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