c++: new-expression is potentially constant in C++20
[official-gcc.git] / gcc / tree-core.h
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1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2022 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. */
101 /* Nonzero if the argument is not used by the function. */
102 #define EAF_UNUSED (1 << 1)
104 /* Following flags come in pairs. First one is about direct dereferences
105 from the parameter, while the second is about memory reachable by
106 recursive dereferences. */
108 /* Nonzero if memory reached by the argument is not clobbered. */
109 #define EAF_NO_DIRECT_CLOBBER (1 << 2)
110 #define EAF_NO_INDIRECT_CLOBBER (1 << 3)
112 /* Nonzero if the argument does not escape. */
113 #define EAF_NO_DIRECT_ESCAPE (1 << 4)
114 #define EAF_NO_INDIRECT_ESCAPE (1 << 5)
116 /* Nonzero if the argument does not escape to return value. */
117 #define EAF_NOT_RETURNED_DIRECTLY (1 << 6)
118 #define EAF_NOT_RETURNED_INDIRECTLY (1 << 7)
120 /* Nonzero if the argument is not read. */
121 #define EAF_NO_DIRECT_READ (1 << 8)
122 #define EAF_NO_INDIRECT_READ (1 << 9)
124 /* Call return flags. */
125 /* Mask for the argument number that is returned. Lower two bits of
126 the return flags, encodes argument slots zero to three. */
127 #define ERF_RETURN_ARG_MASK (3)
129 /* Nonzero if the return value is equal to the argument number
130 flags & ERF_RETURN_ARG_MASK. */
131 #define ERF_RETURNS_ARG (1 << 2)
133 /* Nonzero if the return value does not alias with anything. Functions
134 with the malloc attribute have this set on their return value. */
135 #define ERF_NOALIAS (1 << 3)
138 /*---------------------------------------------------------------------------
139 Enumerations
140 ---------------------------------------------------------------------------*/
141 /* Codes of tree nodes. */
142 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
143 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
145 enum tree_code {
146 #include "all-tree.def"
147 MAX_TREE_CODES
150 #undef DEFTREECODE
151 #undef END_OF_BASE_TREE_CODES
153 /* Number of language-independent tree codes. */
154 #define NUM_TREE_CODES \
155 ((int) LAST_AND_UNUSED_TREE_CODE)
157 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
158 (tree_contains_struct[(CODE)][(STRUCT)])
161 /* Classify which part of the compiler has defined a given builtin function.
162 Note that we assume below that this is no more than two bits. */
163 enum built_in_class {
164 NOT_BUILT_IN = 0,
165 BUILT_IN_FRONTEND,
166 BUILT_IN_MD,
167 BUILT_IN_NORMAL
170 /* Last marker used for LTO stremaing of built_in_class. We cannot add it
171 to the enum since we need the enumb to fit in 2 bits. */
172 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
174 /* Codes that identify the various built in functions
175 so that expand_call can identify them quickly. */
176 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
177 enum built_in_function {
178 #include "builtins.def"
179 /* Complex division routines in libgcc. These are done via builtins
180 because emit_library_call_value can't handle complex values. */
181 BUILT_IN_COMPLEX_MUL_MIN,
182 BUILT_IN_COMPLEX_MUL_MAX
183 = BUILT_IN_COMPLEX_MUL_MIN
184 + MAX_MODE_COMPLEX_FLOAT
185 - MIN_MODE_COMPLEX_FLOAT,
187 BUILT_IN_COMPLEX_DIV_MIN,
188 BUILT_IN_COMPLEX_DIV_MAX
189 = BUILT_IN_COMPLEX_DIV_MIN
190 + MAX_MODE_COMPLEX_FLOAT
191 - MIN_MODE_COMPLEX_FLOAT,
193 /* Upper bound on non-language-specific builtins. */
194 END_BUILTINS
197 /* Internal functions. */
198 enum internal_fn {
199 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
200 #include "internal-fn.def"
201 IFN_LAST
204 /* An enum that combines target-independent built-in functions with
205 internal functions, so that they can be treated in a similar way.
206 The numbers for built-in functions are the same as for the
207 built_in_function enum. The numbers for internal functions
208 start at END_BUITLINS. */
209 enum combined_fn {
210 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
211 CFN_##ENUM = int (ENUM),
212 #include "builtins.def"
215 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
216 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
217 #include "internal-fn.def"
219 CFN_LAST
222 /* Tree code classes. Each tree_code has an associated code class
223 represented by a TREE_CODE_CLASS. */
224 enum tree_code_class {
225 tcc_exceptional, /* An exceptional code (fits no category). */
226 tcc_constant, /* A constant. */
227 /* Order of tcc_type and tcc_declaration is important. */
228 tcc_type, /* A type object code. */
229 tcc_declaration, /* A declaration (also serving as variable refs). */
230 tcc_reference, /* A reference to storage. */
231 tcc_comparison, /* A comparison expression. */
232 tcc_unary, /* A unary arithmetic expression. */
233 tcc_binary, /* A binary arithmetic expression. */
234 tcc_statement, /* A statement expression, which have side effects
235 but usually no interesting value. */
236 tcc_vl_exp, /* A function call or other expression with a
237 variable-length operand vector. */
238 tcc_expression /* Any other expression. */
241 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
242 the tables omp_clause_num_ops and omp_clause_code_name. */
243 enum omp_clause_code {
244 /* Clause zero is special-cased inside the parser
245 (c_parser_omp_variable_list). */
246 OMP_CLAUSE_ERROR = 0,
248 /* OpenACC/OpenMP clause: private (variable_list). */
249 OMP_CLAUSE_PRIVATE,
251 /* OpenMP clause: shared (variable_list). */
252 OMP_CLAUSE_SHARED,
254 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
255 OMP_CLAUSE_FIRSTPRIVATE,
257 /* OpenMP clause: lastprivate (variable_list). */
258 OMP_CLAUSE_LASTPRIVATE,
260 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
261 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
262 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
263 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
264 into the shared one.
265 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
266 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
267 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
268 VAR_DECL placeholder, used like the above for C/C++ array
269 reductions. */
270 OMP_CLAUSE_REDUCTION,
272 /* OpenMP clause: task_reduction (operator:variable_list). */
273 OMP_CLAUSE_TASK_REDUCTION,
275 /* OpenMP clause: in_reduction (operator:variable_list). */
276 OMP_CLAUSE_IN_REDUCTION,
278 /* OpenMP clause: copyin (variable_list). */
279 OMP_CLAUSE_COPYIN,
281 /* OpenMP clause: copyprivate (variable_list). */
282 OMP_CLAUSE_COPYPRIVATE,
284 /* OpenMP clause: linear (variable-list[:linear-step]). */
285 OMP_CLAUSE_LINEAR,
287 /* OpenMP clause: affinity([depend-modifier :] variable-list). */
288 OMP_CLAUSE_AFFINITY,
290 /* OpenMP clause: aligned (variable-list[:alignment]). */
291 OMP_CLAUSE_ALIGNED,
293 /* OpenMP clause: allocate ([allocator:]variable-list). */
294 OMP_CLAUSE_ALLOCATE,
296 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
297 OMP_CLAUSE_DEPEND,
299 /* OpenMP clause: nontemporal (variable-list). */
300 OMP_CLAUSE_NONTEMPORAL,
302 /* OpenMP clause: uniform (argument-list). */
303 OMP_CLAUSE_UNIFORM,
305 /* OpenMP clause: enter (extended-list).
306 to is a deprecated alias when it appears in declare target. */
307 OMP_CLAUSE_ENTER,
309 /* OpenMP clause: link (variable-list). */
310 OMP_CLAUSE_LINK,
312 /* OpenMP clause: detach (event-handle). */
313 OMP_CLAUSE_DETACH,
315 /* OpenACC clause: use_device (variable-list).
316 OpenMP clause: use_device_ptr (ptr-list). */
317 OMP_CLAUSE_USE_DEVICE_PTR,
319 /* OpenMP clause: use_device_addr (variable-list). */
320 OMP_CLAUSE_USE_DEVICE_ADDR,
322 /* OpenMP clause: is_device_ptr (variable-list). */
323 OMP_CLAUSE_IS_DEVICE_PTR,
325 /* OpenMP clause: inclusive (variable-list). */
326 OMP_CLAUSE_INCLUSIVE,
328 /* OpenMP clause: exclusive (variable-list). */
329 OMP_CLAUSE_EXCLUSIVE,
331 /* OpenMP clause: from (variable-list). */
332 OMP_CLAUSE_FROM,
334 /* OpenMP clause: to (variable-list). */
335 OMP_CLAUSE_TO,
337 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
338 device, host (self), present, present_or_copy (pcopy), present_or_copyin
339 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
340 (variable-list).
342 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
343 OMP_CLAUSE_MAP,
345 /* OpenMP clause: has_device_addr (variable-list). */
346 OMP_CLAUSE_HAS_DEVICE_ADDR,
348 /* Internal structure to hold OpenACC cache directive's variable-list.
349 #pragma acc cache (variable-list). */
350 OMP_CLAUSE__CACHE_,
352 /* OpenACC clause: gang [(gang-argument-list)].
353 Where
354 gang-argument-list: [gang-argument-list, ] gang-argument
355 gang-argument: [num:] integer-expression
356 | static: size-expression
357 size-expression: * | integer-expression. */
358 OMP_CLAUSE_GANG,
360 /* OpenACC clause: async [(integer-expression)]. */
361 OMP_CLAUSE_ASYNC,
363 /* OpenACC clause: wait [(integer-expression-list)]. */
364 OMP_CLAUSE_WAIT,
366 /* OpenACC clause: auto. */
367 OMP_CLAUSE_AUTO,
369 /* OpenACC clause: seq. */
370 OMP_CLAUSE_SEQ,
372 /* Internal clause: temporary for combined loops expansion. */
373 OMP_CLAUSE__LOOPTEMP_,
375 /* Internal clause: temporary for task reductions. */
376 OMP_CLAUSE__REDUCTEMP_,
378 /* Internal clause: temporary for lastprivate(conditional:). */
379 OMP_CLAUSE__CONDTEMP_,
381 /* Internal clause: temporary for inscan reductions. */
382 OMP_CLAUSE__SCANTEMP_,
384 /* OpenACC/OpenMP clause: if (scalar-expression). */
385 OMP_CLAUSE_IF,
387 /* OpenMP clause: num_threads (integer-expression). */
388 OMP_CLAUSE_NUM_THREADS,
390 /* OpenMP clause: schedule. */
391 OMP_CLAUSE_SCHEDULE,
393 /* OpenMP clause: nowait. */
394 OMP_CLAUSE_NOWAIT,
396 /* OpenMP clause: ordered [(constant-integer-expression)]. */
397 OMP_CLAUSE_ORDERED,
399 /* OpenACC/OpenMP clause: default. */
400 OMP_CLAUSE_DEFAULT,
402 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
403 OMP_CLAUSE_COLLAPSE,
405 /* OpenMP clause: untied. */
406 OMP_CLAUSE_UNTIED,
408 /* OpenMP clause: final (scalar-expression). */
409 OMP_CLAUSE_FINAL,
411 /* OpenMP clause: mergeable. */
412 OMP_CLAUSE_MERGEABLE,
414 /* OpenMP clause: device (integer-expression). */
415 OMP_CLAUSE_DEVICE,
417 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
418 OMP_CLAUSE_DIST_SCHEDULE,
420 /* OpenMP clause: inbranch. */
421 OMP_CLAUSE_INBRANCH,
423 /* OpenMP clause: notinbranch. */
424 OMP_CLAUSE_NOTINBRANCH,
426 /* OpenMP clause: num_teams(integer-expression). */
427 OMP_CLAUSE_NUM_TEAMS,
429 /* OpenMP clause: thread_limit(integer-expression). */
430 OMP_CLAUSE_THREAD_LIMIT,
432 /* OpenMP clause: proc_bind ({master,close,spread}). */
433 OMP_CLAUSE_PROC_BIND,
435 /* OpenMP clause: safelen (constant-integer-expression). */
436 OMP_CLAUSE_SAFELEN,
438 /* OpenMP clause: simdlen (constant-integer-expression). */
439 OMP_CLAUSE_SIMDLEN,
441 /* OpenMP clause: device_type ({host,nohost,any}). */
442 OMP_CLAUSE_DEVICE_TYPE,
444 /* OpenMP clause: for. */
445 OMP_CLAUSE_FOR,
447 /* OpenMP clause: parallel. */
448 OMP_CLAUSE_PARALLEL,
450 /* OpenMP clause: sections. */
451 OMP_CLAUSE_SECTIONS,
453 /* OpenMP clause: taskgroup. */
454 OMP_CLAUSE_TASKGROUP,
456 /* OpenMP clause: priority (integer-expression). */
457 OMP_CLAUSE_PRIORITY,
459 /* OpenMP clause: grainsize (integer-expression). */
460 OMP_CLAUSE_GRAINSIZE,
462 /* OpenMP clause: num_tasks (integer-expression). */
463 OMP_CLAUSE_NUM_TASKS,
465 /* OpenMP clause: nogroup. */
466 OMP_CLAUSE_NOGROUP,
468 /* OpenMP clause: threads. */
469 OMP_CLAUSE_THREADS,
471 /* OpenMP clause: simd. */
472 OMP_CLAUSE_SIMD,
474 /* OpenMP clause: hint (integer-expression). */
475 OMP_CLAUSE_HINT,
477 /* OpenMP clause: defaultmap (tofrom: scalar). */
478 OMP_CLAUSE_DEFAULTMAP,
480 /* OpenMP clause: order (concurrent). */
481 OMP_CLAUSE_ORDER,
483 /* OpenMP clause: bind (binding). */
484 OMP_CLAUSE_BIND,
486 /* OpenMP clause: filter (integer-expression). */
487 OMP_CLAUSE_FILTER,
489 /* Internally used only clause, holding SIMD uid. */
490 OMP_CLAUSE__SIMDUID_,
492 /* Internally used only clause, flag whether this is SIMT simd
493 loop or not. */
494 OMP_CLAUSE__SIMT_,
496 /* OpenACC clause: independent. */
497 OMP_CLAUSE_INDEPENDENT,
499 /* OpenACC clause: worker [( [num:] integer-expression)]. */
500 OMP_CLAUSE_WORKER,
502 /* OpenACC clause: vector [( [length:] integer-expression)]. */
503 OMP_CLAUSE_VECTOR,
505 /* OpenACC clause: num_gangs (integer-expression). */
506 OMP_CLAUSE_NUM_GANGS,
508 /* OpenACC clause: num_workers (integer-expression). */
509 OMP_CLAUSE_NUM_WORKERS,
511 /* OpenACC clause: vector_length (integer-expression). */
512 OMP_CLAUSE_VECTOR_LENGTH,
514 /* OpenACC clause: tile ( size-expr-list ). */
515 OMP_CLAUSE_TILE,
517 /* OpenACC clause: if_present. */
518 OMP_CLAUSE_IF_PRESENT,
520 /* OpenACC clause: finalize. */
521 OMP_CLAUSE_FINALIZE,
523 /* OpenACC clause: nohost. */
524 OMP_CLAUSE_NOHOST,
527 #undef DEFTREESTRUCT
528 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
529 enum tree_node_structure_enum {
530 #include "treestruct.def"
531 LAST_TS_ENUM
533 #undef DEFTREESTRUCT
535 enum omp_clause_schedule_kind {
536 OMP_CLAUSE_SCHEDULE_STATIC,
537 OMP_CLAUSE_SCHEDULE_DYNAMIC,
538 OMP_CLAUSE_SCHEDULE_GUIDED,
539 OMP_CLAUSE_SCHEDULE_AUTO,
540 OMP_CLAUSE_SCHEDULE_RUNTIME,
541 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
542 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
543 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
544 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
547 enum omp_clause_default_kind {
548 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
549 OMP_CLAUSE_DEFAULT_SHARED,
550 OMP_CLAUSE_DEFAULT_NONE,
551 OMP_CLAUSE_DEFAULT_PRIVATE,
552 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
553 OMP_CLAUSE_DEFAULT_PRESENT,
554 OMP_CLAUSE_DEFAULT_LAST
557 enum omp_clause_defaultmap_kind {
558 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED,
559 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR,
560 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE,
561 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE,
562 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER,
563 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK = 7,
564 OMP_CLAUSE_DEFAULTMAP_ALLOC = 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
565 OMP_CLAUSE_DEFAULTMAP_TO = 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
566 OMP_CLAUSE_DEFAULTMAP_FROM = 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
567 OMP_CLAUSE_DEFAULTMAP_TOFROM = 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
568 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE
569 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
570 OMP_CLAUSE_DEFAULTMAP_NONE = 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
571 OMP_CLAUSE_DEFAULTMAP_DEFAULT
572 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
573 OMP_CLAUSE_DEFAULTMAP_MASK = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1)
576 enum omp_clause_bind_kind {
577 OMP_CLAUSE_BIND_TEAMS,
578 OMP_CLAUSE_BIND_PARALLEL,
579 OMP_CLAUSE_BIND_THREAD
582 /* memory-order-clause on OpenMP atomic/flush constructs or
583 argument of atomic_default_mem_order clause. */
584 enum omp_memory_order {
585 OMP_MEMORY_ORDER_UNSPECIFIED,
586 OMP_MEMORY_ORDER_RELAXED,
587 OMP_MEMORY_ORDER_ACQUIRE,
588 OMP_MEMORY_ORDER_RELEASE,
589 OMP_MEMORY_ORDER_ACQ_REL,
590 OMP_MEMORY_ORDER_SEQ_CST,
591 OMP_MEMORY_ORDER_MASK = 7,
592 OMP_FAIL_MEMORY_ORDER_UNSPECIFIED = OMP_MEMORY_ORDER_UNSPECIFIED * 8,
593 OMP_FAIL_MEMORY_ORDER_RELAXED = OMP_MEMORY_ORDER_RELAXED * 8,
594 OMP_FAIL_MEMORY_ORDER_ACQUIRE = OMP_MEMORY_ORDER_ACQUIRE * 8,
595 OMP_FAIL_MEMORY_ORDER_RELEASE = OMP_MEMORY_ORDER_RELEASE * 8,
596 OMP_FAIL_MEMORY_ORDER_ACQ_REL = OMP_MEMORY_ORDER_ACQ_REL * 8,
597 OMP_FAIL_MEMORY_ORDER_SEQ_CST = OMP_MEMORY_ORDER_SEQ_CST * 8,
598 OMP_FAIL_MEMORY_ORDER_MASK = OMP_MEMORY_ORDER_MASK * 8
600 #define OMP_FAIL_MEMORY_ORDER_SHIFT 3
602 /* There is a TYPE_QUAL value for each type qualifier. They can be
603 combined by bitwise-or to form the complete set of qualifiers for a
604 type. */
605 enum cv_qualifier {
606 TYPE_UNQUALIFIED = 0x0,
607 TYPE_QUAL_CONST = 0x1,
608 TYPE_QUAL_VOLATILE = 0x2,
609 TYPE_QUAL_RESTRICT = 0x4,
610 TYPE_QUAL_ATOMIC = 0x8
613 /* Standard named or nameless data types of the C compiler. */
614 enum tree_index {
615 TI_ERROR_MARK,
616 TI_INTQI_TYPE,
617 TI_INTHI_TYPE,
618 TI_INTSI_TYPE,
619 TI_INTDI_TYPE,
620 TI_INTTI_TYPE,
622 TI_UINTQI_TYPE,
623 TI_UINTHI_TYPE,
624 TI_UINTSI_TYPE,
625 TI_UINTDI_TYPE,
626 TI_UINTTI_TYPE,
628 TI_ATOMICQI_TYPE,
629 TI_ATOMICHI_TYPE,
630 TI_ATOMICSI_TYPE,
631 TI_ATOMICDI_TYPE,
632 TI_ATOMICTI_TYPE,
634 TI_UINT16_TYPE,
635 TI_UINT32_TYPE,
636 TI_UINT64_TYPE,
637 TI_UINT128_TYPE,
639 TI_VOID,
641 TI_INTEGER_ZERO,
642 TI_INTEGER_ONE,
643 TI_INTEGER_THREE,
644 TI_INTEGER_MINUS_ONE,
645 TI_NULL_POINTER,
647 TI_SIZE_ZERO,
648 TI_SIZE_ONE,
650 TI_BITSIZE_ZERO,
651 TI_BITSIZE_ONE,
652 TI_BITSIZE_UNIT,
654 TI_PUBLIC,
655 TI_PROTECTED,
656 TI_PRIVATE,
658 TI_BOOLEAN_FALSE,
659 TI_BOOLEAN_TRUE,
661 TI_FLOAT_TYPE,
662 TI_DOUBLE_TYPE,
663 TI_LONG_DOUBLE_TYPE,
665 /* The _FloatN and _FloatNx types must be consecutive, and in the
666 same sequence as the corresponding complex types, which must also
667 be consecutive; _FloatN must come before _FloatNx; the order must
668 also be the same as in the floatn_nx_types array and the RID_*
669 values in c-common.h. This is so that iterations over these
670 types work as intended. */
671 TI_FLOAT16_TYPE,
672 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
673 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
674 TI_FLOAT32_TYPE,
675 TI_FLOAT64_TYPE,
676 TI_FLOAT128_TYPE,
677 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
678 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
679 TI_FLOAT32X_TYPE,
680 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
681 TI_FLOAT64X_TYPE,
682 TI_FLOAT128X_TYPE,
683 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
684 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
685 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
686 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
687 - TI_FLOATN_NX_TYPE_FIRST \
688 + 1)
690 /* Put the complex types after their component types, so that in (sequential)
691 tree streaming we can assert that their component types have already been
692 handled (see tree-streamer.cc:record_common_node). */
693 TI_COMPLEX_INTEGER_TYPE,
694 TI_COMPLEX_FLOAT_TYPE,
695 TI_COMPLEX_DOUBLE_TYPE,
696 TI_COMPLEX_LONG_DOUBLE_TYPE,
698 TI_COMPLEX_FLOAT16_TYPE,
699 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
700 TI_COMPLEX_FLOAT32_TYPE,
701 TI_COMPLEX_FLOAT64_TYPE,
702 TI_COMPLEX_FLOAT128_TYPE,
703 TI_COMPLEX_FLOAT32X_TYPE,
704 TI_COMPLEX_FLOAT64X_TYPE,
705 TI_COMPLEX_FLOAT128X_TYPE,
707 TI_FLOAT_PTR_TYPE,
708 TI_DOUBLE_PTR_TYPE,
709 TI_LONG_DOUBLE_PTR_TYPE,
710 TI_INTEGER_PTR_TYPE,
712 TI_VOID_TYPE,
713 TI_PTR_TYPE,
714 TI_CONST_PTR_TYPE,
715 TI_SIZE_TYPE,
716 TI_PID_TYPE,
717 TI_PTRDIFF_TYPE,
718 TI_VA_LIST_TYPE,
719 TI_VA_LIST_GPR_COUNTER_FIELD,
720 TI_VA_LIST_FPR_COUNTER_FIELD,
721 TI_BOOLEAN_TYPE,
722 TI_FILEPTR_TYPE,
723 TI_CONST_TM_PTR_TYPE,
724 TI_FENV_T_PTR_TYPE,
725 TI_CONST_FENV_T_PTR_TYPE,
726 TI_FEXCEPT_T_PTR_TYPE,
727 TI_CONST_FEXCEPT_T_PTR_TYPE,
728 TI_POINTER_SIZED_TYPE,
730 TI_DFLOAT32_TYPE,
731 TI_DFLOAT64_TYPE,
732 TI_DFLOAT128_TYPE,
734 TI_VOID_LIST_NODE,
736 TI_MAIN_IDENTIFIER,
738 TI_SAT_SFRACT_TYPE,
739 TI_SAT_FRACT_TYPE,
740 TI_SAT_LFRACT_TYPE,
741 TI_SAT_LLFRACT_TYPE,
742 TI_SAT_USFRACT_TYPE,
743 TI_SAT_UFRACT_TYPE,
744 TI_SAT_ULFRACT_TYPE,
745 TI_SAT_ULLFRACT_TYPE,
746 TI_SFRACT_TYPE,
747 TI_FRACT_TYPE,
748 TI_LFRACT_TYPE,
749 TI_LLFRACT_TYPE,
750 TI_USFRACT_TYPE,
751 TI_UFRACT_TYPE,
752 TI_ULFRACT_TYPE,
753 TI_ULLFRACT_TYPE,
754 TI_SAT_SACCUM_TYPE,
755 TI_SAT_ACCUM_TYPE,
756 TI_SAT_LACCUM_TYPE,
757 TI_SAT_LLACCUM_TYPE,
758 TI_SAT_USACCUM_TYPE,
759 TI_SAT_UACCUM_TYPE,
760 TI_SAT_ULACCUM_TYPE,
761 TI_SAT_ULLACCUM_TYPE,
762 TI_SACCUM_TYPE,
763 TI_ACCUM_TYPE,
764 TI_LACCUM_TYPE,
765 TI_LLACCUM_TYPE,
766 TI_USACCUM_TYPE,
767 TI_UACCUM_TYPE,
768 TI_ULACCUM_TYPE,
769 TI_ULLACCUM_TYPE,
770 TI_QQ_TYPE,
771 TI_HQ_TYPE,
772 TI_SQ_TYPE,
773 TI_DQ_TYPE,
774 TI_TQ_TYPE,
775 TI_UQQ_TYPE,
776 TI_UHQ_TYPE,
777 TI_USQ_TYPE,
778 TI_UDQ_TYPE,
779 TI_UTQ_TYPE,
780 TI_SAT_QQ_TYPE,
781 TI_SAT_HQ_TYPE,
782 TI_SAT_SQ_TYPE,
783 TI_SAT_DQ_TYPE,
784 TI_SAT_TQ_TYPE,
785 TI_SAT_UQQ_TYPE,
786 TI_SAT_UHQ_TYPE,
787 TI_SAT_USQ_TYPE,
788 TI_SAT_UDQ_TYPE,
789 TI_SAT_UTQ_TYPE,
790 TI_HA_TYPE,
791 TI_SA_TYPE,
792 TI_DA_TYPE,
793 TI_TA_TYPE,
794 TI_UHA_TYPE,
795 TI_USA_TYPE,
796 TI_UDA_TYPE,
797 TI_UTA_TYPE,
798 TI_SAT_HA_TYPE,
799 TI_SAT_SA_TYPE,
800 TI_SAT_DA_TYPE,
801 TI_SAT_TA_TYPE,
802 TI_SAT_UHA_TYPE,
803 TI_SAT_USA_TYPE,
804 TI_SAT_UDA_TYPE,
805 TI_SAT_UTA_TYPE,
807 TI_MODULE_HWM,
808 /* Nodes below here change during compilation, and should therefore
809 not be in the C++ module's global tree table. */
811 TI_OPTIMIZATION_DEFAULT,
812 TI_OPTIMIZATION_CURRENT,
813 TI_TARGET_OPTION_DEFAULT,
814 TI_TARGET_OPTION_CURRENT,
815 TI_CURRENT_TARGET_PRAGMA,
816 TI_CURRENT_OPTIMIZE_PRAGMA,
818 TI_CHREC_DONT_KNOW,
819 TI_CHREC_KNOWN,
821 TI_MAX
824 /* An enumeration of the standard C integer types. These must be
825 ordered so that shorter types appear before longer ones, and so
826 that signed types appear before unsigned ones, for the correct
827 functioning of interpret_integer() in c-lex.cc. */
828 enum integer_type_kind {
829 itk_char,
830 itk_signed_char,
831 itk_unsigned_char,
832 itk_short,
833 itk_unsigned_short,
834 itk_int,
835 itk_unsigned_int,
836 itk_long,
837 itk_unsigned_long,
838 itk_long_long,
839 itk_unsigned_long_long,
841 itk_intN_0,
842 itk_unsigned_intN_0,
843 itk_intN_1,
844 itk_unsigned_intN_1,
845 itk_intN_2,
846 itk_unsigned_intN_2,
847 itk_intN_3,
848 itk_unsigned_intN_3,
850 itk_none
853 /* A pointer-to-function member type looks like:
855 struct {
856 __P __pfn;
857 ptrdiff_t __delta;
860 If __pfn is NULL, it is a NULL pointer-to-member-function.
862 (Because the vtable is always the first thing in the object, we
863 don't need its offset.) If the function is virtual, then PFN is
864 one plus twice the index into the vtable; otherwise, it is just a
865 pointer to the function.
867 Unfortunately, using the lowest bit of PFN doesn't work in
868 architectures that don't impose alignment requirements on function
869 addresses, or that use the lowest bit to tell one ISA from another,
870 for example. For such architectures, we use the lowest bit of
871 DELTA instead of the lowest bit of the PFN, and DELTA will be
872 multiplied by 2. */
873 enum ptrmemfunc_vbit_where_t {
874 ptrmemfunc_vbit_in_pfn,
875 ptrmemfunc_vbit_in_delta
878 /* Flags that may be passed in the third argument of decl_attributes, and
879 to handler functions for attributes. */
880 enum attribute_flags {
881 /* The type passed in is the type of a DECL, and any attributes that
882 should be passed in again to be applied to the DECL rather than the
883 type should be returned. */
884 ATTR_FLAG_DECL_NEXT = 1,
885 /* The type passed in is a function return type, and any attributes that
886 should be passed in again to be applied to the function type rather
887 than the return type should be returned. */
888 ATTR_FLAG_FUNCTION_NEXT = 2,
889 /* The type passed in is an array element type, and any attributes that
890 should be passed in again to be applied to the array type rather
891 than the element type should be returned. */
892 ATTR_FLAG_ARRAY_NEXT = 4,
893 /* The type passed in is a structure, union or enumeration type being
894 created, and should be modified in place. */
895 ATTR_FLAG_TYPE_IN_PLACE = 8,
896 /* The attributes are being applied by default to a library function whose
897 name indicates known behavior, and should be silently ignored if they
898 are not in fact compatible with the function type. */
899 ATTR_FLAG_BUILT_IN = 16,
900 /* A given attribute has been parsed as a C++-11 attribute. */
901 ATTR_FLAG_CXX11 = 32,
902 /* The attribute handler is being invoked with an internal argument
903 that may not otherwise be valid when specified in source code. */
904 ATTR_FLAG_INTERNAL = 64
907 /* Types used to represent sizes. */
908 enum size_type_kind {
909 stk_sizetype, /* Normal representation of sizes in bytes. */
910 stk_ssizetype, /* Signed representation of sizes in bytes. */
911 stk_bitsizetype, /* Normal representation of sizes in bits. */
912 stk_sbitsizetype, /* Signed representation of sizes in bits. */
913 stk_type_kind_last
916 /* Flags controlling operand_equal_p() behavior. */
917 enum operand_equal_flag {
918 OEP_ONLY_CONST = 1,
919 OEP_PURE_SAME = 2,
920 OEP_MATCH_SIDE_EFFECTS = 4,
921 OEP_ADDRESS_OF = 8,
922 /* Internal within operand_equal_p: */
923 OEP_NO_HASH_CHECK = 16,
924 /* Internal within inchash::add_expr: */
925 OEP_HASH_CHECK = 32,
926 /* Makes operand_equal_p handle more expressions: */
927 OEP_LEXICOGRAPHIC = 64,
928 OEP_BITWISE = 128,
929 /* For OEP_ADDRESS_OF of COMPONENT_REFs, only consider same fields as
930 equivalent rather than also different fields with the same offset. */
931 OEP_ADDRESS_OF_SAME_FIELD = 256,
932 /* In conjunction with OEP_LEXICOGRAPHIC considers names of declarations
933 of the same kind. Used to compare VLA bounds involving parameters
934 across redeclarations of the same function. */
935 OEP_DECL_NAME = 512
938 /* Enum and arrays used for tree allocation stats.
939 Keep in sync with tree.cc:tree_node_kind_names. */
940 enum tree_node_kind {
941 d_kind,
942 t_kind,
943 b_kind,
944 s_kind,
945 r_kind,
946 e_kind,
947 c_kind,
948 id_kind,
949 vec_kind,
950 binfo_kind,
951 ssa_name_kind,
952 constr_kind,
953 x_kind,
954 lang_decl,
955 lang_type,
956 omp_clause_kind,
957 all_kinds
960 enum annot_expr_kind {
961 annot_expr_ivdep_kind,
962 annot_expr_unroll_kind,
963 annot_expr_no_vector_kind,
964 annot_expr_vector_kind,
965 annot_expr_parallel_kind,
966 annot_expr_kind_last
969 /* The kind of a TREE_CLOBBER_P CONSTRUCTOR node. */
970 enum clobber_kind {
971 /* Unspecified, this clobber acts as a store of an undefined value. */
972 CLOBBER_UNDEF,
973 /* This clobber ends the lifetime of the storage. */
974 CLOBBER_EOL,
975 CLOBBER_LAST
978 /*---------------------------------------------------------------------------
979 Type definitions
980 ---------------------------------------------------------------------------*/
981 /* When processing aliases at the symbol table level, we need the
982 declaration of target. For this reason we need to queue aliases and
983 process them after all declarations has been produced. */
984 struct GTY(()) alias_pair {
985 tree decl;
986 tree target;
989 /* An initialization priority. */
990 typedef unsigned short priority_type;
992 /* The type of a callback function for walking over tree structure. */
993 typedef tree (*walk_tree_fn) (tree *, int *, void *);
995 /* The type of a callback function that represents a custom walk_tree. */
996 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
997 void *, hash_set<tree> *);
1000 /*---------------------------------------------------------------------------
1001 Main data structures
1002 ---------------------------------------------------------------------------*/
1003 /* A tree node can represent a data type, a variable, an expression
1004 or a statement. Each node has a TREE_CODE which says what kind of
1005 thing it represents. Some common codes are:
1006 INTEGER_TYPE -- represents a type of integers.
1007 ARRAY_TYPE -- represents a type of pointer.
1008 VAR_DECL -- represents a declared variable.
1009 INTEGER_CST -- represents a constant integer value.
1010 PLUS_EXPR -- represents a sum (an expression).
1012 As for the contents of a tree node: there are some fields
1013 that all nodes share. Each TREE_CODE has various special-purpose
1014 fields as well. The fields of a node are never accessed directly,
1015 always through accessor macros. */
1017 /* Every kind of tree node starts with this structure,
1018 so all nodes have these fields.
1020 See the accessor macros, defined below, for documentation of the
1021 fields, and the table below which connects the fields and the
1022 accessor macros. */
1024 struct GTY(()) tree_base {
1025 ENUM_BITFIELD(tree_code) code : 16;
1027 unsigned side_effects_flag : 1;
1028 unsigned constant_flag : 1;
1029 unsigned addressable_flag : 1;
1030 unsigned volatile_flag : 1;
1031 unsigned readonly_flag : 1;
1032 unsigned asm_written_flag: 1;
1033 unsigned nowarning_flag : 1;
1034 unsigned visited : 1;
1036 unsigned used_flag : 1;
1037 unsigned nothrow_flag : 1;
1038 unsigned static_flag : 1;
1039 unsigned public_flag : 1;
1040 unsigned private_flag : 1;
1041 unsigned protected_flag : 1;
1042 unsigned deprecated_flag : 1;
1043 unsigned default_def_flag : 1;
1045 union {
1046 /* The bits in the following structure should only be used with
1047 accessor macros that constrain inputs with tree checking. */
1048 struct {
1049 unsigned lang_flag_0 : 1;
1050 unsigned lang_flag_1 : 1;
1051 unsigned lang_flag_2 : 1;
1052 unsigned lang_flag_3 : 1;
1053 unsigned lang_flag_4 : 1;
1054 unsigned lang_flag_5 : 1;
1055 unsigned lang_flag_6 : 1;
1056 unsigned saturating_flag : 1;
1058 unsigned unsigned_flag : 1;
1059 unsigned packed_flag : 1;
1060 unsigned user_align : 1;
1061 unsigned nameless_flag : 1;
1062 unsigned atomic_flag : 1;
1063 unsigned unavailable_flag : 1;
1064 unsigned spare0 : 2;
1066 unsigned spare1 : 8;
1068 /* This field is only used with TREE_TYPE nodes; the only reason it is
1069 present in tree_base instead of tree_type is to save space. The size
1070 of the field must be large enough to hold addr_space_t values.
1071 For CONSTRUCTOR nodes this holds the clobber_kind enum. */
1072 unsigned address_space : 8;
1073 } bits;
1075 /* The following fields are present in tree_base to save space. The
1076 nodes using them do not require any of the flags above and so can
1077 make better use of the 4-byte sized word. */
1079 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
1080 struct {
1081 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1082 its native precision. */
1083 unsigned char unextended;
1085 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
1086 wider precisions based on its TYPE_SIGN. */
1087 unsigned char extended;
1089 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1090 offset_int precision, with smaller integers being extended
1091 according to their TYPE_SIGN. This is equal to one of the two
1092 fields above but is cached for speed. */
1093 unsigned char offset;
1094 } int_length;
1096 /* VEC length. This field is only used with TREE_VEC. */
1097 int length;
1099 /* This field is only used with VECTOR_CST. */
1100 struct {
1101 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
1102 unsigned int log2_npatterns : 8;
1104 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
1105 unsigned int nelts_per_pattern : 8;
1107 /* For future expansion. */
1108 unsigned int unused : 16;
1109 } vector_cst;
1111 /* SSA version number. This field is only used with SSA_NAME. */
1112 unsigned int version;
1114 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
1115 unsigned int chrec_var;
1117 /* Internal function code. */
1118 enum internal_fn ifn;
1120 /* OMP_ATOMIC* memory order. */
1121 enum omp_memory_order omp_atomic_memory_order;
1123 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
1124 expression trees and specify known data non-dependences. For
1125 two memory references in a function they are known to not
1126 alias if dependence_info.clique are equal and dependence_info.base
1127 are distinct. Clique number zero means there is no information,
1128 clique number one is populated from function global information
1129 and thus needs no remapping on transforms like loop unrolling. */
1130 struct {
1131 unsigned short clique;
1132 unsigned short base;
1133 } dependence_info;
1134 } GTY((skip(""))) u;
1137 /* The following table lists the uses of each of the above flags and
1138 for which types of nodes they are defined.
1140 addressable_flag:
1142 TREE_ADDRESSABLE in
1143 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1144 SSA_NAME
1145 all types
1146 CONSTRUCTOR, IDENTIFIER_NODE
1147 STMT_EXPR
1149 CALL_EXPR_TAILCALL in
1150 CALL_EXPR
1152 CASE_LOW_SEEN in
1153 CASE_LABEL_EXPR
1155 PREDICT_EXPR_OUTCOME in
1156 PREDICT_EXPR
1158 OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE in
1159 OMP_CLAUSE
1161 static_flag:
1163 TREE_STATIC in
1164 VAR_DECL, FUNCTION_DECL
1165 CONSTRUCTOR
1167 TREE_NO_TRAMPOLINE in
1168 ADDR_EXPR
1170 BINFO_VIRTUAL_P in
1171 TREE_BINFO
1173 TREE_SYMBOL_REFERENCED in
1174 IDENTIFIER_NODE
1176 CLEANUP_EH_ONLY in
1177 TARGET_EXPR, WITH_CLEANUP_EXPR
1179 TRY_CATCH_IS_CLEANUP in
1180 TRY_CATCH_EXPR
1182 ASM_INPUT_P in
1183 ASM_EXPR
1185 TYPE_REF_CAN_ALIAS_ALL in
1186 POINTER_TYPE, REFERENCE_TYPE
1188 CASE_HIGH_SEEN in
1189 CASE_LABEL_EXPR
1191 ENUM_IS_SCOPED in
1192 ENUMERAL_TYPE
1194 TRANSACTION_EXPR_OUTER in
1195 TRANSACTION_EXPR
1197 SSA_NAME_ANTI_RANGE_P in
1198 SSA_NAME
1200 MUST_TAIL_CALL in
1201 CALL_EXPR
1203 public_flag:
1205 TREE_OVERFLOW in
1206 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1208 TREE_PUBLIC in
1209 VAR_DECL, FUNCTION_DECL
1210 IDENTIFIER_NODE
1212 CONSTRUCTOR_NO_CLEARING in
1213 CONSTRUCTOR
1215 ASM_VOLATILE_P in
1216 ASM_EXPR
1218 CALL_EXPR_VA_ARG_PACK in
1219 CALL_EXPR
1221 TYPE_CACHED_VALUES_P in
1222 all types
1224 SAVE_EXPR_RESOLVED_P in
1225 SAVE_EXPR
1227 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1228 OMP_CLAUSE_LASTPRIVATE
1230 OMP_CLAUSE_PRIVATE_DEBUG in
1231 OMP_CLAUSE_PRIVATE
1233 OMP_CLAUSE_LINEAR_NO_COPYIN in
1234 OMP_CLAUSE_LINEAR
1236 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1237 OMP_CLAUSE_MAP
1239 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1240 OMP_CLAUSE_{,TASK_,IN_}REDUCTION
1242 OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in
1243 OMP_CLAUSE_USE_DEVICE_PTR
1245 TRANSACTION_EXPR_RELAXED in
1246 TRANSACTION_EXPR
1248 FALLTHROUGH_LABEL_P in
1249 LABEL_DECL
1251 SSA_NAME_IS_VIRTUAL_OPERAND in
1252 SSA_NAME
1254 EXPR_LOCATION_WRAPPER_P in
1255 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1257 private_flag:
1259 TREE_PRIVATE in
1260 all decls
1262 CALL_EXPR_RETURN_SLOT_OPT in
1263 CALL_EXPR
1265 OMP_SECTION_LAST in
1266 OMP_SECTION
1268 OMP_PARALLEL_COMBINED in
1269 OMP_PARALLEL
1271 OMP_CLAUSE_PRIVATE_OUTER_REF in
1272 OMP_CLAUSE_PRIVATE
1274 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1275 OMP_CLAUSE_LINEAR
1277 TYPE_REF_IS_RVALUE in
1278 REFERENCE_TYPE
1280 ENUM_IS_OPAQUE in
1281 ENUMERAL_TYPE
1283 protected_flag:
1285 TREE_PROTECTED in
1286 BLOCK
1287 all decls
1289 CALL_FROM_THUNK_P and
1290 CALL_ALLOCA_FOR_VAR_P and
1291 CALL_FROM_NEW_OR_DELETE_P in
1292 CALL_EXPR
1294 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1295 OMP_CLAUSE_LINEAR
1297 ASM_INLINE_P in
1298 ASM_EXPR
1300 side_effects_flag:
1302 TREE_SIDE_EFFECTS in
1303 all expressions
1304 all decls
1305 all constants
1307 FORCED_LABEL in
1308 LABEL_DECL
1310 volatile_flag:
1312 TREE_THIS_VOLATILE in
1313 all expressions
1314 all decls
1316 TYPE_VOLATILE in
1317 all types
1319 readonly_flag:
1321 TREE_READONLY in
1322 all expressions
1323 all decls
1325 TYPE_READONLY in
1326 all types
1328 constant_flag:
1330 TREE_CONSTANT in
1331 all expressions
1332 all decls
1333 all constants
1335 TYPE_SIZES_GIMPLIFIED in
1336 all types
1338 unsigned_flag:
1340 TYPE_UNSIGNED in
1341 all types
1343 DECL_UNSIGNED in
1344 all decls
1346 asm_written_flag:
1348 TREE_ASM_WRITTEN in
1349 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1350 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1351 BLOCK, STRING_CST
1353 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1354 SSA_NAME
1356 used_flag:
1358 TREE_USED in
1359 all expressions
1360 all decls
1361 IDENTIFIER_NODE
1363 nothrow_flag:
1365 TREE_NOTHROW in
1366 CALL_EXPR
1367 FUNCTION_DECL
1369 TREE_THIS_NOTRAP in
1370 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1372 SSA_NAME_IN_FREE_LIST in
1373 SSA_NAME
1375 DECL_NONALIASED in
1376 VAR_DECL
1378 deprecated_flag:
1380 TREE_DEPRECATED in
1381 all decls
1382 all types
1384 IDENTIFIER_TRANSPARENT_ALIAS in
1385 IDENTIFIER_NODE
1387 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1388 SSA_NAME
1390 unavailable_flag:
1392 TREE_UNAVAILABLE in
1393 all decls
1394 all types
1396 visited:
1398 TREE_VISITED in
1399 all trees (used liberally by many passes)
1401 saturating_flag:
1403 TYPE_REVERSE_STORAGE_ORDER in
1404 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1406 TYPE_SATURATING in
1407 other types
1409 VAR_DECL_IS_VIRTUAL_OPERAND in
1410 VAR_DECL
1412 nowarning_flag:
1414 TREE_NO_WARNING in
1415 all expressions
1416 all decls
1418 TYPE_ARTIFICIAL in
1419 all types
1421 default_def_flag:
1423 TYPE_FINAL_P in
1424 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1426 TYPE_VECTOR_OPAQUE in
1427 VECTOR_TYPE
1429 SSA_NAME_IS_DEFAULT_DEF in
1430 SSA_NAME
1432 DECL_NONLOCAL_FRAME in
1433 VAR_DECL
1435 REF_REVERSE_STORAGE_ORDER in
1436 BIT_FIELD_REF, MEM_REF
1438 FUNC_ADDR_BY_DESCRIPTOR in
1439 ADDR_EXPR
1441 CALL_EXPR_BY_DESCRIPTOR in
1442 CALL_EXPR
1446 struct GTY(()) tree_typed {
1447 struct tree_base base;
1448 tree type;
1451 struct GTY(()) tree_common {
1452 struct tree_typed typed;
1453 tree chain;
1456 struct GTY(()) tree_int_cst {
1457 struct tree_typed typed;
1458 HOST_WIDE_INT val[1];
1462 struct GTY(()) tree_real_cst {
1463 struct tree_typed typed;
1464 struct real_value value;
1467 struct GTY(()) tree_fixed_cst {
1468 struct tree_typed typed;
1469 struct fixed_value * fixed_cst_ptr;
1472 struct GTY(()) tree_string {
1473 struct tree_typed typed;
1474 int length;
1475 char str[1];
1478 struct GTY(()) tree_complex {
1479 struct tree_typed typed;
1480 tree real;
1481 tree imag;
1484 struct GTY(()) tree_vector {
1485 struct tree_typed typed;
1486 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1];
1489 struct GTY(()) tree_poly_int_cst {
1490 struct tree_typed typed;
1491 tree coeffs[NUM_POLY_INT_COEFFS];
1494 struct GTY(()) tree_identifier {
1495 struct tree_common common;
1496 struct ht_identifier id;
1499 struct GTY(()) tree_list {
1500 struct tree_common common;
1501 tree purpose;
1502 tree value;
1505 struct GTY(()) tree_vec {
1506 struct tree_common common;
1507 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1510 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1511 element. INDEX can optionally design the position of VALUE: in arrays,
1512 it is the index where VALUE has to be placed; in structures, it is the
1513 FIELD_DECL of the member. */
1514 struct GTY(()) constructor_elt {
1515 tree index;
1516 tree value;
1519 struct GTY(()) tree_constructor {
1520 struct tree_typed typed;
1521 vec<constructor_elt, va_gc> *elts;
1524 enum omp_clause_depend_kind
1526 OMP_CLAUSE_DEPEND_IN,
1527 OMP_CLAUSE_DEPEND_OUT,
1528 OMP_CLAUSE_DEPEND_INOUT,
1529 OMP_CLAUSE_DEPEND_MUTEXINOUTSET,
1530 OMP_CLAUSE_DEPEND_INOUTSET,
1531 OMP_CLAUSE_DEPEND_SOURCE,
1532 OMP_CLAUSE_DEPEND_SINK,
1533 OMP_CLAUSE_DEPEND_DEPOBJ,
1534 OMP_CLAUSE_DEPEND_LAST
1537 enum omp_clause_proc_bind_kind
1539 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1540 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1541 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1542 OMP_CLAUSE_PROC_BIND_PRIMARY = 2,
1543 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1544 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1545 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1546 OMP_CLAUSE_PROC_BIND_LAST
1549 enum omp_clause_device_type_kind
1551 OMP_CLAUSE_DEVICE_TYPE_HOST = 1,
1552 OMP_CLAUSE_DEVICE_TYPE_NOHOST = 2,
1553 OMP_CLAUSE_DEVICE_TYPE_ANY = 3
1556 enum omp_clause_linear_kind
1558 OMP_CLAUSE_LINEAR_DEFAULT,
1559 OMP_CLAUSE_LINEAR_REF,
1560 OMP_CLAUSE_LINEAR_VAL,
1561 OMP_CLAUSE_LINEAR_UVAL
1564 struct GTY(()) tree_exp {
1565 struct tree_typed typed;
1566 location_t locus;
1567 tree GTY ((length ("TREE_OPERAND_LENGTH ((tree)&%h)"))) operands[1];
1570 /* Immediate use linking structure. This structure is used for maintaining
1571 a doubly linked list of uses of an SSA_NAME. */
1572 struct GTY(()) ssa_use_operand_t {
1573 struct ssa_use_operand_t* GTY((skip(""))) prev;
1574 struct ssa_use_operand_t* GTY((skip(""))) next;
1575 /* Immediate uses for a given SSA name are maintained as a cyclic
1576 list. To recognize the root of this list, the location field
1577 needs to point to the original SSA name. Since statements and
1578 SSA names are of different data types, we need this union. See
1579 the explanation in struct imm_use_iterator. */
1580 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1581 tree *GTY((skip(""))) use;
1584 struct GTY(()) tree_ssa_name {
1585 struct tree_typed typed;
1587 /* _DECL wrapped by this SSA name. */
1588 tree var;
1590 /* Statement that defines this SSA name. */
1591 gimple *def_stmt;
1593 /* Value range information. */
1594 union ssa_name_info_type {
1595 /* Pointer attributes used for alias analysis. */
1596 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1597 /* Value range attributes used for zero/sign extension elimination. */
1598 struct GTY ((tag ("1"))) range_info_def *range_info;
1599 } GTY ((desc ("%1.typed.type ?" \
1600 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1602 /* Immediate uses list for this SSA_NAME. */
1603 struct ssa_use_operand_t imm_uses;
1606 struct GTY(()) phi_arg_d {
1607 /* imm_use MUST be the first element in struct because we do some
1608 pointer arithmetic with it. See phi_arg_index_from_use. */
1609 struct ssa_use_operand_t imm_use;
1610 tree def;
1611 location_t locus;
1614 struct GTY(()) tree_omp_clause {
1615 struct tree_common common;
1616 location_t locus;
1617 enum omp_clause_code code;
1618 union omp_clause_subcode {
1619 enum omp_clause_default_kind default_kind;
1620 enum omp_clause_schedule_kind schedule_kind;
1621 enum omp_clause_depend_kind depend_kind;
1622 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1623 unsigned int map_kind;
1624 enum omp_clause_proc_bind_kind proc_bind_kind;
1625 enum tree_code reduction_code;
1626 enum omp_clause_linear_kind linear_kind;
1627 enum tree_code if_modifier;
1628 enum omp_clause_defaultmap_kind defaultmap_kind;
1629 enum omp_clause_bind_kind bind_kind;
1630 enum omp_clause_device_type_kind device_type_kind;
1631 } GTY ((skip)) subcode;
1633 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1634 usage. */
1635 gimple_seq gimple_reduction_init;
1636 gimple_seq gimple_reduction_merge;
1638 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1639 ops[1];
1642 struct GTY(()) tree_block {
1643 struct tree_base base;
1644 tree chain;
1646 unsigned block_num;
1648 location_t locus;
1649 location_t end_locus;
1651 tree vars;
1652 vec<tree, va_gc> *nonlocalized_vars;
1654 tree subblocks;
1655 tree supercontext;
1656 tree abstract_origin;
1657 tree fragment_origin;
1658 tree fragment_chain;
1660 /* Pointer to the DWARF lexical block. */
1661 struct die_struct *die;
1664 struct GTY(()) tree_type_common {
1665 struct tree_common common;
1666 tree size;
1667 tree size_unit;
1668 tree attributes;
1669 unsigned int uid;
1671 unsigned int precision : 10;
1672 unsigned no_force_blk_flag : 1;
1673 unsigned needs_constructing_flag : 1;
1674 unsigned transparent_aggr_flag : 1;
1675 unsigned restrict_flag : 1;
1676 unsigned contains_placeholder_bits : 2;
1678 ENUM_BITFIELD(machine_mode) mode : 8;
1680 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE.
1681 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */
1682 unsigned string_flag : 1;
1683 unsigned lang_flag_0 : 1;
1684 unsigned lang_flag_1 : 1;
1685 unsigned lang_flag_2 : 1;
1686 unsigned lang_flag_3 : 1;
1687 unsigned lang_flag_4 : 1;
1688 unsigned lang_flag_5 : 1;
1689 unsigned lang_flag_6 : 1;
1690 unsigned lang_flag_7 : 1;
1692 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1693 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1694 the latter being usually the larger. For ELF it is 8<<28,
1695 so we need to store the value 32 (not 31, as we need the zero
1696 as well), hence six bits. */
1697 unsigned align : 6;
1698 unsigned warn_if_not_align : 6;
1699 unsigned typeless_storage : 1;
1700 unsigned empty_flag : 1;
1701 unsigned indivisible_p : 1;
1702 unsigned spare : 16;
1704 alias_set_type alias_set;
1705 tree pointer_to;
1706 tree reference_to;
1707 union tree_type_symtab {
1708 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1709 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1710 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1711 tree canonical;
1712 tree next_variant;
1713 tree main_variant;
1714 tree context;
1715 tree name;
1718 struct GTY(()) tree_type_with_lang_specific {
1719 struct tree_type_common common;
1720 /* Points to a structure whose details depend on the language in use. */
1721 struct lang_type *lang_specific;
1724 struct GTY(()) tree_type_non_common {
1725 struct tree_type_with_lang_specific with_lang_specific;
1726 tree values;
1727 tree minval;
1728 tree maxval;
1729 tree lang_1;
1732 struct GTY (()) tree_binfo {
1733 struct tree_common common;
1735 tree offset;
1736 tree vtable;
1737 tree virtuals;
1738 tree vptr_field;
1739 vec<tree, va_gc> *base_accesses;
1740 tree inheritance;
1742 tree vtt_subvtt;
1743 tree vtt_vptr;
1745 vec<tree, va_gc> base_binfos;
1748 struct GTY(()) tree_decl_minimal {
1749 struct tree_common common;
1750 location_t locus;
1751 unsigned int uid;
1752 tree name;
1753 tree context;
1756 struct GTY(()) tree_decl_common {
1757 struct tree_decl_minimal common;
1758 tree size;
1760 ENUM_BITFIELD(machine_mode) mode : 8;
1762 unsigned nonlocal_flag : 1;
1763 unsigned virtual_flag : 1;
1764 unsigned ignored_flag : 1;
1765 unsigned abstract_flag : 1;
1766 unsigned artificial_flag : 1;
1767 unsigned preserve_flag: 1;
1768 unsigned debug_expr_is_from : 1;
1770 unsigned lang_flag_0 : 1;
1771 unsigned lang_flag_1 : 1;
1772 unsigned lang_flag_2 : 1;
1773 unsigned lang_flag_3 : 1;
1774 unsigned lang_flag_4 : 1;
1775 unsigned lang_flag_5 : 1;
1776 unsigned lang_flag_6 : 1;
1777 unsigned lang_flag_7 : 1;
1778 unsigned lang_flag_8 : 1;
1780 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1781 In TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P.
1782 In FIELD_DECL, this is DECL_FIELD_ABI_IGNORED. */
1783 unsigned decl_flag_0 : 1;
1784 /* In FIELD_DECL, this is DECL_BIT_FIELD
1785 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1786 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1787 unsigned decl_flag_1 : 1;
1788 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1789 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1790 DECL_HAS_VALUE_EXPR_P. */
1791 unsigned decl_flag_2 : 1;
1792 /* In FIELD_DECL, this is DECL_PADDING_P. */
1793 unsigned decl_flag_3 : 1;
1794 /* Logically, these two would go in a theoretical base shared by var and
1795 parm decl. */
1796 unsigned not_gimple_reg_flag : 1;
1797 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1798 unsigned decl_by_reference_flag : 1;
1799 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1800 unsigned decl_read_flag : 1;
1801 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1802 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */
1803 unsigned decl_nonshareable_flag : 1;
1805 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1806 unsigned int off_align : 6;
1808 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1809 unsigned int align : 6;
1811 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1812 TYPE_WARN_IF_NOT_ALIGN. */
1813 unsigned int warn_if_not_align : 6;
1815 /* 14 bits unused. */
1817 /* UID for points-to sets, stable over copying from inlining. */
1818 unsigned int pt_uid;
1820 tree size_unit;
1821 tree initial;
1822 tree attributes;
1823 tree abstract_origin;
1825 /* Points to a structure whose details depend on the language in use. */
1826 struct lang_decl *lang_specific;
1829 struct GTY(()) tree_decl_with_rtl {
1830 struct tree_decl_common common;
1831 rtx rtl;
1834 struct GTY(()) tree_field_decl {
1835 struct tree_decl_common common;
1837 tree offset;
1838 tree bit_field_type;
1839 tree qualifier;
1840 tree bit_offset;
1841 tree fcontext;
1844 struct GTY(()) tree_label_decl {
1845 struct tree_decl_with_rtl common;
1846 int label_decl_uid;
1847 int eh_landing_pad_nr;
1850 struct GTY(()) tree_result_decl {
1851 struct tree_decl_with_rtl common;
1854 struct GTY(()) tree_const_decl {
1855 struct tree_decl_common common;
1858 struct GTY(()) tree_parm_decl {
1859 struct tree_decl_with_rtl common;
1860 rtx incoming_rtl;
1863 struct GTY(()) tree_decl_with_vis {
1864 struct tree_decl_with_rtl common;
1865 tree assembler_name;
1866 struct symtab_node *symtab_node;
1868 /* Belong to VAR_DECL exclusively. */
1869 unsigned defer_output : 1;
1870 unsigned hard_register : 1;
1871 unsigned common_flag : 1;
1872 unsigned in_text_section : 1;
1873 unsigned in_constant_pool : 1;
1874 unsigned dllimport_flag : 1;
1875 /* Don't belong to VAR_DECL exclusively. */
1876 unsigned weak_flag : 1;
1878 unsigned seen_in_bind_expr : 1;
1879 unsigned comdat_flag : 1;
1880 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1881 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1882 unsigned visibility_specified : 1;
1884 /* Belong to FUNCTION_DECL exclusively. */
1885 unsigned init_priority_p : 1;
1886 /* Used by C++ only. Might become a generic decl flag. */
1887 unsigned shadowed_for_var_p : 1;
1888 /* Belong to FUNCTION_DECL exclusively. */
1889 unsigned cxx_constructor : 1;
1890 /* Belong to FUNCTION_DECL exclusively. */
1891 unsigned cxx_destructor : 1;
1892 /* Belong to FUNCTION_DECL exclusively. */
1893 unsigned final : 1;
1894 /* Belong to FUNCTION_DECL exclusively. */
1895 unsigned regdecl_flag : 1;
1896 /* 14 unused bits. */
1897 /* 32 more unused on 64 bit HW. */
1900 struct GTY(()) tree_var_decl {
1901 struct tree_decl_with_vis common;
1904 struct GTY(()) tree_decl_non_common {
1905 struct tree_decl_with_vis common;
1906 /* Almost all FE's use this. */
1907 tree result;
1910 /* Classify a special function declaration type. */
1912 enum function_decl_type
1914 NONE,
1915 OPERATOR_NEW,
1916 OPERATOR_DELETE,
1917 LAMBDA_FUNCTION
1919 /* 0 values left */
1922 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1923 arguments/result/saved_tree fields by front ends. It was either inherit
1924 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1925 which seemed a bit strange. */
1927 struct GTY(()) tree_function_decl {
1928 struct tree_decl_non_common common;
1930 struct function *f;
1932 /* Arguments of the function. */
1933 tree arguments;
1934 /* The personality function. Used for stack unwinding. */
1935 tree personality;
1937 /* Function specific options that are used by this function. */
1938 tree function_specific_target; /* target options */
1939 tree function_specific_optimization; /* optimization options */
1941 /* Generic function body. */
1942 tree saved_tree;
1943 /* Index within a virtual table. */
1944 tree vindex;
1946 /* In a FUNCTION_DECL this is DECL_UNCHECKED_FUNCTION_CODE. */
1947 unsigned int function_code;
1949 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1950 unsigned static_ctor_flag : 1;
1951 unsigned static_dtor_flag : 1;
1952 unsigned uninlinable : 1;
1953 unsigned possibly_inlined : 1;
1954 unsigned novops_flag : 1;
1955 unsigned returns_twice_flag : 1;
1957 unsigned malloc_flag : 1;
1958 unsigned declared_inline_flag : 1;
1959 unsigned no_inline_warning_flag : 1;
1960 unsigned no_instrument_function_entry_exit : 1;
1961 unsigned no_limit_stack : 1;
1962 unsigned disregard_inline_limits : 1;
1963 unsigned pure_flag : 1;
1964 unsigned looping_const_or_pure_flag : 1;
1966 /* Align the bitfield to boundary of a byte. */
1967 ENUM_BITFIELD(function_decl_type) decl_type: 2;
1968 unsigned has_debug_args_flag : 1;
1969 unsigned versioned_function : 1;
1970 unsigned replaceable_operator : 1;
1972 /* 11 bits left for future expansion. */
1973 /* 32 bits on 64-bit HW. */
1976 struct GTY(()) tree_translation_unit_decl {
1977 struct tree_decl_common common;
1978 /* Source language of this translation unit. Used for DWARF output. */
1979 const char *language;
1980 /* TODO: Non-optimization used to build this translation unit. */
1981 /* TODO: Root of a partial DWARF tree for global types and decls. */
1984 struct GTY(()) tree_type_decl {
1985 struct tree_decl_non_common common;
1989 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1991 struct tree_statement_list_node *prev;
1992 struct tree_statement_list_node *next;
1993 tree stmt;
1996 struct GTY(()) tree_statement_list
1998 struct tree_typed typed;
1999 struct tree_statement_list_node *head;
2000 struct tree_statement_list_node *tail;
2004 /* Optimization options used by a function. */
2006 struct GTY(()) tree_optimization_option {
2007 struct tree_base base;
2009 /* The optimization options used by the user. */
2010 struct cl_optimization *opts;
2012 /* Target optabs for this set of optimization options. This is of
2013 type `struct target_optabs *'. */
2014 void *GTY ((atomic)) optabs;
2016 /* The value of this_target_optabs against which the optabs above were
2017 generated. */
2018 struct target_optabs *GTY ((skip)) base_optabs;
2021 /* Forward declaration, defined in target-globals.h. */
2023 class GTY(()) target_globals;
2025 /* Target options used by a function. */
2027 struct GTY(()) tree_target_option {
2028 struct tree_base base;
2030 /* Target globals for the corresponding target option. */
2031 class target_globals *globals;
2033 /* The optimization options used by the user. */
2034 struct cl_target_option *opts;
2037 /* Define the overall contents of a tree node.
2038 It may be any of the structures declared above
2039 for various types of node. */
2040 union GTY ((ptr_alias (union lang_tree_node),
2041 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
2042 struct tree_base GTY ((tag ("TS_BASE"))) base;
2043 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
2044 struct tree_common GTY ((tag ("TS_COMMON"))) common;
2045 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
2046 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst;
2047 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
2048 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
2049 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
2050 struct tree_string GTY ((tag ("TS_STRING"))) string;
2051 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
2052 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
2053 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
2054 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
2055 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
2056 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
2057 decl_non_common;
2058 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
2059 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
2060 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
2061 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
2062 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
2063 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
2064 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
2065 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
2066 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
2067 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
2068 translation_unit_decl;
2069 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
2070 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
2071 type_with_lang_specific;
2072 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
2073 type_non_common;
2074 struct tree_list GTY ((tag ("TS_LIST"))) list;
2075 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
2076 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
2077 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
2078 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
2079 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
2080 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
2081 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
2082 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
2083 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
2084 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
2087 /* Structure describing an attribute and a function to handle it. */
2088 struct attribute_spec {
2089 /* The name of the attribute (without any leading or trailing __),
2090 or NULL to mark the end of a table of attributes. */
2091 const char *name;
2092 /* The minimum length of the list of arguments of the attribute. */
2093 int min_length;
2094 /* The maximum length of the list of arguments of the attribute
2095 (-1 for no maximum). It can also be -2 for fake attributes
2096 created for the sake of -Wno-attributes; in that case, we
2097 should skip the balanced token sequence when parsing the attribute. */
2098 int max_length;
2099 /* Whether this attribute requires a DECL. If it does, it will be passed
2100 from types of DECLs, function return types and array element types to
2101 the DECLs, function types and array types respectively; but when
2102 applied to a type in any other circumstances, it will be ignored with
2103 a warning. (If greater control is desired for a given attribute,
2104 this should be false, and the flags argument to the handler may be
2105 used to gain greater control in that case.) */
2106 bool decl_required;
2107 /* Whether this attribute requires a type. If it does, it will be passed
2108 from a DECL to the type of that DECL. */
2109 bool type_required;
2110 /* Whether this attribute requires a function (or method) type. If it does,
2111 it will be passed from a function pointer type to the target type,
2112 and from a function return type (which is not itself a function
2113 pointer type) to the function type. */
2114 bool function_type_required;
2115 /* Specifies if attribute affects type's identity. */
2116 bool affects_type_identity;
2117 /* Function to handle this attribute. NODE points to a tree[3] array,
2118 where node[0] is the node to which the attribute is to be applied;
2119 node[1] is the last pushed/merged declaration if one exists, and node[2]
2120 may be the declaration for node[0]. If a DECL, it should be modified in
2121 place; if a TYPE, a copy should be created. NAME is the canonicalized
2122 name of the attribute i.e. without any leading or trailing underscores.
2123 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
2124 further information about the context of the attribute. Afterwards, the
2125 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
2126 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
2127 error, as well as in any other cases when the attributes should not be
2128 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
2129 applied to another type or DECL later may be returned;
2130 otherwise the return value should be NULL_TREE. This pointer may be
2131 NULL if no special handling is required beyond the checks implied
2132 by the rest of this structure. */
2133 tree (*handler) (tree *node, tree name, tree args,
2134 int flags, bool *no_add_attrs);
2136 /* Specifies the name of an attribute that's mutually exclusive with
2137 this one, and whether the relationship applies to the function,
2138 variable, or type form of the attribute. */
2139 struct exclusions {
2140 const char *name;
2141 bool function;
2142 bool variable;
2143 bool type;
2146 /* An array of attribute exclusions describing names of other attributes
2147 that this attribute is mutually exclusive with. */
2148 const exclusions *exclude;
2151 /* These functions allow a front-end to perform a manual layout of a
2152 RECORD_TYPE. (For instance, if the placement of subsequent fields
2153 depends on the placement of fields so far.) Begin by calling
2154 start_record_layout. Then, call place_field for each of the
2155 fields. Then, call finish_record_layout. See layout_type for the
2156 default way in which these functions are used. */
2157 typedef struct record_layout_info_s {
2158 /* The RECORD_TYPE that we are laying out. */
2159 tree t;
2160 /* The offset into the record so far, in bytes, not including bits in
2161 BITPOS. */
2162 tree offset;
2163 /* The last known alignment of SIZE. */
2164 unsigned int offset_align;
2165 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
2166 tree bitpos;
2167 /* The alignment of the record so far, in bits. */
2168 unsigned int record_align;
2169 /* The alignment of the record so far, ignoring #pragma pack and
2170 __attribute__ ((packed)), in bits. */
2171 unsigned int unpacked_align;
2172 /* The previous field laid out. */
2173 tree prev_field;
2174 /* The static variables (i.e., class variables, as opposed to
2175 instance variables) encountered in T. */
2176 vec<tree, va_gc> *pending_statics;
2177 /* Bits remaining in the current alignment group */
2178 int remaining_in_alignment;
2179 /* True if we've seen a packed field that didn't have normal
2180 alignment anyway. */
2181 int packed_maybe_necessary;
2182 } *record_layout_info;
2184 /* Iterator for going through the function arguments. */
2185 struct function_args_iterator {
2186 tree next; /* TREE_LIST pointing to the next argument */
2189 /* Structures to map from a tree to another tree. */
2190 struct GTY(()) tree_map_base {
2191 tree from;
2194 /* Map from a tree to another tree. */
2196 struct GTY((for_user)) tree_map {
2197 struct tree_map_base base;
2198 unsigned int hash;
2199 tree to;
2202 /* Map from a decl tree to another tree. */
2203 struct GTY((for_user)) tree_decl_map {
2204 struct tree_map_base base;
2205 tree to;
2208 /* Map from a tree to an int. */
2209 struct GTY((for_user)) tree_int_map {
2210 struct tree_map_base base;
2211 unsigned int to;
2214 /* Map from a decl tree to a tree vector. */
2215 struct GTY((for_user)) tree_vec_map {
2216 struct tree_map_base base;
2217 vec<tree, va_gc> *to;
2220 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2221 have to go towards the end of tree.h so that union tree_node is fully
2222 defined by this point. */
2224 /* Structure containing iterator state. */
2225 struct call_expr_arg_iterator {
2226 tree t; /* the call_expr */
2227 int n; /* argument count */
2228 int i; /* next argument index */
2231 struct const_call_expr_arg_iterator {
2232 const_tree t; /* the call_expr */
2233 int n; /* argument count */
2234 int i; /* next argument index */
2237 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2238 function, and flags. */
2239 struct GTY(()) builtin_info_type {
2240 tree decl;
2241 /* Whether the user can use <xxx> instead of explicitly using calls
2242 to __builtin_<xxx>. */
2243 unsigned implicit_p : 1;
2244 /* Whether the user has provided a declaration of <xxx>. */
2245 unsigned declared_p : 1;
2248 /* Information about a _FloatN or _FloatNx type that may be
2249 supported. */
2250 struct floatn_type_info {
2251 /* The number N in the type name. */
2252 int n;
2253 /* Whether it is an extended type _FloatNx (true) or an interchange
2254 type (false). */
2255 bool extended;
2259 /*---------------------------------------------------------------------------
2260 Global variables
2261 ---------------------------------------------------------------------------*/
2262 /* Matrix describing the structures contained in a given tree code. */
2263 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2265 /* Class of tree given its code. */
2266 extern const enum tree_code_class tree_code_type[];
2268 /* Each tree code class has an associated string representation.
2269 These must correspond to the tree_code_class entries. */
2270 extern const char *const tree_code_class_strings[];
2272 /* Number of argument-words in each kind of tree-node. */
2273 extern const unsigned char tree_code_length[];
2275 /* Vector of all alias pairs for global symbols. */
2276 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2278 /* Names of all the built_in classes. */
2279 extern const char *const built_in_class_names[BUILT_IN_LAST];
2281 /* Names of all the built_in functions. */
2282 extern const char * built_in_names[(int) END_BUILTINS];
2284 /* Number of operands and names for each OMP_CLAUSE node. */
2285 extern unsigned const char omp_clause_num_ops[];
2286 extern const char * const omp_clause_code_name[];
2287 extern const char *user_omp_clause_code_name (tree, bool);
2289 /* A vector of all translation-units. */
2290 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2292 /* Vector of standard trees used by the C compiler. */
2293 extern GTY(()) tree global_trees[TI_MAX];
2295 /* The standard C integer types. Use integer_type_kind to index into
2296 this array. */
2297 extern GTY(()) tree integer_types[itk_none];
2299 /* Types used to represent sizes. */
2300 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2302 /* Arrays for keeping track of tree node statistics. */
2303 extern uint64_t tree_node_counts[];
2304 extern uint64_t tree_node_sizes[];
2306 /* True if we are in gimple form and the actions of the folders need to
2307 be restricted. False if we are not in gimple form and folding is not
2308 restricted to creating gimple expressions. */
2309 extern bool in_gimple_form;
2311 /* Functional interface to the builtin functions. */
2312 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2314 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2315 extern unsigned int maximum_field_alignment;
2317 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2318 extern GTY(()) tree current_function_decl;
2320 /* Nonzero means a FUNC_BEGIN label was emitted. */
2321 extern GTY(()) const char * current_function_func_begin_label;
2323 /* Information about the _FloatN and _FloatNx types. */
2324 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2326 #endif // GCC_TREE_CORE_H