, 1304 OMP_CLAUSE_PROC_BIND_SPREAD = 4, 1305 OMP_CLAUSE_PROC_BIND_LAST 1306 }; 1307 1308 enum omp_clause_linear_kind 1309 { 1310 OMP_CLAUSE_LINEAR_DEFAULT, 1311 OMP_CLAUSE_LINEAR_REF, 1312 OMP_CLAUSE_LINEAR_VAL, 1313 OMP_CLAUSE_LINEAR_UVAL 1314 }; 1315 1316 struct GTY(()) tree_exp { 1317 struct tree_typed typed; 1318 location_t locus; 1319 tree GTY ((special ("tree_exp"), 1320 desc ("TREE_CODE ((tree) &%0)"))) 1321 operands[1]; 1322 }; 1323 1324 /* Immediate use linking structure. This structure is used for maintaining 1325 a doubly linked list of uses of an SSA_NAME. */ 1326 struct GTY(()) ssa_use_operand_t { 1327 struct ssa_use_operand_t* GTY((skip(""))) prev; 1328 struct ssa_use_operand_t* GTY((skip(""))) next; 1329 /* Immediate uses for a given SSA name are maintained as a cyclic 1330 list. To recognize the root of this list, the location field 1331 needs to point to the original SSA name. Since statements and 1332 SSA names are of different data types, we need this union. See 1333 the explanation in struct imm_use_iterator. */ 1334 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc; 1335 tree *GTY((skip(""))) use; 1336 }; 1337 1338 struct GTY(()) tree_ssa_name { 1339 struct tree_typed typed; 1340 1341 /* _DECL wrapped by this SSA name. */ 1342 tree var; 1343 1344 /* Statement that defines this SSA name. */ 1345 gimple *def_stmt; 1346 1347 /* Value range information. */ 1348 union ssa_name_info_type { 1349 /* Pointer attributes used for alias analysis. */ 1350 struct GTY ((tag ("0"))) ptr_info_def *ptr_info; 1351 /* Value range attributes used for zero/sign extension elimination. */ 1352 struct GTY ((tag ("1"))) range_info_def *range_info; 1353 } GTY ((desc ("%1.typed.type ?" \ 1354 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info; 1355 1356 /* Immediate uses list for this SSA_NAME. */ 1357 struct ssa_use_operand_t imm_uses; 1358 }; 1359 1360 struct GTY(()) phi_arg_d { 1361 /* imm_use MUST be the first element in struct because we do some 1362 pointer arithmetic with it. See phi_arg_index_from_use. */ 1363 struct ssa_use_operand_t imm_use; 1364 tree def; 1365 location_t locus; 1366 }; 1367 1368 struct GTY(()) tree_omp_clause { 1369 struct tree_common common; 1370 location_t locus; 1371 enum omp_clause_code code; 1372 union omp_clause_subcode { 1373 enum omp_clause_default_kind default_kind; 1374 enum omp_clause_schedule_kind schedule_kind; 1375 enum omp_clause_depend_kind depend_kind; 1376 /* See include/gomp-constants.h for enum gomp_map_kind's values. */ 1377 unsigned int map_kind; 1378 enum omp_clause_proc_bind_kind proc_bind_kind; 1379 enum tree_code reduction_code; 1380 enum omp_clause_linear_kind linear_kind; 1381 enum tree_code if_modifier; 1382 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target 1383 construct describes. */ 1384 unsigned int dimension; 1385 } GTY ((skip)) subcode; 1386 1387 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's 1388 usage. */ 1389 gimple_seq gimple_reduction_init; 1390 gimple_seq gimple_reduction_merge; 1391 1392 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) 1393 ops[1]; 1394 }; 1395 1396 struct GTY(()) tree_block { 1397 struct tree_base base; 1398 tree chain; 1399 1400 unsigned abstract_flag : 1; 1401 unsigned block_num : 31; 1402 1403 location_t locus; 1404 location_t end_locus; 1405 1406 tree vars; 1407 vec<tree, va_gc> *nonlocalized_vars; 1408 1409 tree subblocks; 1410 tree supercontext; 1411 tree abstract_origin; 1412 tree fragment_origin; 1413 tree fragment_chain; 1414 1415 /* Pointer to the DWARF lexical block. */ 1416 struct die_struct *die; 1417 }; 1418 1419 struct GTY(()) tree_type_common { 1420 struct tree_common common; 1421 tree size; 1422 tree size_unit; 1423 tree attributes; 1424 unsigned int uid; 1425 1426 unsigned int precision : 10; 1427 unsigned no_force_blk_flag : 1; 1428 unsigned needs_constructing_flag : 1; 1429 unsigned transparent_aggr_flag : 1; 1430 unsigned restrict_flag : 1; 1431 unsigned contains_placeholder_bits : 2; 1432 1433 ENUM_BITFIELD(machine_mode) mode : 8; 1434 1435 unsigned string_flag : 1; 1436 unsigned lang_flag_0 : 1; 1437 unsigned lang_flag_1 : 1; 1438 unsigned lang_flag_2 : 1; 1439 unsigned lang_flag_3 : 1; 1440 unsigned lang_flag_4 : 1; 1441 unsigned lang_flag_5 : 1; 1442 unsigned lang_flag_6 : 1; 1443 1444 unsigned int align; 1445 alias_set_type alias_set; 1446 tree pointer_to; 1447 tree reference_to; 1448 union tree_type_symtab { 1449 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address; 1450 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer; 1451 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die; 1452 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab; 1453 tree canonical; 1454 tree next_variant; 1455 tree main_variant; 1456 tree context; 1457 tree name; 1458 }; 1459 1460 struct GTY(()) tree_type_with_lang_specific { 1461 struct tree_type_common common; 1462 /* Points to a structure whose details depend on the language in use. */ 1463 struct lang_type *lang_specific; 1464 }; 1465 1466 struct GTY(()) tree_type_non_common { 1467 struct tree_type_with_lang_specific with_lang_specific; 1468 tree values; 1469 tree minval; 1470 tree maxval; 1471 tree binfo; 1472 }; 1473 1474 struct GTY (()) tree_binfo { 1475 struct tree_common common; 1476 1477 tree offset; 1478 tree vtable; 1479 tree virtuals; 1480 tree vptr_field; 1481 vec<tree, va_gc> *base_accesses; 1482 tree inheritance; 1483 1484 tree vtt_subvtt; 1485 tree vtt_vptr; 1486 1487 vec<tree, va_gc> base_binfos; 1488 }; 1489 1490 struct GTY(()) tree_decl_minimal { 1491 struct tree_common common; 1492 location_t locus; 1493 unsigned int uid; 1494 tree name; 1495 tree context; 1496 }; 1497 1498 struct GTY(()) tree_decl_common { 1499 struct tree_decl_minimal common; 1500 tree size; 1501 1502 ENUM_BITFIELD(machine_mode) mode : 8; 1503 1504 unsigned nonlocal_flag : 1; 1505 unsigned virtual_flag : 1; 1506 unsigned ignored_flag : 1; 1507 unsigned abstract_flag : 1; 1508 unsigned artificial_flag : 1; 1509 unsigned preserve_flag: 1; 1510 unsigned debug_expr_is_from : 1; 1511 1512 unsigned lang_flag_0 : 1; 1513 unsigned lang_flag_1 : 1; 1514 unsigned lang_flag_2 : 1; 1515 unsigned lang_flag_3 : 1; 1516 unsigned lang_flag_4 : 1; 1517 unsigned lang_flag_5 : 1; 1518 unsigned lang_flag_6 : 1; 1519 unsigned lang_flag_7 : 1; 1520 unsigned lang_flag_8 : 1; 1521 1522 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */ 1523 unsigned decl_flag_0 : 1; 1524 /* In FIELD_DECL, this is DECL_BIT_FIELD 1525 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL. 1526 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */ 1527 unsigned decl_flag_1 : 1; 1528 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P 1529 In VAR_DECL, PARM_DECL and RESULT_DECL, this is 1530 DECL_HAS_VALUE_EXPR_P. */ 1531 unsigned decl_flag_2 : 1; 1532 /* 1 bit unused. */ 1533 unsigned decl_flag_3 : 1; 1534 /* Logically, these two would go in a theoretical base shared by var and 1535 parm decl. */ 1536 unsigned gimple_reg_flag : 1; 1537 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */ 1538 unsigned decl_by_reference_flag : 1; 1539 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */ 1540 unsigned decl_read_flag : 1; 1541 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */ 1542 unsigned decl_nonshareable_flag : 1; 1543 1544 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */ 1545 unsigned int off_align : 8; 1546 1547 /* 24 bits unused. */ 1548 1549 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */ 1550 unsigned int align; 1551 1552 /* UID for points-to sets, stable over copying from inlining. */ 1553 unsigned int pt_uid; 1554 1555 tree size_unit; 1556 tree initial; 1557 tree attributes; 1558 tree abstract_origin; 1559 1560 /* Points to a structure whose details depend on the language in use. */ 1561 struct lang_decl *lang_specific; 1562 }; 1563 1564 struct GTY(()) tree_decl_with_rtl { 1565 struct tree_decl_common common; 1566 rtx rtl; 1567 }; 1568 1569 struct GTY(()) tree_field_decl { 1570 struct tree_decl_common common; 1571 1572 tree offset; 1573 tree bit_field_type; 1574 tree qualifier; 1575 tree bit_offset; 1576 tree fcontext; 1577 }; 1578 1579 struct GTY(()) tree_label_decl { 1580 struct tree_decl_with_rtl common; 1581 int label_decl_uid; 1582 int eh_landing_pad_nr; 1583 }; 1584 1585 struct GTY(()) tree_result_decl { 1586 struct tree_decl_with_rtl common; 1587 }; 1588 1589 struct GTY(()) tree_const_decl { 1590 struct tree_decl_common common; 1591 }; 1592 1593 struct GTY(()) tree_parm_decl { 1594 struct tree_decl_with_rtl common; 1595 rtx incoming_rtl; 1596 }; 1597 1598 struct GTY(()) tree_decl_with_vis { 1599 struct tree_decl_with_rtl common; 1600 tree assembler_name; 1601 struct symtab_node *symtab_node; 1602 1603 /* Belong to VAR_DECL exclusively. */ 1604 unsigned defer_output : 1; 1605 unsigned hard_register : 1; 1606 unsigned common_flag : 1; 1607 unsigned in_text_section : 1; 1608 unsigned in_constant_pool : 1; 1609 unsigned dllimport_flag : 1; 1610 /* Don't belong to VAR_DECL exclusively. */ 1611 unsigned weak_flag : 1; 1612 1613 unsigned seen_in_bind_expr : 1; 1614 unsigned comdat_flag : 1; 1615 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */ 1616 ENUM_BITFIELD(symbol_visibility) visibility : 2; 1617 unsigned visibility_specified : 1; 1618 1619 /* Belong to FUNCTION_DECL exclusively. */ 1620 unsigned init_priority_p : 1; 1621 /* Used by C++ only. Might become a generic decl flag. */ 1622 unsigned shadowed_for_var_p : 1; 1623 /* Belong to FUNCTION_DECL exclusively. */ 1624 unsigned cxx_constructor : 1; 1625 /* Belong to FUNCTION_DECL exclusively. */ 1626 unsigned cxx_destructor : 1; 1627 /* Belong to FUNCTION_DECL exclusively. */ 1628 unsigned final : 1; 1629 /* Belong to FUNCTION_DECL exclusively. */ 1630 unsigned regdecl_flag : 1; 1631 /* 14 unused bits. */ 1632 }; 1633 1634 struct GTY(()) tree_var_decl { 1635 struct tree_decl_with_vis common; 1636 }; 1637 1638 struct GTY(()) tree_decl_non_common { 1639 struct tree_decl_with_vis common; 1640 /* Almost all FE's use this. */ 1641 tree result; 1642 }; 1643 1644 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the 1645 arguments/result/saved_tree fields by front ends. It was either inherit 1646 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL, 1647 which seemed a bit strange. */ 1648 1649 struct GTY(()) tree_function_decl { 1650 struct tree_decl_non_common common; 1651 1652 struct function *f; 1653 1654 /* Arguments of the function. */ 1655 tree arguments; 1656 /* The personality function. Used for stack unwinding. */ 1657 tree personality; 1658 1659 /* Function specific options that are used by this function. */ 1660 tree function_specific_target; /* target options */ 1661 tree function_specific_optimization; /* optimization options */ 1662 1663 /* Generic function body. */ 1664 tree saved_tree; 1665 /* Index within a virtual table. */ 1666 tree vindex; 1667 1668 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is 1669 DECL_FUNCTION_CODE. Otherwise unused. 1670 ??? The bitfield needs to be able to hold all target function 1671 codes as well. */ 1672 ENUM_BITFIELD(built_in_function) function_code : 12; 1673 ENUM_BITFIELD(built_in_class) built_in_class : 2; 1674 1675 unsigned static_ctor_flag : 1; 1676 unsigned static_dtor_flag : 1; 1677 1678 unsigned uninlinable : 1; 1679 unsigned possibly_inlined : 1; 1680 unsigned novops_flag : 1; 1681 unsigned returns_twice_flag : 1; 1682 unsigned malloc_flag : 1; 1683 unsigned operator_new_flag : 1; 1684 unsigned declared_inline_flag : 1; 1685 unsigned no_inline_warning_flag : 1; 1686 1687 unsigned no_instrument_function_entry_exit : 1; 1688 unsigned no_limit_stack : 1; 1689 unsigned disregard_inline_limits : 1; 1690 unsigned pure_flag : 1; 1691 unsigned looping_const_or_pure_flag : 1; 1692 unsigned has_debug_args_flag : 1; 1693 unsigned tm_clone_flag : 1; 1694 unsigned versioned_function : 1; 1695 /* No bits left. */ 1696 }; 1697 1698 struct GTY(()) tree_translation_unit_decl { 1699 struct tree_decl_common common; 1700 /* Source language of this translation unit. Used for DWARF output. */ 1701 const char * GTY((skip(""))) language; 1702 /* TODO: Non-optimization used to build this translation unit. */ 1703 /* TODO: Root of a partial DWARF tree for global types and decls. */ 1704 }; 1705 1706 struct GTY(()) tree_type_decl { 1707 struct tree_decl_non_common common; 1708 1709 }; 1710 1711 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node 1712 { 1713 struct tree_statement_list_node *prev; 1714 struct tree_statement_list_node *next; 1715 tree stmt; 1716 }; 1717 1718 struct GTY(()) tree_statement_list 1719 { 1720 struct tree_typed typed; 1721 struct tree_statement_list_node *head; 1722 struct tree_statement_list_node *tail; 1723 }; 1724 1725 1726 /* Optimization options used by a function. */ 1727 1728 struct GTY(()) tree_optimization_option { 1729 struct tree_common common; 1730 1731 /* The optimization options used by the user. */ 1732 struct cl_optimization *opts; 1733 1734 /* Target optabs for this set of optimization options. This is of 1735 type `struct target_optabs *'. */ 1736 void *GTY ((atomic)) optabs; 1737 1738 /* The value of this_target_optabs against which the optabs above were 1739 generated. */ 1740 struct target_optabs *GTY ((skip)) base_optabs; 1741 }; 1742 1743 /* Forward declaration, defined in target-globals.h. */ 1744 1745 struct GTY(()) target_globals; 1746 1747 /* Target options used by a function. */ 1748 1749 struct GTY(()) tree_target_option { 1750 struct tree_common common; 1751 1752 /* Target globals for the corresponding target option. */ 1753 struct target_globals *globals; 1754 1755 /* The optimization options used by the user. */ 1756 struct cl_target_option *opts; 1757 }; 1758 1759 /* Define the overall contents of a tree node. 1760 It may be any of the structures declared above 1761 for various types of node. */ 1762 union GTY ((ptr_alias (union lang_tree_node), 1763 desc ("tree_node_structure (&%h)"), variable_size)) tree_node { 1764 struct tree_base GTY ((tag ("TS_BASE"))) base; 1765 struct tree_typed GTY ((tag ("TS_TYPED"))) typed; 1766 struct tree_common GTY ((tag ("TS_COMMON"))) common; 1767 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst; 1768 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst; 1769 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst; 1770 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector; 1771 struct tree_string GTY ((tag ("TS_STRING"))) string; 1772 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex; 1773 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier; 1774 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal; 1775 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common; 1776 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl; 1777 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) 1778 decl_non_common; 1779 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl; 1780 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis; 1781 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl; 1782 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl; 1783 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl; 1784 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl; 1785 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl; 1786 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl; 1787 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl; 1788 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL"))) 1789 translation_unit_decl; 1790 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common; 1791 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC"))) 1792 type_with_lang_specific; 1793 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON"))) 1794 type_non_common; 1795 struct tree_list GTY ((tag ("TS_LIST"))) list; 1796 struct tree_vec GTY ((tag ("TS_VEC"))) vec; 1797 struct tree_exp GTY ((tag ("TS_EXP"))) exp; 1798 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name; 1799 struct tree_block GTY ((tag ("TS_BLOCK"))) block; 1800 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo; 1801 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list; 1802 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor; 1803 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause; 1804 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization; 1805 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option; 1806 }; 1807 1808 /* Structure describing an attribute and a function to handle it. */ 1809 struct attribute_spec { 1810 /* The name of the attribute (without any leading or trailing __), 1811 or NULL to mark the end of a table of attributes. */ 1812 const char *name; 1813 /* The minimum length of the list of arguments of the attribute. */ 1814 int min_length; 1815 /* The maximum length of the list of arguments of the attribute 1816 (-1 for no maximum). */ 1817 int max_length; 1818 /* Whether this attribute requires a DECL. If it does, it will be passed 1819 from types of DECLs, function return types and array element types to 1820 the DECLs, function types and array types respectively; but when 1821 applied to a type in any other circumstances, it will be ignored with 1822 a warning. (If greater control is desired for a given attribute, 1823 this should be false, and the flags argument to the handler may be 1824 used to gain greater control in that case.) */ 1825 bool decl_required; 1826 /* Whether this attribute requires a type. If it does, it will be passed 1827 from a DECL to the type of that DECL. */ 1828 bool type_required; 1829 /* Whether this attribute requires a function (or method) type. If it does, 1830 it will be passed from a function pointer type to the target type, 1831 and from a function return type (which is not itself a function 1832 pointer type) to the function type. */ 1833 bool function_type_required; 1834 /* Function to handle this attribute. NODE points to the node to which 1835 the attribute is to be applied. If a DECL, it should be modified in 1836 place; if a TYPE, a copy should be created. NAME is the name of the 1837 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST 1838 of the arguments (which may be NULL). FLAGS gives further information 1839 about the context of the attribute. Afterwards, the attributes will 1840 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate, 1841 unless *NO_ADD_ATTRS is set to true (which should be done on error, 1842 as well as in any other cases when the attributes should not be added 1843 to the DECL or TYPE). Depending on FLAGS, any attributes to be 1844 applied to another type or DECL later may be returned; 1845 otherwise the return value should be NULL_TREE. This pointer may be 1846 NULL if no special handling is required beyond the checks implied 1847 by the rest of this structure. */ 1848 tree (*handler) (tree *node, tree name, tree args, 1849 int flags, bool *no_add_attrs); 1850 /* Specifies if attribute affects type's identity. */ 1851 bool affects_type_identity; 1852 }; 1853 1854 /* These functions allow a front-end to perform a manual layout of a 1855 RECORD_TYPE. (For instance, if the placement of subsequent fields 1856 depends on the placement of fields so far.) Begin by calling 1857 start_record_layout. Then, call place_field for each of the 1858 fields. Then, call finish_record_layout. See layout_type for the 1859 default way in which these functions are used. */ 1860 typedef struct record_layout_info_s { 1861 /* The RECORD_TYPE that we are laying out. */ 1862 tree t; 1863 /* The offset into the record so far, in bytes, not including bits in 1864 BITPOS. */ 1865 tree offset; 1866 /* The last known alignment of SIZE. */ 1867 unsigned int offset_align; 1868 /* The bit position within the last OFFSET_ALIGN bits, in bits. */ 1869 tree bitpos; 1870 /* The alignment of the record so far, in bits. */ 1871 unsigned int record_align; 1872 /* The alignment of the record so far, ignoring #pragma pack and 1873 __attribute__ ((packed)), in bits. */ 1874 unsigned int unpacked_align; 1875 /* The previous field laid out. */ 1876 tree prev_field; 1877 /* The static variables (i.e., class variables, as opposed to 1878 instance variables) encountered in T. */ 1879 vec<tree, va_gc> *pending_statics; 1880 /* Bits remaining in the current alignment group */ 1881 int remaining_in_alignment; 1882 /* True if we've seen a packed field that didn't have normal 1883 alignment anyway. */ 1884 int packed_maybe_necessary; 1885 } *record_layout_info; 1886 1887 /* Iterator for going through the function arguments. */ 1888 struct function_args_iterator { 1889 tree next; /* TREE_LIST pointing to the next argument */ 1890 }; 1891 1892 /* Structures to map from a tree to another tree. */ 1893 struct GTY(()) tree_map_base { 1894 tree from; 1895 }; 1896 1897 /* Map from a tree to another tree. */ 1898 1899 struct GTY((for_user)) tree_map { 1900 struct tree_map_base base; 1901 unsigned int hash; 1902 tree to; 1903 }; 1904 1905 /* Map from a decl tree to another tree. */ 1906 struct GTY((for_user)) tree_decl_map { 1907 struct tree_map_base base; 1908 tree to; 1909 }; 1910 1911 /* Map from a tree to an int. */ 1912 struct GTY((for_user)) tree_int_map { 1913 struct tree_map_base base; 1914 unsigned int to; 1915 }; 1916 1917 /* Map from a decl tree to a tree vector. */ 1918 struct GTY((for_user)) tree_vec_map { 1919 struct tree_map_base base; 1920 vec<tree, va_gc> *to; 1921 }; 1922 1923 /* Abstract iterators for CALL_EXPRs. These static inline definitions 1924 have to go towards the end of tree.h so that union tree_node is fully 1925 defined by this point. */ 1926 1927 /* Structure containing iterator state. */ 1928 struct call_expr_arg_iterator { 1929 tree t; /* the call_expr */ 1930 int n; /* argument count */ 1931 int i; /* next argument index */ 1932 }; 1933 1934 struct const_call_expr_arg_iterator { 1935 const_tree t; /* the call_expr */ 1936 int n; /* argument count */ 1937 int i; /* next argument index */ 1938 }; 1939 1940 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin 1941 function, and flags. */ 1942 struct GTY(()) builtin_info_type { 1943 tree decl; 1944 /* Whether the user can use <xxx> instead of explicitly using calls 1945 to __builtin_<xxx>. */ 1946 unsigned implicit_p : 1; 1947 /* Whether the user has provided a declaration of <xxx>. */ 1948 unsigned declared_p : 1; 1949 }; 1950 1951 1952 /*--------------------------------------------------------------------------- 1953 Global variables 1954 ---------------------------------------------------------------------------*/ 1955 /* Matrix describing the structures contained in a given tree code. */ 1956 extern unsigned char tree_contains_struct[MAX_TREE_CODES][64]; 1957 1958 /* Class of tree given its code. */ 1959 extern const enum tree_code_class tree_code_type[]; 1960 1961 /* Each tree code class has an associated string representation. 1962 These must correspond to the tree_code_class entries. */ 1963 extern const char *const tree_code_class_strings[]; 1964 1965 /* Number of argument-words in each kind of tree-node. */ 1966 extern const unsigned char tree_code_length[]; 1967 1968 /* Vector of all alias pairs for global symbols. */ 1969 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs; 1970 1971 /* Names of all the built_in classes. */ 1972 extern const char *const built_in_class_names[BUILT_IN_LAST]; 1973 1974 /* Names of all the built_in functions. */ 1975 extern const char * built_in_names[(int) END_BUILTINS]; 1976 1977 /* Number of operands and names for each OMP_CLAUSE node. */ 1978 extern unsigned const char omp_clause_num_ops[]; 1979 extern const char * const omp_clause_code_name[]; 1980 1981 /* A vector of all translation-units. */ 1982 extern GTY (()) vec<tree, va_gc> *all_translation_units; 1983 1984 /* Vector of standard trees used by the C compiler. */ 1985 extern GTY(()) tree global_trees[TI_MAX]; 1986 1987 /* The standard C integer types. Use integer_type_kind to index into 1988 this array. */ 1989 extern GTY(()) tree integer_types[itk_none]; 1990 1991 /* Types used to represent sizes. */ 1992 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last]; 1993 1994 /* Arrays for keeping track of tree node statistics. */ 1995 extern int tree_node_counts[]; 1996 extern int tree_node_sizes[]; 1997 1998 /* True if we are in gimple form and the actions of the folders need to 1999 be restricted. False if we are not in gimple form and folding is not 2000 restricted to creating gimple expressions. */ 2001 extern bool in_gimple_form; 2002 2003 /* Functional interface to the builtin functions. */ 2004 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS]; 2005 2006 /* If nonzero, an upper limit on alignment of structure fields, in bits, */ 2007 extern unsigned int maximum_field_alignment; 2008 2009 /* Points to the FUNCTION_DECL of the function whose body we are reading. */ 2010 extern GTY(()) tree current_function_decl; 2011 2012 /* Nonzero means a FUNC_BEGIN label was emitted. */ 2013 extern GTY(()) const char * current_function_func_begin_label; 2014 2015 #endif // GCC_TREE_CORE_H 2016