1 /* Core data structures for the 'tree' type. 2 Copyright (C) 1989-2022 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 returns its first argument. */ 85 #define ECF_RET1 (1 << 11) 86 87 /* Nonzero if this call does not affect transactions. */ 88 #define ECF_TM_PURE (1 << 12) 89 90 /* Nonzero if this call is into the transaction runtime library. */ 91 #define ECF_TM_BUILTIN (1 << 13) 92 93 /* Nonzero if this is an indirect call by descriptor. */ 94 #define ECF_BY_DESCRIPTOR (1 << 14) 95 96 /* Nonzero if this is a cold function. */ 97 #define ECF_COLD (1 << 15) 98 99 /* Call argument flags. */ 100 101 /* Nonzero if the argument is not used by the function. */ 102 #define EAF_UNUSED (1 << 1) 103 104 /* Following flags come in pairs. First one is about direct dereferences 105 from the parameter, while the second is about memory reachable by 106 recursive dereferences. */ 107 108 /* Nonzero if memory reached by the argument is not clobbered. */ 109 #define EAF_NO_DIRECT_CLOBBER (1 << 2) 110 #define EAF_NO_INDIRECT_CLOBBER (1 << 3) 111 112 /* Nonzero if the argument does not escape. */ 113 #define EAF_NO_DIRECT_ESCAPE (1 << 4) 114 #define EAF_NO_INDIRECT_ESCAPE (1 << 5) 115 116 /* Nonzero if the argument does not escape to return value. */ 117 #define EAF_NOT_RETURNED_DIRECTLY (1 << 6) 118 #define EAF_NOT_RETURNED_INDIRECTLY (1 << 7) 119 120 /* Nonzero if the argument is not read. */ 121 #define EAF_NO_DIRECT_READ (1 << 8) 122 #define EAF_NO_INDIRECT_READ (1 << 9) 123 124 /* Call return flags. */ 125 /* Mask for the argument number that is returned. Lower two bits of 126 the return flags, encodes argument slots zero to three. */ 127 #define ERF_RETURN_ARG_MASK (3) 128 129 /* Nonzero if the return value is equal to the argument number 130 flags & ERF_RETURN_ARG_MASK. */ 131 #define ERF_RETURNS_ARG (1 << 2) 132 133 /* Nonzero if the return value does not alias with anything. Functions 134 with the malloc attribute have this set on their return value. */ 135 #define ERF_NOALIAS (1 << 3) 136 137 138 /*--------------------------------------------------------------------------- 139 Enumerations 140 ---------------------------------------------------------------------------*/ 141 /* Codes of tree nodes. */ 142 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM, 143 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE, 144 145 enum tree_code { 146 #include "all-tree.def" 147 MAX_TREE_CODES 148 }; 149 150 #undef DEFTREECODE 151 #undef END_OF_BASE_TREE_CODES 152 153 /* Number of language-independent tree codes. */ 154 #define NUM_TREE_CODES \ 155 ((int) LAST_AND_UNUSED_TREE_CODE) 156 157 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \ 158 (tree_contains_struct[(CODE)][(STRUCT)]) 159 160 161 /* Classify which part of the compiler has defined a given builtin function. 162 Note that we assume below that this is no more than two bits. */ 163 enum built_in_class { 164 NOT_BUILT_IN = 0, 165 BUILT_IN_FRONTEND, 166 BUILT_IN_MD, 167 BUILT_IN_NORMAL 168 }; 169 170 /* Last marker used for LTO stremaing of built_in_class. We cannot add it 171 to the enum since we need the enumb to fit in 2 bits. */ 172 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1) 173 174 /* Codes that identify the various built in functions 175 so that expand_call can identify them quickly. */ 176 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM, 177 enum built_in_function { 178 #include "builtins.def" 179 /* Complex division routines in libgcc. These are done via builtins 180 because emit_library_call_value can't handle complex values. */ 181 BUILT_IN_COMPLEX_MUL_MIN, 182 BUILT_IN_COMPLEX_MUL_MAX 183 = BUILT_IN_COMPLEX_MUL_MIN 184 + MAX_MODE_COMPLEX_FLOAT 185 - MIN_MODE_COMPLEX_FLOAT, 186 187 BUILT_IN_COMPLEX_DIV_MIN, 188 BUILT_IN_COMPLEX_DIV_MAX 189 = BUILT_IN_COMPLEX_DIV_MIN 190 + MAX_MODE_COMPLEX_FLOAT 191 - MIN_MODE_COMPLEX_FLOAT, 192 193 /* Upper bound on non-language-specific builtins. */ 194 END_BUILTINS 195 }; 196 197 /* Internal functions. */ 198 enum internal_fn { 199 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE, 200 #include "internal-fn.def" 201 IFN_LAST 202 }; 203 204 /* An enum that combines target-independent built-in functions with 205 internal functions, so that they can be treated in a similar way. 206 The numbers for built-in functions are the same as for the 207 built_in_function enum. The numbers for internal functions 208 start at END_BUITLINS. */ 209 enum combined_fn { 210 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 211 CFN_##ENUM = int (ENUM), 212 #include "builtins.def" 213 214 215 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \ 216 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE), 217 #include "internal-fn.def" 218 219 CFN_LAST 220 }; 221 222 /* Tree code classes. Each tree_code has an associated code class 223 represented by a TREE_CODE_CLASS. */ 224 enum tree_code_class { 225 tcc_exceptional, /* An exceptional code (fits no category). */ 226 tcc_constant, /* A constant. */ 227 /* Order of tcc_type and tcc_declaration is important. */ 228 tcc_type, /* A type object code. */ 229 tcc_declaration, /* A declaration (also serving as variable refs). */ 230 tcc_reference, /* A reference to storage. */ 231 tcc_comparison, /* A comparison expression. */ 232 tcc_unary, /* A unary arithmetic expression. */ 233 tcc_binary, /* A binary arithmetic expression. */ 234 tcc_statement, /* A statement expression, which have side effects 235 but usually no interesting value. */ 236 tcc_vl_exp, /* A function call or other expression with a 237 variable-length operand vector. */ 238 tcc_expression /* Any other expression. */ 239 }; 240 241 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into 242 the tables omp_clause_num_ops and omp_clause_code_name. */ 243 enum omp_clause_code { 244 /* Clause zero is special-cased inside the parser 245 (c_parser_omp_variable_list). */ 246 OMP_CLAUSE_ERROR = 0, 247 248 /* OpenACC/OpenMP clause: private (variable_list). */ 249 OMP_CLAUSE_PRIVATE, 250 251 /* OpenMP clause: shared (variable_list). */ 252 OMP_CLAUSE_SHARED, 253 254 /* OpenACC/OpenMP clause: firstprivate (variable_list). */ 255 OMP_CLAUSE_FIRSTPRIVATE, 256 257 /* OpenMP clause: lastprivate (variable_list). */ 258 OMP_CLAUSE_LASTPRIVATE, 259 260 /* OpenACC/OpenMP clause: reduction (operator:variable_list). 261 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator. 262 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var. 263 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var 264 into the shared one. 265 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL 266 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. 267 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy 268 VAR_DECL placeholder, used like the above for C/C++ array 269 reductions. */ 270 OMP_CLAUSE_REDUCTION, 271 272 /* OpenMP clause: task_reduction (operator:variable_list). */ 273 OMP_CLAUSE_TASK_REDUCTION, 274 275 /* OpenMP clause: in_reduction (operator:variable_list). */ 276 OMP_CLAUSE_IN_REDUCTION, 277 278 /* OpenMP clause: copyin (variable_list). */ 279 OMP_CLAUSE_COPYIN, 280 281 /* OpenMP clause: copyprivate (variable_list). */ 282 OMP_CLAUSE_COPYPRIVATE, 283 284 /* OpenMP clause: linear (variable-list[:linear-step]). */ 285 OMP_CLAUSE_LINEAR, 286 287 /* OpenMP clause: affinity([depend-modifier :] variable-list). */ 288 OMP_CLAUSE_AFFINITY, 289 290 /* OpenMP clause: aligned (variable-list[:alignment]). */ 291 OMP_CLAUSE_ALIGNED, 292 293 /* OpenMP clause: allocate ([allocator:]variable-list). */ 294 OMP_CLAUSE_ALLOCATE, 295 296 /* OpenMP clause: depend ({in,out,inout}:variable-list). */ 297 OMP_CLAUSE_DEPEND, 298 299 /* OpenMP clause: nontemporal (variable-list). */ 300 OMP_CLAUSE_NONTEMPORAL, 301 302 /* OpenMP clause: uniform (argument-list). */ 303 OMP_CLAUSE_UNIFORM, 304 305 /* OpenMP clause: to (extended-list). 306 Only when it appears in declare target. */ 307 OMP_CLAUSE_TO_DECLARE, 308 309 /* OpenMP clause: link (variable-list). */ 310 OMP_CLAUSE_LINK, 311 312 /* OpenMP clause: detach (event-handle). */ 313 OMP_CLAUSE_DETACH, 314 315 /* OpenACC clause: use_device (variable-list). 316 OpenMP clause: use_device_ptr (ptr-list). */ 317 OMP_CLAUSE_USE_DEVICE_PTR, 318 319 /* OpenMP clause: use_device_addr (variable-list). */ 320 OMP_CLAUSE_USE_DEVICE_ADDR, 321 322 /* OpenMP clause: is_device_ptr (variable-list). */ 323 OMP_CLAUSE_IS_DEVICE_PTR, 324 325 /* OpenMP clause: inclusive (variable-list). */ 326 OMP_CLAUSE_INCLUSIVE, 327 328 /* OpenMP clause: exclusive (variable-list). */ 329 OMP_CLAUSE_EXCLUSIVE, 330 331 /* OpenMP clause: from (variable-list). */ 332 OMP_CLAUSE_FROM, 333 334 /* OpenMP clause: to (variable-list). */ 335 OMP_CLAUSE_TO, 336 337 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr, 338 device, host (self), present, present_or_copy (pcopy), present_or_copyin 339 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)} 340 (variable-list). 341 342 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */ 343 OMP_CLAUSE_MAP, 344 345 /* OpenMP clause: has_device_addr (variable-list). */ 346 OMP_CLAUSE_HAS_DEVICE_ADDR, 347 348 /* Internal structure to hold OpenACC cache directive's variable-list. 349 #pragma acc cache (variable-list). */ 350 OMP_CLAUSE__CACHE_, 351 352 /* OpenACC clause: gang [(gang-argument-list)]. 353 Where 354 gang-argument-list: [gang-argument-list, ] gang-argument 355 gang-argument: [num:] integer-expression 356 | static: size-expression 357 size-expression: * | integer-expression. */ 358 OMP_CLAUSE_GANG, 359 360 /* OpenACC clause: async [(integer-expression)]. */ 361 OMP_CLAUSE_ASYNC, 362 363 /* OpenACC clause: wait [(integer-expression-list)]. */ 364 OMP_CLAUSE_WAIT, 365 366 /* OpenACC clause: auto. */ 367 OMP_CLAUSE_AUTO, 368 369 /* OpenACC clause: seq. */ 370 OMP_CLAUSE_SEQ, 371 372 /* Internal clause: temporary for combined loops expansion. */ 373 OMP_CLAUSE__LOOPTEMP_, 374 375 /* Internal clause: temporary for task reductions. */ 376 OMP_CLAUSE__REDUCTEMP_, 377 378 /* Internal clause: temporary for lastprivate(conditional:). */ 379 OMP_CLAUSE__CONDTEMP_, 380 381 /* Internal clause: temporary for inscan reductions. */ 382 OMP_CLAUSE__SCANTEMP_, 383 384 /* OpenACC/OpenMP clause: if (scalar-expression). */ 385 OMP_CLAUSE_IF, 386 387 /* OpenMP clause: num_threads (integer-expression). */ 388 OMP_CLAUSE_NUM_THREADS, 389 390 /* OpenMP clause: schedule. */ 391 OMP_CLAUSE_SCHEDULE, 392 393 /* OpenMP clause: nowait. */ 394 OMP_CLAUSE_NOWAIT, 395 396 /* OpenMP clause: ordered [(constant-integer-expression)]. */ 397 OMP_CLAUSE_ORDERED, 398 399 /* OpenACC/OpenMP clause: default. */ 400 OMP_CLAUSE_DEFAULT, 401 402 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */ 403 OMP_CLAUSE_COLLAPSE, 404 405 /* OpenMP clause: untied. */ 406 OMP_CLAUSE_UNTIED, 407 408 /* OpenMP clause: final (scalar-expression). */ 409 OMP_CLAUSE_FINAL, 410 411 /* OpenMP clause: mergeable. */ 412 OMP_CLAUSE_MERGEABLE, 413 414 /* OpenMP clause: device (integer-expression). */ 415 OMP_CLAUSE_DEVICE, 416 417 /* OpenMP clause: dist_schedule (static[:chunk-size]). */ 418 OMP_CLAUSE_DIST_SCHEDULE, 419 420 /* OpenMP clause: inbranch. */ 421 OMP_CLAUSE_INBRANCH, 422 423 /* OpenMP clause: notinbranch. */ 424 OMP_CLAUSE_NOTINBRANCH, 425 426 /* OpenMP clause: num_teams(integer-expression). */ 427 OMP_CLAUSE_NUM_TEAMS, 428 429 /* OpenMP clause: thread_limit(integer-expression). */ 430 OMP_CLAUSE_THREAD_LIMIT, 431 432 /* OpenMP clause: proc_bind ({master,close,spread}). */ 433 OMP_CLAUSE_PROC_BIND, 434 435 /* OpenMP clause: safelen (constant-integer-expression). */ 436 OMP_CLAUSE_SAFELEN, 437 438 /* OpenMP clause: simdlen (constant-integer-expression). */ 439 OMP_CLAUSE_SIMDLEN, 440 441 /* OpenMP clause: device_type ({host,nohost,any}). */ 442 OMP_CLAUSE_DEVICE_TYPE, 443 444 /* OpenMP clause: for. */ 445 OMP_CLAUSE_FOR, 446 447 /* OpenMP clause: parallel. */ 448 OMP_CLAUSE_PARALLEL, 449 450 /* OpenMP clause: sections. */ 451 OMP_CLAUSE_SECTIONS, 452 453 /* OpenMP clause: taskgroup. */ 454 OMP_CLAUSE_TASKGROUP, 455 456 /* OpenMP clause: priority (integer-expression). */ 457 OMP_CLAUSE_PRIORITY, 458 459 /* OpenMP clause: grainsize (integer-expression). */ 460 OMP_CLAUSE_GRAINSIZE, 461 462 /* OpenMP clause: num_tasks (integer-expression). */ 463 OMP_CLAUSE_NUM_TASKS, 464 465 /* OpenMP clause: nogroup. */ 466 OMP_CLAUSE_NOGROUP, 467 468 /* OpenMP clause: threads. */ 469 OMP_CLAUSE_THREADS, 470 471 /* OpenMP clause: simd. */ 472 OMP_CLAUSE_SIMD, 473 474 /* OpenMP clause: hint (integer-expression). */ 475 OMP_CLAUSE_HINT, 476 477 /* OpenMP clause: defaultmap (tofrom: scalar). */ 478 OMP_CLAUSE_DEFAULTMAP, 479 480 /* OpenMP clause: order (concurrent). */ 481 OMP_CLAUSE_ORDER, 482 483 /* OpenMP clause: bind (binding). */ 484 OMP_CLAUSE_BIND, 485 486 /* OpenMP clause: filter (integer-expression). */ 487 OMP_CLAUSE_FILTER, 488 489 /* Internally used only clause, holding SIMD uid. */ 490 OMP_CLAUSE__SIMDUID_, 491 492 /* Internally used only clause, flag whether this is SIMT simd 493 loop or not. */ 494 OMP_CLAUSE__SIMT_, 495 496 /* OpenACC clause: independent. */ 497 OMP_CLAUSE_INDEPENDENT, 498 499 /* OpenACC clause: worker [( [num:] integer-expression)]. */ 500 OMP_CLAUSE_WORKER, 501 502 /* OpenACC clause: vector [( [length:] integer-expression)]. */ 503 OMP_CLAUSE_VECTOR, 504 505 /* OpenACC clause: num_gangs (integer-expression). */ 506 OMP_CLAUSE_NUM_GANGS, 507 508 /* OpenACC clause: num_workers (integer-expression). */ 509 OMP_CLAUSE_NUM_WORKERS, 510 511 /* OpenACC clause: vector_length (integer-expression). */ 512 OMP_CLAUSE_VECTOR_LENGTH, 513 514 /* OpenACC clause: tile ( size-expr-list ). */ 515 OMP_CLAUSE_TILE, 516 517 /* OpenACC clause: if_present. */ 518 OMP_CLAUSE_IF_PRESENT, 519 520 /* OpenACC clause: finalize. */ 521 OMP_CLAUSE_FINALIZE, 522 523 /* OpenACC clause: nohost. */ 524 OMP_CLAUSE_NOHOST, 525 }; 526 527 #undef DEFTREESTRUCT 528 #define DEFTREESTRUCT(ENUM, NAME) ENUM, 529 enum tree_node_structure_enum { 530 #include "treestruct.def" 531 LAST_TS_ENUM 532 }; 533 #undef DEFTREESTRUCT 534 535 enum omp_clause_schedule_kind { 536 OMP_CLAUSE_SCHEDULE_STATIC, 537 OMP_CLAUSE_SCHEDULE_DYNAMIC, 538 OMP_CLAUSE_SCHEDULE_GUIDED, 539 OMP_CLAUSE_SCHEDULE_AUTO, 540 OMP_CLAUSE_SCHEDULE_RUNTIME, 541 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1, 542 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3), 543 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4), 544 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1 545 }; 546 547 enum omp_clause_default_kind { 548 OMP_CLAUSE_DEFAULT_UNSPECIFIED, 549 OMP_CLAUSE_DEFAULT_SHARED, 550 OMP_CLAUSE_DEFAULT_NONE, 551 OMP_CLAUSE_DEFAULT_PRIVATE, 552 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE, 553 OMP_CLAUSE_DEFAULT_PRESENT, 554 OMP_CLAUSE_DEFAULT_LAST 555 }; 556 557 enum omp_clause_defaultmap_kind { 558 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED, 559 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR, 560 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE, 561 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE, 562 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER, 563 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK = 7, 564 OMP_CLAUSE_DEFAULTMAP_ALLOC = 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 565 OMP_CLAUSE_DEFAULTMAP_TO = 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 566 OMP_CLAUSE_DEFAULTMAP_FROM = 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 567 OMP_CLAUSE_DEFAULTMAP_TOFROM = 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 568 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE 569 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 570 OMP_CLAUSE_DEFAULTMAP_NONE = 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 571 OMP_CLAUSE_DEFAULTMAP_DEFAULT 572 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1), 573 OMP_CLAUSE_DEFAULTMAP_MASK = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1) 574 }; 575 576 enum omp_clause_bind_kind { 577 OMP_CLAUSE_BIND_TEAMS, 578 OMP_CLAUSE_BIND_PARALLEL, 579 OMP_CLAUSE_BIND_THREAD 580 }; 581 582 /* memory-order-clause on OpenMP atomic/flush constructs or 583 argument of atomic_default_mem_order clause. */ 584 enum omp_memory_order { 585 OMP_MEMORY_ORDER_UNSPECIFIED, 586 OMP_MEMORY_ORDER_RELAXED, 587 OMP_MEMORY_ORDER_ACQUIRE, 588 OMP_MEMORY_ORDER_RELEASE, 589 OMP_MEMORY_ORDER_ACQ_REL, 590 OMP_MEMORY_ORDER_SEQ_CST, 591 OMP_MEMORY_ORDER_MASK = 7, 592 OMP_FAIL_MEMORY_ORDER_UNSPECIFIED = OMP_MEMORY_ORDER_UNSPECIFIED * 8, 593 OMP_FAIL_MEMORY_ORDER_RELAXED = OMP_MEMORY_ORDER_RELAXED * 8, 594 OMP_FAIL_MEMORY_ORDER_ACQUIRE = OMP_MEMORY_ORDER_ACQUIRE * 8, 595 OMP_FAIL_MEMORY_ORDER_RELEASE = OMP_MEMORY_ORDER_RELEASE * 8, 596 OMP_FAIL_MEMORY_ORDER_ACQ_REL = OMP_MEMORY_ORDER_ACQ_REL * 8, 597 OMP_FAIL_MEMORY_ORDER_SEQ_CST = OMP_MEMORY_ORDER_SEQ_CST * 8, 598 OMP_FAIL_MEMORY_ORDER_MASK = OMP_MEMORY_ORDER_MASK * 8 599 }; 600 #define OMP_FAIL_MEMORY_ORDER_SHIFT 3 601 602 /* There is a TYPE_QUAL value for each type qualifier. They can be 603 combined by bitwise-or to form the complete set of qualifiers for a 604 type. */ 605 enum cv_qualifier { 606 TYPE_UNQUALIFIED = 0x0, 607 TYPE_QUAL_CONST = 0x1, 608 TYPE_QUAL_VOLATILE = 0x2, 609 TYPE_QUAL_RESTRICT = 0x4, 610 TYPE_QUAL_ATOMIC = 0x8 611 }; 612 613 /* Standard named or nameless data types of the C compiler. */ 614 enum tree_index { 615 TI_ERROR_MARK, 616 TI_INTQI_TYPE, 617 TI_INTHI_TYPE, 618 TI_INTSI_TYPE, 619 TI_INTDI_TYPE, 620 TI_INTTI_TYPE, 621 622 TI_UINTQI_TYPE, 623 TI_UINTHI_TYPE, 624 TI_UINTSI_TYPE, 625 TI_UINTDI_TYPE, 626 TI_UINTTI_TYPE, 627 628 TI_ATOMICQI_TYPE, 629 TI_ATOMICHI_TYPE, 630 TI_ATOMICSI_TYPE, 631 TI_ATOMICDI_TYPE, 632 TI_ATOMICTI_TYPE, 633 634 TI_UINT16_TYPE, 635 TI_UINT32_TYPE, 636 TI_UINT64_TYPE, 637 TI_UINT128_TYPE, 638 639 TI_VOID, 640 641 TI_INTEGER_ZERO, 642 TI_INTEGER_ONE, 643 TI_INTEGER_THREE, 644 TI_INTEGER_MINUS_ONE, 645 TI_NULL_POINTER, 646 647 TI_SIZE_ZERO, 648 TI_SIZE_ONE, 649 650 TI_BITSIZE_ZERO, 651 TI_BITSIZE_ONE, 652 TI_BITSIZE_UNIT, 653 654 TI_PUBLIC, 655 TI_PROTECTED, 656 TI_PRIVATE, 657 658 TI_BOOLEAN_FALSE, 659 TI_BOOLEAN_TRUE, 660 661 TI_FLOAT_TYPE, 662 TI_DOUBLE_TYPE, 663 TI_LONG_DOUBLE_TYPE, 664 665 /* The _FloatN and _FloatNx types must be consecutive, and in the 666 same sequence as the corresponding complex types, which must also 667 be consecutive; _FloatN must come before _FloatNx; the order must 668 also be the same as in the floatn_nx_types array and the RID_* 669 values in c-common.h. This is so that iterations over these 670 types work as intended. */ 671 TI_FLOAT16_TYPE, 672 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE, 673 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE, 674 TI_FLOAT32_TYPE, 675 TI_FLOAT64_TYPE, 676 TI_FLOAT128_TYPE, 677 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE, 678 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1) 679 TI_FLOAT32X_TYPE, 680 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE, 681 TI_FLOAT64X_TYPE, 682 TI_FLOAT128X_TYPE, 683 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE, 684 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE, 685 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1) 686 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \ 687 - TI_FLOATN_NX_TYPE_FIRST \ 688 + 1) 689 690 /* Put the complex types after their component types, so that in (sequential) 691 tree streaming we can assert that their component types have already been 692 handled (see tree-streamer.cc:record_common_node). */ 693 TI_COMPLEX_INTEGER_TYPE, 694 TI_COMPLEX_FLOAT_TYPE, 695 TI_COMPLEX_DOUBLE_TYPE, 696 TI_COMPLEX_LONG_DOUBLE_TYPE, 697 698 TI_COMPLEX_FLOAT16_TYPE, 699 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE, 700 TI_COMPLEX_FLOAT32_TYPE, 701 TI_COMPLEX_FLOAT64_TYPE, 702 TI_COMPLEX_FLOAT128_TYPE, 703 TI_COMPLEX_FLOAT32X_TYPE, 704 TI_COMPLEX_FLOAT64X_TYPE, 705 TI_COMPLEX_FLOAT128X_TYPE, 706 707 TI_FLOAT_PTR_TYPE, 708 TI_DOUBLE_PTR_TYPE, 709 TI_LONG_DOUBLE_PTR_TYPE, 710 TI_INTEGER_PTR_TYPE, 711 712 TI_VOID_TYPE, 713 TI_PTR_TYPE, 714 TI_CONST_PTR_TYPE, 715 TI_SIZE_TYPE, 716 TI_PID_TYPE, 717 TI_PTRDIFF_TYPE, 718 TI_VA_LIST_TYPE, 719 TI_VA_LIST_GPR_COUNTER_FIELD, 720 TI_VA_LIST_FPR_COUNTER_FIELD, 721 TI_BOOLEAN_TYPE, 722 TI_FILEPTR_TYPE, 723 TI_CONST_TM_PTR_TYPE, 724 TI_FENV_T_PTR_TYPE, 725 TI_CONST_FENV_T_PTR_TYPE, 726 TI_FEXCEPT_T_PTR_TYPE, 727 TI_CONST_FEXCEPT_T_PTR_TYPE, 728 TI_POINTER_SIZED_TYPE, 729 730 TI_DFLOAT32_TYPE, 731 TI_DFLOAT64_TYPE, 732 TI_DFLOAT128_TYPE, 733 734 TI_VOID_LIST_NODE, 735 736 TI_MAIN_IDENTIFIER, 737 738 TI_SAT_SFRACT_TYPE, 739 TI_SAT_FRACT_TYPE, 740 TI_SAT_LFRACT_TYPE, 741 TI_SAT_LLFRACT_TYPE, 742 TI_SAT_USFRACT_TYPE, 743 TI_SAT_UFRACT_TYPE, 744 TI_SAT_ULFRACT_TYPE, 745 TI_SAT_ULLFRACT_TYPE, 746 TI_SFRACT_TYPE, 747 TI_FRACT_TYPE, 748 TI_LFRACT_TYPE, 749 TI_LLFRACT_TYPE, 750 TI_USFRACT_TYPE, 751 TI_UFRACT_TYPE, 752 TI_ULFRACT_TYPE, 753 TI_ULLFRACT_TYPE, 754 TI_SAT_SACCUM_TYPE, 755 TI_SAT_ACCUM_TYPE, 756 TI_SAT_LACCUM_TYPE, 757 TI_SAT_LLACCUM_TYPE, 758 TI_SAT_USACCUM_TYPE, 759 TI_SAT_UACCUM_TYPE, 760 TI_SAT_ULACCUM_TYPE, 761 TI_SAT_ULLACCUM_TYPE, 762 TI_SACCUM_TYPE, 763 TI_ACCUM_TYPE, 764 TI_LACCUM_TYPE, 765 TI_LLACCUM_TYPE, 766 TI_USACCUM_TYPE, 767 TI_UACCUM_TYPE, 768 TI_ULACCUM_TYPE, 769 TI_ULLACCUM_TYPE, 770 TI_QQ_TYPE, 771 TI_HQ_TYPE, 772 TI_SQ_TYPE, 773 TI_DQ_TYPE, 774 TI_TQ_TYPE, 775 TI_UQQ_TYPE, 776 TI_UHQ_TYPE, 777 TI_USQ_TYPE, 778 TI_UDQ_TYPE, 779 TI_UTQ_TYPE, 780 TI_SAT_QQ_TYPE, 781 TI_SAT_HQ_TYPE, 782 TI_SAT_SQ_TYPE, 783 TI_SAT_DQ_TYPE, 784 TI_SAT_TQ_TYPE, 785 TI_SAT_UQQ_TYPE, 786 TI_SAT_UHQ_TYPE, 787 TI_SAT_USQ_TYPE, 788 TI_SAT_UDQ_TYPE, 789 TI_SAT_UTQ_TYPE, 790 TI_HA_TYPE, 791 TI_SA_TYPE, 792 TI_DA_TYPE, 793 TI_TA_TYPE, 794 TI_UHA_TYPE, 795 TI_USA_TYPE, 796 TI_UDA_TYPE, 797 TI_UTA_TYPE, 798 TI_SAT_HA_TYPE, 799 TI_SAT_SA_TYPE, 800 TI_SAT_DA_TYPE, 801 TI_SAT_TA_TYPE, 802 TI_SAT_UHA_TYPE, 803 TI_SAT_USA_TYPE, 804 TI_SAT_UDA_TYPE, 805 TI_SAT_UTA_TYPE, 806 807 TI_MODULE_HWM, 808 /* Nodes below here change during compilation, and should therefore 809 not be in the C++ module's global tree table. */ 810 811 TI_OPTIMIZATION_DEFAULT, 812 TI_OPTIMIZATION_CURRENT, 813 TI_TARGET_OPTION_DEFAULT, 814 TI_TARGET_OPTION_CURRENT, 815 TI_CURRENT_TARGET_PRAGMA, 816 TI_CURRENT_OPTIMIZE_PRAGMA, 817 818 TI_CHREC_DONT_KNOW, 819 TI_CHREC_KNOWN, 820 821 TI_MAX 822 }; 823 824 /* An enumeration of the standard C integer types. These must be 825 ordered so that shorter types appear before longer ones, and so 826 that signed types appear before unsigned ones, for the correct 827 functioning of interpret_integer() in c-lex.cc. */ 828 enum integer_type_kind { 829 itk_char, 830 itk_signed_char, 831 itk_unsigned_char, 832 itk_short, 833 itk_unsigned_short, 834 itk_int, 835 itk_unsigned_int, 836 itk_long, 837 itk_unsigned_long, 838 itk_long_long, 839 itk_unsigned_long_long, 840 841 itk_intN_0, 842 itk_unsigned_intN_0, 843 itk_intN_1, 844 itk_unsigned_intN_1, 845 itk_intN_2, 846 itk_unsigned_intN_2, 847 itk_intN_3, 848 itk_unsigned_intN_3, 849 850 itk_none 851 }; 852 853 /* A pointer-to-function member type looks like: 854 855 struct { 856 __P __pfn; 857 ptrdiff_t __delta; 858 }; 859 860 If __pfn is NULL, it is a NULL pointer-to-member-function. 861 862 (Because the vtable is always the first thing in the object, we 863 don't need its offset.) If the function is virtual, then PFN is 864 one plus twice the index into the vtable; otherwise, it is just a 865 pointer to the function. 866 867 Unfortunately, using the lowest bit of PFN doesn't work in 868 architectures that don't impose alignment requirements on function 869 addresses, or that use the lowest bit to tell one ISA from another, 870 for example. For such architectures, we use the lowest bit of 871 DELTA instead of the lowest bit of the PFN, and DELTA will be 872 multiplied by 2. */ 873 enum ptrmemfunc_vbit_where_t { 874 ptrmemfunc_vbit_in_pfn, 875 ptrmemfunc_vbit_in_delta 876 }; 877 878 /* Flags that may be passed in the third argument of decl_attributes, and 879 to handler functions for attributes. */ 880 enum attribute_flags { 881 /* The type passed in is the type of a DECL, and any attributes that 882 should be passed in again to be applied to the DECL rather than the 883 type should be returned. */ 884 ATTR_FLAG_DECL_NEXT = 1, 885 /* The type passed in is a function return type, and any attributes that 886 should be passed in again to be applied to the function type rather 887 than the return type should be returned. */ 888 ATTR_FLAG_FUNCTION_NEXT = 2, 889 /* The type passed in is an array element type, and any attributes that 890 should be passed in again to be applied to the array type rather 891 than the element type should be returned. */ 892 ATTR_FLAG_ARRAY_NEXT = 4, 893 /* The type passed in is a structure, union or enumeration type being 894 created, and should be modified in place. */ 895 ATTR_FLAG_TYPE_IN_PLACE = 8, 896 /* The attributes are being applied by default to a library function whose 897 name indicates known behavior, and should be silently ignored if they 898 are not in fact compatible with the function type. */ 899 ATTR_FLAG_BUILT_IN = 16, 900 /* A given attribute has been parsed as a C++-11 attribute. */ 901 ATTR_FLAG_CXX11 = 32, 902 /* The attribute handler is being invoked with an internal argument 903 that may not otherwise be valid when specified in source code. */ 904 ATTR_FLAG_INTERNAL = 64 905 }; 906 907 /* Types used to represent sizes. */ 908 enum size_type_kind { 909 stk_sizetype, /* Normal representation of sizes in bytes. */ 910 stk_ssizetype, /* Signed representation of sizes in bytes. */ 911 stk_bitsizetype, /* Normal representation of sizes in bits. */ 912 stk_sbitsizetype, /* Signed representation of sizes in bits. */ 913 stk_type_kind_last 914 }; 915 916 /* Flags controlling operand_equal_p() behavior. */ 917 enum operand_equal_flag { 918 OEP_ONLY_CONST = 1, 919 OEP_PURE_SAME = 2, 920 OEP_MATCH_SIDE_EFFECTS = 4, 921 OEP_ADDRESS_OF = 8, 922 /* Internal within operand_equal_p: */ 923 OEP_NO_HASH_CHECK = 16, 924 /* Internal within inchash::add_expr: */ 925 OEP_HASH_CHECK = 32, 926 /* Makes operand_equal_p handle more expressions: */ 927 OEP_LEXICOGRAPHIC = 64, 928 OEP_BITWISE = 128, 929 /* For OEP_ADDRESS_OF of COMPONENT_REFs, only consider same fields as 930 equivalent rather than also different fields with the same offset. */ 931 OEP_ADDRESS_OF_SAME_FIELD = 256, 932 /* In conjunction with OEP_LEXICOGRAPHIC considers names of declarations 933 of the same kind. Used to compare VLA bounds involving parameters 934 across redeclarations of the same function. */ 935 OEP_DECL_NAME = 512 936 }; 937 938 /* Enum and arrays used for tree allocation stats. 939 Keep in sync with tree.cc:tree_node_kind_names. */ 940 enum tree_node_kind { 941 d_kind, 942 t_kind, 943 b_kind, 944 s_kind, 945 r_kind, 946 e_kind, 947 c_kind, 948 id_kind, 949 vec_kind, 950 binfo_kind, 951 ssa_name_kind, 952 constr_kind, 953 x_kind, 954 lang_decl, 955 lang_type, 956 omp_clause_kind, 957 all_kinds 958 }; 959 960 enum annot_expr_kind { 961 annot_expr_ivdep_kind, 962 annot_expr_unroll_kind, 963 annot_expr_no_vector_kind, 964 annot_expr_vector_kind, 965 annot_expr_parallel_kind, 966 annot_expr_kind_last 967 }; 968 969 /* The kind of a TREE_CLOBBER_P CONSTRUCTOR node. */ 970 enum clobber_kind { 971 /* Unspecified, this clobber acts as a store of an undefined value. */ 972 CLOBBER_UNDEF, 973 /* This clobber ends the lifetime of the storage. */ 974 CLOBBER_EOL, 975 CLOBBER_LAST 976 }; 977 978 /*--------------------------------------------------------------------------- 979 Type definitions 980 ---------------------------------------------------------------------------*/ 981 /* When processing aliases at the symbol table level, we need the 982 declaration of target. For this reason we need to queue aliases and 983 process them after all declarations has been produced. */ 984 struct GTY(()) alias_pair { 985 tree decl; 986 tree target; 987 }; 988 989 /* An initialization priority. */ 990 typedef unsigned short priority_type; 991 992 /* The type of a callback function for walking over tree structure. */ 993 typedef tree (*walk_tree_fn) (tree *, int *, void *); 994 995 /* The type of a callback function that represents a custom walk_tree. */ 996 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *), 997 void *, hash_set<tree> *); 998 999 1000 /*--------------------------------------------------------------------------- 1001 Main data structures 1002 ---------------------------------------------------------------------------*/ 1003 /* A tree node can represent a data type, a variable, an expression 1004 or a statement. Each node has a TREE_CODE which says what kind of 1005 thing it represents. Some common codes are: 1006 INTEGER_TYPE -- represents a type of integers. 1007 ARRAY_TYPE -- represents a type of pointer. 1008 VAR_DECL -- represents a declared variable. 1009 INTEGER_CST -- represents a constant integer value. 1010 PLUS_EXPR -- represents a sum (an expression). 1011 1012 As for the contents of a tree node: there are some fields 1013 that all nodes share. Each TREE_CODE has various special-purpose 1014 fields as well. The fields of a node are never accessed directly, 1015 always through accessor macros. */ 1016 1017 /* Every kind of tree node starts with this structure, 1018 so all nodes have these fields. 1019 1020 See the accessor macros, defined below, for documentation of the 1021 fields, and the table below which connects the fields and the 1022 accessor macros. */ 1023 1024 struct GTY(()) tree_base { 1025 ENUM_BITFIELD(tree_code) code : 16; 1026 1027 unsigned side_effects_flag : 1; 1028 unsigned constant_flag : 1; 1029 unsigned addressable_flag : 1; 1030 unsigned volatile_flag : 1; 1031 unsigned readonly_flag : 1; 1032 unsigned asm_written_flag: 1; 1033 unsigned nowarning_flag : 1; 1034 unsigned visited : 1; 1035 1036 unsigned used_flag : 1; 1037 unsigned nothrow_flag : 1; 1038 unsigned static_flag : 1; 1039 unsigned public_flag : 1; 1040 unsigned private_flag : 1; 1041 unsigned protected_flag : 1; 1042 unsigned deprecated_flag : 1; 1043 unsigned default_def_flag : 1; 1044 1045 union { 1046 /* The bits in the following structure should only be used with 1047 accessor macros that constrain inputs with tree checking. */ 1048 struct { 1049 unsigned lang_flag_0 : 1; 1050 unsigned lang_flag_1 : 1; 1051 unsigned lang_flag_2 : 1; 1052 unsigned lang_flag_3 : 1; 1053 unsigned lang_flag_4 : 1; 1054 unsigned lang_flag_5 : 1; 1055 unsigned lang_flag_6 : 1; 1056 unsigned saturating_flag : 1; 1057 1058 unsigned unsigned_flag : 1; 1059 unsigned packed_flag : 1; 1060 unsigned user_align : 1; 1061 unsigned nameless_flag : 1; 1062 unsigned atomic_flag : 1; 1063 unsigned unavailable_flag : 1; 1064 unsigned spare0 : 2; 1065 1066 unsigned spare1 : 8; 1067 1068 /* This field is only used with TREE_TYPE nodes; the only reason it is 1069 present in tree_base instead of tree_type is to save space. The size 1070 of the field must be large enough to hold addr_space_t values. 1071 For CONSTRUCTOR nodes this holds the clobber_kind enum. */ 1072 unsigned address_space : 8; 1073 } bits; 1074 1075 /* The following fields are present in tree_base to save space. The 1076 nodes using them do not require any of the flags above and so can 1077 make better use of the 4-byte sized word. */ 1078 1079 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */ 1080 struct { 1081 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 1082 its native precision. */ 1083 unsigned char unextended; 1084 1085 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to 1086 wider precisions based on its TYPE_SIGN. */ 1087 unsigned char extended; 1088 1089 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 1090 offset_int precision, with smaller integers being extended 1091 according to their TYPE_SIGN. This is equal to one of the two 1092 fields above but is cached for speed. */ 1093 unsigned char offset; 1094 } int_length; 1095 1096 /* VEC length. This field is only used with TREE_VEC. */ 1097 int length; 1098 1099 /* This field is only used with VECTOR_CST. */ 1100 struct { 1101 /* The value of VECTOR_CST_LOG2_NPATTERNS. */ 1102 unsigned int log2_npatterns : 8; 1103 1104 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */ 1105 unsigned int nelts_per_pattern : 8; 1106 1107 /* For future expansion. */ 1108 unsigned int unused : 16; 1109 } vector_cst; 1110 1111 /* SSA version number. This field is only used with SSA_NAME. */ 1112 unsigned int version; 1113 1114 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */ 1115 unsigned int chrec_var; 1116 1117 /* Internal function code. */ 1118 enum internal_fn ifn; 1119 1120 /* OMP_ATOMIC* memory order. */ 1121 enum omp_memory_order omp_atomic_memory_order; 1122 1123 /* The following two fields are used for MEM_REF and TARGET_MEM_REF 1124 expression trees and specify known data non-dependences. For 1125 two memory references in a function they are known to not 1126 alias if dependence_info.clique are equal and dependence_info.base 1127 are distinct. Clique number zero means there is no information, 1128 clique number one is populated from function global information 1129 and thus needs no remapping on transforms like loop unrolling. */ 1130 struct { 1131 unsigned short clique; 1132 unsigned short base; 1133 } dependence_info; 1134 } GTY((skip(""))) u; 1135 }; 1136 1137 /* The following table lists the uses of each of the above flags and 1138 for which types of nodes they are defined. 1139 1140 addressable_flag: 1141 1142 TREE_ADDRESSABLE in 1143 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL 1144 SSA_NAME 1145 all types 1146 CONSTRUCTOR, IDENTIFIER_NODE 1147 STMT_EXPR 1148 1149 CALL_EXPR_TAILCALL in 1150 CALL_EXPR 1151 1152 CASE_LOW_SEEN in 1153 CASE_LABEL_EXPR 1154 1155 PREDICT_EXPR_OUTCOME in 1156 PREDICT_EXPR 1157 1158 OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE in 1159 OMP_CLAUSE 1160 1161 static_flag: 1162 1163 TREE_STATIC in 1164 VAR_DECL, FUNCTION_DECL 1165 CONSTRUCTOR 1166 1167 TREE_NO_TRAMPOLINE in 1168 ADDR_EXPR 1169 1170 BINFO_VIRTUAL_P in 1171 TREE_BINFO 1172 1173 TREE_SYMBOL_REFERENCED in 1174 IDENTIFIER_NODE 1175 1176 CLEANUP_EH_ONLY in 1177 TARGET_EXPR, WITH_CLEANUP_EXPR 1178 1179 TRY_CATCH_IS_CLEANUP in 1180 TRY_CATCH_EXPR 1181 1182 ASM_INPUT_P in 1183 ASM_EXPR 1184 1185 TYPE_REF_CAN_ALIAS_ALL in 1186 POINTER_TYPE, REFERENCE_TYPE 1187 1188 CASE_HIGH_SEEN in 1189 CASE_LABEL_EXPR 1190 1191 ENUM_IS_SCOPED in 1192 ENUMERAL_TYPE 1193 1194 TRANSACTION_EXPR_OUTER in 1195 TRANSACTION_EXPR 1196 1197 SSA_NAME_ANTI_RANGE_P in 1198 SSA_NAME 1199 1200 MUST_TAIL_CALL in 1201 CALL_EXPR 1202 1203 public_flag: 1204 1205 TREE_OVERFLOW in 1206 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST 1207 1208 TREE_PUBLIC in 1209 VAR_DECL, FUNCTION_DECL 1210 IDENTIFIER_NODE 1211 1212 CONSTRUCTOR_NO_CLEARING in 1213 CONSTRUCTOR 1214 1215 ASM_VOLATILE_P in 1216 ASM_EXPR 1217 1218 CALL_EXPR_VA_ARG_PACK in 1219 CALL_EXPR 1220 1221 TYPE_CACHED_VALUES_P in 1222 all types 1223 1224 SAVE_EXPR_RESOLVED_P in 1225 SAVE_EXPR 1226 1227 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in 1228 OMP_CLAUSE_LASTPRIVATE 1229 1230 OMP_CLAUSE_PRIVATE_DEBUG in 1231 OMP_CLAUSE_PRIVATE 1232 1233 OMP_CLAUSE_LINEAR_NO_COPYIN in 1234 OMP_CLAUSE_LINEAR 1235 1236 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in 1237 OMP_CLAUSE_MAP 1238 1239 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in 1240 OMP_CLAUSE_{,TASK_,IN_}REDUCTION 1241 1242 OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in 1243 OMP_CLAUSE_USE_DEVICE_PTR 1244 1245 TRANSACTION_EXPR_RELAXED in 1246 TRANSACTION_EXPR 1247 1248 FALLTHROUGH_LABEL_P in 1249 LABEL_DECL 1250 1251 SSA_NAME_IS_VIRTUAL_OPERAND in 1252 SSA_NAME 1253 1254 EXPR_LOCATION_WRAPPER_P in 1255 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR 1256 1257 private_flag: 1258 1259 TREE_PRIVATE in 1260 all decls 1261 1262 CALL_EXPR_RETURN_SLOT_OPT in 1263 CALL_EXPR 1264 1265 OMP_SECTION_LAST in 1266 OMP_SECTION 1267 1268 OMP_PARALLEL_COMBINED in 1269 OMP_PARALLEL 1270 1271 OMP_CLAUSE_PRIVATE_OUTER_REF in 1272 OMP_CLAUSE_PRIVATE 1273 1274 OMP_CLAUSE_LINEAR_NO_COPYOUT in 1275 OMP_CLAUSE_LINEAR 1276 1277 TYPE_REF_IS_RVALUE in 1278 REFERENCE_TYPE 1279 1280 ENUM_IS_OPAQUE in 1281 ENUMERAL_TYPE 1282 1283 protected_flag: 1284 1285 TREE_PROTECTED in 1286 BLOCK 1287 all decls 1288 1289 CALL_FROM_THUNK_P and 1290 CALL_ALLOCA_FOR_VAR_P and 1291 CALL_FROM_NEW_OR_DELETE_P in 1292 CALL_EXPR 1293 1294 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in 1295 OMP_CLAUSE_LINEAR 1296 1297 ASM_INLINE_P in 1298 ASM_EXPR 1299 1300 side_effects_flag: 1301 1302 TREE_SIDE_EFFECTS in 1303 all expressions 1304 all decls 1305 all constants 1306 1307 FORCED_LABEL in 1308 LABEL_DECL 1309 1310 volatile_flag: 1311 1312 TREE_THIS_VOLATILE in 1313 all expressions 1314 all decls 1315 1316 TYPE_VOLATILE in 1317 all types 1318 1319 readonly_flag: 1320 1321 TREE_READONLY in 1322 all expressions 1323 all decls 1324 1325 TYPE_READONLY in 1326 all types 1327 1328 constant_flag: 1329 1330 TREE_CONSTANT in 1331 all expressions 1332 all decls 1333 all constants 1334 1335 TYPE_SIZES_GIMPLIFIED in 1336 all types 1337 1338 unsigned_flag: 1339 1340 TYPE_UNSIGNED in 1341 all types 1342 1343 DECL_UNSIGNED in 1344 all decls 1345 1346 asm_written_flag: 1347 1348 TREE_ASM_WRITTEN in 1349 VAR_DECL, FUNCTION_DECL, TYPE_DECL 1350 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE 1351 BLOCK, STRING_CST 1352 1353 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in 1354 SSA_NAME 1355 1356 used_flag: 1357 1358 TREE_USED in 1359 all expressions 1360 all decls 1361 IDENTIFIER_NODE 1362 1363 nothrow_flag: 1364 1365 TREE_NOTHROW in 1366 CALL_EXPR 1367 FUNCTION_DECL 1368 1369 TREE_THIS_NOTRAP in 1370 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF 1371 1372 SSA_NAME_IN_FREE_LIST in 1373 SSA_NAME 1374 1375 DECL_NONALIASED in 1376 VAR_DECL 1377 1378 deprecated_flag: 1379 1380 TREE_DEPRECATED in 1381 all decls 1382 all types 1383 1384 IDENTIFIER_TRANSPARENT_ALIAS in 1385 IDENTIFIER_NODE 1386 1387 SSA_NAME_POINTS_TO_READONLY_MEMORY in 1388 SSA_NAME 1389 1390 unavailable_flag: 1391 1392 TREE_UNAVAILABLE in 1393 all decls 1394 all types 1395 1396 visited: 1397 1398 TREE_VISITED in 1399 all trees (used liberally by many passes) 1400 1401 saturating_flag: 1402 1403 TYPE_REVERSE_STORAGE_ORDER in 1404 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE 1405 1406 TYPE_SATURATING in 1407 other types 1408 1409 VAR_DECL_IS_VIRTUAL_OPERAND in 1410 VAR_DECL 1411 1412 nowarning_flag: 1413 1414 TREE_NO_WARNING in 1415 all expressions 1416 all decls 1417 1418 TYPE_ARTIFICIAL in 1419 all types 1420 1421 default_def_flag: 1422 1423 TYPE_FINAL_P in 1424 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE 1425 1426 TYPE_VECTOR_OPAQUE in 1427 VECTOR_TYPE 1428 1429 SSA_NAME_IS_DEFAULT_DEF in 1430 SSA_NAME 1431 1432 DECL_NONLOCAL_FRAME in 1433 VAR_DECL 1434 1435 REF_REVERSE_STORAGE_ORDER in 1436 BIT_FIELD_REF, MEM_REF 1437 1438 FUNC_ADDR_BY_DESCRIPTOR in 1439 ADDR_EXPR 1440 1441 CALL_EXPR_BY_DESCRIPTOR in 1442 CALL_EXPR 1443 1444 */ 1445 1446 struct GTY(()) tree_typed { 1447 struct tree_base base; 1448 tree type; 1449 }; 1450 1451 struct GTY(()) tree_common { 1452 struct tree_typed typed; 1453 tree chain; 1454 }; 1455 1456 struct GTY(()) tree_int_cst { 1457 struct tree_typed typed; 1458 HOST_WIDE_INT val[1]; 1459 }; 1460 1461 1462 struct GTY(()) tree_real_cst { 1463 struct tree_typed typed; 1464 struct real_value * real_cst_ptr; 1465 }; 1466 1467 struct GTY(()) tree_fixed_cst { 1468 struct tree_typed typed; 1469 struct fixed_value * fixed_cst_ptr; 1470 }; 1471 1472 struct GTY(()) tree_string { 1473 struct tree_typed typed; 1474 int length; 1475 char str[1]; 1476 }; 1477 1478 struct GTY(()) tree_complex { 1479 struct tree_typed typed; 1480 tree real; 1481 tree imag; 1482 }; 1483 1484 struct GTY(()) tree_vector { 1485 struct tree_typed typed; 1486 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1]; 1487 }; 1488 1489 struct GTY(()) tree_poly_int_cst { 1490 struct tree_typed typed; 1491 tree coeffs[NUM_POLY_INT_COEFFS]; 1492 }; 1493 1494 struct GTY(()) tree_identifier { 1495 struct tree_common common; 1496 struct ht_identifier id; 1497 }; 1498 1499 struct GTY(()) tree_list { 1500 struct tree_common common; 1501 tree purpose; 1502 tree value; 1503 }; 1504 1505 struct GTY(()) tree_vec { 1506 struct tree_common common; 1507 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1]; 1508 }; 1509 1510 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the 1511 element. INDEX can optionally design the position of VALUE: in arrays, 1512 it is the index where VALUE has to be placed; in structures, it is the 1513 FIELD_DECL of the member. */ 1514 struct GTY(()) constructor_elt { 1515 tree index; 1516 tree value; 1517 }; 1518 1519 struct GTY(()) tree_constructor { 1520 struct tree_typed typed; 1521 vec<constructor_elt, va_gc> *elts; 1522 }; 1523 1524 enum omp_clause_depend_kind 1525 { 1526 OMP_CLAUSE_DEPEND_IN, 1527 OMP_CLAUSE_DEPEND_OUT, 1528 OMP_CLAUSE_DEPEND_INOUT, 1529 OMP_CLAUSE_DEPEND_MUTEXINOUTSET, 1530 OMP_CLAUSE_DEPEND_SOURCE, 1531 OMP_CLAUSE_DEPEND_SINK, 1532 OMP_CLAUSE_DEPEND_DEPOBJ, 1533 OMP_CLAUSE_DEPEND_LAST 1534 }; 1535 1536 enum omp_clause_proc_bind_kind 1537 { 1538 /* Numbers should match omp_proc_bind_t enum in omp.h. */ 1539 OMP_CLAUSE_PROC_BIND_FALSE = 0, 1540 OMP_CLAUSE_PROC_BIND_TRUE = 1, 1541 OMP_CLAUSE_PROC_BIND_PRIMARY = 2, 1542 OMP_CLAUSE_PROC_BIND_MASTER = 2, 1543 OMP_CLAUSE_PROC_BIND_CLOSE = 3, 1544 OMP_CLAUSE_PROC_BIND_SPREAD = 4, 1545 OMP_CLAUSE_PROC_BIND_LAST 1546 }; 1547 1548 enum omp_clause_device_type_kind 1549 { 1550 OMP_CLAUSE_DEVICE_TYPE_HOST = 1, 1551 OMP_CLAUSE_DEVICE_TYPE_NOHOST = 2, 1552 OMP_CLAUSE_DEVICE_TYPE_ANY = 3 1553 }; 1554 1555 enum omp_clause_linear_kind 1556 { 1557 OMP_CLAUSE_LINEAR_DEFAULT, 1558 OMP_CLAUSE_LINEAR_REF, 1559 OMP_CLAUSE_LINEAR_VAL, 1560 OMP_CLAUSE_LINEAR_UVAL 1561 }; 1562 1563 struct GTY(()) tree_exp { 1564 struct tree_typed typed; 1565 location_t locus; 1566 tree GTY ((special ("tree_exp"), 1567 desc ("TREE_CODE ((tree) &%0)"))) 1568 operands[1]; 1569 }; 1570 1571 /* Immediate use linking structure. This structure is used for maintaining 1572 a doubly linked list of uses of an SSA_NAME. */ 1573 struct GTY(()) ssa_use_operand_t { 1574 struct ssa_use_operand_t* GTY((skip(""))) prev; 1575 struct ssa_use_operand_t* GTY((skip(""))) next; 1576 /* Immediate uses for a given SSA name are maintained as a cyclic 1577 list. To recognize the root of this list, the location field 1578 needs to point to the original SSA name. Since statements and 1579 SSA names are of different data types, we need this union. See 1580 the explanation in struct imm_use_iterator. */ 1581 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc; 1582 tree *GTY((skip(""))) use; 1583 }; 1584 1585 struct GTY(()) tree_ssa_name { 1586 struct tree_typed typed; 1587 1588 /* _DECL wrapped by this SSA name. */ 1589 tree var; 1590 1591 /* Statement that defines this SSA name. */ 1592 gimple *def_stmt; 1593 1594 /* Value range information. */ 1595 union ssa_name_info_type { 1596 /* Pointer attributes used for alias analysis. */ 1597 struct GTY ((tag ("0"))) ptr_info_def *ptr_info; 1598 /* Value range attributes used for zero/sign extension elimination. */ 1599 struct GTY ((tag ("1"))) range_info_def *range_info; 1600 } GTY ((desc ("%1.typed.type ?" \ 1601 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info; 1602 1603 /* Immediate uses list for this SSA_NAME. */ 1604 struct ssa_use_operand_t imm_uses; 1605 }; 1606 1607 struct GTY(()) phi_arg_d { 1608 /* imm_use MUST be the first element in struct because we do some 1609 pointer arithmetic with it. See phi_arg_index_from_use. */ 1610 struct ssa_use_operand_t imm_use; 1611 tree def; 1612 location_t locus; 1613 }; 1614 1615 struct GTY(()) tree_omp_clause { 1616 struct tree_common common; 1617 location_t locus; 1618 enum omp_clause_code code; 1619 union omp_clause_subcode { 1620 enum omp_clause_default_kind default_kind; 1621 enum omp_clause_schedule_kind schedule_kind; 1622 enum omp_clause_depend_kind depend_kind; 1623 /* See include/gomp-constants.h for enum gomp_map_kind's values. */ 1624 unsigned int map_kind; 1625 enum omp_clause_proc_bind_kind proc_bind_kind; 1626 enum tree_code reduction_code; 1627 enum omp_clause_linear_kind linear_kind; 1628 enum tree_code if_modifier; 1629 enum omp_clause_defaultmap_kind defaultmap_kind; 1630 enum omp_clause_bind_kind bind_kind; 1631 enum omp_clause_device_type_kind device_type_kind; 1632 } GTY ((skip)) subcode; 1633 1634 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's 1635 usage. */ 1636 gimple_seq gimple_reduction_init; 1637 gimple_seq gimple_reduction_merge; 1638 1639 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) 1640 ops[1]; 1641 }; 1642 1643 struct GTY(()) tree_block { 1644 struct tree_base base; 1645 tree chain; 1646 1647 unsigned block_num; 1648 1649 location_t locus; 1650 location_t end_locus; 1651 1652 tree vars; 1653 vec<tree, va_gc> *nonlocalized_vars; 1654 1655 tree subblocks; 1656 tree supercontext; 1657 tree abstract_origin; 1658 tree fragment_origin; 1659 tree fragment_chain; 1660 1661 /* Pointer to the DWARF lexical block. */ 1662 struct die_struct *die; 1663 }; 1664 1665 struct GTY(()) tree_type_common { 1666 struct tree_common common; 1667 tree size; 1668 tree size_unit; 1669 tree attributes; 1670 unsigned int uid; 1671 1672 unsigned int precision : 10; 1673 unsigned no_force_blk_flag : 1; 1674 unsigned needs_constructing_flag : 1; 1675 unsigned transparent_aggr_flag : 1; 1676 unsigned restrict_flag : 1; 1677 unsigned contains_placeholder_bits : 2; 1678 1679 ENUM_BITFIELD(machine_mode) mode : 8; 1680 1681 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE. 1682 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */ 1683 unsigned string_flag : 1; 1684 unsigned lang_flag_0 : 1; 1685 unsigned lang_flag_1 : 1; 1686 unsigned lang_flag_2 : 1; 1687 unsigned lang_flag_3 : 1; 1688 unsigned lang_flag_4 : 1; 1689 unsigned lang_flag_5 : 1; 1690 unsigned lang_flag_6 : 1; 1691 unsigned lang_flag_7 : 1; 1692 1693 /* TYPE_ALIGN in log2; this has to be large enough to hold values 1694 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT, 1695 the latter being usually the larger. For ELF it is 8<<28, 1696 so we need to store the value 32 (not 31, as we need the zero 1697 as well), hence six bits. */ 1698 unsigned align : 6; 1699 unsigned warn_if_not_align : 6; 1700 unsigned typeless_storage : 1; 1701 unsigned empty_flag : 1; 1702 unsigned indivisible_p : 1; 1703 unsigned spare : 16; 1704 1705 alias_set_type alias_set; 1706 tree pointer_to; 1707 tree reference_to; 1708 union tree_type_symtab { 1709 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address; 1710 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die; 1711 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab; 1712 tree canonical; 1713 tree next_variant; 1714 tree main_variant; 1715 tree context; 1716 tree name; 1717 }; 1718 1719 struct GTY(()) tree_type_with_lang_specific { 1720 struct tree_type_common common; 1721 /* Points to a structure whose details depend on the language in use. */ 1722 struct lang_type *lang_specific; 1723 }; 1724 1725 struct GTY(()) tree_type_non_common { 1726 struct tree_type_with_lang_specific with_lang_specific; 1727 tree values; 1728 tree minval; 1729 tree maxval; 1730 tree lang_1; 1731 }; 1732 1733 struct GTY (()) tree_binfo { 1734 struct tree_common common; 1735 1736 tree offset; 1737 tree vtable; 1738 tree virtuals; 1739 tree vptr_field; 1740 vec<tree, va_gc> *base_accesses; 1741 tree inheritance; 1742 1743 tree vtt_subvtt; 1744 tree vtt_vptr; 1745 1746 vec<tree, va_gc> base_binfos; 1747 }; 1748 1749 struct GTY(()) tree_decl_minimal { 1750 struct tree_common common; 1751 location_t locus; 1752 unsigned int uid; 1753 tree name; 1754 tree context; 1755 }; 1756 1757 struct GTY(()) tree_decl_common { 1758 struct tree_decl_minimal common; 1759 tree size; 1760 1761 ENUM_BITFIELD(machine_mode) mode : 8; 1762 1763 unsigned nonlocal_flag : 1; 1764 unsigned virtual_flag : 1; 1765 unsigned ignored_flag : 1; 1766 unsigned abstract_flag : 1; 1767 unsigned artificial_flag : 1; 1768 unsigned preserve_flag: 1; 1769 unsigned debug_expr_is_from : 1; 1770 1771 unsigned lang_flag_0 : 1; 1772 unsigned lang_flag_1 : 1; 1773 unsigned lang_flag_2 : 1; 1774 unsigned lang_flag_3 : 1; 1775 unsigned lang_flag_4 : 1; 1776 unsigned lang_flag_5 : 1; 1777 unsigned lang_flag_6 : 1; 1778 unsigned lang_flag_7 : 1; 1779 unsigned lang_flag_8 : 1; 1780 1781 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER 1782 In TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. 1783 In FIELD_DECL, this is DECL_FIELD_ABI_IGNORED. */ 1784 unsigned decl_flag_0 : 1; 1785 /* In FIELD_DECL, this is DECL_BIT_FIELD 1786 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL. 1787 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */ 1788 unsigned decl_flag_1 : 1; 1789 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P 1790 In VAR_DECL, PARM_DECL and RESULT_DECL, this is 1791 DECL_HAS_VALUE_EXPR_P. */ 1792 unsigned decl_flag_2 : 1; 1793 /* In FIELD_DECL, this is DECL_PADDING_P. */ 1794 unsigned decl_flag_3 : 1; 1795 /* Logically, these two would go in a theoretical base shared by var and 1796 parm decl. */ 1797 unsigned not_gimple_reg_flag : 1; 1798 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */ 1799 unsigned decl_by_reference_flag : 1; 1800 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */ 1801 unsigned decl_read_flag : 1; 1802 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */ 1803 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */ 1804 unsigned decl_nonshareable_flag : 1; 1805 1806 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */ 1807 unsigned int off_align : 6; 1808 1809 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */ 1810 unsigned int align : 6; 1811 1812 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as 1813 TYPE_WARN_IF_NOT_ALIGN. */ 1814 unsigned int warn_if_not_align : 6; 1815 1816 /* 14 bits unused. */ 1817 1818 /* UID for points-to sets, stable over copying from inlining. */ 1819 unsigned int pt_uid; 1820 1821 tree size_unit; 1822 tree initial; 1823 tree attributes; 1824 tree abstract_origin; 1825 1826 /* Points to a structure whose details depend on the language in use. */ 1827 struct lang_decl *lang_specific; 1828 }; 1829 1830 struct GTY(()) tree_decl_with_rtl { 1831 struct tree_decl_common common; 1832 rtx rtl; 1833 }; 1834 1835 struct GTY(()) tree_field_decl { 1836 struct tree_decl_common common; 1837 1838 tree offset; 1839 tree bit_field_type; 1840 tree qualifier; 1841 tree bit_offset; 1842 tree fcontext; 1843 }; 1844 1845 struct GTY(()) tree_label_decl { 1846 struct tree_decl_with_rtl common; 1847 int label_decl_uid; 1848 int eh_landing_pad_nr; 1849 }; 1850 1851 struct GTY(()) tree_result_decl { 1852 struct tree_decl_with_rtl common; 1853 }; 1854 1855 struct GTY(()) tree_const_decl { 1856 struct tree_decl_common common; 1857 }; 1858 1859 struct GTY(()) tree_parm_decl { 1860 struct tree_decl_with_rtl common; 1861 rtx incoming_rtl; 1862 }; 1863 1864 struct GTY(()) tree_decl_with_vis { 1865 struct tree_decl_with_rtl common; 1866 tree assembler_name; 1867 struct symtab_node *symtab_node; 1868 1869 /* Belong to VAR_DECL exclusively. */ 1870 unsigned defer_output : 1; 1871 unsigned hard_register : 1; 1872 unsigned common_flag : 1; 1873 unsigned in_text_section : 1; 1874 unsigned in_constant_pool : 1; 1875 unsigned dllimport_flag : 1; 1876 /* Don't belong to VAR_DECL exclusively. */ 1877 unsigned weak_flag : 1; 1878 1879 unsigned seen_in_bind_expr : 1; 1880 unsigned comdat_flag : 1; 1881 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */ 1882 ENUM_BITFIELD(symbol_visibility) visibility : 2; 1883 unsigned visibility_specified : 1; 1884 1885 /* Belong to FUNCTION_DECL exclusively. */ 1886 unsigned init_priority_p : 1; 1887 /* Used by C++ only. Might become a generic decl flag. */ 1888 unsigned shadowed_for_var_p : 1; 1889 /* Belong to FUNCTION_DECL exclusively. */ 1890 unsigned cxx_constructor : 1; 1891 /* Belong to FUNCTION_DECL exclusively. */ 1892 unsigned cxx_destructor : 1; 1893 /* Belong to FUNCTION_DECL exclusively. */ 1894 unsigned final : 1; 1895 /* Belong to FUNCTION_DECL exclusively. */ 1896 unsigned regdecl_flag : 1; 1897 /* 14 unused bits. */ 1898 /* 32 more unused on 64 bit HW. */ 1899 }; 1900 1901 struct GTY(()) tree_var_decl { 1902 struct tree_decl_with_vis common; 1903 }; 1904 1905 struct GTY(()) tree_decl_non_common { 1906 struct tree_decl_with_vis common; 1907 /* Almost all FE's use this. */ 1908 tree result; 1909 }; 1910 1911 /* Classify a special function declaration type. */ 1912 1913 enum function_decl_type 1914 { 1915 NONE, 1916 OPERATOR_NEW, 1917 OPERATOR_DELETE, 1918 LAMBDA_FUNCTION 1919 1920 /* 0 values left */ 1921 }; 1922 1923 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the 1924 arguments/result/saved_tree fields by front ends. It was either inherit 1925 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL, 1926 which seemed a bit strange. */ 1927 1928 struct GTY(()) tree_function_decl { 1929 struct tree_decl_non_common common; 1930 1931 struct function *f; 1932 1933 /* Arguments of the function. */ 1934 tree arguments; 1935 /* The personality function. Used for stack unwinding. */ 1936 tree personality; 1937 1938 /* Function specific options that are used by this function. */ 1939 tree function_specific_target; /* target options */ 1940 tree function_specific_optimization; /* optimization options */ 1941 1942 /* Generic function body. */ 1943 tree saved_tree; 1944 /* Index within a virtual table. */ 1945 tree vindex; 1946 1947 /* In a FUNCTION_DECL this is DECL_UNCHECKED_FUNCTION_CODE. */ 1948 unsigned int function_code; 1949 1950 ENUM_BITFIELD(built_in_class) built_in_class : 2; 1951 unsigned static_ctor_flag : 1; 1952 unsigned static_dtor_flag : 1; 1953 unsigned uninlinable : 1; 1954 unsigned possibly_inlined : 1; 1955 unsigned novops_flag : 1; 1956 unsigned returns_twice_flag : 1; 1957 1958 unsigned malloc_flag : 1; 1959 unsigned declared_inline_flag : 1; 1960 unsigned no_inline_warning_flag : 1; 1961 unsigned no_instrument_function_entry_exit : 1; 1962 unsigned no_limit_stack : 1; 1963 unsigned disregard_inline_limits : 1; 1964 unsigned pure_flag : 1; 1965 unsigned looping_const_or_pure_flag : 1; 1966 1967 /* Align the bitfield to boundary of a byte. */ 1968 ENUM_BITFIELD(function_decl_type) decl_type: 2; 1969 unsigned has_debug_args_flag : 1; 1970 unsigned versioned_function : 1; 1971 unsigned replaceable_operator : 1; 1972 1973 /* 11 bits left for future expansion. */ 1974 /* 32 bits on 64-bit HW. */ 1975 }; 1976 1977 struct GTY(()) tree_translation_unit_decl { 1978 struct tree_decl_common common; 1979 /* Source language of this translation unit. Used for DWARF output. */ 1980 const char *language; 1981 /* TODO: Non-optimization used to build this translation unit. */ 1982 /* TODO: Root of a partial DWARF tree for global types and decls. */ 1983 }; 1984 1985 struct GTY(()) tree_type_decl { 1986 struct tree_decl_non_common common; 1987 1988 }; 1989 1990 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node 1991 { 1992 struct tree_statement_list_node *prev; 1993 struct tree_statement_list_node *next; 1994 tree stmt; 1995 }; 1996 1997 struct GTY(()) tree_statement_list 1998 { 1999 struct tree_typed typed; 2000 struct tree_statement_list_node *head; 2001 struct tree_statement_list_node *tail; 2002 }; 2003 2004 2005 /* Optimization options used by a function. */ 2006 2007 struct GTY(()) tree_optimization_option { 2008 struct tree_base base; 2009 2010 /* The optimization options used by the user. */ 2011 struct cl_optimization *opts; 2012 2013 /* Target optabs for this set of optimization options. This is of 2014 type `struct target_optabs *'. */ 2015 void *GTY ((atomic)) optabs; 2016 2017 /* The value of this_target_optabs against which the optabs above were 2018 generated. */ 2019 struct target_optabs *GTY ((skip)) base_optabs; 2020 }; 2021 2022 /* Forward declaration, defined in target-globals.h. */ 2023 2024 class GTY(()) target_globals; 2025 2026 /* Target options used by a function. */ 2027 2028 struct GTY(()) tree_target_option { 2029 struct tree_base base; 2030 2031 /* Target globals for the corresponding target option. */ 2032 class target_globals *globals; 2033 2034 /* The optimization options used by the user. */ 2035 struct cl_target_option *opts; 2036 }; 2037 2038 /* Define the overall contents of a tree node. 2039 It may be any of the structures declared above 2040 for various types of node. */ 2041 union GTY ((ptr_alias (union lang_tree_node), 2042 desc ("tree_node_structure (&%h)"), variable_size)) tree_node { 2043 struct tree_base GTY ((tag ("TS_BASE"))) base; 2044 struct tree_typed GTY ((tag ("TS_TYPED"))) typed; 2045 struct tree_common GTY ((tag ("TS_COMMON"))) common; 2046 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst; 2047 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst; 2048 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst; 2049 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst; 2050 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector; 2051 struct tree_string GTY ((tag ("TS_STRING"))) string; 2052 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex; 2053 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier; 2054 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal; 2055 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common; 2056 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl; 2057 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) 2058 decl_non_common; 2059 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl; 2060 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis; 2061 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl; 2062 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl; 2063 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl; 2064 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl; 2065 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl; 2066 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl; 2067 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl; 2068 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL"))) 2069 translation_unit_decl; 2070 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common; 2071 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC"))) 2072 type_with_lang_specific; 2073 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON"))) 2074 type_non_common; 2075 struct tree_list GTY ((tag ("TS_LIST"))) list; 2076 struct tree_vec GTY ((tag ("TS_VEC"))) vec; 2077 struct tree_exp GTY ((tag ("TS_EXP"))) exp; 2078 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name; 2079 struct tree_block GTY ((tag ("TS_BLOCK"))) block; 2080 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo; 2081 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list; 2082 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor; 2083 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause; 2084 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization; 2085 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option; 2086 }; 2087 2088 /* Structure describing an attribute and a function to handle it. */ 2089 struct attribute_spec { 2090 /* The name of the attribute (without any leading or trailing __), 2091 or NULL to mark the end of a table of attributes. */ 2092 const char *name; 2093 /* The minimum length of the list of arguments of the attribute. */ 2094 int min_length; 2095 /* The maximum length of the list of arguments of the attribute 2096 (-1 for no maximum). It can also be -2 for fake attributes 2097 created for the sake of -Wno-attributes; in that case, we 2098 should skip the balanced token sequence when parsing the attribute. */ 2099 int max_length; 2100 /* Whether this attribute requires a DECL. If it does, it will be passed 2101 from types of DECLs, function return types and array element types to 2102 the DECLs, function types and array types respectively; but when 2103 applied to a type in any other circumstances, it will be ignored with 2104 a warning. (If greater control is desired for a given attribute, 2105 this should be false, and the flags argument to the handler may be 2106 used to gain greater control in that case.) */ 2107 bool decl_required; 2108 /* Whether this attribute requires a type. If it does, it will be passed 2109 from a DECL to the type of that DECL. */ 2110 bool type_required; 2111 /* Whether this attribute requires a function (or method) type. If it does, 2112 it will be passed from a function pointer type to the target type, 2113 and from a function return type (which is not itself a function 2114 pointer type) to the function type. */ 2115 bool function_type_required; 2116 /* Specifies if attribute affects type's identity. */ 2117 bool affects_type_identity; 2118 /* Function to handle this attribute. NODE points to the node to which 2119 the attribute is to be applied. If a DECL, it should be modified in 2120 place; if a TYPE, a copy should be created. NAME is the canonicalized 2121 name of the attribute i.e. without any leading or trailing underscores. 2122 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives 2123 further information about the context of the attribute. Afterwards, the 2124 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as 2125 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on 2126 error, as well as in any other cases when the attributes should not be 2127 added to the DECL or TYPE). Depending on FLAGS, any attributes to be 2128 applied to another type or DECL later may be returned; 2129 otherwise the return value should be NULL_TREE. This pointer may be 2130 NULL if no special handling is required beyond the checks implied 2131 by the rest of this structure. */ 2132 tree (*handler) (tree *node, tree name, tree args, 2133 int flags, bool *no_add_attrs); 2134 2135 /* Specifies the name of an attribute that's mutually exclusive with 2136 this one, and whether the relationship applies to the function, 2137 variable, or type form of the attribute. */ 2138 struct exclusions { 2139 const char *name; 2140 bool function; 2141 bool variable; 2142 bool type; 2143 }; 2144 2145 /* An array of attribute exclusions describing names of other attributes 2146 that this attribute is mutually exclusive with. */ 2147 const exclusions *exclude; 2148 }; 2149 2150 /* These functions allow a front-end to perform a manual layout of a 2151 RECORD_TYPE. (For instance, if the placement of subsequent fields 2152 depends on the placement of fields so far.) Begin by calling 2153 start_record_layout. Then, call place_field for each of the 2154 fields. Then, call finish_record_layout. See layout_type for the 2155 default way in which these functions are used. */ 2156 typedef struct record_layout_info_s { 2157 /* The RECORD_TYPE that we are laying out. */ 2158 tree t; 2159 /* The offset into the record so far, in bytes, not including bits in 2160 BITPOS. */ 2161 tree offset; 2162 /* The last known alignment of SIZE. */ 2163 unsigned int offset_align; 2164 /* The bit position within the last OFFSET_ALIGN bits, in bits. */ 2165 tree bitpos; 2166 /* The alignment of the record so far, in bits. */ 2167 unsigned int record_align; 2168 /* The alignment of the record so far, ignoring #pragma pack and 2169 __attribute__ ((packed)), in bits. */ 2170 unsigned int unpacked_align; 2171 /* The previous field laid out. */ 2172 tree prev_field; 2173 /* The static variables (i.e., class variables, as opposed to 2174 instance variables) encountered in T. */ 2175 vec<tree, va_gc> *pending_statics; 2176 /* Bits remaining in the current alignment group */ 2177 int remaining_in_alignment; 2178 /* True if we've seen a packed field that didn't have normal 2179 alignment anyway. */ 2180 int packed_maybe_necessary; 2181 } *record_layout_info; 2182 2183 /* Iterator for going through the function arguments. */ 2184 struct function_args_iterator { 2185 tree next; /* TREE_LIST pointing to the next argument */ 2186 }; 2187 2188 /* Structures to map from a tree to another tree. */ 2189 struct GTY(()) tree_map_base { 2190 tree from; 2191 }; 2192 2193 /* Map from a tree to another tree. */ 2194 2195 struct GTY((for_user)) tree_map { 2196 struct tree_map_base base; 2197 unsigned int hash; 2198 tree to; 2199 }; 2200 2201 /* Map from a decl tree to another tree. */ 2202 struct GTY((for_user)) tree_decl_map { 2203 struct tree_map_base base; 2204 tree to; 2205 }; 2206 2207 /* Map from a tree to an int. */ 2208 struct GTY((for_user)) tree_int_map { 2209 struct tree_map_base base; 2210 unsigned int to; 2211 }; 2212 2213 /* Map from a decl tree to a tree vector. */ 2214 struct GTY((for_user)) tree_vec_map { 2215 struct tree_map_base base; 2216 vec<tree, va_gc> *to; 2217 }; 2218 2219 /* Abstract iterators for CALL_EXPRs. These static inline definitions 2220 have to go towards the end of tree.h so that union tree_node is fully 2221 defined by this point. */ 2222 2223 /* Structure containing iterator state. */ 2224 struct call_expr_arg_iterator { 2225 tree t; /* the call_expr */ 2226 int n; /* argument count */ 2227 int i; /* next argument index */ 2228 }; 2229 2230 struct const_call_expr_arg_iterator { 2231 const_tree t; /* the call_expr */ 2232 int n; /* argument count */ 2233 int i; /* next argument index */ 2234 }; 2235 2236 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin 2237 function, and flags. */ 2238 struct GTY(()) builtin_info_type { 2239 tree decl; 2240 /* Whether the user can use <xxx> instead of explicitly using calls 2241 to __builtin_<xxx>. */ 2242 unsigned implicit_p : 1; 2243 /* Whether the user has provided a declaration of <xxx>. */ 2244 unsigned declared_p : 1; 2245 }; 2246 2247 /* Information about a _FloatN or _FloatNx type that may be 2248 supported. */ 2249 struct floatn_type_info { 2250 /* The number N in the type name. */ 2251 int n; 2252 /* Whether it is an extended type _FloatNx (true) or an interchange 2253 type (false). */ 2254 bool extended; 2255 }; 2256 2257 2258 /*--------------------------------------------------------------------------- 2259 Global variables 2260 ---------------------------------------------------------------------------*/ 2261 /* Matrix describing the structures contained in a given tree code. */ 2262 extern bool tree_contains_struct[MAX_TREE_CODES][64]; 2263 2264 /* Class of tree given its code. */ 2265 extern const enum tree_code_class tree_code_type[]; 2266 2267 /* Each tree code class has an associated string representation. 2268 These must correspond to the tree_code_class entries. */ 2269 extern const char *const tree_code_class_strings[]; 2270 2271 /* Number of argument-words in each kind of tree-node. */ 2272 extern const unsigned char tree_code_length[]; 2273 2274 /* Vector of all alias pairs for global symbols. */ 2275 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs; 2276 2277 /* Names of all the built_in classes. */ 2278 extern const char *const built_in_class_names[BUILT_IN_LAST]; 2279 2280 /* Names of all the built_in functions. */ 2281 extern const char * built_in_names[(int) END_BUILTINS]; 2282 2283 /* Number of operands and names for each OMP_CLAUSE node. */ 2284 extern unsigned const char omp_clause_num_ops[]; 2285 extern const char * const omp_clause_code_name[]; 2286 extern const char *user_omp_clause_code_name (tree, bool); 2287 2288 /* A vector of all translation-units. */ 2289 extern GTY (()) vec<tree, va_gc> *all_translation_units; 2290 2291 /* Vector of standard trees used by the C compiler. */ 2292 extern GTY(()) tree global_trees[TI_MAX]; 2293 2294 /* The standard C integer types. Use integer_type_kind to index into 2295 this array. */ 2296 extern GTY(()) tree integer_types[itk_none]; 2297 2298 /* Types used to represent sizes. */ 2299 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last]; 2300 2301 /* Arrays for keeping track of tree node statistics. */ 2302 extern uint64_t tree_node_counts[]; 2303 extern uint64_t tree_node_sizes[]; 2304 2305 /* True if we are in gimple form and the actions of the folders need to 2306 be restricted. False if we are not in gimple form and folding is not 2307 restricted to creating gimple expressions. */ 2308 extern bool in_gimple_form; 2309 2310 /* Functional interface to the builtin functions. */ 2311 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS]; 2312 2313 /* If nonzero, an upper limit on alignment of structure fields, in bits, */ 2314 extern unsigned int maximum_field_alignment; 2315 2316 /* Points to the FUNCTION_DECL of the function whose body we are reading. */ 2317 extern GTY(()) tree current_function_decl; 2318 2319 /* Nonzero means a FUNC_BEGIN label was emitted. */ 2320 extern GTY(()) const char * current_function_func_begin_label; 2321 2322 /* Information about the _FloatN and _FloatNx types. */ 2323 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES]; 2324 2325 #endif // GCC_TREE_CORE_H 2326