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[official-gcc.git] / gcc / tree-core.h
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1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2017 Free Software Foundation, Inc.
4 This file is part of GCC.
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.
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.
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/>. */
20 #ifndef GCC_TREE_CORE_H
21 #define GCC_TREE_CORE_H
23 #include "symtab.h"
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. */
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;
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)
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)
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)
59 /* Nonzero if this call will never return. */
60 #define ECF_NORETURN (1 << 3)
62 /* Nonzero if this is a call to malloc or a related function. */
63 #define ECF_MALLOC (1 << 4)
65 /* Nonzero if it is plausible that this is a call to alloca. */
66 #define ECF_MAY_BE_ALLOCA (1 << 5)
68 /* Nonzero if this is a call to a function that won't throw an exception. */
69 #define ECF_NOTHROW (1 << 6)
71 /* Nonzero if this is a call to setjmp or a related function. */
72 #define ECF_RETURNS_TWICE (1 << 7)
74 /* Nonzero if this call replaces the current stack frame. */
75 #define ECF_SIBCALL (1 << 8)
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)
81 /* The function does not lead to calls within current function unit. */
82 #define ECF_LEAF (1 << 10)
84 /* Nonzero if this call returns its first argument. */
85 #define ECF_RET1 (1 << 11)
87 /* Nonzero if this call does not affect transactions. */
88 #define ECF_TM_PURE (1 << 12)
90 /* Nonzero if this call is into the transaction runtime library. */
91 #define ECF_TM_BUILTIN (1 << 13)
93 /* Nonzero if this is an indirect call by descriptor. */
94 #define ECF_BY_DESCRIPTOR (1 << 14)
96 /* Nonzero if this is a cold function. */
97 #define ECF_COLD (1 << 15)
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)
104 /* Nonzero if memory reached by the argument is not clobbered. */
105 #define EAF_NOCLOBBER (1 << 1)
107 /* Nonzero if the argument does not escape. */
108 #define EAF_NOESCAPE (1 << 2)
110 /* Nonzero if the argument is not used by the function. */
111 #define EAF_UNUSED (1 << 3)
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)
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)
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)
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,
134 enum tree_code {
135 #include "all-tree.def"
136 MAX_TREE_CODES
139 #undef DEFTREECODE
140 #undef END_OF_BASE_TREE_CODES
142 /* Number of language-independent tree codes. */
143 #define NUM_TREE_CODES \
144 ((int) LAST_AND_UNUSED_TREE_CODE)
146 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
147 (tree_contains_struct[(CODE)][(STRUCT)])
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
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)
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"
169 BEGIN_CHKP_BUILTINS,
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"
176 END_CHKP_BUILTINS = BEGIN_CHKP_BUILTINS * 2 + 1,
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,
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,
192 /* Upper bound on non-language-specific builtins. */
193 END_BUILTINS
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
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"
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"
218 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
219 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
220 #include "internal-fn.def"
222 CFN_LAST
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. */
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,
251 /* OpenACC/OpenMP clause: private (variable_list). */
252 OMP_CLAUSE_PRIVATE,
254 /* OpenMP clause: shared (variable_list). */
255 OMP_CLAUSE_SHARED,
257 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
258 OMP_CLAUSE_FIRSTPRIVATE,
260 /* OpenMP clause: lastprivate (variable_list). */
261 OMP_CLAUSE_LASTPRIVATE,
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,
275 /* OpenMP clause: copyin (variable_list). */
276 OMP_CLAUSE_COPYIN,
278 /* OpenMP clause: copyprivate (variable_list). */
279 OMP_CLAUSE_COPYPRIVATE,
281 /* OpenMP clause: linear (variable-list[:linear-step]). */
282 OMP_CLAUSE_LINEAR,
284 /* OpenMP clause: aligned (variable-list[:alignment]). */
285 OMP_CLAUSE_ALIGNED,
287 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
288 OMP_CLAUSE_DEPEND,
290 /* OpenMP clause: uniform (argument-list). */
291 OMP_CLAUSE_UNIFORM,
293 /* OpenMP clause: to (extended-list).
294 Only when it appears in declare target. */
295 OMP_CLAUSE_TO_DECLARE,
297 /* OpenMP clause: link (variable-list). */
298 OMP_CLAUSE_LINK,
300 /* OpenMP clause: from (variable-list). */
301 OMP_CLAUSE_FROM,
303 /* OpenMP clause: to (variable-list). */
304 OMP_CLAUSE_TO,
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).
311 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
312 OMP_CLAUSE_MAP,
314 /* OpenACC clause: use_device (variable_list).
315 OpenMP clause: use_device_ptr (variable-list). */
316 OMP_CLAUSE_USE_DEVICE_PTR,
318 /* OpenMP clause: is_device_ptr (variable-list). */
319 OMP_CLAUSE_IS_DEVICE_PTR,
321 /* Internal structure to hold OpenACC cache directive's variable-list.
322 #pragma acc cache (variable-list). */
323 OMP_CLAUSE__CACHE_,
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,
333 /* OpenACC clause: async [(integer-expression)]. */
334 OMP_CLAUSE_ASYNC,
336 /* OpenACC clause: wait [(integer-expression-list)]. */
337 OMP_CLAUSE_WAIT,
339 /* OpenACC clause: auto. */
340 OMP_CLAUSE_AUTO,
342 /* OpenACC clause: seq. */
343 OMP_CLAUSE_SEQ,
345 /* Internal clause: temporary for combined loops expansion. */
346 OMP_CLAUSE__LOOPTEMP_,
348 /* OpenACC/OpenMP clause: if (scalar-expression). */
349 OMP_CLAUSE_IF,
351 /* OpenMP clause: num_threads (integer-expression). */
352 OMP_CLAUSE_NUM_THREADS,
354 /* OpenMP clause: schedule. */
355 OMP_CLAUSE_SCHEDULE,
357 /* OpenMP clause: nowait. */
358 OMP_CLAUSE_NOWAIT,
360 /* OpenMP clause: ordered [(constant-integer-expression)]. */
361 OMP_CLAUSE_ORDERED,
363 /* OpenACC/OpenMP clause: default. */
364 OMP_CLAUSE_DEFAULT,
366 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
367 OMP_CLAUSE_COLLAPSE,
369 /* OpenMP clause: untied. */
370 OMP_CLAUSE_UNTIED,
372 /* OpenMP clause: final (scalar-expression). */
373 OMP_CLAUSE_FINAL,
375 /* OpenMP clause: mergeable. */
376 OMP_CLAUSE_MERGEABLE,
378 /* OpenMP clause: device (integer-expression). */
379 OMP_CLAUSE_DEVICE,
381 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
382 OMP_CLAUSE_DIST_SCHEDULE,
384 /* OpenMP clause: inbranch. */
385 OMP_CLAUSE_INBRANCH,
387 /* OpenMP clause: notinbranch. */
388 OMP_CLAUSE_NOTINBRANCH,
390 /* OpenMP clause: num_teams(integer-expression). */
391 OMP_CLAUSE_NUM_TEAMS,
393 /* OpenMP clause: thread_limit(integer-expression). */
394 OMP_CLAUSE_THREAD_LIMIT,
396 /* OpenMP clause: proc_bind ({master,close,spread}). */
397 OMP_CLAUSE_PROC_BIND,
399 /* OpenMP clause: safelen (constant-integer-expression). */
400 OMP_CLAUSE_SAFELEN,
402 /* OpenMP clause: simdlen (constant-integer-expression). */
403 OMP_CLAUSE_SIMDLEN,
405 /* OpenMP clause: for. */
406 OMP_CLAUSE_FOR,
408 /* OpenMP clause: parallel. */
409 OMP_CLAUSE_PARALLEL,
411 /* OpenMP clause: sections. */
412 OMP_CLAUSE_SECTIONS,
414 /* OpenMP clause: taskgroup. */
415 OMP_CLAUSE_TASKGROUP,
417 /* OpenMP clause: priority (integer-expression). */
418 OMP_CLAUSE_PRIORITY,
420 /* OpenMP clause: grainsize (integer-expression). */
421 OMP_CLAUSE_GRAINSIZE,
423 /* OpenMP clause: num_tasks (integer-expression). */
424 OMP_CLAUSE_NUM_TASKS,
426 /* OpenMP clause: nogroup. */
427 OMP_CLAUSE_NOGROUP,
429 /* OpenMP clause: threads. */
430 OMP_CLAUSE_THREADS,
432 /* OpenMP clause: simd. */
433 OMP_CLAUSE_SIMD,
435 /* OpenMP clause: hint (integer-expression). */
436 OMP_CLAUSE_HINT,
438 /* OpenMP clause: defaultmap (tofrom: scalar). */
439 OMP_CLAUSE_DEFAULTMAP,
441 /* Internally used only clause, holding SIMD uid. */
442 OMP_CLAUSE__SIMDUID_,
444 /* Internally used only clause, flag whether this is SIMT simd
445 loop or not. */
446 OMP_CLAUSE__SIMT_,
448 /* Internally used only clause, holding _Cilk_for # of iterations
449 on OMP_PARALLEL. */
450 OMP_CLAUSE__CILK_FOR_COUNT_,
452 /* OpenACC clause: independent. */
453 OMP_CLAUSE_INDEPENDENT,
455 /* OpenACC clause: worker [( [num:] integer-expression)]. */
456 OMP_CLAUSE_WORKER,
458 /* OpenACC clause: vector [( [length:] integer-expression)]. */
459 OMP_CLAUSE_VECTOR,
461 /* OpenACC clause: num_gangs (integer-expression). */
462 OMP_CLAUSE_NUM_GANGS,
464 /* OpenACC clause: num_workers (integer-expression). */
465 OMP_CLAUSE_NUM_WORKERS,
467 /* OpenACC clause: vector_length (integer-expression). */
468 OMP_CLAUSE_VECTOR_LENGTH,
470 /* OpenACC clause: tile ( size-expr-list ). */
471 OMP_CLAUSE_TILE,
473 /* OpenMP internal-only clause to specify grid dimensions of a gridified
474 kernel. */
475 OMP_CLAUSE__GRIDDIM_
478 #undef DEFTREESTRUCT
479 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
480 enum tree_node_structure_enum {
481 #include "treestruct.def"
482 LAST_TS_ENUM
484 #undef DEFTREESTRUCT
486 enum omp_clause_schedule_kind {
487 OMP_CLAUSE_SCHEDULE_STATIC,
488 OMP_CLAUSE_SCHEDULE_DYNAMIC,
489 OMP_CLAUSE_SCHEDULE_GUIDED,
490 OMP_CLAUSE_SCHEDULE_AUTO,
491 OMP_CLAUSE_SCHEDULE_RUNTIME,
492 OMP_CLAUSE_SCHEDULE_CILKFOR,
493 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
494 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
495 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
496 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
499 enum omp_clause_default_kind {
500 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
501 OMP_CLAUSE_DEFAULT_SHARED,
502 OMP_CLAUSE_DEFAULT_NONE,
503 OMP_CLAUSE_DEFAULT_PRIVATE,
504 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
505 OMP_CLAUSE_DEFAULT_PRESENT,
506 OMP_CLAUSE_DEFAULT_LAST
509 /* There is a TYPE_QUAL value for each type qualifier. They can be
510 combined by bitwise-or to form the complete set of qualifiers for a
511 type. */
512 enum cv_qualifier {
513 TYPE_UNQUALIFIED = 0x0,
514 TYPE_QUAL_CONST = 0x1,
515 TYPE_QUAL_VOLATILE = 0x2,
516 TYPE_QUAL_RESTRICT = 0x4,
517 TYPE_QUAL_ATOMIC = 0x8
520 /* Standard named or nameless data types of the C compiler. */
521 enum tree_index {
522 TI_ERROR_MARK,
523 TI_INTQI_TYPE,
524 TI_INTHI_TYPE,
525 TI_INTSI_TYPE,
526 TI_INTDI_TYPE,
527 TI_INTTI_TYPE,
529 TI_UINTQI_TYPE,
530 TI_UINTHI_TYPE,
531 TI_UINTSI_TYPE,
532 TI_UINTDI_TYPE,
533 TI_UINTTI_TYPE,
535 TI_ATOMICQI_TYPE,
536 TI_ATOMICHI_TYPE,
537 TI_ATOMICSI_TYPE,
538 TI_ATOMICDI_TYPE,
539 TI_ATOMICTI_TYPE,
541 TI_UINT16_TYPE,
542 TI_UINT32_TYPE,
543 TI_UINT64_TYPE,
545 TI_VOID,
547 TI_INTEGER_ZERO,
548 TI_INTEGER_ONE,
549 TI_INTEGER_THREE,
550 TI_INTEGER_MINUS_ONE,
551 TI_NULL_POINTER,
553 TI_SIZE_ZERO,
554 TI_SIZE_ONE,
556 TI_BITSIZE_ZERO,
557 TI_BITSIZE_ONE,
558 TI_BITSIZE_UNIT,
560 TI_PUBLIC,
561 TI_PROTECTED,
562 TI_PRIVATE,
564 TI_BOOLEAN_FALSE,
565 TI_BOOLEAN_TRUE,
567 TI_FLOAT_TYPE,
568 TI_DOUBLE_TYPE,
569 TI_LONG_DOUBLE_TYPE,
571 /* The _FloatN and _FloatNx types must be consecutive, and in the
572 same sequence as the corresponding complex types, which must also
573 be consecutive; _FloatN must come before _FloatNx; the order must
574 also be the same as in the floatn_nx_types array and the RID_*
575 values in c-common.h. This is so that iterations over these
576 types work as intended. */
577 TI_FLOAT16_TYPE,
578 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
579 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
580 TI_FLOAT32_TYPE,
581 TI_FLOAT64_TYPE,
582 TI_FLOAT128_TYPE,
583 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
584 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
585 TI_FLOAT32X_TYPE,
586 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
587 TI_FLOAT64X_TYPE,
588 TI_FLOAT128X_TYPE,
589 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
590 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
591 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
592 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
593 - TI_FLOATN_NX_TYPE_FIRST \
594 + 1)
596 /* Put the complex types after their component types, so that in (sequential)
597 tree streaming we can assert that their component types have already been
598 handled (see tree-streamer.c:record_common_node). */
599 TI_COMPLEX_INTEGER_TYPE,
600 TI_COMPLEX_FLOAT_TYPE,
601 TI_COMPLEX_DOUBLE_TYPE,
602 TI_COMPLEX_LONG_DOUBLE_TYPE,
604 TI_COMPLEX_FLOAT16_TYPE,
605 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
606 TI_COMPLEX_FLOAT32_TYPE,
607 TI_COMPLEX_FLOAT64_TYPE,
608 TI_COMPLEX_FLOAT128_TYPE,
609 TI_COMPLEX_FLOAT32X_TYPE,
610 TI_COMPLEX_FLOAT64X_TYPE,
611 TI_COMPLEX_FLOAT128X_TYPE,
613 TI_FLOAT_PTR_TYPE,
614 TI_DOUBLE_PTR_TYPE,
615 TI_LONG_DOUBLE_PTR_TYPE,
616 TI_INTEGER_PTR_TYPE,
618 TI_VOID_TYPE,
619 TI_PTR_TYPE,
620 TI_CONST_PTR_TYPE,
621 TI_SIZE_TYPE,
622 TI_PID_TYPE,
623 TI_PTRDIFF_TYPE,
624 TI_VA_LIST_TYPE,
625 TI_VA_LIST_GPR_COUNTER_FIELD,
626 TI_VA_LIST_FPR_COUNTER_FIELD,
627 TI_BOOLEAN_TYPE,
628 TI_FILEPTR_TYPE,
629 TI_CONST_TM_PTR_TYPE,
630 TI_FENV_T_PTR_TYPE,
631 TI_CONST_FENV_T_PTR_TYPE,
632 TI_FEXCEPT_T_PTR_TYPE,
633 TI_CONST_FEXCEPT_T_PTR_TYPE,
634 TI_POINTER_SIZED_TYPE,
636 TI_POINTER_BOUNDS_TYPE,
638 TI_DFLOAT32_TYPE,
639 TI_DFLOAT64_TYPE,
640 TI_DFLOAT128_TYPE,
641 TI_DFLOAT32_PTR_TYPE,
642 TI_DFLOAT64_PTR_TYPE,
643 TI_DFLOAT128_PTR_TYPE,
645 TI_VOID_LIST_NODE,
647 TI_MAIN_IDENTIFIER,
649 TI_SAT_SFRACT_TYPE,
650 TI_SAT_FRACT_TYPE,
651 TI_SAT_LFRACT_TYPE,
652 TI_SAT_LLFRACT_TYPE,
653 TI_SAT_USFRACT_TYPE,
654 TI_SAT_UFRACT_TYPE,
655 TI_SAT_ULFRACT_TYPE,
656 TI_SAT_ULLFRACT_TYPE,
657 TI_SFRACT_TYPE,
658 TI_FRACT_TYPE,
659 TI_LFRACT_TYPE,
660 TI_LLFRACT_TYPE,
661 TI_USFRACT_TYPE,
662 TI_UFRACT_TYPE,
663 TI_ULFRACT_TYPE,
664 TI_ULLFRACT_TYPE,
665 TI_SAT_SACCUM_TYPE,
666 TI_SAT_ACCUM_TYPE,
667 TI_SAT_LACCUM_TYPE,
668 TI_SAT_LLACCUM_TYPE,
669 TI_SAT_USACCUM_TYPE,
670 TI_SAT_UACCUM_TYPE,
671 TI_SAT_ULACCUM_TYPE,
672 TI_SAT_ULLACCUM_TYPE,
673 TI_SACCUM_TYPE,
674 TI_ACCUM_TYPE,
675 TI_LACCUM_TYPE,
676 TI_LLACCUM_TYPE,
677 TI_USACCUM_TYPE,
678 TI_UACCUM_TYPE,
679 TI_ULACCUM_TYPE,
680 TI_ULLACCUM_TYPE,
681 TI_QQ_TYPE,
682 TI_HQ_TYPE,
683 TI_SQ_TYPE,
684 TI_DQ_TYPE,
685 TI_TQ_TYPE,
686 TI_UQQ_TYPE,
687 TI_UHQ_TYPE,
688 TI_USQ_TYPE,
689 TI_UDQ_TYPE,
690 TI_UTQ_TYPE,
691 TI_SAT_QQ_TYPE,
692 TI_SAT_HQ_TYPE,
693 TI_SAT_SQ_TYPE,
694 TI_SAT_DQ_TYPE,
695 TI_SAT_TQ_TYPE,
696 TI_SAT_UQQ_TYPE,
697 TI_SAT_UHQ_TYPE,
698 TI_SAT_USQ_TYPE,
699 TI_SAT_UDQ_TYPE,
700 TI_SAT_UTQ_TYPE,
701 TI_HA_TYPE,
702 TI_SA_TYPE,
703 TI_DA_TYPE,
704 TI_TA_TYPE,
705 TI_UHA_TYPE,
706 TI_USA_TYPE,
707 TI_UDA_TYPE,
708 TI_UTA_TYPE,
709 TI_SAT_HA_TYPE,
710 TI_SAT_SA_TYPE,
711 TI_SAT_DA_TYPE,
712 TI_SAT_TA_TYPE,
713 TI_SAT_UHA_TYPE,
714 TI_SAT_USA_TYPE,
715 TI_SAT_UDA_TYPE,
716 TI_SAT_UTA_TYPE,
718 TI_OPTIMIZATION_DEFAULT,
719 TI_OPTIMIZATION_CURRENT,
720 TI_TARGET_OPTION_DEFAULT,
721 TI_TARGET_OPTION_CURRENT,
722 TI_CURRENT_TARGET_PRAGMA,
723 TI_CURRENT_OPTIMIZE_PRAGMA,
725 TI_MAX
728 /* An enumeration of the standard C integer types. These must be
729 ordered so that shorter types appear before longer ones, and so
730 that signed types appear before unsigned ones, for the correct
731 functioning of interpret_integer() in c-lex.c. */
732 enum integer_type_kind {
733 itk_char,
734 itk_signed_char,
735 itk_unsigned_char,
736 itk_short,
737 itk_unsigned_short,
738 itk_int,
739 itk_unsigned_int,
740 itk_long,
741 itk_unsigned_long,
742 itk_long_long,
743 itk_unsigned_long_long,
745 itk_intN_0,
746 itk_unsigned_intN_0,
747 itk_intN_1,
748 itk_unsigned_intN_1,
749 itk_intN_2,
750 itk_unsigned_intN_2,
751 itk_intN_3,
752 itk_unsigned_intN_3,
754 itk_none
757 /* A pointer-to-function member type looks like:
759 struct {
760 __P __pfn;
761 ptrdiff_t __delta;
764 If __pfn is NULL, it is a NULL pointer-to-member-function.
766 (Because the vtable is always the first thing in the object, we
767 don't need its offset.) If the function is virtual, then PFN is
768 one plus twice the index into the vtable; otherwise, it is just a
769 pointer to the function.
771 Unfortunately, using the lowest bit of PFN doesn't work in
772 architectures that don't impose alignment requirements on function
773 addresses, or that use the lowest bit to tell one ISA from another,
774 for example. For such architectures, we use the lowest bit of
775 DELTA instead of the lowest bit of the PFN, and DELTA will be
776 multiplied by 2. */
777 enum ptrmemfunc_vbit_where_t {
778 ptrmemfunc_vbit_in_pfn,
779 ptrmemfunc_vbit_in_delta
782 /* Flags that may be passed in the third argument of decl_attributes, and
783 to handler functions for attributes. */
784 enum attribute_flags {
785 /* The type passed in is the type of a DECL, and any attributes that
786 should be passed in again to be applied to the DECL rather than the
787 type should be returned. */
788 ATTR_FLAG_DECL_NEXT = 1,
789 /* The type passed in is a function return type, and any attributes that
790 should be passed in again to be applied to the function type rather
791 than the return type should be returned. */
792 ATTR_FLAG_FUNCTION_NEXT = 2,
793 /* The type passed in is an array element type, and any attributes that
794 should be passed in again to be applied to the array type rather
795 than the element type should be returned. */
796 ATTR_FLAG_ARRAY_NEXT = 4,
797 /* The type passed in is a structure, union or enumeration type being
798 created, and should be modified in place. */
799 ATTR_FLAG_TYPE_IN_PLACE = 8,
800 /* The attributes are being applied by default to a library function whose
801 name indicates known behavior, and should be silently ignored if they
802 are not in fact compatible with the function type. */
803 ATTR_FLAG_BUILT_IN = 16,
804 /* A given attribute has been parsed as a C++-11 attribute. */
805 ATTR_FLAG_CXX11 = 32
808 /* Types used to represent sizes. */
809 enum size_type_kind {
810 stk_sizetype, /* Normal representation of sizes in bytes. */
811 stk_ssizetype, /* Signed representation of sizes in bytes. */
812 stk_bitsizetype, /* Normal representation of sizes in bits. */
813 stk_sbitsizetype, /* Signed representation of sizes in bits. */
814 stk_type_kind_last
817 enum operand_equal_flag {
818 OEP_ONLY_CONST = 1,
819 OEP_PURE_SAME = 2,
820 OEP_MATCH_SIDE_EFFECTS = 4,
821 OEP_ADDRESS_OF = 8,
822 /* Internal within operand_equal_p: */
823 OEP_NO_HASH_CHECK = 16,
824 /* Internal within inchash::add_expr: */
825 OEP_HASH_CHECK = 32,
826 /* Makes operand_equal_p handle more expressions: */
827 OEP_LEXICOGRAPHIC = 64
830 /* Enum and arrays used for tree allocation stats.
831 Keep in sync with tree.c:tree_node_kind_names. */
832 enum tree_node_kind {
833 d_kind,
834 t_kind,
835 b_kind,
836 s_kind,
837 r_kind,
838 e_kind,
839 c_kind,
840 id_kind,
841 vec_kind,
842 binfo_kind,
843 ssa_name_kind,
844 constr_kind,
845 x_kind,
846 lang_decl,
847 lang_type,
848 omp_clause_kind,
849 all_kinds
852 enum annot_expr_kind {
853 annot_expr_ivdep_kind,
854 annot_expr_no_vector_kind,
855 annot_expr_vector_kind,
856 annot_expr_kind_last
859 /*---------------------------------------------------------------------------
860 Type definitions
861 ---------------------------------------------------------------------------*/
862 /* When processing aliases at the symbol table level, we need the
863 declaration of target. For this reason we need to queue aliases and
864 process them after all declarations has been produced. */
865 struct GTY(()) alias_pair {
866 tree decl;
867 tree target;
870 /* An initialization priority. */
871 typedef unsigned short priority_type;
873 /* The type of a callback function for walking over tree structure. */
874 typedef tree (*walk_tree_fn) (tree *, int *, void *);
876 /* The type of a callback function that represents a custom walk_tree. */
877 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
878 void *, hash_set<tree> *);
881 /*---------------------------------------------------------------------------
882 Main data structures
883 ---------------------------------------------------------------------------*/
884 /* A tree node can represent a data type, a variable, an expression
885 or a statement. Each node has a TREE_CODE which says what kind of
886 thing it represents. Some common codes are:
887 INTEGER_TYPE -- represents a type of integers.
888 ARRAY_TYPE -- represents a type of pointer.
889 VAR_DECL -- represents a declared variable.
890 INTEGER_CST -- represents a constant integer value.
891 PLUS_EXPR -- represents a sum (an expression).
893 As for the contents of a tree node: there are some fields
894 that all nodes share. Each TREE_CODE has various special-purpose
895 fields as well. The fields of a node are never accessed directly,
896 always through accessor macros. */
898 /* Every kind of tree node starts with this structure,
899 so all nodes have these fields.
901 See the accessor macros, defined below, for documentation of the
902 fields, and the table below which connects the fields and the
903 accessor macros. */
905 struct GTY(()) tree_base {
906 ENUM_BITFIELD(tree_code) code : 16;
908 unsigned side_effects_flag : 1;
909 unsigned constant_flag : 1;
910 unsigned addressable_flag : 1;
911 unsigned volatile_flag : 1;
912 unsigned readonly_flag : 1;
913 unsigned asm_written_flag: 1;
914 unsigned nowarning_flag : 1;
915 unsigned visited : 1;
917 unsigned used_flag : 1;
918 unsigned nothrow_flag : 1;
919 unsigned static_flag : 1;
920 unsigned public_flag : 1;
921 unsigned private_flag : 1;
922 unsigned protected_flag : 1;
923 unsigned deprecated_flag : 1;
924 unsigned default_def_flag : 1;
926 union {
927 /* The bits in the following structure should only be used with
928 accessor macros that constrain inputs with tree checking. */
929 struct {
930 unsigned lang_flag_0 : 1;
931 unsigned lang_flag_1 : 1;
932 unsigned lang_flag_2 : 1;
933 unsigned lang_flag_3 : 1;
934 unsigned lang_flag_4 : 1;
935 unsigned lang_flag_5 : 1;
936 unsigned lang_flag_6 : 1;
937 unsigned saturating_flag : 1;
939 unsigned unsigned_flag : 1;
940 unsigned packed_flag : 1;
941 unsigned user_align : 1;
942 unsigned nameless_flag : 1;
943 unsigned atomic_flag : 1;
944 unsigned spare0 : 3;
946 unsigned spare1 : 8;
948 /* This field is only used with TREE_TYPE nodes; the only reason it is
949 present in tree_base instead of tree_type is to save space. The size
950 of the field must be large enough to hold addr_space_t values. */
951 unsigned address_space : 8;
952 } bits;
954 /* The following fields are present in tree_base to save space. The
955 nodes using them do not require any of the flags above and so can
956 make better use of the 4-byte sized word. */
958 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
959 struct {
960 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
961 its native precision. */
962 unsigned char unextended;
964 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
965 wider precisions based on its TYPE_SIGN. */
966 unsigned char extended;
968 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
969 offset_int precision, with smaller integers being extended
970 according to their TYPE_SIGN. This is equal to one of the two
971 fields above but is cached for speed. */
972 unsigned char offset;
973 } int_length;
975 /* VEC length. This field is only used with TREE_VEC. */
976 int length;
978 /* SSA version number. This field is only used with SSA_NAME. */
979 unsigned int version;
981 /* Internal function code. */
982 enum internal_fn ifn;
984 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
985 expression trees and specify known data non-dependences. For
986 two memory references in a function they are known to not
987 alias if dependence_info.clique are equal and dependence_info.base
988 are distinct. */
989 struct {
990 unsigned short clique;
991 unsigned short base;
992 } dependence_info;
993 } GTY((skip(""))) u;
996 /* The following table lists the uses of each of the above flags and
997 for which types of nodes they are defined.
999 addressable_flag:
1001 TREE_ADDRESSABLE in
1002 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1003 SSA_NAME
1004 all types
1005 CONSTRUCTOR, IDENTIFIER_NODE
1006 STMT_EXPR
1008 CALL_EXPR_TAILCALL in
1009 CALL_EXPR
1011 CASE_LOW_SEEN in
1012 CASE_LABEL_EXPR
1014 PREDICT_EXPR_OUTCOME in
1015 PREDICT_EXPR
1017 static_flag:
1019 TREE_STATIC in
1020 VAR_DECL, FUNCTION_DECL
1021 CONSTRUCTOR
1023 TREE_NO_TRAMPOLINE in
1024 ADDR_EXPR
1026 BINFO_VIRTUAL_P in
1027 TREE_BINFO
1029 TREE_SYMBOL_REFERENCED in
1030 IDENTIFIER_NODE
1032 CLEANUP_EH_ONLY in
1033 TARGET_EXPR, WITH_CLEANUP_EXPR
1035 TRY_CATCH_IS_CLEANUP in
1036 TRY_CATCH_EXPR
1038 ASM_INPUT_P in
1039 ASM_EXPR
1041 TYPE_REF_CAN_ALIAS_ALL in
1042 POINTER_TYPE, REFERENCE_TYPE
1044 CASE_HIGH_SEEN in
1045 CASE_LABEL_EXPR
1047 ENUM_IS_SCOPED in
1048 ENUMERAL_TYPE
1050 TRANSACTION_EXPR_OUTER in
1051 TRANSACTION_EXPR
1053 SSA_NAME_ANTI_RANGE_P in
1054 SSA_NAME
1056 MUST_TAIL_CALL in
1057 CALL_EXPR
1059 public_flag:
1061 TREE_OVERFLOW in
1062 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1064 TREE_PUBLIC in
1065 VAR_DECL, FUNCTION_DECL
1066 IDENTIFIER_NODE
1068 CONSTRUCTOR_NO_CLEARING in
1069 CONSTRUCTOR
1071 ASM_VOLATILE_P in
1072 ASM_EXPR
1074 CALL_EXPR_VA_ARG_PACK in
1075 CALL_EXPR
1077 TYPE_CACHED_VALUES_P in
1078 all types
1080 SAVE_EXPR_RESOLVED_P in
1081 SAVE_EXPR
1083 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1084 OMP_CLAUSE_LASTPRIVATE
1086 OMP_CLAUSE_PRIVATE_DEBUG in
1087 OMP_CLAUSE_PRIVATE
1089 OMP_CLAUSE_LINEAR_NO_COPYIN in
1090 OMP_CLAUSE_LINEAR
1092 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1093 OMP_CLAUSE_MAP
1095 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1096 OMP_CLAUSE_REDUCTION
1098 TRANSACTION_EXPR_RELAXED in
1099 TRANSACTION_EXPR
1101 FALLTHROUGH_LABEL_P in
1102 LABEL_DECL
1104 SSA_NAME_IS_VIRTUAL_OPERAND in
1105 SSA_NAME
1107 private_flag:
1109 TREE_PRIVATE in
1110 all decls
1112 CALL_EXPR_RETURN_SLOT_OPT in
1113 CALL_EXPR
1115 OMP_SECTION_LAST in
1116 OMP_SECTION
1118 OMP_PARALLEL_COMBINED in
1119 OMP_PARALLEL
1121 OMP_ATOMIC_SEQ_CST in
1122 OMP_ATOMIC*
1124 OMP_CLAUSE_PRIVATE_OUTER_REF in
1125 OMP_CLAUSE_PRIVATE
1127 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1128 OMP_CLAUSE_LINEAR
1130 TYPE_REF_IS_RVALUE in
1131 REFERENCE_TYPE
1133 ENUM_IS_OPAQUE in
1134 ENUMERAL_TYPE
1136 protected_flag:
1138 TREE_PROTECTED in
1139 BLOCK
1140 all decls
1142 CALL_FROM_THUNK_P and
1143 CALL_ALLOCA_FOR_VAR_P in
1144 CALL_EXPR
1146 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1147 OMP_CLAUSE_LINEAR
1149 side_effects_flag:
1151 TREE_SIDE_EFFECTS in
1152 all expressions
1153 all decls
1154 all constants
1156 FORCED_LABEL in
1157 LABEL_DECL
1159 volatile_flag:
1161 TREE_THIS_VOLATILE in
1162 all expressions
1163 all decls
1165 TYPE_VOLATILE in
1166 all types
1168 readonly_flag:
1170 TREE_READONLY in
1171 all expressions
1172 all decls
1174 TYPE_READONLY in
1175 all types
1177 constant_flag:
1179 TREE_CONSTANT in
1180 all expressions
1181 all decls
1182 all constants
1184 TYPE_SIZES_GIMPLIFIED in
1185 all types
1187 unsigned_flag:
1189 TYPE_UNSIGNED in
1190 all types
1192 DECL_UNSIGNED in
1193 all decls
1195 asm_written_flag:
1197 TREE_ASM_WRITTEN in
1198 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1199 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1200 BLOCK, STRING_CST
1202 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1203 SSA_NAME
1205 EXPR_CILK_SPAWN in
1206 CALL_EXPR
1207 AGGR_INIT_EXPR
1209 used_flag:
1211 TREE_USED in
1212 all expressions
1213 all decls
1214 IDENTIFIER_NODE
1216 nothrow_flag:
1218 TREE_NOTHROW in
1219 CALL_EXPR
1220 FUNCTION_DECL
1222 TREE_THIS_NOTRAP in
1223 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1225 SSA_NAME_IN_FREE_LIST in
1226 SSA_NAME
1228 DECL_NONALIASED in
1229 VAR_DECL
1231 deprecated_flag:
1233 TREE_DEPRECATED in
1234 all decls
1235 all types
1237 IDENTIFIER_TRANSPARENT_ALIAS in
1238 IDENTIFIER_NODE
1240 visited:
1242 TREE_VISITED in
1243 all trees (used liberally by many passes)
1245 saturating_flag:
1247 TYPE_REVERSE_STORAGE_ORDER in
1248 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1250 TYPE_SATURATING in
1251 other types
1253 VAR_DECL_IS_VIRTUAL_OPERAND in
1254 VAR_DECL
1256 nowarning_flag:
1258 TREE_NO_WARNING in
1259 all expressions
1260 all decls
1262 TYPE_ARTIFICIAL in
1263 all types
1265 default_def_flag:
1267 TYPE_FINAL_P in
1268 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1270 TYPE_VECTOR_OPAQUE in
1271 VECTOR_TYPE
1273 SSA_NAME_IS_DEFAULT_DEF in
1274 SSA_NAME
1276 DECL_NONLOCAL_FRAME in
1277 VAR_DECL
1279 REF_REVERSE_STORAGE_ORDER in
1280 BIT_FIELD_REF, MEM_REF
1282 FUNC_ADDR_BY_DESCRIPTOR in
1283 ADDR_EXPR
1285 CALL_EXPR_BY_DESCRIPTOR in
1286 CALL_EXPR
1289 struct GTY(()) tree_typed {
1290 struct tree_base base;
1291 tree type;
1294 struct GTY(()) tree_common {
1295 struct tree_typed typed;
1296 tree chain;
1299 struct GTY(()) tree_int_cst {
1300 struct tree_typed typed;
1301 HOST_WIDE_INT val[1];
1305 struct GTY(()) tree_real_cst {
1306 struct tree_typed typed;
1307 struct real_value * real_cst_ptr;
1310 struct GTY(()) tree_fixed_cst {
1311 struct tree_typed typed;
1312 struct fixed_value * fixed_cst_ptr;
1315 struct GTY(()) tree_string {
1316 struct tree_typed typed;
1317 int length;
1318 char str[1];
1321 struct GTY(()) tree_complex {
1322 struct tree_typed typed;
1323 tree real;
1324 tree imag;
1327 struct GTY(()) tree_vector {
1328 struct tree_typed typed;
1329 tree GTY ((length ("TYPE_VECTOR_SUBPARTS (TREE_TYPE ((tree)&%h))"))) elts[1];
1332 struct GTY(()) tree_identifier {
1333 struct tree_common common;
1334 struct ht_identifier id;
1337 struct GTY(()) tree_list {
1338 struct tree_common common;
1339 tree purpose;
1340 tree value;
1343 struct GTY(()) tree_vec {
1344 struct tree_common common;
1345 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1348 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1349 element. INDEX can optionally design the position of VALUE: in arrays,
1350 it is the index where VALUE has to be placed; in structures, it is the
1351 FIELD_DECL of the member. */
1352 struct GTY(()) constructor_elt {
1353 tree index;
1354 tree value;
1357 struct GTY(()) tree_constructor {
1358 struct tree_typed typed;
1359 vec<constructor_elt, va_gc> *elts;
1362 enum omp_clause_depend_kind
1364 OMP_CLAUSE_DEPEND_IN,
1365 OMP_CLAUSE_DEPEND_OUT,
1366 OMP_CLAUSE_DEPEND_INOUT,
1367 OMP_CLAUSE_DEPEND_SOURCE,
1368 OMP_CLAUSE_DEPEND_SINK,
1369 OMP_CLAUSE_DEPEND_LAST
1372 enum omp_clause_proc_bind_kind
1374 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1375 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1376 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1377 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1378 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1379 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1380 OMP_CLAUSE_PROC_BIND_LAST
1383 enum omp_clause_linear_kind
1385 OMP_CLAUSE_LINEAR_DEFAULT,
1386 OMP_CLAUSE_LINEAR_REF,
1387 OMP_CLAUSE_LINEAR_VAL,
1388 OMP_CLAUSE_LINEAR_UVAL
1391 struct GTY(()) tree_exp {
1392 struct tree_typed typed;
1393 location_t locus;
1394 tree GTY ((special ("tree_exp"),
1395 desc ("TREE_CODE ((tree) &%0)")))
1396 operands[1];
1399 /* Immediate use linking structure. This structure is used for maintaining
1400 a doubly linked list of uses of an SSA_NAME. */
1401 struct GTY(()) ssa_use_operand_t {
1402 struct ssa_use_operand_t* GTY((skip(""))) prev;
1403 struct ssa_use_operand_t* GTY((skip(""))) next;
1404 /* Immediate uses for a given SSA name are maintained as a cyclic
1405 list. To recognize the root of this list, the location field
1406 needs to point to the original SSA name. Since statements and
1407 SSA names are of different data types, we need this union. See
1408 the explanation in struct imm_use_iterator. */
1409 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1410 tree *GTY((skip(""))) use;
1413 struct GTY(()) tree_ssa_name {
1414 struct tree_typed typed;
1416 /* _DECL wrapped by this SSA name. */
1417 tree var;
1419 /* Statement that defines this SSA name. */
1420 gimple *def_stmt;
1422 /* Value range information. */
1423 union ssa_name_info_type {
1424 /* Pointer attributes used for alias analysis. */
1425 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1426 /* Value range attributes used for zero/sign extension elimination. */
1427 struct GTY ((tag ("1"))) range_info_def *range_info;
1428 } GTY ((desc ("%1.typed.type ?" \
1429 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1431 /* Immediate uses list for this SSA_NAME. */
1432 struct ssa_use_operand_t imm_uses;
1435 struct GTY(()) phi_arg_d {
1436 /* imm_use MUST be the first element in struct because we do some
1437 pointer arithmetic with it. See phi_arg_index_from_use. */
1438 struct ssa_use_operand_t imm_use;
1439 tree def;
1440 location_t locus;
1443 struct GTY(()) tree_omp_clause {
1444 struct tree_common common;
1445 location_t locus;
1446 enum omp_clause_code code;
1447 union omp_clause_subcode {
1448 enum omp_clause_default_kind default_kind;
1449 enum omp_clause_schedule_kind schedule_kind;
1450 enum omp_clause_depend_kind depend_kind;
1451 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1452 unsigned int map_kind;
1453 enum omp_clause_proc_bind_kind proc_bind_kind;
1454 enum tree_code reduction_code;
1455 enum omp_clause_linear_kind linear_kind;
1456 enum tree_code if_modifier;
1457 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1458 construct describes. */
1459 unsigned int dimension;
1460 } GTY ((skip)) subcode;
1462 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1463 usage. */
1464 gimple_seq gimple_reduction_init;
1465 gimple_seq gimple_reduction_merge;
1467 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1468 ops[1];
1471 struct GTY(()) tree_block {
1472 struct tree_base base;
1473 tree chain;
1475 unsigned abstract_flag : 1;
1476 unsigned block_num : 31;
1478 location_t locus;
1479 location_t end_locus;
1481 tree vars;
1482 vec<tree, va_gc> *nonlocalized_vars;
1484 tree subblocks;
1485 tree supercontext;
1486 tree abstract_origin;
1487 tree fragment_origin;
1488 tree fragment_chain;
1490 /* Pointer to the DWARF lexical block. */
1491 struct die_struct *die;
1494 struct GTY(()) tree_type_common {
1495 struct tree_common common;
1496 tree size;
1497 tree size_unit;
1498 tree attributes;
1499 unsigned int uid;
1501 unsigned int precision : 10;
1502 unsigned no_force_blk_flag : 1;
1503 unsigned needs_constructing_flag : 1;
1504 unsigned transparent_aggr_flag : 1;
1505 unsigned restrict_flag : 1;
1506 unsigned contains_placeholder_bits : 2;
1508 ENUM_BITFIELD(machine_mode) mode : 8;
1510 unsigned string_flag : 1;
1511 unsigned lang_flag_0 : 1;
1512 unsigned lang_flag_1 : 1;
1513 unsigned lang_flag_2 : 1;
1514 unsigned lang_flag_3 : 1;
1515 unsigned lang_flag_4 : 1;
1516 unsigned lang_flag_5 : 1;
1517 unsigned lang_flag_6 : 1;
1518 unsigned lang_flag_7 : 1;
1520 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1521 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1522 the latter being usually the larger. For ELF it is 8<<28,
1523 so we need to store the value 32 (not 31, as we need the zero
1524 as well), hence six bits. */
1525 unsigned align : 6;
1526 unsigned typeless_storage : 1;
1527 unsigned spare : 24;
1529 alias_set_type alias_set;
1530 tree pointer_to;
1531 tree reference_to;
1532 union tree_type_symtab {
1533 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1534 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer;
1535 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1536 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1537 tree canonical;
1538 tree next_variant;
1539 tree main_variant;
1540 tree context;
1541 tree name;
1544 struct GTY(()) tree_type_with_lang_specific {
1545 struct tree_type_common common;
1546 /* Points to a structure whose details depend on the language in use. */
1547 struct lang_type *lang_specific;
1550 struct GTY(()) tree_type_non_common {
1551 struct tree_type_with_lang_specific with_lang_specific;
1552 tree values;
1553 tree minval;
1554 tree maxval;
1555 tree binfo;
1558 struct GTY (()) tree_binfo {
1559 struct tree_common common;
1561 tree offset;
1562 tree vtable;
1563 tree virtuals;
1564 tree vptr_field;
1565 vec<tree, va_gc> *base_accesses;
1566 tree inheritance;
1568 tree vtt_subvtt;
1569 tree vtt_vptr;
1571 vec<tree, va_gc> base_binfos;
1574 struct GTY(()) tree_decl_minimal {
1575 struct tree_common common;
1576 location_t locus;
1577 unsigned int uid;
1578 tree name;
1579 tree context;
1582 struct GTY(()) tree_decl_common {
1583 struct tree_decl_minimal common;
1584 tree size;
1586 ENUM_BITFIELD(machine_mode) mode : 8;
1588 unsigned nonlocal_flag : 1;
1589 unsigned virtual_flag : 1;
1590 unsigned ignored_flag : 1;
1591 unsigned abstract_flag : 1;
1592 unsigned artificial_flag : 1;
1593 unsigned preserve_flag: 1;
1594 unsigned debug_expr_is_from : 1;
1596 unsigned lang_flag_0 : 1;
1597 unsigned lang_flag_1 : 1;
1598 unsigned lang_flag_2 : 1;
1599 unsigned lang_flag_3 : 1;
1600 unsigned lang_flag_4 : 1;
1601 unsigned lang_flag_5 : 1;
1602 unsigned lang_flag_6 : 1;
1603 unsigned lang_flag_7 : 1;
1604 unsigned lang_flag_8 : 1;
1606 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1607 unsigned decl_flag_0 : 1;
1608 /* In FIELD_DECL, this is DECL_BIT_FIELD
1609 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1610 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1611 unsigned decl_flag_1 : 1;
1612 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1613 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1614 DECL_HAS_VALUE_EXPR_P. */
1615 unsigned decl_flag_2 : 1;
1616 /* 1 bit unused. */
1617 unsigned decl_flag_3 : 1;
1618 /* Logically, these two would go in a theoretical base shared by var and
1619 parm decl. */
1620 unsigned gimple_reg_flag : 1;
1621 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1622 unsigned decl_by_reference_flag : 1;
1623 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1624 unsigned decl_read_flag : 1;
1625 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1626 unsigned decl_nonshareable_flag : 1;
1628 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1629 unsigned int off_align : 6;
1631 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1632 unsigned int align : 6;
1634 /* 20 bits unused. */
1636 /* UID for points-to sets, stable over copying from inlining. */
1637 unsigned int pt_uid;
1639 tree size_unit;
1640 tree initial;
1641 tree attributes;
1642 tree abstract_origin;
1644 /* Points to a structure whose details depend on the language in use. */
1645 struct lang_decl *lang_specific;
1648 struct GTY(()) tree_decl_with_rtl {
1649 struct tree_decl_common common;
1650 rtx rtl;
1653 struct GTY(()) tree_field_decl {
1654 struct tree_decl_common common;
1656 tree offset;
1657 tree bit_field_type;
1658 tree qualifier;
1659 tree bit_offset;
1660 tree fcontext;
1663 struct GTY(()) tree_label_decl {
1664 struct tree_decl_with_rtl common;
1665 int label_decl_uid;
1666 int eh_landing_pad_nr;
1669 struct GTY(()) tree_result_decl {
1670 struct tree_decl_with_rtl common;
1673 struct GTY(()) tree_const_decl {
1674 struct tree_decl_common common;
1677 struct GTY(()) tree_parm_decl {
1678 struct tree_decl_with_rtl common;
1679 rtx incoming_rtl;
1682 struct GTY(()) tree_decl_with_vis {
1683 struct tree_decl_with_rtl common;
1684 tree assembler_name;
1685 struct symtab_node *symtab_node;
1687 /* Belong to VAR_DECL exclusively. */
1688 unsigned defer_output : 1;
1689 unsigned hard_register : 1;
1690 unsigned common_flag : 1;
1691 unsigned in_text_section : 1;
1692 unsigned in_constant_pool : 1;
1693 unsigned dllimport_flag : 1;
1694 /* Don't belong to VAR_DECL exclusively. */
1695 unsigned weak_flag : 1;
1697 unsigned seen_in_bind_expr : 1;
1698 unsigned comdat_flag : 1;
1699 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1700 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1701 unsigned visibility_specified : 1;
1703 /* Belong to FUNCTION_DECL exclusively. */
1704 unsigned init_priority_p : 1;
1705 /* Used by C++ only. Might become a generic decl flag. */
1706 unsigned shadowed_for_var_p : 1;
1707 /* Belong to FUNCTION_DECL exclusively. */
1708 unsigned cxx_constructor : 1;
1709 /* Belong to FUNCTION_DECL exclusively. */
1710 unsigned cxx_destructor : 1;
1711 /* Belong to FUNCTION_DECL exclusively. */
1712 unsigned final : 1;
1713 /* Belong to FUNCTION_DECL exclusively. */
1714 unsigned regdecl_flag : 1;
1715 /* 14 unused bits. */
1718 struct GTY(()) tree_var_decl {
1719 struct tree_decl_with_vis common;
1722 struct GTY(()) tree_decl_non_common {
1723 struct tree_decl_with_vis common;
1724 /* Almost all FE's use this. */
1725 tree result;
1728 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1729 arguments/result/saved_tree fields by front ends. It was either inherit
1730 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1731 which seemed a bit strange. */
1733 struct GTY(()) tree_function_decl {
1734 struct tree_decl_non_common common;
1736 struct function *f;
1738 /* Arguments of the function. */
1739 tree arguments;
1740 /* The personality function. Used for stack unwinding. */
1741 tree personality;
1743 /* Function specific options that are used by this function. */
1744 tree function_specific_target; /* target options */
1745 tree function_specific_optimization; /* optimization options */
1747 /* Generic function body. */
1748 tree saved_tree;
1749 /* Index within a virtual table. */
1750 tree vindex;
1752 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1753 DECL_FUNCTION_CODE. Otherwise unused.
1754 ??? The bitfield needs to be able to hold all target function
1755 codes as well. */
1756 ENUM_BITFIELD(built_in_function) function_code : 12;
1757 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1759 unsigned static_ctor_flag : 1;
1760 unsigned static_dtor_flag : 1;
1762 unsigned uninlinable : 1;
1763 unsigned possibly_inlined : 1;
1764 unsigned novops_flag : 1;
1765 unsigned returns_twice_flag : 1;
1766 unsigned malloc_flag : 1;
1767 unsigned operator_new_flag : 1;
1768 unsigned declared_inline_flag : 1;
1769 unsigned no_inline_warning_flag : 1;
1771 unsigned no_instrument_function_entry_exit : 1;
1772 unsigned no_limit_stack : 1;
1773 unsigned disregard_inline_limits : 1;
1774 unsigned pure_flag : 1;
1775 unsigned looping_const_or_pure_flag : 1;
1776 unsigned has_debug_args_flag : 1;
1777 unsigned tm_clone_flag : 1;
1778 unsigned versioned_function : 1;
1779 /* No bits left. */
1782 struct GTY(()) tree_translation_unit_decl {
1783 struct tree_decl_common common;
1784 /* Source language of this translation unit. Used for DWARF output. */
1785 const char * GTY((skip(""))) language;
1786 /* TODO: Non-optimization used to build this translation unit. */
1787 /* TODO: Root of a partial DWARF tree for global types and decls. */
1790 struct GTY(()) tree_type_decl {
1791 struct tree_decl_non_common common;
1795 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1797 struct tree_statement_list_node *prev;
1798 struct tree_statement_list_node *next;
1799 tree stmt;
1802 struct GTY(()) tree_statement_list
1804 struct tree_typed typed;
1805 struct tree_statement_list_node *head;
1806 struct tree_statement_list_node *tail;
1810 /* Optimization options used by a function. */
1812 struct GTY(()) tree_optimization_option {
1813 struct tree_base base;
1815 /* The optimization options used by the user. */
1816 struct cl_optimization *opts;
1818 /* Target optabs for this set of optimization options. This is of
1819 type `struct target_optabs *'. */
1820 void *GTY ((atomic)) optabs;
1822 /* The value of this_target_optabs against which the optabs above were
1823 generated. */
1824 struct target_optabs *GTY ((skip)) base_optabs;
1827 /* Forward declaration, defined in target-globals.h. */
1829 struct GTY(()) target_globals;
1831 /* Target options used by a function. */
1833 struct GTY(()) tree_target_option {
1834 struct tree_base base;
1836 /* Target globals for the corresponding target option. */
1837 struct target_globals *globals;
1839 /* The optimization options used by the user. */
1840 struct cl_target_option *opts;
1843 /* Define the overall contents of a tree node.
1844 It may be any of the structures declared above
1845 for various types of node. */
1846 union GTY ((ptr_alias (union lang_tree_node),
1847 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
1848 struct tree_base GTY ((tag ("TS_BASE"))) base;
1849 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
1850 struct tree_common GTY ((tag ("TS_COMMON"))) common;
1851 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
1852 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
1853 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
1854 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
1855 struct tree_string GTY ((tag ("TS_STRING"))) string;
1856 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
1857 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
1858 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
1859 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
1860 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
1861 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
1862 decl_non_common;
1863 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
1864 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
1865 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
1866 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
1867 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
1868 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
1869 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
1870 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
1871 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
1872 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1873 translation_unit_decl;
1874 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
1875 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1876 type_with_lang_specific;
1877 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
1878 type_non_common;
1879 struct tree_list GTY ((tag ("TS_LIST"))) list;
1880 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
1881 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
1882 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
1883 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
1884 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
1885 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
1886 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
1887 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
1888 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
1889 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
1892 /* Structure describing an attribute and a function to handle it. */
1893 struct attribute_spec {
1894 /* The name of the attribute (without any leading or trailing __),
1895 or NULL to mark the end of a table of attributes. */
1896 const char *name;
1897 /* The minimum length of the list of arguments of the attribute. */
1898 int min_length;
1899 /* The maximum length of the list of arguments of the attribute
1900 (-1 for no maximum). */
1901 int max_length;
1902 /* Whether this attribute requires a DECL. If it does, it will be passed
1903 from types of DECLs, function return types and array element types to
1904 the DECLs, function types and array types respectively; but when
1905 applied to a type in any other circumstances, it will be ignored with
1906 a warning. (If greater control is desired for a given attribute,
1907 this should be false, and the flags argument to the handler may be
1908 used to gain greater control in that case.) */
1909 bool decl_required;
1910 /* Whether this attribute requires a type. If it does, it will be passed
1911 from a DECL to the type of that DECL. */
1912 bool type_required;
1913 /* Whether this attribute requires a function (or method) type. If it does,
1914 it will be passed from a function pointer type to the target type,
1915 and from a function return type (which is not itself a function
1916 pointer type) to the function type. */
1917 bool function_type_required;
1918 /* Function to handle this attribute. NODE points to the node to which
1919 the attribute is to be applied. If a DECL, it should be modified in
1920 place; if a TYPE, a copy should be created. NAME is the name of the
1921 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1922 of the arguments (which may be NULL). FLAGS gives further information
1923 about the context of the attribute. Afterwards, the attributes will
1924 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1925 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1926 as well as in any other cases when the attributes should not be added
1927 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1928 applied to another type or DECL later may be returned;
1929 otherwise the return value should be NULL_TREE. This pointer may be
1930 NULL if no special handling is required beyond the checks implied
1931 by the rest of this structure. */
1932 tree (*handler) (tree *node, tree name, tree args,
1933 int flags, bool *no_add_attrs);
1934 /* Specifies if attribute affects type's identity. */
1935 bool affects_type_identity;
1938 /* These functions allow a front-end to perform a manual layout of a
1939 RECORD_TYPE. (For instance, if the placement of subsequent fields
1940 depends on the placement of fields so far.) Begin by calling
1941 start_record_layout. Then, call place_field for each of the
1942 fields. Then, call finish_record_layout. See layout_type for the
1943 default way in which these functions are used. */
1944 typedef struct record_layout_info_s {
1945 /* The RECORD_TYPE that we are laying out. */
1946 tree t;
1947 /* The offset into the record so far, in bytes, not including bits in
1948 BITPOS. */
1949 tree offset;
1950 /* The last known alignment of SIZE. */
1951 unsigned int offset_align;
1952 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1953 tree bitpos;
1954 /* The alignment of the record so far, in bits. */
1955 unsigned int record_align;
1956 /* The alignment of the record so far, ignoring #pragma pack and
1957 __attribute__ ((packed)), in bits. */
1958 unsigned int unpacked_align;
1959 /* The previous field laid out. */
1960 tree prev_field;
1961 /* The static variables (i.e., class variables, as opposed to
1962 instance variables) encountered in T. */
1963 vec<tree, va_gc> *pending_statics;
1964 /* Bits remaining in the current alignment group */
1965 int remaining_in_alignment;
1966 /* True if we've seen a packed field that didn't have normal
1967 alignment anyway. */
1968 int packed_maybe_necessary;
1969 } *record_layout_info;
1971 /* Iterator for going through the function arguments. */
1972 struct function_args_iterator {
1973 tree next; /* TREE_LIST pointing to the next argument */
1976 /* Structures to map from a tree to another tree. */
1977 struct GTY(()) tree_map_base {
1978 tree from;
1981 /* Map from a tree to another tree. */
1983 struct GTY((for_user)) tree_map {
1984 struct tree_map_base base;
1985 unsigned int hash;
1986 tree to;
1989 /* Map from a decl tree to another tree. */
1990 struct GTY((for_user)) tree_decl_map {
1991 struct tree_map_base base;
1992 tree to;
1995 /* Map from a tree to an int. */
1996 struct GTY((for_user)) tree_int_map {
1997 struct tree_map_base base;
1998 unsigned int to;
2001 /* Map from a decl tree to a tree vector. */
2002 struct GTY((for_user)) tree_vec_map {
2003 struct tree_map_base base;
2004 vec<tree, va_gc> *to;
2007 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2008 have to go towards the end of tree.h so that union tree_node is fully
2009 defined by this point. */
2011 /* Structure containing iterator state. */
2012 struct call_expr_arg_iterator {
2013 tree t; /* the call_expr */
2014 int n; /* argument count */
2015 int i; /* next argument index */
2018 struct const_call_expr_arg_iterator {
2019 const_tree t; /* the call_expr */
2020 int n; /* argument count */
2021 int i; /* next argument index */
2024 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2025 function, and flags. */
2026 struct GTY(()) builtin_info_type {
2027 tree decl;
2028 /* Whether the user can use <xxx> instead of explicitly using calls
2029 to __builtin_<xxx>. */
2030 unsigned implicit_p : 1;
2031 /* Whether the user has provided a declaration of <xxx>. */
2032 unsigned declared_p : 1;
2035 /* Information about a _FloatN or _FloatNx type that may be
2036 supported. */
2037 struct floatn_type_info {
2038 /* The number N in the type name. */
2039 int n;
2040 /* Whether it is an extended type _FloatNx (true) or an interchange
2041 type (false). */
2042 bool extended;
2046 /*---------------------------------------------------------------------------
2047 Global variables
2048 ---------------------------------------------------------------------------*/
2049 /* Matrix describing the structures contained in a given tree code. */
2050 extern unsigned char tree_contains_struct[MAX_TREE_CODES][64];
2052 /* Class of tree given its code. */
2053 extern const enum tree_code_class tree_code_type[];
2055 /* Each tree code class has an associated string representation.
2056 These must correspond to the tree_code_class entries. */
2057 extern const char *const tree_code_class_strings[];
2059 /* Number of argument-words in each kind of tree-node. */
2060 extern const unsigned char tree_code_length[];
2062 /* Vector of all alias pairs for global symbols. */
2063 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2065 /* Names of all the built_in classes. */
2066 extern const char *const built_in_class_names[BUILT_IN_LAST];
2068 /* Names of all the built_in functions. */
2069 extern const char * built_in_names[(int) END_BUILTINS];
2071 /* Number of operands and names for each OMP_CLAUSE node. */
2072 extern unsigned const char omp_clause_num_ops[];
2073 extern const char * const omp_clause_code_name[];
2075 /* A vector of all translation-units. */
2076 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2078 /* Vector of standard trees used by the C compiler. */
2079 extern GTY(()) tree global_trees[TI_MAX];
2081 /* The standard C integer types. Use integer_type_kind to index into
2082 this array. */
2083 extern GTY(()) tree integer_types[itk_none];
2085 /* Types used to represent sizes. */
2086 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2088 /* Arrays for keeping track of tree node statistics. */
2089 extern int tree_node_counts[];
2090 extern int tree_node_sizes[];
2092 /* True if we are in gimple form and the actions of the folders need to
2093 be restricted. False if we are not in gimple form and folding is not
2094 restricted to creating gimple expressions. */
2095 extern bool in_gimple_form;
2097 /* Functional interface to the builtin functions. */
2098 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2100 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2101 extern unsigned int maximum_field_alignment;
2103 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2104 extern GTY(()) tree current_function_decl;
2106 /* Nonzero means a FUNC_BEGIN label was emitted. */
2107 extern GTY(()) const char * current_function_func_begin_label;
2109 /* Information about the _FloatN and _FloatNx types. */
2110 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2112 #endif // GCC_TREE_CORE_H