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