1 /* Core data structures for the 'tree' type. 2 Copyright (C) 1989-2018 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 can not 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" 168 169 BEGIN_CHKP_BUILTINS, 170 171 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) 172 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 173 ENUM##_CHKP = ENUM + BEGIN_CHKP_BUILTINS + 1, 174 #include "builtins.def" 175 176 END_CHKP_BUILTINS = BEGIN_CHKP_BUILTINS * 2 + 1, 177 178 /* Complex division routines in libgcc. These are done via builtins 179 because emit_library_call_value can't handle complex values. */ 180 BUILT_IN_COMPLEX_MUL_MIN, 181 BUILT_IN_COMPLEX_MUL_MAX 182 = BUILT_IN_COMPLEX_MUL_MIN 183 + MAX_MODE_COMPLEX_FLOAT 184 - MIN_MODE_COMPLEX_FLOAT, 185 186 BUILT_IN_COMPLEX_DIV_MIN, 187 BUILT_IN_COMPLEX_DIV_MAX 188 = BUILT_IN_COMPLEX_DIV_MIN 189 + MAX_MODE_COMPLEX_FLOAT 190 - MIN_MODE_COMPLEX_FLOAT, 191 192 /* Upper bound on non-language-specific builtins. */ 193 END_BUILTINS 194 }; 195 196 /* Internal functions. */ 197 enum internal_fn { 198 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE, 199 #include "internal-fn.def" 200 IFN_LAST 201 }; 202 203 /* An enum that combines target-independent built-in functions with 204 internal functions, so that they can be treated in a similar way. 205 The numbers for built-in functions are the same as for the 206 built_in_function enum. The numbers for internal functions 207 start at END_BUITLINS. */ 208 enum combined_fn { 209 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 210 CFN_##ENUM = int (ENUM), 211 #include "builtins.def" 212 213 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) 214 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \ 215 CFN_##ENUM##_CHKP = int (ENUM##_CHKP), 216 #include "builtins.def" 217 218 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \ 219 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE), 220 #include "internal-fn.def" 221 222 CFN_LAST 223 }; 224 225 /* Tree code classes. Each tree_code has an associated code class 226 represented by a TREE_CODE_CLASS. */ 227 enum tree_code_class { 228 tcc_exceptional, /* An exceptional code (fits no category). */ 229 tcc_constant, /* A constant. */ 230 /* Order of tcc_type and tcc_declaration is important. */ 231 tcc_type, /* A type object code. */ 232 tcc_declaration, /* A declaration (also serving as variable refs). */ 233 tcc_reference, /* A reference to storage. */ 234 tcc_comparison, /* A comparison expression. */ 235 tcc_unary, /* A unary arithmetic expression. */ 236 tcc_binary, /* A binary arithmetic expression. */ 237 tcc_statement, /* A statement expression, which have side effects 238 but usually no interesting value. */ 239 tcc_vl_exp, /* A function call or other expression with a 240 variable-length operand vector. */ 241 tcc_expression /* Any other expression. */ 242 }; 243 244 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into 245 the tables omp_clause_num_ops and omp_clause_code_name. */ 246 enum omp_clause_code { 247 /* Clause zero is special-cased inside the parser 248 (c_parser_omp_variable_list). */ 249 OMP_CLAUSE_ERROR = 0, 250 251 /* OpenACC/OpenMP clause: private (variable_list). */ 252 OMP_CLAUSE_PRIVATE, 253 254 /* OpenMP clause: shared (variable_list). */ 255 OMP_CLAUSE_SHARED, 256 257 /* OpenACC/OpenMP clause: firstprivate (variable_list). */ 258 OMP_CLAUSE_FIRSTPRIVATE, 259 260 /* OpenMP clause: lastprivate (variable_list). */ 261 OMP_CLAUSE_LASTPRIVATE, 262 263 /* OpenACC/OpenMP clause: reduction (operator:variable_list). 264 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator. 265 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var. 266 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var 267 into the shared one. 268 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL 269 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}. 270 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy 271 VAR_DECL placeholder, used like the above for C/C++ array 272 reductions. */ 273 OMP_CLAUSE_REDUCTION, 274 275 /* OpenMP clause: copyin (variable_list). */ 276 OMP_CLAUSE_COPYIN, 277 278 /* OpenMP clause: copyprivate (variable_list). */ 279 OMP_CLAUSE_COPYPRIVATE, 280 281 /* OpenMP clause: linear (variable-list[:linear-step]). */ 282 OMP_CLAUSE_LINEAR, 283 284 /* OpenMP clause: aligned (variable-list[:alignment]). */ 285 OMP_CLAUSE_ALIGNED, 286 287 /* OpenMP clause: depend ({in,out,inout}:variable-list). */ 288 OMP_CLAUSE_DEPEND, 289 290 /* OpenMP clause: uniform (argument-list). */ 291 OMP_CLAUSE_UNIFORM, 292 293 /* OpenMP clause: to (extended-list). 294 Only when it appears in declare target. */ 295 OMP_CLAUSE_TO_DECLARE, 296 297 /* OpenMP clause: link (variable-list). */ 298 OMP_CLAUSE_LINK, 299 300 /* OpenMP clause: from (variable-list). */ 301 OMP_CLAUSE_FROM, 302 303 /* OpenMP clause: to (variable-list). */ 304 OMP_CLAUSE_TO, 305 306 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr, 307 device, host (self), present, present_or_copy (pcopy), present_or_copyin 308 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)} 309 (variable-list). 310 311 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */ 312 OMP_CLAUSE_MAP, 313 314 /* OpenACC clause: use_device (variable_list). 315 OpenMP clause: use_device_ptr (variable-list). */ 316 OMP_CLAUSE_USE_DEVICE_PTR, 317 318 /* OpenMP clause: is_device_ptr (variable-list). */ 319 OMP_CLAUSE_IS_DEVICE_PTR, 320 321 /* Internal structure to hold OpenACC cache directive's variable-list. 322 #pragma acc cache (variable-list). */ 323 OMP_CLAUSE__CACHE_, 324 325 /* OpenACC clause: gang [(gang-argument-list)]. 326 Where 327 gang-argument-list: [gang-argument-list, ] gang-argument 328 gang-argument: [num:] integer-expression 329 | static: size-expression 330 size-expression: * | integer-expression. */ 331 OMP_CLAUSE_GANG, 332 333 /* OpenACC clause: async [(integer-expression)]. */ 334 OMP_CLAUSE_ASYNC, 335 336 /* OpenACC clause: wait [(integer-expression-list)]. */ 337 OMP_CLAUSE_WAIT, 338 339 /* OpenACC clause: auto. */ 340 OMP_CLAUSE_AUTO, 341 342 /* OpenACC clause: seq. */ 343 OMP_CLAUSE_SEQ, 344 345 /* Internal clause: temporary for combined loops expansion. */ 346 OMP_CLAUSE__LOOPTEMP_, 347 348 /* OpenACC/OpenMP clause: if (scalar-expression). */ 349 OMP_CLAUSE_IF, 350 351 /* OpenMP clause: num_threads (integer-expression). */ 352 OMP_CLAUSE_NUM_THREADS, 353 354 /* OpenMP clause: schedule. */ 355 OMP_CLAUSE_SCHEDULE, 356 357 /* OpenMP clause: nowait. */ 358 OMP_CLAUSE_NOWAIT, 359 360 /* OpenMP clause: ordered [(constant-integer-expression)]. */ 361 OMP_CLAUSE_ORDERED, 362 363 /* OpenACC/OpenMP clause: default. */ 364 OMP_CLAUSE_DEFAULT, 365 366 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */ 367 OMP_CLAUSE_COLLAPSE, 368 369 /* OpenMP clause: untied. */ 370 OMP_CLAUSE_UNTIED, 371 372 /* OpenMP clause: final (scalar-expression). */ 373 OMP_CLAUSE_FINAL, 374 375 /* OpenMP clause: mergeable. */ 376 OMP_CLAUSE_MERGEABLE, 377 378 /* OpenMP clause: device (integer-expression). */ 379 OMP_CLAUSE_DEVICE, 380 381 /* OpenMP clause: dist_schedule (static[:chunk-size]). */ 382 OMP_CLAUSE_DIST_SCHEDULE, 383 384 /* OpenMP clause: inbranch. */ 385 OMP_CLAUSE_INBRANCH, 386 387 /* OpenMP clause: notinbranch. */ 388 OMP_CLAUSE_NOTINBRANCH, 389 390 /* OpenMP clause: num_teams(integer-expression). */ 391 OMP_CLAUSE_NUM_TEAMS, 392 393 /* OpenMP clause: thread_limit(integer-expression). */ 394 OMP_CLAUSE_THREAD_LIMIT, 395 396 /* OpenMP clause: proc_bind ({master,close,spread}). */ 397 OMP_CLAUSE_PROC_BIND, 398 399 /* OpenMP clause: safelen (constant-integer-expression). */ 400 OMP_CLAUSE_SAFELEN, 401 402 /* OpenMP clause: simdlen (constant-integer-expression). */ 403 OMP_CLAUSE_SIMDLEN, 404 405 /* OpenMP clause: for. */ 406 OMP_CLAUSE_FOR, 407 408 /* OpenMP clause: parallel. */ 409 OMP_CLAUSE_PARALLEL, 410 411 /* OpenMP clause: sections. */ 412 OMP_CLAUSE_SECTIONS, 413 414 /* OpenMP clause: taskgroup. */ 415 OMP_CLAUSE_TASKGROUP, 416 417 /* OpenMP clause: priority (integer-expression). */ 418 OMP_CLAUSE_PRIORITY, 419 420 /* OpenMP clause: grainsize (integer-expression). */ 421 OMP_CLAUSE_GRAINSIZE, 422 423 /* OpenMP clause: num_tasks (integer-expression). */ 424 OMP_CLAUSE_NUM_TASKS, 425 426 /* OpenMP clause: nogroup. */ 427 OMP_CLAUSE_NOGROUP, 428 429 /* OpenMP clause: threads. */ 430 OMP_CLAUSE_THREADS, 431 432 /* OpenMP clause: simd. */ 433 OMP_CLAUSE_SIMD, 434 435 /* OpenMP clause: hint (integer-expression). */ 436 OMP_CLAUSE_HINT, 437 438 /* OpenMP clause: defaultmap (tofrom: scalar). */ 439 OMP_CLAUSE_DEFAULTMAP, 440 441 /* Internally used only clause, holding SIMD uid. */ 442 OMP_CLAUSE__SIMDUID_, 443 444 /* Internally used only clause, flag whether this is SIMT simd 445 loop or not. */ 446 OMP_CLAUSE__SIMT_, 447 448 /* OpenACC clause: independent. */ 449 OMP_CLAUSE_INDEPENDENT, 450 451 /* OpenACC clause: worker [( [num:] integer-expression)]. */ 452 OMP_CLAUSE_WORKER, 453 454 /* OpenACC clause: vector [( [length:] integer-expression)]. */ 455 OMP_CLAUSE_VECTOR, 456 457 /* OpenACC clause: num_gangs (integer-expression). */ 458 OMP_CLAUSE_NUM_GANGS, 459 460 /* OpenACC clause: num_workers (integer-expression). */ 461 OMP_CLAUSE_NUM_WORKERS, 462 463 /* OpenACC clause: vector_length (integer-expression). */ 464 OMP_CLAUSE_VECTOR_LENGTH, 465 466 /* OpenACC clause: tile ( size-expr-list ). */ 467 OMP_CLAUSE_TILE, 468 469 /* OpenMP internal-only clause to specify grid dimensions of a gridified 470 kernel. */ 471 OMP_CLAUSE__GRIDDIM_ 472 }; 473 474 #undef DEFTREESTRUCT 475 #define DEFTREESTRUCT(ENUM, NAME) ENUM, 476 enum tree_node_structure_enum { 477 #include "treestruct.def" 478 LAST_TS_ENUM 479 }; 480 #undef DEFTREESTRUCT 481 482 enum omp_clause_schedule_kind { 483 OMP_CLAUSE_SCHEDULE_STATIC, 484 OMP_CLAUSE_SCHEDULE_DYNAMIC, 485 OMP_CLAUSE_SCHEDULE_GUIDED, 486 OMP_CLAUSE_SCHEDULE_AUTO, 487 OMP_CLAUSE_SCHEDULE_RUNTIME, 488 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1, 489 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3), 490 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4), 491 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1 492 }; 493 494 enum omp_clause_default_kind { 495 OMP_CLAUSE_DEFAULT_UNSPECIFIED, 496 OMP_CLAUSE_DEFAULT_SHARED, 497 OMP_CLAUSE_DEFAULT_NONE, 498 OMP_CLAUSE_DEFAULT_PRIVATE, 499 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE, 500 OMP_CLAUSE_DEFAULT_PRESENT, 501 OMP_CLAUSE_DEFAULT_LAST 502 }; 503 504 /* There is a TYPE_QUAL value for each type qualifier. They can be 505 combined by bitwise-or to form the complete set of qualifiers for a 506 type. */ 507 enum cv_qualifier { 508 TYPE_UNQUALIFIED = 0x0, 509 TYPE_QUAL_CONST = 0x1, 510 TYPE_QUAL_VOLATILE = 0x2, 511 TYPE_QUAL_RESTRICT = 0x4, 512 TYPE_QUAL_ATOMIC = 0x8 513 }; 514 515 /* Standard named or nameless data types of the C compiler. */ 516 enum tree_index { 517 TI_ERROR_MARK, 518 TI_INTQI_TYPE, 519 TI_INTHI_TYPE, 520 TI_INTSI_TYPE, 521 TI_INTDI_TYPE, 522 TI_INTTI_TYPE, 523 524 TI_UINTQI_TYPE, 525 TI_UINTHI_TYPE, 526 TI_UINTSI_TYPE, 527 TI_UINTDI_TYPE, 528 TI_UINTTI_TYPE, 529 530 TI_ATOMICQI_TYPE, 531 TI_ATOMICHI_TYPE, 532 TI_ATOMICSI_TYPE, 533 TI_ATOMICDI_TYPE, 534 TI_ATOMICTI_TYPE, 535 536 TI_UINT16_TYPE, 537 TI_UINT32_TYPE, 538 TI_UINT64_TYPE, 539 540 TI_VOID, 541 542 TI_INTEGER_ZERO, 543 TI_INTEGER_ONE, 544 TI_INTEGER_THREE, 545 TI_INTEGER_MINUS_ONE, 546 TI_NULL_POINTER, 547 548 TI_SIZE_ZERO, 549 TI_SIZE_ONE, 550 551 TI_BITSIZE_ZERO, 552 TI_BITSIZE_ONE, 553 TI_BITSIZE_UNIT, 554 555 TI_PUBLIC, 556 TI_PROTECTED, 557 TI_PRIVATE, 558 559 TI_BOOLEAN_FALSE, 560 TI_BOOLEAN_TRUE, 561 562 TI_FLOAT_TYPE, 563 TI_DOUBLE_TYPE, 564 TI_LONG_DOUBLE_TYPE, 565 566 /* The _FloatN and _FloatNx types must be consecutive, and in the 567 same sequence as the corresponding complex types, which must also 568 be consecutive; _FloatN must come before _FloatNx; the order must 569 also be the same as in the floatn_nx_types array and the RID_* 570 values in c-common.h. This is so that iterations over these 571 types work as intended. */ 572 TI_FLOAT16_TYPE, 573 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE, 574 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE, 575 TI_FLOAT32_TYPE, 576 TI_FLOAT64_TYPE, 577 TI_FLOAT128_TYPE, 578 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE, 579 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1) 580 TI_FLOAT32X_TYPE, 581 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE, 582 TI_FLOAT64X_TYPE, 583 TI_FLOAT128X_TYPE, 584 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE, 585 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE, 586 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1) 587 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \ 588 - TI_FLOATN_NX_TYPE_FIRST \ 589 + 1) 590 591 /* Put the complex types after their component types, so that in (sequential) 592 tree streaming we can assert that their component types have already been 593 handled (see tree-streamer.c:record_common_node). */ 594 TI_COMPLEX_INTEGER_TYPE, 595 TI_COMPLEX_FLOAT_TYPE, 596 TI_COMPLEX_DOUBLE_TYPE, 597 TI_COMPLEX_LONG_DOUBLE_TYPE, 598 599 TI_COMPLEX_FLOAT16_TYPE, 600 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE, 601 TI_COMPLEX_FLOAT32_TYPE, 602 TI_COMPLEX_FLOAT64_TYPE, 603 TI_COMPLEX_FLOAT128_TYPE, 604 TI_COMPLEX_FLOAT32X_TYPE, 605 TI_COMPLEX_FLOAT64X_TYPE, 606 TI_COMPLEX_FLOAT128X_TYPE, 607 608 TI_FLOAT_PTR_TYPE, 609 TI_DOUBLE_PTR_TYPE, 610 TI_LONG_DOUBLE_PTR_TYPE, 611 TI_INTEGER_PTR_TYPE, 612 613 TI_VOID_TYPE, 614 TI_PTR_TYPE, 615 TI_CONST_PTR_TYPE, 616 TI_SIZE_TYPE, 617 TI_PID_TYPE, 618 TI_PTRDIFF_TYPE, 619 TI_VA_LIST_TYPE, 620 TI_VA_LIST_GPR_COUNTER_FIELD, 621 TI_VA_LIST_FPR_COUNTER_FIELD, 622 TI_BOOLEAN_TYPE, 623 TI_FILEPTR_TYPE, 624 TI_CONST_TM_PTR_TYPE, 625 TI_FENV_T_PTR_TYPE, 626 TI_CONST_FENV_T_PTR_TYPE, 627 TI_FEXCEPT_T_PTR_TYPE, 628 TI_CONST_FEXCEPT_T_PTR_TYPE, 629 TI_POINTER_SIZED_TYPE, 630 631 TI_POINTER_BOUNDS_TYPE, 632 633 TI_DFLOAT32_TYPE, 634 TI_DFLOAT64_TYPE, 635 TI_DFLOAT128_TYPE, 636 TI_DFLOAT32_PTR_TYPE, 637 TI_DFLOAT64_PTR_TYPE, 638 TI_DFLOAT128_PTR_TYPE, 639 640 TI_VOID_LIST_NODE, 641 642 TI_MAIN_IDENTIFIER, 643 644 TI_SAT_SFRACT_TYPE, 645 TI_SAT_FRACT_TYPE, 646 TI_SAT_LFRACT_TYPE, 647 TI_SAT_LLFRACT_TYPE, 648 TI_SAT_USFRACT_TYPE, 649 TI_SAT_UFRACT_TYPE, 650 TI_SAT_ULFRACT_TYPE, 651 TI_SAT_ULLFRACT_TYPE, 652 TI_SFRACT_TYPE, 653 TI_FRACT_TYPE, 654 TI_LFRACT_TYPE, 655 TI_LLFRACT_TYPE, 656 TI_USFRACT_TYPE, 657 TI_UFRACT_TYPE, 658 TI_ULFRACT_TYPE, 659 TI_ULLFRACT_TYPE, 660 TI_SAT_SACCUM_TYPE, 661 TI_SAT_ACCUM_TYPE, 662 TI_SAT_LACCUM_TYPE, 663 TI_SAT_LLACCUM_TYPE, 664 TI_SAT_USACCUM_TYPE, 665 TI_SAT_UACCUM_TYPE, 666 TI_SAT_ULACCUM_TYPE, 667 TI_SAT_ULLACCUM_TYPE, 668 TI_SACCUM_TYPE, 669 TI_ACCUM_TYPE, 670 TI_LACCUM_TYPE, 671 TI_LLACCUM_TYPE, 672 TI_USACCUM_TYPE, 673 TI_UACCUM_TYPE, 674 TI_ULACCUM_TYPE, 675 TI_ULLACCUM_TYPE, 676 TI_QQ_TYPE, 677 TI_HQ_TYPE, 678 TI_SQ_TYPE, 679 TI_DQ_TYPE, 680 TI_TQ_TYPE, 681 TI_UQQ_TYPE, 682 TI_UHQ_TYPE, 683 TI_USQ_TYPE, 684 TI_UDQ_TYPE, 685 TI_UTQ_TYPE, 686 TI_SAT_QQ_TYPE, 687 TI_SAT_HQ_TYPE, 688 TI_SAT_SQ_TYPE, 689 TI_SAT_DQ_TYPE, 690 TI_SAT_TQ_TYPE, 691 TI_SAT_UQQ_TYPE, 692 TI_SAT_UHQ_TYPE, 693 TI_SAT_USQ_TYPE, 694 TI_SAT_UDQ_TYPE, 695 TI_SAT_UTQ_TYPE, 696 TI_HA_TYPE, 697 TI_SA_TYPE, 698 TI_DA_TYPE, 699 TI_TA_TYPE, 700 TI_UHA_TYPE, 701 TI_USA_TYPE, 702 TI_UDA_TYPE, 703 TI_UTA_TYPE, 704 TI_SAT_HA_TYPE, 705 TI_SAT_SA_TYPE, 706 TI_SAT_DA_TYPE, 707 TI_SAT_TA_TYPE, 708 TI_SAT_UHA_TYPE, 709 TI_SAT_USA_TYPE, 710 TI_SAT_UDA_TYPE, 711 TI_SAT_UTA_TYPE, 712 713 TI_OPTIMIZATION_DEFAULT, 714 TI_OPTIMIZATION_CURRENT, 715 TI_TARGET_OPTION_DEFAULT, 716 TI_TARGET_OPTION_CURRENT, 717 TI_CURRENT_TARGET_PRAGMA, 718 TI_CURRENT_OPTIMIZE_PRAGMA, 719 720 TI_MAX 721 }; 722 723 /* An enumeration of the standard C integer types. These must be 724 ordered so that shorter types appear before longer ones, and so 725 that signed types appear before unsigned ones, for the correct 726 functioning of interpret_integer() in c-lex.c. */ 727 enum integer_type_kind { 728 itk_char, 729 itk_signed_char, 730 itk_unsigned_char, 731 itk_short, 732 itk_unsigned_short, 733 itk_int, 734 itk_unsigned_int, 735 itk_long, 736 itk_unsigned_long, 737 itk_long_long, 738 itk_unsigned_long_long, 739 740 itk_intN_0, 741 itk_unsigned_intN_0, 742 itk_intN_1, 743 itk_unsigned_intN_1, 744 itk_intN_2, 745 itk_unsigned_intN_2, 746 itk_intN_3, 747 itk_unsigned_intN_3, 748 749 itk_none 750 }; 751 752 /* A pointer-to-function member type looks like: 753 754 struct { 755 __P __pfn; 756 ptrdiff_t __delta; 757 }; 758 759 If __pfn is NULL, it is a NULL pointer-to-member-function. 760 761 (Because the vtable is always the first thing in the object, we 762 don't need its offset.) If the function is virtual, then PFN is 763 one plus twice the index into the vtable; otherwise, it is just a 764 pointer to the function. 765 766 Unfortunately, using the lowest bit of PFN doesn't work in 767 architectures that don't impose alignment requirements on function 768 addresses, or that use the lowest bit to tell one ISA from another, 769 for example. For such architectures, we use the lowest bit of 770 DELTA instead of the lowest bit of the PFN, and DELTA will be 771 multiplied by 2. */ 772 enum ptrmemfunc_vbit_where_t { 773 ptrmemfunc_vbit_in_pfn, 774 ptrmemfunc_vbit_in_delta 775 }; 776 777 /* Flags that may be passed in the third argument of decl_attributes, and 778 to handler functions for attributes. */ 779 enum attribute_flags { 780 /* The type passed in is the type of a DECL, and any attributes that 781 should be passed in again to be applied to the DECL rather than the 782 type should be returned. */ 783 ATTR_FLAG_DECL_NEXT = 1, 784 /* The type passed in is a function return type, and any attributes that 785 should be passed in again to be applied to the function type rather 786 than the return type should be returned. */ 787 ATTR_FLAG_FUNCTION_NEXT = 2, 788 /* The type passed in is an array element type, and any attributes that 789 should be passed in again to be applied to the array type rather 790 than the element type should be returned. */ 791 ATTR_FLAG_ARRAY_NEXT = 4, 792 /* The type passed in is a structure, union or enumeration type being 793 created, and should be modified in place. */ 794 ATTR_FLAG_TYPE_IN_PLACE = 8, 795 /* The attributes are being applied by default to a library function whose 796 name indicates known behavior, and should be silently ignored if they 797 are not in fact compatible with the function type. */ 798 ATTR_FLAG_BUILT_IN = 16, 799 /* A given attribute has been parsed as a C++-11 attribute. */ 800 ATTR_FLAG_CXX11 = 32 801 }; 802 803 /* Types used to represent sizes. */ 804 enum size_type_kind { 805 stk_sizetype, /* Normal representation of sizes in bytes. */ 806 stk_ssizetype, /* Signed representation of sizes in bytes. */ 807 stk_bitsizetype, /* Normal representation of sizes in bits. */ 808 stk_sbitsizetype, /* Signed representation of sizes in bits. */ 809 stk_type_kind_last 810 }; 811 812 enum operand_equal_flag { 813 OEP_ONLY_CONST = 1, 814 OEP_PURE_SAME = 2, 815 OEP_MATCH_SIDE_EFFECTS = 4, 816 OEP_ADDRESS_OF = 8, 817 /* Internal within operand_equal_p: */ 818 OEP_NO_HASH_CHECK = 16, 819 /* Internal within inchash::add_expr: */ 820 OEP_HASH_CHECK = 32, 821 /* Makes operand_equal_p handle more expressions: */ 822 OEP_LEXICOGRAPHIC = 64, 823 OEP_BITWISE = 128 824 }; 825 826 /* Enum and arrays used for tree allocation stats. 827 Keep in sync with tree.c:tree_node_kind_names. */ 828 enum tree_node_kind { 829 d_kind, 830 t_kind, 831 b_kind, 832 s_kind, 833 r_kind, 834 e_kind, 835 c_kind, 836 id_kind, 837 vec_kind, 838 binfo_kind, 839 ssa_name_kind, 840 constr_kind, 841 x_kind, 842 lang_decl, 843 lang_type, 844 omp_clause_kind, 845 all_kinds 846 }; 847 848 enum annot_expr_kind { 849 annot_expr_ivdep_kind, 850 annot_expr_unroll_kind, 851 annot_expr_no_vector_kind, 852 annot_expr_vector_kind, 853 annot_expr_parallel_kind, 854 annot_expr_kind_last 855 }; 856 857 /*--------------------------------------------------------------------------- 858 Type definitions 859 ---------------------------------------------------------------------------*/ 860 /* When processing aliases at the symbol table level, we need the 861 declaration of target. For this reason we need to queue aliases and 862 process them after all declarations has been produced. */ 863 struct GTY(()) alias_pair { 864 tree decl; 865 tree target; 866 }; 867 868 /* An initialization priority. */ 869 typedef unsigned short priority_type; 870 871 /* The type of a callback function for walking over tree structure. */ 872 typedef tree (*walk_tree_fn) (tree *, int *, void *); 873 874 /* The type of a callback function that represents a custom walk_tree. */ 875 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *), 876 void *, hash_set<tree> *); 877 878 879 /*--------------------------------------------------------------------------- 880 Main data structures 881 ---------------------------------------------------------------------------*/ 882 /* A tree node can represent a data type, a variable, an expression 883 or a statement. Each node has a TREE_CODE which says what kind of 884 thing it represents. Some common codes are: 885 INTEGER_TYPE -- represents a type of integers. 886 ARRAY_TYPE -- represents a type of pointer. 887 VAR_DECL -- represents a declared variable. 888 INTEGER_CST -- represents a constant integer value. 889 PLUS_EXPR -- represents a sum (an expression). 890 891 As for the contents of a tree node: there are some fields 892 that all nodes share. Each TREE_CODE has various special-purpose 893 fields as well. The fields of a node are never accessed directly, 894 always through accessor macros. */ 895 896 /* Every kind of tree node starts with this structure, 897 so all nodes have these fields. 898 899 See the accessor macros, defined below, for documentation of the 900 fields, and the table below which connects the fields and the 901 accessor macros. */ 902 903 struct GTY(()) tree_base { 904 ENUM_BITFIELD(tree_code) code : 16; 905 906 unsigned side_effects_flag : 1; 907 unsigned constant_flag : 1; 908 unsigned addressable_flag : 1; 909 unsigned volatile_flag : 1; 910 unsigned readonly_flag : 1; 911 unsigned asm_written_flag: 1; 912 unsigned nowarning_flag : 1; 913 unsigned visited : 1; 914 915 unsigned used_flag : 1; 916 unsigned nothrow_flag : 1; 917 unsigned static_flag : 1; 918 unsigned public_flag : 1; 919 unsigned private_flag : 1; 920 unsigned protected_flag : 1; 921 unsigned deprecated_flag : 1; 922 unsigned default_def_flag : 1; 923 924 union { 925 /* The bits in the following structure should only be used with 926 accessor macros that constrain inputs with tree checking. */ 927 struct { 928 unsigned lang_flag_0 : 1; 929 unsigned lang_flag_1 : 1; 930 unsigned lang_flag_2 : 1; 931 unsigned lang_flag_3 : 1; 932 unsigned lang_flag_4 : 1; 933 unsigned lang_flag_5 : 1; 934 unsigned lang_flag_6 : 1; 935 unsigned saturating_flag : 1; 936 937 unsigned unsigned_flag : 1; 938 unsigned packed_flag : 1; 939 unsigned user_align : 1; 940 unsigned nameless_flag : 1; 941 unsigned atomic_flag : 1; 942 unsigned spare0 : 3; 943 944 unsigned spare1 : 8; 945 946 /* This field is only used with TREE_TYPE nodes; the only reason it is 947 present in tree_base instead of tree_type is to save space. The size 948 of the field must be large enough to hold addr_space_t values. */ 949 unsigned address_space : 8; 950 } bits; 951 952 /* The following fields are present in tree_base to save space. The 953 nodes using them do not require any of the flags above and so can 954 make better use of the 4-byte sized word. */ 955 956 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */ 957 struct { 958 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 959 its native precision. */ 960 unsigned char unextended; 961 962 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to 963 wider precisions based on its TYPE_SIGN. */ 964 unsigned char extended; 965 966 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 967 offset_int precision, with smaller integers being extended 968 according to their TYPE_SIGN. This is equal to one of the two 969 fields above but is cached for speed. */ 970 unsigned char offset; 971 } int_length; 972 973 /* VEC length. This field is only used with TREE_VEC. */ 974 int length; 975 976 /* This field is only used with VECTOR_CST. */ 977 struct { 978 /* The value of VECTOR_CST_LOG2_NPATTERNS. */ 979 unsigned int log2_npatterns : 8; 980 981 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */ 982 unsigned int nelts_per_pattern : 8; 983 984 /* For future expansion. */ 985 unsigned int unused : 16; 986 } vector_cst; 987 988 /* SSA version number. This field is only used with SSA_NAME. */ 989 unsigned int version; 990 991 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */ 992 unsigned int chrec_var; 993 994 /* Internal function code. */ 995 enum internal_fn ifn; 996 997 /* The following two fields are used for MEM_REF and TARGET_MEM_REF 998 expression trees and specify known data non-dependences. For 999 two memory references in a function they are known to not 1000 alias if dependence_info.clique are equal and dependence_info.base 1001 are distinct. Clique number zero means there is no information, 1002 clique number one is populated from function global information 1003 and thus needs no remapping on transforms like loop unrolling. */ 1004 struct { 1005 unsigned short clique; 1006 unsigned short base; 1007 } dependence_info; 1008 } GTY((skip(""))) u; 1009 }; 1010 1011 /* The following table lists the uses of each of the above flags and 1012 for which types of nodes they are defined. 1013 1014 addressable_flag: 1015 1016 TREE_ADDRESSABLE in 1017 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL 1018 SSA_NAME 1019 all types 1020 CONSTRUCTOR, IDENTIFIER_NODE 1021 STMT_EXPR 1022 1023 CALL_EXPR_TAILCALL in 1024 CALL_EXPR 1025 1026 CASE_LOW_SEEN in 1027 CASE_LABEL_EXPR 1028 1029 PREDICT_EXPR_OUTCOME in 1030 PREDICT_EXPR 1031 1032 static_flag: 1033 1034 TREE_STATIC in 1035 VAR_DECL, FUNCTION_DECL 1036 CONSTRUCTOR 1037 1038 TREE_NO_TRAMPOLINE in 1039 ADDR_EXPR 1040 1041 BINFO_VIRTUAL_P in 1042 TREE_BINFO 1043 1044 TREE_SYMBOL_REFERENCED in 1045 IDENTIFIER_NODE 1046 1047 CLEANUP_EH_ONLY in 1048 TARGET_EXPR, WITH_CLEANUP_EXPR 1049 1050 TRY_CATCH_IS_CLEANUP in 1051 TRY_CATCH_EXPR 1052 1053 ASM_INPUT_P in 1054 ASM_EXPR 1055 1056 TYPE_REF_CAN_ALIAS_ALL in 1057 POINTER_TYPE, REFERENCE_TYPE 1058 1059 CASE_HIGH_SEEN in 1060 CASE_LABEL_EXPR 1061 1062 ENUM_IS_SCOPED in 1063 ENUMERAL_TYPE 1064 1065 TRANSACTION_EXPR_OUTER in 1066 TRANSACTION_EXPR 1067 1068 SSA_NAME_ANTI_RANGE_P in 1069 SSA_NAME 1070 1071 MUST_TAIL_CALL in 1072 CALL_EXPR 1073 1074 public_flag: 1075 1076 TREE_OVERFLOW in 1077 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST 1078 1079 TREE_PUBLIC in 1080 VAR_DECL, FUNCTION_DECL 1081 IDENTIFIER_NODE 1082 1083 CONSTRUCTOR_NO_CLEARING in 1084 CONSTRUCTOR 1085 1086 ASM_VOLATILE_P in 1087 ASM_EXPR 1088 1089 CALL_EXPR_VA_ARG_PACK in 1090 CALL_EXPR 1091 1092 TYPE_CACHED_VALUES_P in 1093 all types 1094 1095 SAVE_EXPR_RESOLVED_P in 1096 SAVE_EXPR 1097 1098 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in 1099 OMP_CLAUSE_LASTPRIVATE 1100 1101 OMP_CLAUSE_PRIVATE_DEBUG in 1102 OMP_CLAUSE_PRIVATE 1103 1104 OMP_CLAUSE_LINEAR_NO_COPYIN in 1105 OMP_CLAUSE_LINEAR 1106 1107 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in 1108 OMP_CLAUSE_MAP 1109 1110 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in 1111 OMP_CLAUSE_REDUCTION 1112 1113 TRANSACTION_EXPR_RELAXED in 1114 TRANSACTION_EXPR 1115 1116 FALLTHROUGH_LABEL_P in 1117 LABEL_DECL 1118 1119 SSA_NAME_IS_VIRTUAL_OPERAND in 1120 SSA_NAME 1121 1122 EXPR_LOCATION_WRAPPER_P in 1123 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR 1124 1125 private_flag: 1126 1127 TREE_PRIVATE in 1128 all decls 1129 1130 CALL_EXPR_RETURN_SLOT_OPT in 1131 CALL_EXPR 1132 1133 OMP_SECTION_LAST in 1134 OMP_SECTION 1135 1136 OMP_PARALLEL_COMBINED in 1137 OMP_PARALLEL 1138 1139 OMP_ATOMIC_SEQ_CST in 1140 OMP_ATOMIC* 1141 1142 OMP_CLAUSE_PRIVATE_OUTER_REF in 1143 OMP_CLAUSE_PRIVATE 1144 1145 OMP_CLAUSE_LINEAR_NO_COPYOUT in 1146 OMP_CLAUSE_LINEAR 1147 1148 TYPE_REF_IS_RVALUE in 1149 REFERENCE_TYPE 1150 1151 ENUM_IS_OPAQUE in 1152 ENUMERAL_TYPE 1153 1154 protected_flag: 1155 1156 TREE_PROTECTED in 1157 BLOCK 1158 all decls 1159 1160 CALL_FROM_THUNK_P and 1161 CALL_ALLOCA_FOR_VAR_P in 1162 CALL_EXPR 1163 1164 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in 1165 OMP_CLAUSE_LINEAR 1166 1167 ASM_INLINE_P in 1168 ASM_EXPR 1169 1170 side_effects_flag: 1171 1172 TREE_SIDE_EFFECTS in 1173 all expressions 1174 all decls 1175 all constants 1176 1177 FORCED_LABEL in 1178 LABEL_DECL 1179 1180 volatile_flag: 1181 1182 TREE_THIS_VOLATILE in 1183 all expressions 1184 all decls 1185 1186 TYPE_VOLATILE in 1187 all types 1188 1189 readonly_flag: 1190 1191 TREE_READONLY in 1192 all expressions 1193 all decls 1194 1195 TYPE_READONLY in 1196 all types 1197 1198 constant_flag: 1199 1200 TREE_CONSTANT in 1201 all expressions 1202 all decls 1203 all constants 1204 1205 TYPE_SIZES_GIMPLIFIED in 1206 all types 1207 1208 unsigned_flag: 1209 1210 TYPE_UNSIGNED in 1211 all types 1212 1213 DECL_UNSIGNED in 1214 all decls 1215 1216 asm_written_flag: 1217 1218 TREE_ASM_WRITTEN in 1219 VAR_DECL, FUNCTION_DECL, TYPE_DECL 1220 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE 1221 BLOCK, STRING_CST 1222 1223 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in 1224 SSA_NAME 1225 1226 used_flag: 1227 1228 TREE_USED in 1229 all expressions 1230 all decls 1231 IDENTIFIER_NODE 1232 1233 nothrow_flag: 1234 1235 TREE_NOTHROW in 1236 CALL_EXPR 1237 FUNCTION_DECL 1238 1239 TREE_THIS_NOTRAP in 1240 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF 1241 1242 SSA_NAME_IN_FREE_LIST in 1243 SSA_NAME 1244 1245 DECL_NONALIASED in 1246 VAR_DECL 1247 1248 deprecated_flag: 1249 1250 TREE_DEPRECATED in 1251 all decls 1252 all types 1253 1254 IDENTIFIER_TRANSPARENT_ALIAS in 1255 IDENTIFIER_NODE 1256 1257 visited: 1258 1259 TREE_VISITED in 1260 all trees (used liberally by many passes) 1261 1262 saturating_flag: 1263 1264 TYPE_REVERSE_STORAGE_ORDER in 1265 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE 1266 1267 TYPE_SATURATING in 1268 other types 1269 1270 VAR_DECL_IS_VIRTUAL_OPERAND in 1271 VAR_DECL 1272 1273 nowarning_flag: 1274 1275 TREE_NO_WARNING in 1276 all expressions 1277 all decls 1278 1279 TYPE_ARTIFICIAL in 1280 all types 1281 1282 default_def_flag: 1283 1284 TYPE_FINAL_P in 1285 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE 1286 1287 TYPE_VECTOR_OPAQUE in 1288 VECTOR_TYPE 1289 1290 SSA_NAME_IS_DEFAULT_DEF in 1291 SSA_NAME 1292 1293 DECL_NONLOCAL_FRAME in 1294 VAR_DECL 1295 1296 REF_REVERSE_STORAGE_ORDER in 1297 BIT_FIELD_REF, MEM_REF 1298 1299 FUNC_ADDR_BY_DESCRIPTOR in 1300 ADDR_EXPR 1301 1302 CALL_EXPR_BY_DESCRIPTOR in 1303 CALL_EXPR 1304 */ 1305 1306 struct GTY(()) tree_typed { 1307 struct tree_base base; 1308 tree type; 1309 }; 1310 1311 struct GTY(()) tree_common { 1312 struct tree_typed typed; 1313 tree chain; 1314 }; 1315 1316 struct GTY(()) tree_int_cst { 1317 struct tree_typed typed; 1318 HOST_WIDE_INT val[1]; 1319 }; 1320 1321 1322 struct GTY(()) tree_real_cst { 1323 struct tree_typed typed; 1324 struct real_value * real_cst_ptr; 1325 }; 1326 1327 struct GTY(()) tree_fixed_cst { 1328 struct tree_typed typed; 1329 struct fixed_value * fixed_cst_ptr; 1330 }; 1331 1332 struct GTY(()) tree_string { 1333 struct tree_typed typed; 1334 int length; 1335 char str[1]; 1336 }; 1337 1338 struct GTY(()) tree_complex { 1339 struct tree_typed typed; 1340 tree real; 1341 tree imag; 1342 }; 1343 1344 struct GTY(()) tree_vector { 1345 struct tree_typed typed; 1346 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1]; 1347 }; 1348 1349 struct GTY(()) tree_poly_int_cst { 1350 struct tree_typed typed; 1351 tree coeffs[NUM_POLY_INT_COEFFS]; 1352 }; 1353 1354 struct GTY(()) tree_identifier { 1355 struct tree_common common; 1356 struct ht_identifier id; 1357 }; 1358 1359 struct GTY(()) tree_list { 1360 struct tree_common common; 1361 tree purpose; 1362 tree value; 1363 }; 1364 1365 struct GTY(()) tree_vec { 1366 struct tree_common common; 1367 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1]; 1368 }; 1369 1370 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the 1371 element. INDEX can optionally design the position of VALUE: in arrays, 1372 it is the index where VALUE has to be placed; in structures, it is the 1373 FIELD_DECL of the member. */ 1374 struct GTY(()) constructor_elt { 1375 tree index; 1376 tree value; 1377 }; 1378 1379 struct GTY(()) tree_constructor { 1380 struct tree_typed typed; 1381 vec<constructor_elt, va_gc> *elts; 1382 }; 1383 1384 enum omp_clause_depend_kind 1385 { 1386 OMP_CLAUSE_DEPEND_IN, 1387 OMP_CLAUSE_DEPEND_OUT, 1388 OMP_CLAUSE_DEPEND_INOUT, 1389 OMP_CLAUSE_DEPEND_SOURCE, 1390 OMP_CLAUSE_DEPEND_SINK, 1391 OMP_CLAUSE_DEPEND_LAST 1392 }; 1393 1394 enum omp_clause_proc_bind_kind 1395 { 1396 /* Numbers should match omp_proc_bind_t enum in omp.h. */ 1397 OMP_CLAUSE_PROC_BIND_FALSE = 0, 1398 OMP_CLAUSE_PROC_BIND_TRUE = 1, 1399 OMP_CLAUSE_PROC_BIND_MASTER = 2, 1400 OMP_CLAUSE_PROC_BIND_CLOSE = 3, 1401 OMP_CLAUSE_PROC_BIND_SPREAD = 4, 1402 OMP_CLAUSE_PROC_BIND_LAST 1403 }; 1404 1405 enum omp_clause_linear_kind 1406 { 1407 OMP_CLAUSE_LINEAR_DEFAULT, 1408 OMP_CLAUSE_LINEAR_REF, 1409 OMP_CLAUSE_LINEAR_VAL, 1410 OMP_CLAUSE_LINEAR_UVAL 1411 }; 1412 1413 struct GTY(()) tree_exp { 1414 struct tree_typed typed; 1415 location_t locus; 1416 tree GTY ((special ("tree_exp"), 1417 desc ("TREE_CODE ((tree) &%0)"))) 1418 operands[1]; 1419 }; 1420 1421 /* Immediate use linking structure. This structure is used for maintaining 1422 a doubly linked list of uses of an SSA_NAME. */ 1423 struct GTY(()) ssa_use_operand_t { 1424 struct ssa_use_operand_t* GTY((skip(""))) prev; 1425 struct ssa_use_operand_t* GTY((skip(""))) next; 1426 /* Immediate uses for a given SSA name are maintained as a cyclic 1427 list. To recognize the root of this list, the location field 1428 needs to point to the original SSA name. Since statements and 1429 SSA names are of different data types, we need this union. See 1430 the explanation in struct imm_use_iterator. */ 1431 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc; 1432 tree *GTY((skip(""))) use; 1433 }; 1434 1435 struct GTY(()) tree_ssa_name { 1436 struct tree_typed typed; 1437 1438 /* _DECL wrapped by this SSA name. */ 1439 tree var; 1440 1441 /* Statement that defines this SSA name. */ 1442 gimple *def_stmt; 1443 1444 /* Value range information. */ 1445 union ssa_name_info_type { 1446 /* Pointer attributes used for alias analysis. */ 1447 struct GTY ((tag ("0"))) ptr_info_def *ptr_info; 1448 /* Value range attributes used for zero/sign extension elimination. */ 1449 struct GTY ((tag ("1"))) range_info_def *range_info; 1450 } GTY ((desc ("%1.typed.type ?" \ 1451 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info; 1452 1453 /* Immediate uses list for this SSA_NAME. */ 1454 struct ssa_use_operand_t imm_uses; 1455 }; 1456 1457 struct GTY(()) phi_arg_d { 1458 /* imm_use MUST be the first element in struct because we do some 1459 pointer arithmetic with it. See phi_arg_index_from_use. */ 1460 struct ssa_use_operand_t imm_use; 1461 tree def; 1462 location_t locus; 1463 }; 1464 1465 struct GTY(()) tree_omp_clause { 1466 struct tree_common common; 1467 location_t locus; 1468 enum omp_clause_code code; 1469 union omp_clause_subcode { 1470 enum omp_clause_default_kind default_kind; 1471 enum omp_clause_schedule_kind schedule_kind; 1472 enum omp_clause_depend_kind depend_kind; 1473 /* See include/gomp-constants.h for enum gomp_map_kind's values. */ 1474 unsigned int map_kind; 1475 enum omp_clause_proc_bind_kind proc_bind_kind; 1476 enum tree_code reduction_code; 1477 enum omp_clause_linear_kind linear_kind; 1478 enum tree_code if_modifier; 1479 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target 1480 construct describes. */ 1481 unsigned int dimension; 1482 } GTY ((skip)) subcode; 1483 1484 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's 1485 usage. */ 1486 gimple_seq gimple_reduction_init; 1487 gimple_seq gimple_reduction_merge; 1488 1489 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) 1490 ops[1]; 1491 }; 1492 1493 struct GTY(()) tree_block { 1494 struct tree_base base; 1495 tree chain; 1496 1497 unsigned abstract_flag : 1; 1498 unsigned block_num : 31; 1499 1500 location_t locus; 1501 location_t end_locus; 1502 1503 tree vars; 1504 vec<tree, va_gc> *nonlocalized_vars; 1505 1506 tree subblocks; 1507 tree supercontext; 1508 tree abstract_origin; 1509 tree fragment_origin; 1510 tree fragment_chain; 1511 1512 /* Pointer to the DWARF lexical block. */ 1513 struct die_struct *die; 1514 }; 1515 1516 struct GTY(()) tree_type_common { 1517 struct tree_common common; 1518 tree size; 1519 tree size_unit; 1520 tree attributes; 1521 unsigned int uid; 1522 1523 unsigned int precision : 10; 1524 unsigned no_force_blk_flag : 1; 1525 unsigned needs_constructing_flag : 1; 1526 unsigned transparent_aggr_flag : 1; 1527 unsigned restrict_flag : 1; 1528 unsigned contains_placeholder_bits : 2; 1529 1530 ENUM_BITFIELD(machine_mode) mode : 8; 1531 1532 unsigned string_flag : 1; 1533 unsigned lang_flag_0 : 1; 1534 unsigned lang_flag_1 : 1; 1535 unsigned lang_flag_2 : 1; 1536 unsigned lang_flag_3 : 1; 1537 unsigned lang_flag_4 : 1; 1538 unsigned lang_flag_5 : 1; 1539 unsigned lang_flag_6 : 1; 1540 unsigned lang_flag_7 : 1; 1541 1542 /* TYPE_ALIGN in log2; this has to be large enough to hold values 1543 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT, 1544 the latter being usually the larger. For ELF it is 8<<28, 1545 so we need to store the value 32 (not 31, as we need the zero 1546 as well), hence six bits. */ 1547 unsigned align : 6; 1548 unsigned warn_if_not_align : 6; 1549 unsigned typeless_storage : 1; 1550 unsigned empty_flag : 1; 1551 unsigned spare : 17; 1552 1553 alias_set_type alias_set; 1554 tree pointer_to; 1555 tree reference_to; 1556 union tree_type_symtab { 1557 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address; 1558 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die; 1559 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab; 1560 tree canonical; 1561 tree next_variant; 1562 tree main_variant; 1563 tree context; 1564 tree name; 1565 }; 1566 1567 struct GTY(()) tree_type_with_lang_specific { 1568 struct tree_type_common common; 1569 /* Points to a structure whose details depend on the language in use. */ 1570 struct lang_type *lang_specific; 1571 }; 1572 1573 struct GTY(()) tree_type_non_common { 1574 struct tree_type_with_lang_specific with_lang_specific; 1575 tree values; 1576 tree minval; 1577 tree maxval; 1578 tree lang_1; 1579 }; 1580 1581 struct GTY (()) tree_binfo { 1582 struct tree_common common; 1583 1584 tree offset; 1585 tree vtable; 1586 tree virtuals; 1587 tree vptr_field; 1588 vec<tree, va_gc> *base_accesses; 1589 tree inheritance; 1590 1591 tree vtt_subvtt; 1592 tree vtt_vptr; 1593 1594 vec<tree, va_gc> base_binfos; 1595 }; 1596 1597 struct GTY(()) tree_decl_minimal { 1598 struct tree_common common; 1599 location_t locus; 1600 unsigned int uid; 1601 tree name; 1602 tree context; 1603 }; 1604 1605 struct GTY(()) tree_decl_common { 1606 struct tree_decl_minimal common; 1607 tree size; 1608 1609 ENUM_BITFIELD(machine_mode) mode : 8; 1610 1611 unsigned nonlocal_flag : 1; 1612 unsigned virtual_flag : 1; 1613 unsigned ignored_flag : 1; 1614 unsigned abstract_flag : 1; 1615 unsigned artificial_flag : 1; 1616 unsigned preserve_flag: 1; 1617 unsigned debug_expr_is_from : 1; 1618 1619 unsigned lang_flag_0 : 1; 1620 unsigned lang_flag_1 : 1; 1621 unsigned lang_flag_2 : 1; 1622 unsigned lang_flag_3 : 1; 1623 unsigned lang_flag_4 : 1; 1624 unsigned lang_flag_5 : 1; 1625 unsigned lang_flag_6 : 1; 1626 unsigned lang_flag_7 : 1; 1627 unsigned lang_flag_8 : 1; 1628 1629 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER 1630 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */ 1631 unsigned decl_flag_0 : 1; 1632 /* In FIELD_DECL, this is DECL_BIT_FIELD 1633 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL. 1634 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */ 1635 unsigned decl_flag_1 : 1; 1636 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P 1637 In VAR_DECL, PARM_DECL and RESULT_DECL, this is 1638 DECL_HAS_VALUE_EXPR_P. */ 1639 unsigned decl_flag_2 : 1; 1640 /* In FIELD_DECL, this is DECL_PADDING_P. */ 1641 unsigned decl_flag_3 : 1; 1642 /* Logically, these two would go in a theoretical base shared by var and 1643 parm decl. */ 1644 unsigned gimple_reg_flag : 1; 1645 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */ 1646 unsigned decl_by_reference_flag : 1; 1647 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */ 1648 unsigned decl_read_flag : 1; 1649 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */ 1650 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */ 1651 unsigned decl_nonshareable_flag : 1; 1652 1653 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */ 1654 unsigned int off_align : 6; 1655 1656 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */ 1657 unsigned int align : 6; 1658 1659 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as 1660 TYPE_WARN_IF_NOT_ALIGN. */ 1661 unsigned int warn_if_not_align : 6; 1662 1663 /* 14 bits unused. */ 1664 1665 /* UID for points-to sets, stable over copying from inlining. */ 1666 unsigned int pt_uid; 1667 1668 tree size_unit; 1669 tree initial; 1670 tree attributes; 1671 tree abstract_origin; 1672 1673 /* Points to a structure whose details depend on the language in use. */ 1674 struct lang_decl *lang_specific; 1675 }; 1676 1677 struct GTY(()) tree_decl_with_rtl { 1678 struct tree_decl_common common; 1679 rtx rtl; 1680 }; 1681 1682 struct GTY(()) tree_field_decl { 1683 struct tree_decl_common common; 1684 1685 tree offset; 1686 tree bit_field_type; 1687 tree qualifier; 1688 tree bit_offset; 1689 tree fcontext; 1690 }; 1691 1692 struct GTY(()) tree_label_decl { 1693 struct tree_decl_with_rtl common; 1694 int label_decl_uid; 1695 int eh_landing_pad_nr; 1696 }; 1697 1698 struct GTY(()) tree_result_decl { 1699 struct tree_decl_with_rtl common; 1700 }; 1701 1702 struct GTY(()) tree_const_decl { 1703 struct tree_decl_common common; 1704 }; 1705 1706 struct GTY(()) tree_parm_decl { 1707 struct tree_decl_with_rtl common; 1708 rtx incoming_rtl; 1709 }; 1710 1711 struct GTY(()) tree_decl_with_vis { 1712 struct tree_decl_with_rtl common; 1713 tree assembler_name; 1714 struct symtab_node *symtab_node; 1715 1716 /* Belong to VAR_DECL exclusively. */ 1717 unsigned defer_output : 1; 1718 unsigned hard_register : 1; 1719 unsigned common_flag : 1; 1720 unsigned in_text_section : 1; 1721 unsigned in_constant_pool : 1; 1722 unsigned dllimport_flag : 1; 1723 /* Don't belong to VAR_DECL exclusively. */ 1724 unsigned weak_flag : 1; 1725 1726 unsigned seen_in_bind_expr : 1; 1727 unsigned comdat_flag : 1; 1728 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */ 1729 ENUM_BITFIELD(symbol_visibility) visibility : 2; 1730 unsigned visibility_specified : 1; 1731 1732 /* Belong to FUNCTION_DECL exclusively. */ 1733 unsigned init_priority_p : 1; 1734 /* Used by C++ only. Might become a generic decl flag. */ 1735 unsigned shadowed_for_var_p : 1; 1736 /* Belong to FUNCTION_DECL exclusively. */ 1737 unsigned cxx_constructor : 1; 1738 /* Belong to FUNCTION_DECL exclusively. */ 1739 unsigned cxx_destructor : 1; 1740 /* Belong to FUNCTION_DECL exclusively. */ 1741 unsigned final : 1; 1742 /* Belong to FUNCTION_DECL exclusively. */ 1743 unsigned regdecl_flag : 1; 1744 /* 14 unused bits. */ 1745 }; 1746 1747 struct GTY(()) tree_var_decl { 1748 struct tree_decl_with_vis common; 1749 }; 1750 1751 struct GTY(()) tree_decl_non_common { 1752 struct tree_decl_with_vis common; 1753 /* Almost all FE's use this. */ 1754 tree result; 1755 }; 1756 1757 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the 1758 arguments/result/saved_tree fields by front ends. It was either inherit 1759 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL, 1760 which seemed a bit strange. */ 1761 1762 struct GTY(()) tree_function_decl { 1763 struct tree_decl_non_common common; 1764 1765 struct function *f; 1766 1767 /* Arguments of the function. */ 1768 tree arguments; 1769 /* The personality function. Used for stack unwinding. */ 1770 tree personality; 1771 1772 /* Function specific options that are used by this function. */ 1773 tree function_specific_target; /* target options */ 1774 tree function_specific_optimization; /* optimization options */ 1775 1776 /* Generic function body. */ 1777 tree saved_tree; 1778 /* Index within a virtual table. */ 1779 tree vindex; 1780 1781 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is 1782 DECL_FUNCTION_CODE. Otherwise unused. 1783 ??? The bitfield needs to be able to hold all target function 1784 codes as well. */ 1785 ENUM_BITFIELD(built_in_function) function_code : 12; 1786 ENUM_BITFIELD(built_in_class) built_in_class : 2; 1787 1788 unsigned static_ctor_flag : 1; 1789 unsigned static_dtor_flag : 1; 1790 1791 unsigned uninlinable : 1; 1792 unsigned possibly_inlined : 1; 1793 unsigned novops_flag : 1; 1794 unsigned returns_twice_flag : 1; 1795 unsigned malloc_flag : 1; 1796 unsigned operator_new_flag : 1; 1797 unsigned declared_inline_flag : 1; 1798 unsigned no_inline_warning_flag : 1; 1799 1800 unsigned no_instrument_function_entry_exit : 1; 1801 unsigned no_limit_stack : 1; 1802 unsigned disregard_inline_limits : 1; 1803 unsigned pure_flag : 1; 1804 unsigned looping_const_or_pure_flag : 1; 1805 unsigned has_debug_args_flag : 1; 1806 unsigned versioned_function : 1; 1807 unsigned lambda_function: 1; 1808 /* No bits left. */ 1809 }; 1810 1811 struct GTY(()) tree_translation_unit_decl { 1812 struct tree_decl_common common; 1813 /* Source language of this translation unit. Used for DWARF output. */ 1814 const char * GTY((skip(""))) language; 1815 /* TODO: Non-optimization used to build this translation unit. */ 1816 /* TODO: Root of a partial DWARF tree for global types and decls. */ 1817 }; 1818 1819 struct GTY(()) tree_type_decl { 1820 struct tree_decl_non_common common; 1821 1822 }; 1823 1824 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node 1825 { 1826 struct tree_statement_list_node *prev; 1827 struct tree_statement_list_node *next; 1828 tree stmt; 1829 }; 1830 1831 struct GTY(()) tree_statement_list 1832 { 1833 struct tree_typed typed; 1834 struct tree_statement_list_node *head; 1835 struct tree_statement_list_node *tail; 1836 }; 1837 1838 1839 /* Optimization options used by a function. */ 1840 1841 struct GTY(()) tree_optimization_option { 1842 struct tree_base base; 1843 1844 /* The optimization options used by the user. */ 1845 struct cl_optimization *opts; 1846 1847 /* Target optabs for this set of optimization options. This is of 1848 type `struct target_optabs *'. */ 1849 void *GTY ((atomic)) optabs; 1850 1851 /* The value of this_target_optabs against which the optabs above were 1852 generated. */ 1853 struct target_optabs *GTY ((skip)) base_optabs; 1854 }; 1855 1856 /* Forward declaration, defined in target-globals.h. */ 1857 1858 struct GTY(()) target_globals; 1859 1860 /* Target options used by a function. */ 1861 1862 struct GTY(()) tree_target_option { 1863 struct tree_base base; 1864 1865 /* Target globals for the corresponding target option. */ 1866 struct target_globals *globals; 1867 1868 /* The optimization options used by the user. */ 1869 struct cl_target_option *opts; 1870 }; 1871 1872 /* Define the overall contents of a tree node. 1873 It may be any of the structures declared above 1874 for various types of node. */ 1875 union GTY ((ptr_alias (union lang_tree_node), 1876 desc ("tree_node_structure (&%h)"), variable_size)) tree_node { 1877 struct tree_base GTY ((tag ("TS_BASE"))) base; 1878 struct tree_typed GTY ((tag ("TS_TYPED"))) typed; 1879 struct tree_common GTY ((tag ("TS_COMMON"))) common; 1880 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst; 1881 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst; 1882 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst; 1883 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst; 1884 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector; 1885 struct tree_string GTY ((tag ("TS_STRING"))) string; 1886 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex; 1887 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier; 1888 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal; 1889 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common; 1890 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl; 1891 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) 1892 decl_non_common; 1893 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl; 1894 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis; 1895 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl; 1896 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl; 1897 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl; 1898 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl; 1899 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl; 1900 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl; 1901 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl; 1902 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL"))) 1903 translation_unit_decl; 1904 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common; 1905 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC"))) 1906 type_with_lang_specific; 1907 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON"))) 1908 type_non_common; 1909 struct tree_list GTY ((tag ("TS_LIST"))) list; 1910 struct tree_vec GTY ((tag ("TS_VEC"))) vec; 1911 struct tree_exp GTY ((tag ("TS_EXP"))) exp; 1912 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name; 1913 struct tree_block GTY ((tag ("TS_BLOCK"))) block; 1914 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo; 1915 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list; 1916 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor; 1917 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause; 1918 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization; 1919 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option; 1920 }; 1921 1922 /* Structure describing an attribute and a function to handle it. */ 1923 struct attribute_spec { 1924 /* The name of the attribute (without any leading or trailing __), 1925 or NULL to mark the end of a table of attributes. */ 1926 const char *name; 1927 /* The minimum length of the list of arguments of the attribute. */ 1928 int min_length; 1929 /* The maximum length of the list of arguments of the attribute 1930 (-1 for no maximum). */ 1931 int max_length; 1932 /* Whether this attribute requires a DECL. If it does, it will be passed 1933 from types of DECLs, function return types and array element types to 1934 the DECLs, function types and array types respectively; but when 1935 applied to a type in any other circumstances, it will be ignored with 1936 a warning. (If greater control is desired for a given attribute, 1937 this should be false, and the flags argument to the handler may be 1938 used to gain greater control in that case.) */ 1939 bool decl_required; 1940 /* Whether this attribute requires a type. If it does, it will be passed 1941 from a DECL to the type of that DECL. */ 1942 bool type_required; 1943 /* Whether this attribute requires a function (or method) type. If it does, 1944 it will be passed from a function pointer type to the target type, 1945 and from a function return type (which is not itself a function 1946 pointer type) to the function type. */ 1947 bool function_type_required; 1948 /* Specifies if attribute affects type's identity. */ 1949 bool affects_type_identity; 1950 /* Function to handle this attribute. NODE points to the node to which 1951 the attribute is to be applied. If a DECL, it should be modified in 1952 place; if a TYPE, a copy should be created. NAME is the name of the 1953 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST 1954 of the arguments (which may be NULL). FLAGS gives further information 1955 about the context of the attribute. Afterwards, the attributes will 1956 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate, 1957 unless *NO_ADD_ATTRS is set to true (which should be done on error, 1958 as well as in any other cases when the attributes should not be added 1959 to the DECL or TYPE). Depending on FLAGS, any attributes to be 1960 applied to another type or DECL later may be returned; 1961 otherwise the return value should be NULL_TREE. This pointer may be 1962 NULL if no special handling is required beyond the checks implied 1963 by the rest of this structure. */ 1964 tree (*handler) (tree *node, tree name, tree args, 1965 int flags, bool *no_add_attrs); 1966 1967 /* Specifies the name of an attribute that's mutually exclusive with 1968 this one, and whether the relationship applies to the function, 1969 variable, or type form of the attribute. */ 1970 struct exclusions { 1971 const char *name; 1972 bool function; 1973 bool variable; 1974 bool type; 1975 }; 1976 1977 /* An array of attribute exclusions describing names of other attributes 1978 that this attribute is mutually exclusive with. */ 1979 const exclusions *exclude; 1980 }; 1981 1982 /* These functions allow a front-end to perform a manual layout of a 1983 RECORD_TYPE. (For instance, if the placement of subsequent fields 1984 depends on the placement of fields so far.) Begin by calling 1985 start_record_layout. Then, call place_field for each of the 1986 fields. Then, call finish_record_layout. See layout_type for the 1987 default way in which these functions are used. */ 1988 typedef struct record_layout_info_s { 1989 /* The RECORD_TYPE that we are laying out. */ 1990 tree t; 1991 /* The offset into the record so far, in bytes, not including bits in 1992 BITPOS. */ 1993 tree offset; 1994 /* The last known alignment of SIZE. */ 1995 unsigned int offset_align; 1996 /* The bit position within the last OFFSET_ALIGN bits, in bits. */ 1997 tree bitpos; 1998 /* The alignment of the record so far, in bits. */ 1999 unsigned int record_align; 2000 /* The alignment of the record so far, ignoring #pragma pack and 2001 __attribute__ ((packed)), in bits. */ 2002 unsigned int unpacked_align; 2003 /* The previous field laid out. */ 2004 tree prev_field; 2005 /* The static variables (i.e., class variables, as opposed to 2006 instance variables) encountered in T. */ 2007 vec<tree, va_gc> *pending_statics; 2008 /* Bits remaining in the current alignment group */ 2009 int remaining_in_alignment; 2010 /* True if we've seen a packed field that didn't have normal 2011 alignment anyway. */ 2012 int packed_maybe_necessary; 2013 } *record_layout_info; 2014 2015 /* Iterator for going through the function arguments. */ 2016 struct function_args_iterator { 2017 tree next; /* TREE_LIST pointing to the next argument */ 2018 }; 2019 2020 /* Structures to map from a tree to another tree. */ 2021 struct GTY(()) tree_map_base { 2022 tree from; 2023 }; 2024 2025 /* Map from a tree to another tree. */ 2026 2027 struct GTY((for_user)) tree_map { 2028 struct tree_map_base base; 2029 unsigned int hash; 2030 tree to; 2031 }; 2032 2033 /* Map from a decl tree to another tree. */ 2034 struct GTY((for_user)) tree_decl_map { 2035 struct tree_map_base base; 2036 tree to; 2037 }; 2038 2039 /* Map from a tree to an int. */ 2040 struct GTY((for_user)) tree_int_map { 2041 struct tree_map_base base; 2042 unsigned int to; 2043 }; 2044 2045 /* Map from a decl tree to a tree vector. */ 2046 struct GTY((for_user)) tree_vec_map { 2047 struct tree_map_base base; 2048 vec<tree, va_gc> *to; 2049 }; 2050 2051 /* Abstract iterators for CALL_EXPRs. These static inline definitions 2052 have to go towards the end of tree.h so that union tree_node is fully 2053 defined by this point. */ 2054 2055 /* Structure containing iterator state. */ 2056 struct call_expr_arg_iterator { 2057 tree t; /* the call_expr */ 2058 int n; /* argument count */ 2059 int i; /* next argument index */ 2060 }; 2061 2062 struct const_call_expr_arg_iterator { 2063 const_tree t; /* the call_expr */ 2064 int n; /* argument count */ 2065 int i; /* next argument index */ 2066 }; 2067 2068 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin 2069 function, and flags. */ 2070 struct GTY(()) builtin_info_type { 2071 tree decl; 2072 /* Whether the user can use <xxx> instead of explicitly using calls 2073 to __builtin_<xxx>. */ 2074 unsigned implicit_p : 1; 2075 /* Whether the user has provided a declaration of <xxx>. */ 2076 unsigned declared_p : 1; 2077 }; 2078 2079 /* Information about a _FloatN or _FloatNx type that may be 2080 supported. */ 2081 struct floatn_type_info { 2082 /* The number N in the type name. */ 2083 int n; 2084 /* Whether it is an extended type _FloatNx (true) or an interchange 2085 type (false). */ 2086 bool extended; 2087 }; 2088 2089 2090 /*--------------------------------------------------------------------------- 2091 Global variables 2092 ---------------------------------------------------------------------------*/ 2093 /* Matrix describing the structures contained in a given tree code. */ 2094 extern bool tree_contains_struct[MAX_TREE_CODES][64]; 2095 2096 /* Class of tree given its code. */ 2097 extern const enum tree_code_class tree_code_type[]; 2098 2099 /* Each tree code class has an associated string representation. 2100 These must correspond to the tree_code_class entries. */ 2101 extern const char *const tree_code_class_strings[]; 2102 2103 /* Number of argument-words in each kind of tree-node. */ 2104 extern const unsigned char tree_code_length[]; 2105 2106 /* Vector of all alias pairs for global symbols. */ 2107 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs; 2108 2109 /* Names of all the built_in classes. */ 2110 extern const char *const built_in_class_names[BUILT_IN_LAST]; 2111 2112 /* Names of all the built_in functions. */ 2113 extern const char * built_in_names[(int) END_BUILTINS]; 2114 2115 /* Number of operands and names for each OMP_CLAUSE node. */ 2116 extern unsigned const char omp_clause_num_ops[]; 2117 extern const char * const omp_clause_code_name[]; 2118 2119 /* A vector of all translation-units. */ 2120 extern GTY (()) vec<tree, va_gc> *all_translation_units; 2121 2122 /* Vector of standard trees used by the C compiler. */ 2123 extern GTY(()) tree global_trees[TI_MAX]; 2124 2125 /* The standard C integer types. Use integer_type_kind to index into 2126 this array. */ 2127 extern GTY(()) tree integer_types[itk_none]; 2128 2129 /* Types used to represent sizes. */ 2130 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last]; 2131 2132 /* Arrays for keeping track of tree node statistics. */ 2133 extern uint64_t tree_node_counts[]; 2134 extern uint64_t tree_node_sizes[]; 2135 2136 /* True if we are in gimple form and the actions of the folders need to 2137 be restricted. False if we are not in gimple form and folding is not 2138 restricted to creating gimple expressions. */ 2139 extern bool in_gimple_form; 2140 2141 /* Functional interface to the builtin functions. */ 2142 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS]; 2143 2144 /* If nonzero, an upper limit on alignment of structure fields, in bits, */ 2145 extern unsigned int maximum_field_alignment; 2146 2147 /* Points to the FUNCTION_DECL of the function whose body we are reading. */ 2148 extern GTY(()) tree current_function_decl; 2149 2150 /* Nonzero means a FUNC_BEGIN label was emitted. */ 2151 extern GTY(()) const char * current_function_func_begin_label; 2152 2153 /* Information about the _FloatN and _FloatNx types. */ 2154 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES]; 2155 2156 #endif // GCC_TREE_CORE_H 2157