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 }; 824 825 /* Enum and arrays used for tree allocation stats. 826 Keep in sync with tree.c:tree_node_kind_names. */ 827 enum tree_node_kind { 828 d_kind, 829 t_kind, 830 b_kind, 831 s_kind, 832 r_kind, 833 e_kind, 834 c_kind, 835 id_kind, 836 vec_kind, 837 binfo_kind, 838 ssa_name_kind, 839 constr_kind, 840 x_kind, 841 lang_decl, 842 lang_type, 843 omp_clause_kind, 844 all_kinds 845 }; 846 847 enum annot_expr_kind { 848 annot_expr_ivdep_kind, 849 annot_expr_unroll_kind, 850 annot_expr_no_vector_kind, 851 annot_expr_vector_kind, 852 annot_expr_parallel_kind, 853 annot_expr_kind_last 854 }; 855 856 /*--------------------------------------------------------------------------- 857 Type definitions 858 ---------------------------------------------------------------------------*/ 859 /* When processing aliases at the symbol table level, we need the 860 declaration of target. For this reason we need to queue aliases and 861 process them after all declarations has been produced. */ 862 struct GTY(()) alias_pair { 863 tree decl; 864 tree target; 865 }; 866 867 /* An initialization priority. */ 868 typedef unsigned short priority_type; 869 870 /* The type of a callback function for walking over tree structure. */ 871 typedef tree (*walk_tree_fn) (tree *, int *, void *); 872 873 /* The type of a callback function that represents a custom walk_tree. */ 874 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *), 875 void *, hash_set<tree> *); 876 877 878 /*--------------------------------------------------------------------------- 879 Main data structures 880 ---------------------------------------------------------------------------*/ 881 /* A tree node can represent a data type, a variable, an expression 882 or a statement. Each node has a TREE_CODE which says what kind of 883 thing it represents. Some common codes are: 884 INTEGER_TYPE -- represents a type of integers. 885 ARRAY_TYPE -- represents a type of pointer. 886 VAR_DECL -- represents a declared variable. 887 INTEGER_CST -- represents a constant integer value. 888 PLUS_EXPR -- represents a sum (an expression). 889 890 As for the contents of a tree node: there are some fields 891 that all nodes share. Each TREE_CODE has various special-purpose 892 fields as well. The fields of a node are never accessed directly, 893 always through accessor macros. */ 894 895 /* Every kind of tree node starts with this structure, 896 so all nodes have these fields. 897 898 See the accessor macros, defined below, for documentation of the 899 fields, and the table below which connects the fields and the 900 accessor macros. */ 901 902 struct GTY(()) tree_base { 903 ENUM_BITFIELD(tree_code) code : 16; 904 905 unsigned side_effects_flag : 1; 906 unsigned constant_flag : 1; 907 unsigned addressable_flag : 1; 908 unsigned volatile_flag : 1; 909 unsigned readonly_flag : 1; 910 unsigned asm_written_flag: 1; 911 unsigned nowarning_flag : 1; 912 unsigned visited : 1; 913 914 unsigned used_flag : 1; 915 unsigned nothrow_flag : 1; 916 unsigned static_flag : 1; 917 unsigned public_flag : 1; 918 unsigned private_flag : 1; 919 unsigned protected_flag : 1; 920 unsigned deprecated_flag : 1; 921 unsigned default_def_flag : 1; 922 923 union { 924 /* The bits in the following structure should only be used with 925 accessor macros that constrain inputs with tree checking. */ 926 struct { 927 unsigned lang_flag_0 : 1; 928 unsigned lang_flag_1 : 1; 929 unsigned lang_flag_2 : 1; 930 unsigned lang_flag_3 : 1; 931 unsigned lang_flag_4 : 1; 932 unsigned lang_flag_5 : 1; 933 unsigned lang_flag_6 : 1; 934 unsigned saturating_flag : 1; 935 936 unsigned unsigned_flag : 1; 937 unsigned packed_flag : 1; 938 unsigned user_align : 1; 939 unsigned nameless_flag : 1; 940 unsigned atomic_flag : 1; 941 unsigned spare0 : 3; 942 943 unsigned spare1 : 8; 944 945 /* This field is only used with TREE_TYPE nodes; the only reason it is 946 present in tree_base instead of tree_type is to save space. The size 947 of the field must be large enough to hold addr_space_t values. */ 948 unsigned address_space : 8; 949 } bits; 950 951 /* The following fields are present in tree_base to save space. The 952 nodes using them do not require any of the flags above and so can 953 make better use of the 4-byte sized word. */ 954 955 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */ 956 struct { 957 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 958 its native precision. */ 959 unsigned char unextended; 960 961 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to 962 wider precisions based on its TYPE_SIGN. */ 963 unsigned char extended; 964 965 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in 966 offset_int precision, with smaller integers being extended 967 according to their TYPE_SIGN. This is equal to one of the two 968 fields above but is cached for speed. */ 969 unsigned char offset; 970 } int_length; 971 972 /* VEC length. This field is only used with TREE_VEC. */ 973 int length; 974 975 /* This field is only used with VECTOR_CST. */ 976 struct { 977 /* The value of VECTOR_CST_LOG2_NPATTERNS. */ 978 unsigned int log2_npatterns : 8; 979 980 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */ 981 unsigned int nelts_per_pattern : 8; 982 983 /* For future expansion. */ 984 unsigned int unused : 16; 985 } vector_cst; 986 987 /* SSA version number. This field is only used with SSA_NAME. */ 988 unsigned int version; 989 990 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */ 991 unsigned int chrec_var; 992 993 /* Internal function code. */ 994 enum internal_fn ifn; 995 996 /* The following two fields are used for MEM_REF and TARGET_MEM_REF 997 expression trees and specify known data non-dependences. For 998 two memory references in a function they are known to not 999 alias if dependence_info.clique are equal and dependence_info.base 1000 are distinct. */ 1001 struct { 1002 unsigned short clique; 1003 unsigned short base; 1004 } dependence_info; 1005 } GTY((skip(""))) u; 1006 }; 1007 1008 /* The following table lists the uses of each of the above flags and 1009 for which types of nodes they are defined. 1010 1011 addressable_flag: 1012 1013 TREE_ADDRESSABLE in 1014 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL 1015 SSA_NAME 1016 all types 1017 CONSTRUCTOR, IDENTIFIER_NODE 1018 STMT_EXPR 1019 1020 CALL_EXPR_TAILCALL in 1021 CALL_EXPR 1022 1023 CASE_LOW_SEEN in 1024 CASE_LABEL_EXPR 1025 1026 PREDICT_EXPR_OUTCOME in 1027 PREDICT_EXPR 1028 1029 static_flag: 1030 1031 TREE_STATIC in 1032 VAR_DECL, FUNCTION_DECL 1033 CONSTRUCTOR 1034 1035 TREE_NO_TRAMPOLINE in 1036 ADDR_EXPR 1037 1038 BINFO_VIRTUAL_P in 1039 TREE_BINFO 1040 1041 TREE_SYMBOL_REFERENCED in 1042 IDENTIFIER_NODE 1043 1044 CLEANUP_EH_ONLY in 1045 TARGET_EXPR, WITH_CLEANUP_EXPR 1046 1047 TRY_CATCH_IS_CLEANUP in 1048 TRY_CATCH_EXPR 1049 1050 ASM_INPUT_P in 1051 ASM_EXPR 1052 1053 TYPE_REF_CAN_ALIAS_ALL in 1054 POINTER_TYPE, REFERENCE_TYPE 1055 1056 CASE_HIGH_SEEN in 1057 CASE_LABEL_EXPR 1058 1059 ENUM_IS_SCOPED in 1060 ENUMERAL_TYPE 1061 1062 TRANSACTION_EXPR_OUTER in 1063 TRANSACTION_EXPR 1064 1065 SSA_NAME_ANTI_RANGE_P in 1066 SSA_NAME 1067 1068 MUST_TAIL_CALL in 1069 CALL_EXPR 1070 1071 public_flag: 1072 1073 TREE_OVERFLOW in 1074 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST 1075 1076 TREE_PUBLIC in 1077 VAR_DECL, FUNCTION_DECL 1078 IDENTIFIER_NODE 1079 1080 CONSTRUCTOR_NO_CLEARING in 1081 CONSTRUCTOR 1082 1083 ASM_VOLATILE_P in 1084 ASM_EXPR 1085 1086 CALL_EXPR_VA_ARG_PACK in 1087 CALL_EXPR 1088 1089 TYPE_CACHED_VALUES_P in 1090 all types 1091 1092 SAVE_EXPR_RESOLVED_P in 1093 SAVE_EXPR 1094 1095 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in 1096 OMP_CLAUSE_LASTPRIVATE 1097 1098 OMP_CLAUSE_PRIVATE_DEBUG in 1099 OMP_CLAUSE_PRIVATE 1100 1101 OMP_CLAUSE_LINEAR_NO_COPYIN in 1102 OMP_CLAUSE_LINEAR 1103 1104 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in 1105 OMP_CLAUSE_MAP 1106 1107 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in 1108 OMP_CLAUSE_REDUCTION 1109 1110 TRANSACTION_EXPR_RELAXED in 1111 TRANSACTION_EXPR 1112 1113 FALLTHROUGH_LABEL_P in 1114 LABEL_DECL 1115 1116 SSA_NAME_IS_VIRTUAL_OPERAND in 1117 SSA_NAME 1118 1119 EXPR_LOCATION_WRAPPER_P in 1120 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR 1121 1122 private_flag: 1123 1124 TREE_PRIVATE in 1125 all decls 1126 1127 CALL_EXPR_RETURN_SLOT_OPT in 1128 CALL_EXPR 1129 1130 OMP_SECTION_LAST in 1131 OMP_SECTION 1132 1133 OMP_PARALLEL_COMBINED in 1134 OMP_PARALLEL 1135 1136 OMP_ATOMIC_SEQ_CST in 1137 OMP_ATOMIC* 1138 1139 OMP_CLAUSE_PRIVATE_OUTER_REF in 1140 OMP_CLAUSE_PRIVATE 1141 1142 OMP_CLAUSE_LINEAR_NO_COPYOUT in 1143 OMP_CLAUSE_LINEAR 1144 1145 TYPE_REF_IS_RVALUE in 1146 REFERENCE_TYPE 1147 1148 ENUM_IS_OPAQUE in 1149 ENUMERAL_TYPE 1150 1151 protected_flag: 1152 1153 TREE_PROTECTED in 1154 BLOCK 1155 all decls 1156 1157 CALL_FROM_THUNK_P and 1158 CALL_ALLOCA_FOR_VAR_P in 1159 CALL_EXPR 1160 1161 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in 1162 OMP_CLAUSE_LINEAR 1163 1164 ASM_INLINE_P in 1165 ASM_EXPR 1166 1167 side_effects_flag: 1168 1169 TREE_SIDE_EFFECTS in 1170 all expressions 1171 all decls 1172 all constants 1173 1174 FORCED_LABEL in 1175 LABEL_DECL 1176 1177 volatile_flag: 1178 1179 TREE_THIS_VOLATILE in 1180 all expressions 1181 all decls 1182 1183 TYPE_VOLATILE in 1184 all types 1185 1186 readonly_flag: 1187 1188 TREE_READONLY in 1189 all expressions 1190 all decls 1191 1192 TYPE_READONLY in 1193 all types 1194 1195 constant_flag: 1196 1197 TREE_CONSTANT in 1198 all expressions 1199 all decls 1200 all constants 1201 1202 TYPE_SIZES_GIMPLIFIED in 1203 all types 1204 1205 unsigned_flag: 1206 1207 TYPE_UNSIGNED in 1208 all types 1209 1210 DECL_UNSIGNED in 1211 all decls 1212 1213 asm_written_flag: 1214 1215 TREE_ASM_WRITTEN in 1216 VAR_DECL, FUNCTION_DECL, TYPE_DECL 1217 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE 1218 BLOCK, STRING_CST 1219 1220 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in 1221 SSA_NAME 1222 1223 used_flag: 1224 1225 TREE_USED in 1226 all expressions 1227 all decls 1228 IDENTIFIER_NODE 1229 1230 nothrow_flag: 1231 1232 TREE_NOTHROW in 1233 CALL_EXPR 1234 FUNCTION_DECL 1235 1236 TREE_THIS_NOTRAP in 1237 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF 1238 1239 SSA_NAME_IN_FREE_LIST in 1240 SSA_NAME 1241 1242 DECL_NONALIASED in 1243 VAR_DECL 1244 1245 deprecated_flag: 1246 1247 TREE_DEPRECATED in 1248 all decls 1249 all types 1250 1251 IDENTIFIER_TRANSPARENT_ALIAS in 1252 IDENTIFIER_NODE 1253 1254 visited: 1255 1256 TREE_VISITED in 1257 all trees (used liberally by many passes) 1258 1259 saturating_flag: 1260 1261 TYPE_REVERSE_STORAGE_ORDER in 1262 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE 1263 1264 TYPE_SATURATING in 1265 other types 1266 1267 VAR_DECL_IS_VIRTUAL_OPERAND in 1268 VAR_DECL 1269 1270 nowarning_flag: 1271 1272 TREE_NO_WARNING in 1273 all expressions 1274 all decls 1275 1276 TYPE_ARTIFICIAL in 1277 all types 1278 1279 default_def_flag: 1280 1281 TYPE_FINAL_P in 1282 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE 1283 1284 TYPE_VECTOR_OPAQUE in 1285 VECTOR_TYPE 1286 1287 SSA_NAME_IS_DEFAULT_DEF in 1288 SSA_NAME 1289 1290 DECL_NONLOCAL_FRAME in 1291 VAR_DECL 1292 1293 REF_REVERSE_STORAGE_ORDER in 1294 BIT_FIELD_REF, MEM_REF 1295 1296 FUNC_ADDR_BY_DESCRIPTOR in 1297 ADDR_EXPR 1298 1299 CALL_EXPR_BY_DESCRIPTOR in 1300 CALL_EXPR 1301 */ 1302 1303 struct GTY(()) tree_typed { 1304 struct tree_base base; 1305 tree type; 1306 }; 1307 1308 struct GTY(()) tree_common { 1309 struct tree_typed typed; 1310 tree chain; 1311 }; 1312 1313 struct GTY(()) tree_int_cst { 1314 struct tree_typed typed; 1315 HOST_WIDE_INT val[1]; 1316 }; 1317 1318 1319 struct GTY(()) tree_real_cst { 1320 struct tree_typed typed; 1321 struct real_value * real_cst_ptr; 1322 }; 1323 1324 struct GTY(()) tree_fixed_cst { 1325 struct tree_typed typed; 1326 struct fixed_value * fixed_cst_ptr; 1327 }; 1328 1329 struct GTY(()) tree_string { 1330 struct tree_typed typed; 1331 int length; 1332 char str[1]; 1333 }; 1334 1335 struct GTY(()) tree_complex { 1336 struct tree_typed typed; 1337 tree real; 1338 tree imag; 1339 }; 1340 1341 struct GTY(()) tree_vector { 1342 struct tree_typed typed; 1343 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1]; 1344 }; 1345 1346 struct GTY(()) tree_poly_int_cst { 1347 struct tree_typed typed; 1348 tree coeffs[NUM_POLY_INT_COEFFS]; 1349 }; 1350 1351 struct GTY(()) tree_identifier { 1352 struct tree_common common; 1353 struct ht_identifier id; 1354 }; 1355 1356 struct GTY(()) tree_list { 1357 struct tree_common common; 1358 tree purpose; 1359 tree value; 1360 }; 1361 1362 struct GTY(()) tree_vec { 1363 struct tree_common common; 1364 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1]; 1365 }; 1366 1367 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the 1368 element. INDEX can optionally design the position of VALUE: in arrays, 1369 it is the index where VALUE has to be placed; in structures, it is the 1370 FIELD_DECL of the member. */ 1371 struct GTY(()) constructor_elt { 1372 tree index; 1373 tree value; 1374 }; 1375 1376 struct GTY(()) tree_constructor { 1377 struct tree_typed typed; 1378 vec<constructor_elt, va_gc> *elts; 1379 }; 1380 1381 enum omp_clause_depend_kind 1382 { 1383 OMP_CLAUSE_DEPEND_IN, 1384 OMP_CLAUSE_DEPEND_OUT, 1385 OMP_CLAUSE_DEPEND_INOUT, 1386 OMP_CLAUSE_DEPEND_SOURCE, 1387 OMP_CLAUSE_DEPEND_SINK, 1388 OMP_CLAUSE_DEPEND_LAST 1389 }; 1390 1391 enum omp_clause_proc_bind_kind 1392 { 1393 /* Numbers should match omp_proc_bind_t enum in omp.h. */ 1394 OMP_CLAUSE_PROC_BIND_FALSE = 0, 1395 OMP_CLAUSE_PROC_BIND_TRUE = 1, 1396 OMP_CLAUSE_PROC_BIND_MASTER = 2, 1397 OMP_CLAUSE_PROC_BIND_CLOSE = 3, 1398 OMP_CLAUSE_PROC_BIND_SPREAD = 4, 1399 OMP_CLAUSE_PROC_BIND_LAST 1400 }; 1401 1402 enum omp_clause_linear_kind 1403 { 1404 OMP_CLAUSE_LINEAR_DEFAULT, 1405 OMP_CLAUSE_LINEAR_REF, 1406 OMP_CLAUSE_LINEAR_VAL, 1407 OMP_CLAUSE_LINEAR_UVAL 1408 }; 1409 1410 struct GTY(()) tree_exp { 1411 struct tree_typed typed; 1412 location_t locus; 1413 tree GTY ((special ("tree_exp"), 1414 desc ("TREE_CODE ((tree) &%0)"))) 1415 operands[1]; 1416 }; 1417 1418 /* Immediate use linking structure. This structure is used for maintaining 1419 a doubly linked list of uses of an SSA_NAME. */ 1420 struct GTY(()) ssa_use_operand_t { 1421 struct ssa_use_operand_t* GTY((skip(""))) prev; 1422 struct ssa_use_operand_t* GTY((skip(""))) next; 1423 /* Immediate uses for a given SSA name are maintained as a cyclic 1424 list. To recognize the root of this list, the location field 1425 needs to point to the original SSA name. Since statements and 1426 SSA names are of different data types, we need this union. See 1427 the explanation in struct imm_use_iterator. */ 1428 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc; 1429 tree *GTY((skip(""))) use; 1430 }; 1431 1432 struct GTY(()) tree_ssa_name { 1433 struct tree_typed typed; 1434 1435 /* _DECL wrapped by this SSA name. */ 1436 tree var; 1437 1438 /* Statement that defines this SSA name. */ 1439 gimple *def_stmt; 1440 1441 /* Value range information. */ 1442 union ssa_name_info_type { 1443 /* Pointer attributes used for alias analysis. */ 1444 struct GTY ((tag ("0"))) ptr_info_def *ptr_info; 1445 /* Value range attributes used for zero/sign extension elimination. */ 1446 struct GTY ((tag ("1"))) range_info_def *range_info; 1447 } GTY ((desc ("%1.typed.type ?" \ 1448 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info; 1449 1450 /* Immediate uses list for this SSA_NAME. */ 1451 struct ssa_use_operand_t imm_uses; 1452 }; 1453 1454 struct GTY(()) phi_arg_d { 1455 /* imm_use MUST be the first element in struct because we do some 1456 pointer arithmetic with it. See phi_arg_index_from_use. */ 1457 struct ssa_use_operand_t imm_use; 1458 tree def; 1459 location_t locus; 1460 }; 1461 1462 struct GTY(()) tree_omp_clause { 1463 struct tree_common common; 1464 location_t locus; 1465 enum omp_clause_code code; 1466 union omp_clause_subcode { 1467 enum omp_clause_default_kind default_kind; 1468 enum omp_clause_schedule_kind schedule_kind; 1469 enum omp_clause_depend_kind depend_kind; 1470 /* See include/gomp-constants.h for enum gomp_map_kind's values. */ 1471 unsigned int map_kind; 1472 enum omp_clause_proc_bind_kind proc_bind_kind; 1473 enum tree_code reduction_code; 1474 enum omp_clause_linear_kind linear_kind; 1475 enum tree_code if_modifier; 1476 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target 1477 construct describes. */ 1478 unsigned int dimension; 1479 } GTY ((skip)) subcode; 1480 1481 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's 1482 usage. */ 1483 gimple_seq gimple_reduction_init; 1484 gimple_seq gimple_reduction_merge; 1485 1486 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) 1487 ops[1]; 1488 }; 1489 1490 struct GTY(()) tree_block { 1491 struct tree_base base; 1492 tree chain; 1493 1494 unsigned abstract_flag : 1; 1495 unsigned block_num : 31; 1496 1497 location_t locus; 1498 location_t end_locus; 1499 1500 tree vars; 1501 vec<tree, va_gc> *nonlocalized_vars; 1502 1503 tree subblocks; 1504 tree supercontext; 1505 tree abstract_origin; 1506 tree fragment_origin; 1507 tree fragment_chain; 1508 1509 /* Pointer to the DWARF lexical block. */ 1510 struct die_struct *die; 1511 }; 1512 1513 struct GTY(()) tree_type_common { 1514 struct tree_common common; 1515 tree size; 1516 tree size_unit; 1517 tree attributes; 1518 unsigned int uid; 1519 1520 unsigned int precision : 10; 1521 unsigned no_force_blk_flag : 1; 1522 unsigned needs_constructing_flag : 1; 1523 unsigned transparent_aggr_flag : 1; 1524 unsigned restrict_flag : 1; 1525 unsigned contains_placeholder_bits : 2; 1526 1527 ENUM_BITFIELD(machine_mode) mode : 8; 1528 1529 unsigned string_flag : 1; 1530 unsigned lang_flag_0 : 1; 1531 unsigned lang_flag_1 : 1; 1532 unsigned lang_flag_2 : 1; 1533 unsigned lang_flag_3 : 1; 1534 unsigned lang_flag_4 : 1; 1535 unsigned lang_flag_5 : 1; 1536 unsigned lang_flag_6 : 1; 1537 unsigned lang_flag_7 : 1; 1538 1539 /* TYPE_ALIGN in log2; this has to be large enough to hold values 1540 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT, 1541 the latter being usually the larger. For ELF it is 8<<28, 1542 so we need to store the value 32 (not 31, as we need the zero 1543 as well), hence six bits. */ 1544 unsigned align : 6; 1545 unsigned warn_if_not_align : 6; 1546 unsigned typeless_storage : 1; 1547 unsigned empty_flag : 1; 1548 unsigned spare : 17; 1549 1550 alias_set_type alias_set; 1551 tree pointer_to; 1552 tree reference_to; 1553 union tree_type_symtab { 1554 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address; 1555 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die; 1556 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab; 1557 tree canonical; 1558 tree next_variant; 1559 tree main_variant; 1560 tree context; 1561 tree name; 1562 }; 1563 1564 struct GTY(()) tree_type_with_lang_specific { 1565 struct tree_type_common common; 1566 /* Points to a structure whose details depend on the language in use. */ 1567 struct lang_type *lang_specific; 1568 }; 1569 1570 struct GTY(()) tree_type_non_common { 1571 struct tree_type_with_lang_specific with_lang_specific; 1572 tree values; 1573 tree minval; 1574 tree maxval; 1575 tree lang_1; 1576 }; 1577 1578 struct GTY (()) tree_binfo { 1579 struct tree_common common; 1580 1581 tree offset; 1582 tree vtable; 1583 tree virtuals; 1584 tree vptr_field; 1585 vec<tree, va_gc> *base_accesses; 1586 tree inheritance; 1587 1588 tree vtt_subvtt; 1589 tree vtt_vptr; 1590 1591 vec<tree, va_gc> base_binfos; 1592 }; 1593 1594 struct GTY(()) tree_decl_minimal { 1595 struct tree_common common; 1596 location_t locus; 1597 unsigned int uid; 1598 tree name; 1599 tree context; 1600 }; 1601 1602 struct GTY(()) tree_decl_common { 1603 struct tree_decl_minimal common; 1604 tree size; 1605 1606 ENUM_BITFIELD(machine_mode) mode : 8; 1607 1608 unsigned nonlocal_flag : 1; 1609 unsigned virtual_flag : 1; 1610 unsigned ignored_flag : 1; 1611 unsigned abstract_flag : 1; 1612 unsigned artificial_flag : 1; 1613 unsigned preserve_flag: 1; 1614 unsigned debug_expr_is_from : 1; 1615 1616 unsigned lang_flag_0 : 1; 1617 unsigned lang_flag_1 : 1; 1618 unsigned lang_flag_2 : 1; 1619 unsigned lang_flag_3 : 1; 1620 unsigned lang_flag_4 : 1; 1621 unsigned lang_flag_5 : 1; 1622 unsigned lang_flag_6 : 1; 1623 unsigned lang_flag_7 : 1; 1624 unsigned lang_flag_8 : 1; 1625 1626 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER 1627 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */ 1628 unsigned decl_flag_0 : 1; 1629 /* In FIELD_DECL, this is DECL_BIT_FIELD 1630 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL. 1631 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */ 1632 unsigned decl_flag_1 : 1; 1633 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P 1634 In VAR_DECL, PARM_DECL and RESULT_DECL, this is 1635 DECL_HAS_VALUE_EXPR_P. */ 1636 unsigned decl_flag_2 : 1; 1637 /* In FIELD_DECL, this is DECL_PADDING_P. */ 1638 unsigned decl_flag_3 : 1; 1639 /* Logically, these two would go in a theoretical base shared by var and 1640 parm decl. */ 1641 unsigned gimple_reg_flag : 1; 1642 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */ 1643 unsigned decl_by_reference_flag : 1; 1644 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */ 1645 unsigned decl_read_flag : 1; 1646 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */ 1647 unsigned decl_nonshareable_flag : 1; 1648 1649 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */ 1650 unsigned int off_align : 6; 1651 1652 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */ 1653 unsigned int align : 6; 1654 1655 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as 1656 TYPE_WARN_IF_NOT_ALIGN. */ 1657 unsigned int warn_if_not_align : 6; 1658 1659 /* 14 bits unused. */ 1660 1661 /* UID for points-to sets, stable over copying from inlining. */ 1662 unsigned int pt_uid; 1663 1664 tree size_unit; 1665 tree initial; 1666 tree attributes; 1667 tree abstract_origin; 1668 1669 /* Points to a structure whose details depend on the language in use. */ 1670 struct lang_decl *lang_specific; 1671 }; 1672 1673 struct GTY(()) tree_decl_with_rtl { 1674 struct tree_decl_common common; 1675 rtx rtl; 1676 }; 1677 1678 struct GTY(()) tree_field_decl { 1679 struct tree_decl_common common; 1680 1681 tree offset; 1682 tree bit_field_type; 1683 tree qualifier; 1684 tree bit_offset; 1685 tree fcontext; 1686 }; 1687 1688 struct GTY(()) tree_label_decl { 1689 struct tree_decl_with_rtl common; 1690 int label_decl_uid; 1691 int eh_landing_pad_nr; 1692 }; 1693 1694 struct GTY(()) tree_result_decl { 1695 struct tree_decl_with_rtl common; 1696 }; 1697 1698 struct GTY(()) tree_const_decl { 1699 struct tree_decl_common common; 1700 }; 1701 1702 struct GTY(()) tree_parm_decl { 1703 struct tree_decl_with_rtl common; 1704 rtx incoming_rtl; 1705 }; 1706 1707 struct GTY(()) tree_decl_with_vis { 1708 struct tree_decl_with_rtl common; 1709 tree assembler_name; 1710 struct symtab_node *symtab_node; 1711 1712 /* Belong to VAR_DECL exclusively. */ 1713 unsigned defer_output : 1; 1714 unsigned hard_register : 1; 1715 unsigned common_flag : 1; 1716 unsigned in_text_section : 1; 1717 unsigned in_constant_pool : 1; 1718 unsigned dllimport_flag : 1; 1719 /* Don't belong to VAR_DECL exclusively. */ 1720 unsigned weak_flag : 1; 1721 1722 unsigned seen_in_bind_expr : 1; 1723 unsigned comdat_flag : 1; 1724 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */ 1725 ENUM_BITFIELD(symbol_visibility) visibility : 2; 1726 unsigned visibility_specified : 1; 1727 1728 /* Belong to FUNCTION_DECL exclusively. */ 1729 unsigned init_priority_p : 1; 1730 /* Used by C++ only. Might become a generic decl flag. */ 1731 unsigned shadowed_for_var_p : 1; 1732 /* Belong to FUNCTION_DECL exclusively. */ 1733 unsigned cxx_constructor : 1; 1734 /* Belong to FUNCTION_DECL exclusively. */ 1735 unsigned cxx_destructor : 1; 1736 /* Belong to FUNCTION_DECL exclusively. */ 1737 unsigned final : 1; 1738 /* Belong to FUNCTION_DECL exclusively. */ 1739 unsigned regdecl_flag : 1; 1740 /* 14 unused bits. */ 1741 }; 1742 1743 struct GTY(()) tree_var_decl { 1744 struct tree_decl_with_vis common; 1745 }; 1746 1747 struct GTY(()) tree_decl_non_common { 1748 struct tree_decl_with_vis common; 1749 /* Almost all FE's use this. */ 1750 tree result; 1751 }; 1752 1753 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the 1754 arguments/result/saved_tree fields by front ends. It was either inherit 1755 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL, 1756 which seemed a bit strange. */ 1757 1758 struct GTY(()) tree_function_decl { 1759 struct tree_decl_non_common common; 1760 1761 struct function *f; 1762 1763 /* Arguments of the function. */ 1764 tree arguments; 1765 /* The personality function. Used for stack unwinding. */ 1766 tree personality; 1767 1768 /* Function specific options that are used by this function. */ 1769 tree function_specific_target; /* target options */ 1770 tree function_specific_optimization; /* optimization options */ 1771 1772 /* Generic function body. */ 1773 tree saved_tree; 1774 /* Index within a virtual table. */ 1775 tree vindex; 1776 1777 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is 1778 DECL_FUNCTION_CODE. Otherwise unused. 1779 ??? The bitfield needs to be able to hold all target function 1780 codes as well. */ 1781 ENUM_BITFIELD(built_in_function) function_code : 12; 1782 ENUM_BITFIELD(built_in_class) built_in_class : 2; 1783 1784 unsigned static_ctor_flag : 1; 1785 unsigned static_dtor_flag : 1; 1786 1787 unsigned uninlinable : 1; 1788 unsigned possibly_inlined : 1; 1789 unsigned novops_flag : 1; 1790 unsigned returns_twice_flag : 1; 1791 unsigned malloc_flag : 1; 1792 unsigned operator_new_flag : 1; 1793 unsigned declared_inline_flag : 1; 1794 unsigned no_inline_warning_flag : 1; 1795 1796 unsigned no_instrument_function_entry_exit : 1; 1797 unsigned no_limit_stack : 1; 1798 unsigned disregard_inline_limits : 1; 1799 unsigned pure_flag : 1; 1800 unsigned looping_const_or_pure_flag : 1; 1801 unsigned has_debug_args_flag : 1; 1802 unsigned versioned_function : 1; 1803 unsigned lambda_function: 1; 1804 /* No bits left. */ 1805 }; 1806 1807 struct GTY(()) tree_translation_unit_decl { 1808 struct tree_decl_common common; 1809 /* Source language of this translation unit. Used for DWARF output. */ 1810 const char * GTY((skip(""))) language; 1811 /* TODO: Non-optimization used to build this translation unit. */ 1812 /* TODO: Root of a partial DWARF tree for global types and decls. */ 1813 }; 1814 1815 struct GTY(()) tree_type_decl { 1816 struct tree_decl_non_common common; 1817 1818 }; 1819 1820 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node 1821 { 1822 struct tree_statement_list_node *prev; 1823 struct tree_statement_list_node *next; 1824 tree stmt; 1825 }; 1826 1827 struct GTY(()) tree_statement_list 1828 { 1829 struct tree_typed typed; 1830 struct tree_statement_list_node *head; 1831 struct tree_statement_list_node *tail; 1832 }; 1833 1834 1835 /* Optimization options used by a function. */ 1836 1837 struct GTY(()) tree_optimization_option { 1838 struct tree_base base; 1839 1840 /* The optimization options used by the user. */ 1841 struct cl_optimization *opts; 1842 1843 /* Target optabs for this set of optimization options. This is of 1844 type `struct target_optabs *'. */ 1845 void *GTY ((atomic)) optabs; 1846 1847 /* The value of this_target_optabs against which the optabs above were 1848 generated. */ 1849 struct target_optabs *GTY ((skip)) base_optabs; 1850 }; 1851 1852 /* Forward declaration, defined in target-globals.h. */ 1853 1854 struct GTY(()) target_globals; 1855 1856 /* Target options used by a function. */ 1857 1858 struct GTY(()) tree_target_option { 1859 struct tree_base base; 1860 1861 /* Target globals for the corresponding target option. */ 1862 struct target_globals *globals; 1863 1864 /* The optimization options used by the user. */ 1865 struct cl_target_option *opts; 1866 }; 1867 1868 /* Define the overall contents of a tree node. 1869 It may be any of the structures declared above 1870 for various types of node. */ 1871 union GTY ((ptr_alias (union lang_tree_node), 1872 desc ("tree_node_structure (&%h)"), variable_size)) tree_node { 1873 struct tree_base GTY ((tag ("TS_BASE"))) base; 1874 struct tree_typed GTY ((tag ("TS_TYPED"))) typed; 1875 struct tree_common GTY ((tag ("TS_COMMON"))) common; 1876 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst; 1877 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst; 1878 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst; 1879 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst; 1880 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector; 1881 struct tree_string GTY ((tag ("TS_STRING"))) string; 1882 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex; 1883 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier; 1884 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal; 1885 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common; 1886 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl; 1887 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) 1888 decl_non_common; 1889 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl; 1890 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis; 1891 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl; 1892 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl; 1893 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl; 1894 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl; 1895 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl; 1896 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl; 1897 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl; 1898 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL"))) 1899 translation_unit_decl; 1900 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common; 1901 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC"))) 1902 type_with_lang_specific; 1903 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON"))) 1904 type_non_common; 1905 struct tree_list GTY ((tag ("TS_LIST"))) list; 1906 struct tree_vec GTY ((tag ("TS_VEC"))) vec; 1907 struct tree_exp GTY ((tag ("TS_EXP"))) exp; 1908 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name; 1909 struct tree_block GTY ((tag ("TS_BLOCK"))) block; 1910 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo; 1911 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list; 1912 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor; 1913 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause; 1914 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization; 1915 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option; 1916 }; 1917 1918 /* Structure describing an attribute and a function to handle it. */ 1919 struct attribute_spec { 1920 /* The name of the attribute (without any leading or trailing __), 1921 or NULL to mark the end of a table of attributes. */ 1922 const char *name; 1923 /* The minimum length of the list of arguments of the attribute. */ 1924 int min_length; 1925 /* The maximum length of the list of arguments of the attribute 1926 (-1 for no maximum). */ 1927 int max_length; 1928 /* Whether this attribute requires a DECL. If it does, it will be passed 1929 from types of DECLs, function return types and array element types to 1930 the DECLs, function types and array types respectively; but when 1931 applied to a type in any other circumstances, it will be ignored with 1932 a warning. (If greater control is desired for a given attribute, 1933 this should be false, and the flags argument to the handler may be 1934 used to gain greater control in that case.) */ 1935 bool decl_required; 1936 /* Whether this attribute requires a type. If it does, it will be passed 1937 from a DECL to the type of that DECL. */ 1938 bool type_required; 1939 /* Whether this attribute requires a function (or method) type. If it does, 1940 it will be passed from a function pointer type to the target type, 1941 and from a function return type (which is not itself a function 1942 pointer type) to the function type. */ 1943 bool function_type_required; 1944 /* Specifies if attribute affects type's identity. */ 1945 bool affects_type_identity; 1946 /* Function to handle this attribute. NODE points to the node to which 1947 the attribute is to be applied. If a DECL, it should be modified in 1948 place; if a TYPE, a copy should be created. NAME is the name of the 1949 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST 1950 of the arguments (which may be NULL). FLAGS gives further information 1951 about the context of the attribute. Afterwards, the attributes will 1952 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate, 1953 unless *NO_ADD_ATTRS is set to true (which should be done on error, 1954 as well as in any other cases when the attributes should not be added 1955 to the DECL or TYPE). Depending on FLAGS, any attributes to be 1956 applied to another type or DECL later may be returned; 1957 otherwise the return value should be NULL_TREE. This pointer may be 1958 NULL if no special handling is required beyond the checks implied 1959 by the rest of this structure. */ 1960 tree (*handler) (tree *node, tree name, tree args, 1961 int flags, bool *no_add_attrs); 1962 1963 /* Specifies the name of an attribute that's mutually exclusive with 1964 this one, and whether the relationship applies to the function, 1965 variable, or type form of the attribute. */ 1966 struct exclusions { 1967 const char *name; 1968 bool function; 1969 bool variable; 1970 bool type; 1971 }; 1972 1973 /* An array of attribute exclusions describing names of other attributes 1974 that this attribute is mutually exclusive with. */ 1975 const exclusions *exclude; 1976 }; 1977 1978 /* These functions allow a front-end to perform a manual layout of a 1979 RECORD_TYPE. (For instance, if the placement of subsequent fields 1980 depends on the placement of fields so far.) Begin by calling 1981 start_record_layout. Then, call place_field for each of the 1982 fields. Then, call finish_record_layout. See layout_type for the 1983 default way in which these functions are used. */ 1984 typedef struct record_layout_info_s { 1985 /* The RECORD_TYPE that we are laying out. */ 1986 tree t; 1987 /* The offset into the record so far, in bytes, not including bits in 1988 BITPOS. */ 1989 tree offset; 1990 /* The last known alignment of SIZE. */ 1991 unsigned int offset_align; 1992 /* The bit position within the last OFFSET_ALIGN bits, in bits. */ 1993 tree bitpos; 1994 /* The alignment of the record so far, in bits. */ 1995 unsigned int record_align; 1996 /* The alignment of the record so far, ignoring #pragma pack and 1997 __attribute__ ((packed)), in bits. */ 1998 unsigned int unpacked_align; 1999 /* The previous field laid out. */ 2000 tree prev_field; 2001 /* The static variables (i.e., class variables, as opposed to 2002 instance variables) encountered in T. */ 2003 vec<tree, va_gc> *pending_statics; 2004 /* Bits remaining in the current alignment group */ 2005 int remaining_in_alignment; 2006 /* True if we've seen a packed field that didn't have normal 2007 alignment anyway. */ 2008 int packed_maybe_necessary; 2009 } *record_layout_info; 2010 2011 /* Iterator for going through the function arguments. */ 2012 struct function_args_iterator { 2013 tree next; /* TREE_LIST pointing to the next argument */ 2014 }; 2015 2016 /* Structures to map from a tree to another tree. */ 2017 struct GTY(()) tree_map_base { 2018 tree from; 2019 }; 2020 2021 /* Map from a tree to another tree. */ 2022 2023 struct GTY((for_user)) tree_map { 2024 struct tree_map_base base; 2025 unsigned int hash; 2026 tree to; 2027 }; 2028 2029 /* Map from a decl tree to another tree. */ 2030 struct GTY((for_user)) tree_decl_map { 2031 struct tree_map_base base; 2032 tree to; 2033 }; 2034 2035 /* Map from a tree to an int. */ 2036 struct GTY((for_user)) tree_int_map { 2037 struct tree_map_base base; 2038 unsigned int to; 2039 }; 2040 2041 /* Map from a decl tree to a tree vector. */ 2042 struct GTY((for_user)) tree_vec_map { 2043 struct tree_map_base base; 2044 vec<tree, va_gc> *to; 2045 }; 2046 2047 /* Abstract iterators for CALL_EXPRs. These static inline definitions 2048 have to go towards the end of tree.h so that union tree_node is fully 2049 defined by this point. */ 2050 2051 /* Structure containing iterator state. */ 2052 struct call_expr_arg_iterator { 2053 tree t; /* the call_expr */ 2054 int n; /* argument count */ 2055 int i; /* next argument index */ 2056 }; 2057 2058 struct const_call_expr_arg_iterator { 2059 const_tree t; /* the call_expr */ 2060 int n; /* argument count */ 2061 int i; /* next argument index */ 2062 }; 2063 2064 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin 2065 function, and flags. */ 2066 struct GTY(()) builtin_info_type { 2067 tree decl; 2068 /* Whether the user can use <xxx> instead of explicitly using calls 2069 to __builtin_<xxx>. */ 2070 unsigned implicit_p : 1; 2071 /* Whether the user has provided a declaration of <xxx>. */ 2072 unsigned declared_p : 1; 2073 }; 2074 2075 /* Information about a _FloatN or _FloatNx type that may be 2076 supported. */ 2077 struct floatn_type_info { 2078 /* The number N in the type name. */ 2079 int n; 2080 /* Whether it is an extended type _FloatNx (true) or an interchange 2081 type (false). */ 2082 bool extended; 2083 }; 2084 2085 2086 /*--------------------------------------------------------------------------- 2087 Global variables 2088 ---------------------------------------------------------------------------*/ 2089 /* Matrix describing the structures contained in a given tree code. */ 2090 extern bool tree_contains_struct[MAX_TREE_CODES][64]; 2091 2092 /* Class of tree given its code. */ 2093 extern const enum tree_code_class tree_code_type[]; 2094 2095 /* Each tree code class has an associated string representation. 2096 These must correspond to the tree_code_class entries. */ 2097 extern const char *const tree_code_class_strings[]; 2098 2099 /* Number of argument-words in each kind of tree-node. */ 2100 extern const unsigned char tree_code_length[]; 2101 2102 /* Vector of all alias pairs for global symbols. */ 2103 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs; 2104 2105 /* Names of all the built_in classes. */ 2106 extern const char *const built_in_class_names[BUILT_IN_LAST]; 2107 2108 /* Names of all the built_in functions. */ 2109 extern const char * built_in_names[(int) END_BUILTINS]; 2110 2111 /* Number of operands and names for each OMP_CLAUSE node. */ 2112 extern unsigned const char omp_clause_num_ops[]; 2113 extern const char * const omp_clause_code_name[]; 2114 2115 /* A vector of all translation-units. */ 2116 extern GTY (()) vec<tree, va_gc> *all_translation_units; 2117 2118 /* Vector of standard trees used by the C compiler. */ 2119 extern GTY(()) tree global_trees[TI_MAX]; 2120 2121 /* The standard C integer types. Use integer_type_kind to index into 2122 this array. */ 2123 extern GTY(()) tree integer_types[itk_none]; 2124 2125 /* Types used to represent sizes. */ 2126 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last]; 2127 2128 /* Arrays for keeping track of tree node statistics. */ 2129 extern uint64_t tree_node_counts[]; 2130 extern uint64_t tree_node_sizes[]; 2131 2132 /* True if we are in gimple form and the actions of the folders need to 2133 be restricted. False if we are not in gimple form and folding is not 2134 restricted to creating gimple expressions. */ 2135 extern bool in_gimple_form; 2136 2137 /* Functional interface to the builtin functions. */ 2138 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS]; 2139 2140 /* If nonzero, an upper limit on alignment of structure fields, in bits, */ 2141 extern unsigned int maximum_field_alignment; 2142 2143 /* Points to the FUNCTION_DECL of the function whose body we are reading. */ 2144 extern GTY(()) tree current_function_decl; 2145 2146 /* Nonzero means a FUNC_BEGIN label was emitted. */ 2147 extern GTY(()) const char * current_function_func_begin_label; 2148 2149 /* Information about the _FloatN and _FloatNx types. */ 2150 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES]; 2151 2152 #endif // GCC_TREE_CORE_H 2153