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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) 1989-2021 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 /* Nonzero if the argument itself does not escape but memory
114 referenced by it can escape. */
115 #define EAF_NODIRECTESCAPE (1 << 4)
117 /* Call return flags. */
118 /* Mask for the argument number that is returned. Lower two bits of
119 the return flags, encodes argument slots zero to three. */
120 #define ERF_RETURN_ARG_MASK (3)
122 /* Nonzero if the return value is equal to the argument number
123 flags & ERF_RETURN_ARG_MASK. */
124 #define ERF_RETURNS_ARG (1 << 2)
126 /* Nonzero if the return value does not alias with anything. Functions
127 with the malloc attribute have this set on their return value. */
128 #define ERF_NOALIAS (1 << 3)
131 /*---------------------------------------------------------------------------
132 Enumerations
133 ---------------------------------------------------------------------------*/
134 /* Codes of tree nodes. */
135 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
136 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
138 enum tree_code {
139 #include "all-tree.def"
140 MAX_TREE_CODES
143 #undef DEFTREECODE
144 #undef END_OF_BASE_TREE_CODES
146 /* Number of language-independent tree codes. */
147 #define NUM_TREE_CODES \
148 ((int) LAST_AND_UNUSED_TREE_CODE)
150 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
151 (tree_contains_struct[(CODE)][(STRUCT)])
154 /* Classify which part of the compiler has defined a given builtin function.
155 Note that we assume below that this is no more than two bits. */
156 enum built_in_class {
157 NOT_BUILT_IN = 0,
158 BUILT_IN_FRONTEND,
159 BUILT_IN_MD,
160 BUILT_IN_NORMAL
163 /* Last marker used for LTO stremaing of built_in_class. We cannot add it
164 to the enum since we need the enumb to fit in 2 bits. */
165 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
167 /* Codes that identify the various built in functions
168 so that expand_call can identify them quickly. */
169 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
170 enum built_in_function {
171 #include "builtins.def"
172 /* Complex division routines in libgcc. These are done via builtins
173 because emit_library_call_value can't handle complex values. */
174 BUILT_IN_COMPLEX_MUL_MIN,
175 BUILT_IN_COMPLEX_MUL_MAX
176 = BUILT_IN_COMPLEX_MUL_MIN
177 + MAX_MODE_COMPLEX_FLOAT
178 - MIN_MODE_COMPLEX_FLOAT,
180 BUILT_IN_COMPLEX_DIV_MIN,
181 BUILT_IN_COMPLEX_DIV_MAX
182 = BUILT_IN_COMPLEX_DIV_MIN
183 + MAX_MODE_COMPLEX_FLOAT
184 - MIN_MODE_COMPLEX_FLOAT,
186 /* Upper bound on non-language-specific builtins. */
187 END_BUILTINS
190 /* Internal functions. */
191 enum internal_fn {
192 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
193 #include "internal-fn.def"
194 IFN_LAST
197 /* An enum that combines target-independent built-in functions with
198 internal functions, so that they can be treated in a similar way.
199 The numbers for built-in functions are the same as for the
200 built_in_function enum. The numbers for internal functions
201 start at END_BUITLINS. */
202 enum combined_fn {
203 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
204 CFN_##ENUM = int (ENUM),
205 #include "builtins.def"
208 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
209 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
210 #include "internal-fn.def"
212 CFN_LAST
215 /* Tree code classes. Each tree_code has an associated code class
216 represented by a TREE_CODE_CLASS. */
217 enum tree_code_class {
218 tcc_exceptional, /* An exceptional code (fits no category). */
219 tcc_constant, /* A constant. */
220 /* Order of tcc_type and tcc_declaration is important. */
221 tcc_type, /* A type object code. */
222 tcc_declaration, /* A declaration (also serving as variable refs). */
223 tcc_reference, /* A reference to storage. */
224 tcc_comparison, /* A comparison expression. */
225 tcc_unary, /* A unary arithmetic expression. */
226 tcc_binary, /* A binary arithmetic expression. */
227 tcc_statement, /* A statement expression, which have side effects
228 but usually no interesting value. */
229 tcc_vl_exp, /* A function call or other expression with a
230 variable-length operand vector. */
231 tcc_expression /* Any other expression. */
234 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
235 the tables omp_clause_num_ops and omp_clause_code_name. */
236 enum omp_clause_code {
237 /* Clause zero is special-cased inside the parser
238 (c_parser_omp_variable_list). */
239 OMP_CLAUSE_ERROR = 0,
241 /* OpenACC/OpenMP clause: private (variable_list). */
242 OMP_CLAUSE_PRIVATE,
244 /* OpenMP clause: shared (variable_list). */
245 OMP_CLAUSE_SHARED,
247 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
248 OMP_CLAUSE_FIRSTPRIVATE,
250 /* OpenMP clause: lastprivate (variable_list). */
251 OMP_CLAUSE_LASTPRIVATE,
253 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
254 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
255 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
256 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
257 into the shared one.
258 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
259 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
260 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
261 VAR_DECL placeholder, used like the above for C/C++ array
262 reductions. */
263 OMP_CLAUSE_REDUCTION,
265 /* OpenMP clause: task_reduction (operator:variable_list). */
266 OMP_CLAUSE_TASK_REDUCTION,
268 /* OpenMP clause: in_reduction (operator:variable_list). */
269 OMP_CLAUSE_IN_REDUCTION,
271 /* OpenMP clause: copyin (variable_list). */
272 OMP_CLAUSE_COPYIN,
274 /* OpenMP clause: copyprivate (variable_list). */
275 OMP_CLAUSE_COPYPRIVATE,
277 /* OpenMP clause: linear (variable-list[:linear-step]). */
278 OMP_CLAUSE_LINEAR,
280 /* OpenMP clause: affinity([depend-modifier :] variable-list). */
281 OMP_CLAUSE_AFFINITY,
283 /* OpenMP clause: aligned (variable-list[:alignment]). */
284 OMP_CLAUSE_ALIGNED,
286 /* OpenMP clause: allocate ([allocator:]variable-list). */
287 OMP_CLAUSE_ALLOCATE,
289 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
290 OMP_CLAUSE_DEPEND,
292 /* OpenMP clause: nontemporal (variable-list). */
293 OMP_CLAUSE_NONTEMPORAL,
295 /* OpenMP clause: uniform (argument-list). */
296 OMP_CLAUSE_UNIFORM,
298 /* OpenMP clause: to (extended-list).
299 Only when it appears in declare target. */
300 OMP_CLAUSE_TO_DECLARE,
302 /* OpenMP clause: link (variable-list). */
303 OMP_CLAUSE_LINK,
305 /* OpenMP clause: detach (event-handle). */
306 OMP_CLAUSE_DETACH,
308 /* OpenACC clause: use_device (variable-list).
309 OpenMP clause: use_device_ptr (ptr-list). */
310 OMP_CLAUSE_USE_DEVICE_PTR,
312 /* OpenMP clause: use_device_addr (variable-list). */
313 OMP_CLAUSE_USE_DEVICE_ADDR,
315 /* OpenMP clause: is_device_ptr (variable-list). */
316 OMP_CLAUSE_IS_DEVICE_PTR,
318 /* OpenMP clause: inclusive (variable-list). */
319 OMP_CLAUSE_INCLUSIVE,
321 /* OpenMP clause: exclusive (variable-list). */
322 OMP_CLAUSE_EXCLUSIVE,
324 /* OpenMP clause: from (variable-list). */
325 OMP_CLAUSE_FROM,
327 /* OpenMP clause: to (variable-list). */
328 OMP_CLAUSE_TO,
330 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
331 device, host (self), present, present_or_copy (pcopy), present_or_copyin
332 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
333 (variable-list).
335 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
336 OMP_CLAUSE_MAP,
338 /* Internal structure to hold OpenACC cache directive's variable-list.
339 #pragma acc cache (variable-list). */
340 OMP_CLAUSE__CACHE_,
342 /* OpenACC clause: gang [(gang-argument-list)].
343 Where
344 gang-argument-list: [gang-argument-list, ] gang-argument
345 gang-argument: [num:] integer-expression
346 | static: size-expression
347 size-expression: * | integer-expression. */
348 OMP_CLAUSE_GANG,
350 /* OpenACC clause: async [(integer-expression)]. */
351 OMP_CLAUSE_ASYNC,
353 /* OpenACC clause: wait [(integer-expression-list)]. */
354 OMP_CLAUSE_WAIT,
356 /* OpenACC clause: auto. */
357 OMP_CLAUSE_AUTO,
359 /* OpenACC clause: seq. */
360 OMP_CLAUSE_SEQ,
362 /* Internal clause: temporary for combined loops expansion. */
363 OMP_CLAUSE__LOOPTEMP_,
365 /* Internal clause: temporary for task reductions. */
366 OMP_CLAUSE__REDUCTEMP_,
368 /* Internal clause: temporary for lastprivate(conditional:). */
369 OMP_CLAUSE__CONDTEMP_,
371 /* Internal clause: temporary for inscan reductions. */
372 OMP_CLAUSE__SCANTEMP_,
374 /* OpenACC/OpenMP clause: if (scalar-expression). */
375 OMP_CLAUSE_IF,
377 /* OpenMP clause: num_threads (integer-expression). */
378 OMP_CLAUSE_NUM_THREADS,
380 /* OpenMP clause: schedule. */
381 OMP_CLAUSE_SCHEDULE,
383 /* OpenMP clause: nowait. */
384 OMP_CLAUSE_NOWAIT,
386 /* OpenMP clause: ordered [(constant-integer-expression)]. */
387 OMP_CLAUSE_ORDERED,
389 /* OpenACC/OpenMP clause: default. */
390 OMP_CLAUSE_DEFAULT,
392 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
393 OMP_CLAUSE_COLLAPSE,
395 /* OpenMP clause: untied. */
396 OMP_CLAUSE_UNTIED,
398 /* OpenMP clause: final (scalar-expression). */
399 OMP_CLAUSE_FINAL,
401 /* OpenMP clause: mergeable. */
402 OMP_CLAUSE_MERGEABLE,
404 /* OpenMP clause: device (integer-expression). */
405 OMP_CLAUSE_DEVICE,
407 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
408 OMP_CLAUSE_DIST_SCHEDULE,
410 /* OpenMP clause: inbranch. */
411 OMP_CLAUSE_INBRANCH,
413 /* OpenMP clause: notinbranch. */
414 OMP_CLAUSE_NOTINBRANCH,
416 /* OpenMP clause: num_teams(integer-expression). */
417 OMP_CLAUSE_NUM_TEAMS,
419 /* OpenMP clause: thread_limit(integer-expression). */
420 OMP_CLAUSE_THREAD_LIMIT,
422 /* OpenMP clause: proc_bind ({master,close,spread}). */
423 OMP_CLAUSE_PROC_BIND,
425 /* OpenMP clause: safelen (constant-integer-expression). */
426 OMP_CLAUSE_SAFELEN,
428 /* OpenMP clause: simdlen (constant-integer-expression). */
429 OMP_CLAUSE_SIMDLEN,
431 /* OpenMP clause: device_type ({host,nohost,any}). */
432 OMP_CLAUSE_DEVICE_TYPE,
434 /* OpenMP clause: for. */
435 OMP_CLAUSE_FOR,
437 /* OpenMP clause: parallel. */
438 OMP_CLAUSE_PARALLEL,
440 /* OpenMP clause: sections. */
441 OMP_CLAUSE_SECTIONS,
443 /* OpenMP clause: taskgroup. */
444 OMP_CLAUSE_TASKGROUP,
446 /* OpenMP clause: priority (integer-expression). */
447 OMP_CLAUSE_PRIORITY,
449 /* OpenMP clause: grainsize (integer-expression). */
450 OMP_CLAUSE_GRAINSIZE,
452 /* OpenMP clause: num_tasks (integer-expression). */
453 OMP_CLAUSE_NUM_TASKS,
455 /* OpenMP clause: nogroup. */
456 OMP_CLAUSE_NOGROUP,
458 /* OpenMP clause: threads. */
459 OMP_CLAUSE_THREADS,
461 /* OpenMP clause: simd. */
462 OMP_CLAUSE_SIMD,
464 /* OpenMP clause: hint (integer-expression). */
465 OMP_CLAUSE_HINT,
467 /* OpenMP clause: defaultmap (tofrom: scalar). */
468 OMP_CLAUSE_DEFAULTMAP,
470 /* OpenMP clause: order (concurrent). */
471 OMP_CLAUSE_ORDER,
473 /* OpenMP clause: bind (binding). */
474 OMP_CLAUSE_BIND,
476 /* Internally used only clause, holding SIMD uid. */
477 OMP_CLAUSE__SIMDUID_,
479 /* Internally used only clause, flag whether this is SIMT simd
480 loop or not. */
481 OMP_CLAUSE__SIMT_,
483 /* OpenACC clause: independent. */
484 OMP_CLAUSE_INDEPENDENT,
486 /* OpenACC clause: worker [( [num:] integer-expression)]. */
487 OMP_CLAUSE_WORKER,
489 /* OpenACC clause: vector [( [length:] integer-expression)]. */
490 OMP_CLAUSE_VECTOR,
492 /* OpenACC clause: num_gangs (integer-expression). */
493 OMP_CLAUSE_NUM_GANGS,
495 /* OpenACC clause: num_workers (integer-expression). */
496 OMP_CLAUSE_NUM_WORKERS,
498 /* OpenACC clause: vector_length (integer-expression). */
499 OMP_CLAUSE_VECTOR_LENGTH,
501 /* OpenACC clause: tile ( size-expr-list ). */
502 OMP_CLAUSE_TILE,
504 /* OpenACC clause: if_present. */
505 OMP_CLAUSE_IF_PRESENT,
507 /* OpenACC clause: finalize. */
508 OMP_CLAUSE_FINALIZE
511 #undef DEFTREESTRUCT
512 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
513 enum tree_node_structure_enum {
514 #include "treestruct.def"
515 LAST_TS_ENUM
517 #undef DEFTREESTRUCT
519 enum omp_clause_schedule_kind {
520 OMP_CLAUSE_SCHEDULE_STATIC,
521 OMP_CLAUSE_SCHEDULE_DYNAMIC,
522 OMP_CLAUSE_SCHEDULE_GUIDED,
523 OMP_CLAUSE_SCHEDULE_AUTO,
524 OMP_CLAUSE_SCHEDULE_RUNTIME,
525 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
526 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
527 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
528 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
531 enum omp_clause_default_kind {
532 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
533 OMP_CLAUSE_DEFAULT_SHARED,
534 OMP_CLAUSE_DEFAULT_NONE,
535 OMP_CLAUSE_DEFAULT_PRIVATE,
536 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
537 OMP_CLAUSE_DEFAULT_PRESENT,
538 OMP_CLAUSE_DEFAULT_LAST
541 enum omp_clause_defaultmap_kind {
542 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED,
543 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR,
544 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE,
545 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE,
546 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER,
547 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK = 7,
548 OMP_CLAUSE_DEFAULTMAP_ALLOC = 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
549 OMP_CLAUSE_DEFAULTMAP_TO = 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
550 OMP_CLAUSE_DEFAULTMAP_FROM = 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
551 OMP_CLAUSE_DEFAULTMAP_TOFROM = 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
552 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE
553 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
554 OMP_CLAUSE_DEFAULTMAP_NONE = 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
555 OMP_CLAUSE_DEFAULTMAP_DEFAULT
556 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
557 OMP_CLAUSE_DEFAULTMAP_MASK = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1)
560 enum omp_clause_bind_kind {
561 OMP_CLAUSE_BIND_TEAMS,
562 OMP_CLAUSE_BIND_PARALLEL,
563 OMP_CLAUSE_BIND_THREAD
566 /* memory-order-clause on OpenMP atomic/flush constructs or
567 argument of atomic_default_mem_order clause. */
568 enum omp_memory_order {
569 OMP_MEMORY_ORDER_UNSPECIFIED,
570 OMP_MEMORY_ORDER_RELAXED,
571 OMP_MEMORY_ORDER_ACQUIRE,
572 OMP_MEMORY_ORDER_RELEASE,
573 OMP_MEMORY_ORDER_ACQ_REL,
574 OMP_MEMORY_ORDER_SEQ_CST
577 /* There is a TYPE_QUAL value for each type qualifier. They can be
578 combined by bitwise-or to form the complete set of qualifiers for a
579 type. */
580 enum cv_qualifier {
581 TYPE_UNQUALIFIED = 0x0,
582 TYPE_QUAL_CONST = 0x1,
583 TYPE_QUAL_VOLATILE = 0x2,
584 TYPE_QUAL_RESTRICT = 0x4,
585 TYPE_QUAL_ATOMIC = 0x8
588 /* Standard named or nameless data types of the C compiler. */
589 enum tree_index {
590 TI_ERROR_MARK,
591 TI_INTQI_TYPE,
592 TI_INTHI_TYPE,
593 TI_INTSI_TYPE,
594 TI_INTDI_TYPE,
595 TI_INTTI_TYPE,
597 TI_UINTQI_TYPE,
598 TI_UINTHI_TYPE,
599 TI_UINTSI_TYPE,
600 TI_UINTDI_TYPE,
601 TI_UINTTI_TYPE,
603 TI_ATOMICQI_TYPE,
604 TI_ATOMICHI_TYPE,
605 TI_ATOMICSI_TYPE,
606 TI_ATOMICDI_TYPE,
607 TI_ATOMICTI_TYPE,
609 TI_UINT16_TYPE,
610 TI_UINT32_TYPE,
611 TI_UINT64_TYPE,
612 TI_UINT128_TYPE,
614 TI_VOID,
616 TI_INTEGER_ZERO,
617 TI_INTEGER_ONE,
618 TI_INTEGER_THREE,
619 TI_INTEGER_MINUS_ONE,
620 TI_NULL_POINTER,
622 TI_SIZE_ZERO,
623 TI_SIZE_ONE,
625 TI_BITSIZE_ZERO,
626 TI_BITSIZE_ONE,
627 TI_BITSIZE_UNIT,
629 TI_PUBLIC,
630 TI_PROTECTED,
631 TI_PRIVATE,
633 TI_BOOLEAN_FALSE,
634 TI_BOOLEAN_TRUE,
636 TI_FLOAT_TYPE,
637 TI_DOUBLE_TYPE,
638 TI_LONG_DOUBLE_TYPE,
640 /* The _FloatN and _FloatNx types must be consecutive, and in the
641 same sequence as the corresponding complex types, which must also
642 be consecutive; _FloatN must come before _FloatNx; the order must
643 also be the same as in the floatn_nx_types array and the RID_*
644 values in c-common.h. This is so that iterations over these
645 types work as intended. */
646 TI_FLOAT16_TYPE,
647 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
648 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
649 TI_FLOAT32_TYPE,
650 TI_FLOAT64_TYPE,
651 TI_FLOAT128_TYPE,
652 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
653 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
654 TI_FLOAT32X_TYPE,
655 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
656 TI_FLOAT64X_TYPE,
657 TI_FLOAT128X_TYPE,
658 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
659 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
660 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
661 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
662 - TI_FLOATN_NX_TYPE_FIRST \
663 + 1)
665 /* Put the complex types after their component types, so that in (sequential)
666 tree streaming we can assert that their component types have already been
667 handled (see tree-streamer.c:record_common_node). */
668 TI_COMPLEX_INTEGER_TYPE,
669 TI_COMPLEX_FLOAT_TYPE,
670 TI_COMPLEX_DOUBLE_TYPE,
671 TI_COMPLEX_LONG_DOUBLE_TYPE,
673 TI_COMPLEX_FLOAT16_TYPE,
674 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
675 TI_COMPLEX_FLOAT32_TYPE,
676 TI_COMPLEX_FLOAT64_TYPE,
677 TI_COMPLEX_FLOAT128_TYPE,
678 TI_COMPLEX_FLOAT32X_TYPE,
679 TI_COMPLEX_FLOAT64X_TYPE,
680 TI_COMPLEX_FLOAT128X_TYPE,
682 TI_FLOAT_PTR_TYPE,
683 TI_DOUBLE_PTR_TYPE,
684 TI_LONG_DOUBLE_PTR_TYPE,
685 TI_INTEGER_PTR_TYPE,
687 TI_VOID_TYPE,
688 TI_PTR_TYPE,
689 TI_CONST_PTR_TYPE,
690 TI_SIZE_TYPE,
691 TI_PID_TYPE,
692 TI_PTRDIFF_TYPE,
693 TI_VA_LIST_TYPE,
694 TI_VA_LIST_GPR_COUNTER_FIELD,
695 TI_VA_LIST_FPR_COUNTER_FIELD,
696 TI_BOOLEAN_TYPE,
697 TI_FILEPTR_TYPE,
698 TI_CONST_TM_PTR_TYPE,
699 TI_FENV_T_PTR_TYPE,
700 TI_CONST_FENV_T_PTR_TYPE,
701 TI_FEXCEPT_T_PTR_TYPE,
702 TI_CONST_FEXCEPT_T_PTR_TYPE,
703 TI_POINTER_SIZED_TYPE,
705 TI_DFLOAT32_TYPE,
706 TI_DFLOAT64_TYPE,
707 TI_DFLOAT128_TYPE,
709 TI_VOID_LIST_NODE,
711 TI_MAIN_IDENTIFIER,
713 TI_SAT_SFRACT_TYPE,
714 TI_SAT_FRACT_TYPE,
715 TI_SAT_LFRACT_TYPE,
716 TI_SAT_LLFRACT_TYPE,
717 TI_SAT_USFRACT_TYPE,
718 TI_SAT_UFRACT_TYPE,
719 TI_SAT_ULFRACT_TYPE,
720 TI_SAT_ULLFRACT_TYPE,
721 TI_SFRACT_TYPE,
722 TI_FRACT_TYPE,
723 TI_LFRACT_TYPE,
724 TI_LLFRACT_TYPE,
725 TI_USFRACT_TYPE,
726 TI_UFRACT_TYPE,
727 TI_ULFRACT_TYPE,
728 TI_ULLFRACT_TYPE,
729 TI_SAT_SACCUM_TYPE,
730 TI_SAT_ACCUM_TYPE,
731 TI_SAT_LACCUM_TYPE,
732 TI_SAT_LLACCUM_TYPE,
733 TI_SAT_USACCUM_TYPE,
734 TI_SAT_UACCUM_TYPE,
735 TI_SAT_ULACCUM_TYPE,
736 TI_SAT_ULLACCUM_TYPE,
737 TI_SACCUM_TYPE,
738 TI_ACCUM_TYPE,
739 TI_LACCUM_TYPE,
740 TI_LLACCUM_TYPE,
741 TI_USACCUM_TYPE,
742 TI_UACCUM_TYPE,
743 TI_ULACCUM_TYPE,
744 TI_ULLACCUM_TYPE,
745 TI_QQ_TYPE,
746 TI_HQ_TYPE,
747 TI_SQ_TYPE,
748 TI_DQ_TYPE,
749 TI_TQ_TYPE,
750 TI_UQQ_TYPE,
751 TI_UHQ_TYPE,
752 TI_USQ_TYPE,
753 TI_UDQ_TYPE,
754 TI_UTQ_TYPE,
755 TI_SAT_QQ_TYPE,
756 TI_SAT_HQ_TYPE,
757 TI_SAT_SQ_TYPE,
758 TI_SAT_DQ_TYPE,
759 TI_SAT_TQ_TYPE,
760 TI_SAT_UQQ_TYPE,
761 TI_SAT_UHQ_TYPE,
762 TI_SAT_USQ_TYPE,
763 TI_SAT_UDQ_TYPE,
764 TI_SAT_UTQ_TYPE,
765 TI_HA_TYPE,
766 TI_SA_TYPE,
767 TI_DA_TYPE,
768 TI_TA_TYPE,
769 TI_UHA_TYPE,
770 TI_USA_TYPE,
771 TI_UDA_TYPE,
772 TI_UTA_TYPE,
773 TI_SAT_HA_TYPE,
774 TI_SAT_SA_TYPE,
775 TI_SAT_DA_TYPE,
776 TI_SAT_TA_TYPE,
777 TI_SAT_UHA_TYPE,
778 TI_SAT_USA_TYPE,
779 TI_SAT_UDA_TYPE,
780 TI_SAT_UTA_TYPE,
782 TI_MODULE_HWM,
783 /* Nodes below here change during compilation, and should therefore
784 not be in the C++ module's global tree table. */
786 TI_OPTIMIZATION_DEFAULT,
787 TI_OPTIMIZATION_CURRENT,
788 TI_TARGET_OPTION_DEFAULT,
789 TI_TARGET_OPTION_CURRENT,
790 TI_CURRENT_TARGET_PRAGMA,
791 TI_CURRENT_OPTIMIZE_PRAGMA,
793 TI_CHREC_DONT_KNOW,
794 TI_CHREC_KNOWN,
796 TI_MAX
799 /* An enumeration of the standard C integer types. These must be
800 ordered so that shorter types appear before longer ones, and so
801 that signed types appear before unsigned ones, for the correct
802 functioning of interpret_integer() in c-lex.c. */
803 enum integer_type_kind {
804 itk_char,
805 itk_signed_char,
806 itk_unsigned_char,
807 itk_short,
808 itk_unsigned_short,
809 itk_int,
810 itk_unsigned_int,
811 itk_long,
812 itk_unsigned_long,
813 itk_long_long,
814 itk_unsigned_long_long,
816 itk_intN_0,
817 itk_unsigned_intN_0,
818 itk_intN_1,
819 itk_unsigned_intN_1,
820 itk_intN_2,
821 itk_unsigned_intN_2,
822 itk_intN_3,
823 itk_unsigned_intN_3,
825 itk_none
828 /* A pointer-to-function member type looks like:
830 struct {
831 __P __pfn;
832 ptrdiff_t __delta;
835 If __pfn is NULL, it is a NULL pointer-to-member-function.
837 (Because the vtable is always the first thing in the object, we
838 don't need its offset.) If the function is virtual, then PFN is
839 one plus twice the index into the vtable; otherwise, it is just a
840 pointer to the function.
842 Unfortunately, using the lowest bit of PFN doesn't work in
843 architectures that don't impose alignment requirements on function
844 addresses, or that use the lowest bit to tell one ISA from another,
845 for example. For such architectures, we use the lowest bit of
846 DELTA instead of the lowest bit of the PFN, and DELTA will be
847 multiplied by 2. */
848 enum ptrmemfunc_vbit_where_t {
849 ptrmemfunc_vbit_in_pfn,
850 ptrmemfunc_vbit_in_delta
853 /* Flags that may be passed in the third argument of decl_attributes, and
854 to handler functions for attributes. */
855 enum attribute_flags {
856 /* The type passed in is the type of a DECL, and any attributes that
857 should be passed in again to be applied to the DECL rather than the
858 type should be returned. */
859 ATTR_FLAG_DECL_NEXT = 1,
860 /* The type passed in is a function return type, and any attributes that
861 should be passed in again to be applied to the function type rather
862 than the return type should be returned. */
863 ATTR_FLAG_FUNCTION_NEXT = 2,
864 /* The type passed in is an array element type, and any attributes that
865 should be passed in again to be applied to the array type rather
866 than the element type should be returned. */
867 ATTR_FLAG_ARRAY_NEXT = 4,
868 /* The type passed in is a structure, union or enumeration type being
869 created, and should be modified in place. */
870 ATTR_FLAG_TYPE_IN_PLACE = 8,
871 /* The attributes are being applied by default to a library function whose
872 name indicates known behavior, and should be silently ignored if they
873 are not in fact compatible with the function type. */
874 ATTR_FLAG_BUILT_IN = 16,
875 /* A given attribute has been parsed as a C++-11 attribute. */
876 ATTR_FLAG_CXX11 = 32,
877 /* The attribute handler is being invoked with an internal argument
878 that may not otherwise be valid when specified in source code. */
879 ATTR_FLAG_INTERNAL = 64
882 /* Types used to represent sizes. */
883 enum size_type_kind {
884 stk_sizetype, /* Normal representation of sizes in bytes. */
885 stk_ssizetype, /* Signed representation of sizes in bytes. */
886 stk_bitsizetype, /* Normal representation of sizes in bits. */
887 stk_sbitsizetype, /* Signed representation of sizes in bits. */
888 stk_type_kind_last
891 enum operand_equal_flag {
892 OEP_ONLY_CONST = 1,
893 OEP_PURE_SAME = 2,
894 OEP_MATCH_SIDE_EFFECTS = 4,
895 OEP_ADDRESS_OF = 8,
896 /* Internal within operand_equal_p: */
897 OEP_NO_HASH_CHECK = 16,
898 /* Internal within inchash::add_expr: */
899 OEP_HASH_CHECK = 32,
900 /* Makes operand_equal_p handle more expressions: */
901 OEP_LEXICOGRAPHIC = 64,
902 OEP_BITWISE = 128,
903 /* For OEP_ADDRESS_OF of COMPONENT_REFs, only consider same fields as
904 equivalent rather than also different fields with the same offset. */
905 OEP_ADDRESS_OF_SAME_FIELD = 256
908 /* Enum and arrays used for tree allocation stats.
909 Keep in sync with tree.c:tree_node_kind_names. */
910 enum tree_node_kind {
911 d_kind,
912 t_kind,
913 b_kind,
914 s_kind,
915 r_kind,
916 e_kind,
917 c_kind,
918 id_kind,
919 vec_kind,
920 binfo_kind,
921 ssa_name_kind,
922 constr_kind,
923 x_kind,
924 lang_decl,
925 lang_type,
926 omp_clause_kind,
927 all_kinds
930 enum annot_expr_kind {
931 annot_expr_ivdep_kind,
932 annot_expr_unroll_kind,
933 annot_expr_no_vector_kind,
934 annot_expr_vector_kind,
935 annot_expr_parallel_kind,
936 annot_expr_kind_last
939 /*---------------------------------------------------------------------------
940 Type definitions
941 ---------------------------------------------------------------------------*/
942 /* When processing aliases at the symbol table level, we need the
943 declaration of target. For this reason we need to queue aliases and
944 process them after all declarations has been produced. */
945 struct GTY(()) alias_pair {
946 tree decl;
947 tree target;
950 /* An initialization priority. */
951 typedef unsigned short priority_type;
953 /* The type of a callback function for walking over tree structure. */
954 typedef tree (*walk_tree_fn) (tree *, int *, void *);
956 /* The type of a callback function that represents a custom walk_tree. */
957 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
958 void *, hash_set<tree> *);
961 /*---------------------------------------------------------------------------
962 Main data structures
963 ---------------------------------------------------------------------------*/
964 /* A tree node can represent a data type, a variable, an expression
965 or a statement. Each node has a TREE_CODE which says what kind of
966 thing it represents. Some common codes are:
967 INTEGER_TYPE -- represents a type of integers.
968 ARRAY_TYPE -- represents a type of pointer.
969 VAR_DECL -- represents a declared variable.
970 INTEGER_CST -- represents a constant integer value.
971 PLUS_EXPR -- represents a sum (an expression).
973 As for the contents of a tree node: there are some fields
974 that all nodes share. Each TREE_CODE has various special-purpose
975 fields as well. The fields of a node are never accessed directly,
976 always through accessor macros. */
978 /* Every kind of tree node starts with this structure,
979 so all nodes have these fields.
981 See the accessor macros, defined below, for documentation of the
982 fields, and the table below which connects the fields and the
983 accessor macros. */
985 struct GTY(()) tree_base {
986 ENUM_BITFIELD(tree_code) code : 16;
988 unsigned side_effects_flag : 1;
989 unsigned constant_flag : 1;
990 unsigned addressable_flag : 1;
991 unsigned volatile_flag : 1;
992 unsigned readonly_flag : 1;
993 unsigned asm_written_flag: 1;
994 unsigned nowarning_flag : 1;
995 unsigned visited : 1;
997 unsigned used_flag : 1;
998 unsigned nothrow_flag : 1;
999 unsigned static_flag : 1;
1000 unsigned public_flag : 1;
1001 unsigned private_flag : 1;
1002 unsigned protected_flag : 1;
1003 unsigned deprecated_flag : 1;
1004 unsigned default_def_flag : 1;
1006 union {
1007 /* The bits in the following structure should only be used with
1008 accessor macros that constrain inputs with tree checking. */
1009 struct {
1010 unsigned lang_flag_0 : 1;
1011 unsigned lang_flag_1 : 1;
1012 unsigned lang_flag_2 : 1;
1013 unsigned lang_flag_3 : 1;
1014 unsigned lang_flag_4 : 1;
1015 unsigned lang_flag_5 : 1;
1016 unsigned lang_flag_6 : 1;
1017 unsigned saturating_flag : 1;
1019 unsigned unsigned_flag : 1;
1020 unsigned packed_flag : 1;
1021 unsigned user_align : 1;
1022 unsigned nameless_flag : 1;
1023 unsigned atomic_flag : 1;
1024 unsigned spare0 : 3;
1026 unsigned spare1 : 8;
1028 /* This field is only used with TREE_TYPE nodes; the only reason it is
1029 present in tree_base instead of tree_type is to save space. The size
1030 of the field must be large enough to hold addr_space_t values. */
1031 unsigned address_space : 8;
1032 } bits;
1034 /* The following fields are present in tree_base to save space. The
1035 nodes using them do not require any of the flags above and so can
1036 make better use of the 4-byte sized word. */
1038 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
1039 struct {
1040 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1041 its native precision. */
1042 unsigned char unextended;
1044 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
1045 wider precisions based on its TYPE_SIGN. */
1046 unsigned char extended;
1048 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1049 offset_int precision, with smaller integers being extended
1050 according to their TYPE_SIGN. This is equal to one of the two
1051 fields above but is cached for speed. */
1052 unsigned char offset;
1053 } int_length;
1055 /* VEC length. This field is only used with TREE_VEC. */
1056 int length;
1058 /* This field is only used with VECTOR_CST. */
1059 struct {
1060 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
1061 unsigned int log2_npatterns : 8;
1063 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
1064 unsigned int nelts_per_pattern : 8;
1066 /* For future expansion. */
1067 unsigned int unused : 16;
1068 } vector_cst;
1070 /* SSA version number. This field is only used with SSA_NAME. */
1071 unsigned int version;
1073 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
1074 unsigned int chrec_var;
1076 /* Internal function code. */
1077 enum internal_fn ifn;
1079 /* OMP_ATOMIC* memory order. */
1080 enum omp_memory_order omp_atomic_memory_order;
1082 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
1083 expression trees and specify known data non-dependences. For
1084 two memory references in a function they are known to not
1085 alias if dependence_info.clique are equal and dependence_info.base
1086 are distinct. Clique number zero means there is no information,
1087 clique number one is populated from function global information
1088 and thus needs no remapping on transforms like loop unrolling. */
1089 struct {
1090 unsigned short clique;
1091 unsigned short base;
1092 } dependence_info;
1093 } GTY((skip(""))) u;
1096 /* The following table lists the uses of each of the above flags and
1097 for which types of nodes they are defined.
1099 addressable_flag:
1101 TREE_ADDRESSABLE in
1102 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1103 SSA_NAME
1104 all types
1105 CONSTRUCTOR, IDENTIFIER_NODE
1106 STMT_EXPR
1108 CALL_EXPR_TAILCALL in
1109 CALL_EXPR
1111 CASE_LOW_SEEN in
1112 CASE_LABEL_EXPR
1114 PREDICT_EXPR_OUTCOME in
1115 PREDICT_EXPR
1117 static_flag:
1119 TREE_STATIC in
1120 VAR_DECL, FUNCTION_DECL
1121 CONSTRUCTOR
1123 TREE_NO_TRAMPOLINE in
1124 ADDR_EXPR
1126 BINFO_VIRTUAL_P in
1127 TREE_BINFO
1129 TREE_SYMBOL_REFERENCED in
1130 IDENTIFIER_NODE
1132 CLEANUP_EH_ONLY in
1133 TARGET_EXPR, WITH_CLEANUP_EXPR
1135 TRY_CATCH_IS_CLEANUP in
1136 TRY_CATCH_EXPR
1138 ASM_INPUT_P in
1139 ASM_EXPR
1141 TYPE_REF_CAN_ALIAS_ALL in
1142 POINTER_TYPE, REFERENCE_TYPE
1144 CASE_HIGH_SEEN in
1145 CASE_LABEL_EXPR
1147 ENUM_IS_SCOPED in
1148 ENUMERAL_TYPE
1150 TRANSACTION_EXPR_OUTER in
1151 TRANSACTION_EXPR
1153 SSA_NAME_ANTI_RANGE_P in
1154 SSA_NAME
1156 MUST_TAIL_CALL in
1157 CALL_EXPR
1159 public_flag:
1161 TREE_OVERFLOW in
1162 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1164 TREE_PUBLIC in
1165 VAR_DECL, FUNCTION_DECL
1166 IDENTIFIER_NODE
1168 CONSTRUCTOR_NO_CLEARING in
1169 CONSTRUCTOR
1171 ASM_VOLATILE_P in
1172 ASM_EXPR
1174 CALL_EXPR_VA_ARG_PACK in
1175 CALL_EXPR
1177 TYPE_CACHED_VALUES_P in
1178 all types
1180 SAVE_EXPR_RESOLVED_P in
1181 SAVE_EXPR
1183 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1184 OMP_CLAUSE_LASTPRIVATE
1186 OMP_CLAUSE_PRIVATE_DEBUG in
1187 OMP_CLAUSE_PRIVATE
1189 OMP_CLAUSE_LINEAR_NO_COPYIN in
1190 OMP_CLAUSE_LINEAR
1192 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1193 OMP_CLAUSE_MAP
1195 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1196 OMP_CLAUSE_{,TASK_,IN_}REDUCTION
1198 OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in
1199 OMP_CLAUSE_USE_DEVICE_PTR
1201 TRANSACTION_EXPR_RELAXED in
1202 TRANSACTION_EXPR
1204 FALLTHROUGH_LABEL_P in
1205 LABEL_DECL
1207 SSA_NAME_IS_VIRTUAL_OPERAND in
1208 SSA_NAME
1210 EXPR_LOCATION_WRAPPER_P in
1211 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1213 private_flag:
1215 TREE_PRIVATE in
1216 all decls
1218 CALL_EXPR_RETURN_SLOT_OPT in
1219 CALL_EXPR
1221 OMP_SECTION_LAST in
1222 OMP_SECTION
1224 OMP_PARALLEL_COMBINED in
1225 OMP_PARALLEL
1227 OMP_CLAUSE_PRIVATE_OUTER_REF in
1228 OMP_CLAUSE_PRIVATE
1230 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1231 OMP_CLAUSE_LINEAR
1233 TYPE_REF_IS_RVALUE in
1234 REFERENCE_TYPE
1236 ENUM_IS_OPAQUE in
1237 ENUMERAL_TYPE
1239 protected_flag:
1241 TREE_PROTECTED in
1242 BLOCK
1243 all decls
1245 CALL_FROM_THUNK_P and
1246 CALL_ALLOCA_FOR_VAR_P and
1247 CALL_FROM_NEW_OR_DELETE_P in
1248 CALL_EXPR
1250 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1251 OMP_CLAUSE_LINEAR
1253 ASM_INLINE_P in
1254 ASM_EXPR
1256 side_effects_flag:
1258 TREE_SIDE_EFFECTS in
1259 all expressions
1260 all decls
1261 all constants
1263 FORCED_LABEL in
1264 LABEL_DECL
1266 volatile_flag:
1268 TREE_THIS_VOLATILE in
1269 all expressions
1270 all decls
1272 TYPE_VOLATILE in
1273 all types
1275 readonly_flag:
1277 TREE_READONLY in
1278 all expressions
1279 all decls
1281 TYPE_READONLY in
1282 all types
1284 constant_flag:
1286 TREE_CONSTANT in
1287 all expressions
1288 all decls
1289 all constants
1291 TYPE_SIZES_GIMPLIFIED in
1292 all types
1294 unsigned_flag:
1296 TYPE_UNSIGNED in
1297 all types
1299 DECL_UNSIGNED in
1300 all decls
1302 asm_written_flag:
1304 TREE_ASM_WRITTEN in
1305 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1306 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1307 BLOCK, STRING_CST
1309 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1310 SSA_NAME
1312 used_flag:
1314 TREE_USED in
1315 all expressions
1316 all decls
1317 IDENTIFIER_NODE
1319 nothrow_flag:
1321 TREE_NOTHROW in
1322 CALL_EXPR
1323 FUNCTION_DECL
1325 TREE_THIS_NOTRAP in
1326 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1328 SSA_NAME_IN_FREE_LIST in
1329 SSA_NAME
1331 DECL_NONALIASED in
1332 VAR_DECL
1334 deprecated_flag:
1336 TREE_DEPRECATED in
1337 all decls
1338 all types
1340 IDENTIFIER_TRANSPARENT_ALIAS in
1341 IDENTIFIER_NODE
1343 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1344 SSA_NAME
1346 visited:
1348 TREE_VISITED in
1349 all trees (used liberally by many passes)
1351 saturating_flag:
1353 TYPE_REVERSE_STORAGE_ORDER in
1354 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1356 TYPE_SATURATING in
1357 other types
1359 VAR_DECL_IS_VIRTUAL_OPERAND in
1360 VAR_DECL
1362 nowarning_flag:
1364 TREE_NO_WARNING in
1365 all expressions
1366 all decls
1368 TYPE_ARTIFICIAL in
1369 all types
1371 default_def_flag:
1373 TYPE_FINAL_P in
1374 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1376 TYPE_VECTOR_OPAQUE in
1377 VECTOR_TYPE
1379 SSA_NAME_IS_DEFAULT_DEF in
1380 SSA_NAME
1382 DECL_NONLOCAL_FRAME in
1383 VAR_DECL
1385 REF_REVERSE_STORAGE_ORDER in
1386 BIT_FIELD_REF, MEM_REF
1388 FUNC_ADDR_BY_DESCRIPTOR in
1389 ADDR_EXPR
1391 CALL_EXPR_BY_DESCRIPTOR in
1392 CALL_EXPR
1395 struct GTY(()) tree_typed {
1396 struct tree_base base;
1397 tree type;
1400 struct GTY(()) tree_common {
1401 struct tree_typed typed;
1402 tree chain;
1405 struct GTY(()) tree_int_cst {
1406 struct tree_typed typed;
1407 HOST_WIDE_INT val[1];
1411 struct GTY(()) tree_real_cst {
1412 struct tree_typed typed;
1413 struct real_value * real_cst_ptr;
1416 struct GTY(()) tree_fixed_cst {
1417 struct tree_typed typed;
1418 struct fixed_value * fixed_cst_ptr;
1421 struct GTY(()) tree_string {
1422 struct tree_typed typed;
1423 int length;
1424 char str[1];
1427 struct GTY(()) tree_complex {
1428 struct tree_typed typed;
1429 tree real;
1430 tree imag;
1433 struct GTY(()) tree_vector {
1434 struct tree_typed typed;
1435 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1];
1438 struct GTY(()) tree_poly_int_cst {
1439 struct tree_typed typed;
1440 tree coeffs[NUM_POLY_INT_COEFFS];
1443 struct GTY(()) tree_identifier {
1444 struct tree_common common;
1445 struct ht_identifier id;
1448 struct GTY(()) tree_list {
1449 struct tree_common common;
1450 tree purpose;
1451 tree value;
1454 struct GTY(()) tree_vec {
1455 struct tree_common common;
1456 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1459 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1460 element. INDEX can optionally design the position of VALUE: in arrays,
1461 it is the index where VALUE has to be placed; in structures, it is the
1462 FIELD_DECL of the member. */
1463 struct GTY(()) constructor_elt {
1464 tree index;
1465 tree value;
1468 struct GTY(()) tree_constructor {
1469 struct tree_typed typed;
1470 vec<constructor_elt, va_gc> *elts;
1473 enum omp_clause_depend_kind
1475 OMP_CLAUSE_DEPEND_IN,
1476 OMP_CLAUSE_DEPEND_OUT,
1477 OMP_CLAUSE_DEPEND_INOUT,
1478 OMP_CLAUSE_DEPEND_MUTEXINOUTSET,
1479 OMP_CLAUSE_DEPEND_SOURCE,
1480 OMP_CLAUSE_DEPEND_SINK,
1481 OMP_CLAUSE_DEPEND_DEPOBJ,
1482 OMP_CLAUSE_DEPEND_LAST
1485 enum omp_clause_proc_bind_kind
1487 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1488 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1489 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1490 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1491 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1492 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1493 OMP_CLAUSE_PROC_BIND_LAST
1496 enum omp_clause_device_type_kind
1498 OMP_CLAUSE_DEVICE_TYPE_HOST = 1,
1499 OMP_CLAUSE_DEVICE_TYPE_NOHOST = 2,
1500 OMP_CLAUSE_DEVICE_TYPE_ANY = 3
1503 enum omp_clause_linear_kind
1505 OMP_CLAUSE_LINEAR_DEFAULT,
1506 OMP_CLAUSE_LINEAR_REF,
1507 OMP_CLAUSE_LINEAR_VAL,
1508 OMP_CLAUSE_LINEAR_UVAL
1511 struct GTY(()) tree_exp {
1512 struct tree_typed typed;
1513 location_t locus;
1514 tree GTY ((special ("tree_exp"),
1515 desc ("TREE_CODE ((tree) &%0)")))
1516 operands[1];
1519 /* Immediate use linking structure. This structure is used for maintaining
1520 a doubly linked list of uses of an SSA_NAME. */
1521 struct GTY(()) ssa_use_operand_t {
1522 struct ssa_use_operand_t* GTY((skip(""))) prev;
1523 struct ssa_use_operand_t* GTY((skip(""))) next;
1524 /* Immediate uses for a given SSA name are maintained as a cyclic
1525 list. To recognize the root of this list, the location field
1526 needs to point to the original SSA name. Since statements and
1527 SSA names are of different data types, we need this union. See
1528 the explanation in struct imm_use_iterator. */
1529 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1530 tree *GTY((skip(""))) use;
1533 struct GTY(()) tree_ssa_name {
1534 struct tree_typed typed;
1536 /* _DECL wrapped by this SSA name. */
1537 tree var;
1539 /* Statement that defines this SSA name. */
1540 gimple *def_stmt;
1542 /* Value range information. */
1543 union ssa_name_info_type {
1544 /* Pointer attributes used for alias analysis. */
1545 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1546 /* Value range attributes used for zero/sign extension elimination. */
1547 struct GTY ((tag ("1"))) range_info_def *range_info;
1548 } GTY ((desc ("%1.typed.type ?" \
1549 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1551 /* Immediate uses list for this SSA_NAME. */
1552 struct ssa_use_operand_t imm_uses;
1555 struct GTY(()) phi_arg_d {
1556 /* imm_use MUST be the first element in struct because we do some
1557 pointer arithmetic with it. See phi_arg_index_from_use. */
1558 struct ssa_use_operand_t imm_use;
1559 tree def;
1560 location_t locus;
1563 struct GTY(()) tree_omp_clause {
1564 struct tree_common common;
1565 location_t locus;
1566 enum omp_clause_code code;
1567 union omp_clause_subcode {
1568 enum omp_clause_default_kind default_kind;
1569 enum omp_clause_schedule_kind schedule_kind;
1570 enum omp_clause_depend_kind depend_kind;
1571 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1572 unsigned int map_kind;
1573 enum omp_clause_proc_bind_kind proc_bind_kind;
1574 enum tree_code reduction_code;
1575 enum omp_clause_linear_kind linear_kind;
1576 enum tree_code if_modifier;
1577 enum omp_clause_defaultmap_kind defaultmap_kind;
1578 enum omp_clause_bind_kind bind_kind;
1579 enum omp_clause_device_type_kind device_type_kind;
1580 } GTY ((skip)) subcode;
1582 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1583 usage. */
1584 gimple_seq gimple_reduction_init;
1585 gimple_seq gimple_reduction_merge;
1587 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1588 ops[1];
1591 struct GTY(()) tree_block {
1592 struct tree_base base;
1593 tree chain;
1595 unsigned block_num;
1597 location_t locus;
1598 location_t end_locus;
1600 tree vars;
1601 vec<tree, va_gc> *nonlocalized_vars;
1603 tree subblocks;
1604 tree supercontext;
1605 tree abstract_origin;
1606 tree fragment_origin;
1607 tree fragment_chain;
1609 /* Pointer to the DWARF lexical block. */
1610 struct die_struct *die;
1613 struct GTY(()) tree_type_common {
1614 struct tree_common common;
1615 tree size;
1616 tree size_unit;
1617 tree attributes;
1618 unsigned int uid;
1620 unsigned int precision : 10;
1621 unsigned no_force_blk_flag : 1;
1622 unsigned needs_constructing_flag : 1;
1623 unsigned transparent_aggr_flag : 1;
1624 unsigned restrict_flag : 1;
1625 unsigned contains_placeholder_bits : 2;
1627 ENUM_BITFIELD(machine_mode) mode : 8;
1629 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE.
1630 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */
1631 unsigned string_flag : 1;
1632 unsigned lang_flag_0 : 1;
1633 unsigned lang_flag_1 : 1;
1634 unsigned lang_flag_2 : 1;
1635 unsigned lang_flag_3 : 1;
1636 unsigned lang_flag_4 : 1;
1637 unsigned lang_flag_5 : 1;
1638 unsigned lang_flag_6 : 1;
1639 unsigned lang_flag_7 : 1;
1641 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1642 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1643 the latter being usually the larger. For ELF it is 8<<28,
1644 so we need to store the value 32 (not 31, as we need the zero
1645 as well), hence six bits. */
1646 unsigned align : 6;
1647 unsigned warn_if_not_align : 6;
1648 unsigned typeless_storage : 1;
1649 unsigned empty_flag : 1;
1650 unsigned indivisible_p : 1;
1651 unsigned spare : 16;
1653 alias_set_type alias_set;
1654 tree pointer_to;
1655 tree reference_to;
1656 union tree_type_symtab {
1657 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1658 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1659 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1660 tree canonical;
1661 tree next_variant;
1662 tree main_variant;
1663 tree context;
1664 tree name;
1667 struct GTY(()) tree_type_with_lang_specific {
1668 struct tree_type_common common;
1669 /* Points to a structure whose details depend on the language in use. */
1670 struct lang_type *lang_specific;
1673 struct GTY(()) tree_type_non_common {
1674 struct tree_type_with_lang_specific with_lang_specific;
1675 tree values;
1676 tree minval;
1677 tree maxval;
1678 tree lang_1;
1681 struct GTY (()) tree_binfo {
1682 struct tree_common common;
1684 tree offset;
1685 tree vtable;
1686 tree virtuals;
1687 tree vptr_field;
1688 vec<tree, va_gc> *base_accesses;
1689 tree inheritance;
1691 tree vtt_subvtt;
1692 tree vtt_vptr;
1694 vec<tree, va_gc> base_binfos;
1697 struct GTY(()) tree_decl_minimal {
1698 struct tree_common common;
1699 location_t locus;
1700 unsigned int uid;
1701 tree name;
1702 tree context;
1705 struct GTY(()) tree_decl_common {
1706 struct tree_decl_minimal common;
1707 tree size;
1709 ENUM_BITFIELD(machine_mode) mode : 8;
1711 unsigned nonlocal_flag : 1;
1712 unsigned virtual_flag : 1;
1713 unsigned ignored_flag : 1;
1714 unsigned abstract_flag : 1;
1715 unsigned artificial_flag : 1;
1716 unsigned preserve_flag: 1;
1717 unsigned debug_expr_is_from : 1;
1719 unsigned lang_flag_0 : 1;
1720 unsigned lang_flag_1 : 1;
1721 unsigned lang_flag_2 : 1;
1722 unsigned lang_flag_3 : 1;
1723 unsigned lang_flag_4 : 1;
1724 unsigned lang_flag_5 : 1;
1725 unsigned lang_flag_6 : 1;
1726 unsigned lang_flag_7 : 1;
1727 unsigned lang_flag_8 : 1;
1729 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1730 In TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P.
1731 In FIELD_DECL, this is DECL_FIELD_ABI_IGNORED. */
1732 unsigned decl_flag_0 : 1;
1733 /* In FIELD_DECL, this is DECL_BIT_FIELD
1734 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1735 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1736 unsigned decl_flag_1 : 1;
1737 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1738 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1739 DECL_HAS_VALUE_EXPR_P. */
1740 unsigned decl_flag_2 : 1;
1741 /* In FIELD_DECL, this is DECL_PADDING_P. */
1742 unsigned decl_flag_3 : 1;
1743 /* Logically, these two would go in a theoretical base shared by var and
1744 parm decl. */
1745 unsigned not_gimple_reg_flag : 1;
1746 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1747 unsigned decl_by_reference_flag : 1;
1748 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1749 unsigned decl_read_flag : 1;
1750 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1751 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */
1752 unsigned decl_nonshareable_flag : 1;
1754 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1755 unsigned int off_align : 6;
1757 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1758 unsigned int align : 6;
1760 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1761 TYPE_WARN_IF_NOT_ALIGN. */
1762 unsigned int warn_if_not_align : 6;
1764 /* 14 bits unused. */
1766 /* UID for points-to sets, stable over copying from inlining. */
1767 unsigned int pt_uid;
1769 tree size_unit;
1770 tree initial;
1771 tree attributes;
1772 tree abstract_origin;
1774 /* Points to a structure whose details depend on the language in use. */
1775 struct lang_decl *lang_specific;
1778 struct GTY(()) tree_decl_with_rtl {
1779 struct tree_decl_common common;
1780 rtx rtl;
1783 struct GTY(()) tree_field_decl {
1784 struct tree_decl_common common;
1786 tree offset;
1787 tree bit_field_type;
1788 tree qualifier;
1789 tree bit_offset;
1790 tree fcontext;
1793 struct GTY(()) tree_label_decl {
1794 struct tree_decl_with_rtl common;
1795 int label_decl_uid;
1796 int eh_landing_pad_nr;
1799 struct GTY(()) tree_result_decl {
1800 struct tree_decl_with_rtl common;
1803 struct GTY(()) tree_const_decl {
1804 struct tree_decl_common common;
1807 struct GTY(()) tree_parm_decl {
1808 struct tree_decl_with_rtl common;
1809 rtx incoming_rtl;
1812 struct GTY(()) tree_decl_with_vis {
1813 struct tree_decl_with_rtl common;
1814 tree assembler_name;
1815 struct symtab_node *symtab_node;
1817 /* Belong to VAR_DECL exclusively. */
1818 unsigned defer_output : 1;
1819 unsigned hard_register : 1;
1820 unsigned common_flag : 1;
1821 unsigned in_text_section : 1;
1822 unsigned in_constant_pool : 1;
1823 unsigned dllimport_flag : 1;
1824 /* Don't belong to VAR_DECL exclusively. */
1825 unsigned weak_flag : 1;
1827 unsigned seen_in_bind_expr : 1;
1828 unsigned comdat_flag : 1;
1829 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1830 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1831 unsigned visibility_specified : 1;
1833 /* Belong to FUNCTION_DECL exclusively. */
1834 unsigned init_priority_p : 1;
1835 /* Used by C++ only. Might become a generic decl flag. */
1836 unsigned shadowed_for_var_p : 1;
1837 /* Belong to FUNCTION_DECL exclusively. */
1838 unsigned cxx_constructor : 1;
1839 /* Belong to FUNCTION_DECL exclusively. */
1840 unsigned cxx_destructor : 1;
1841 /* Belong to FUNCTION_DECL exclusively. */
1842 unsigned final : 1;
1843 /* Belong to FUNCTION_DECL exclusively. */
1844 unsigned regdecl_flag : 1;
1845 /* 14 unused bits. */
1846 /* 32 more unused on 64 bit HW. */
1849 struct GTY(()) tree_var_decl {
1850 struct tree_decl_with_vis common;
1853 struct GTY(()) tree_decl_non_common {
1854 struct tree_decl_with_vis common;
1855 /* Almost all FE's use this. */
1856 tree result;
1859 /* Classify a special function declaration type. */
1861 enum function_decl_type
1863 NONE,
1864 OPERATOR_NEW,
1865 OPERATOR_DELETE,
1866 LAMBDA_FUNCTION
1868 /* 0 values left */
1871 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1872 arguments/result/saved_tree fields by front ends. It was either inherit
1873 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1874 which seemed a bit strange. */
1876 struct GTY(()) tree_function_decl {
1877 struct tree_decl_non_common common;
1879 struct function *f;
1881 /* Arguments of the function. */
1882 tree arguments;
1883 /* The personality function. Used for stack unwinding. */
1884 tree personality;
1886 /* Function specific options that are used by this function. */
1887 tree function_specific_target; /* target options */
1888 tree function_specific_optimization; /* optimization options */
1890 /* Generic function body. */
1891 tree saved_tree;
1892 /* Index within a virtual table. */
1893 tree vindex;
1895 /* In a FUNCTION_DECL this is DECL_UNCHECKED_FUNCTION_CODE. */
1896 unsigned int function_code;
1898 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1899 unsigned static_ctor_flag : 1;
1900 unsigned static_dtor_flag : 1;
1901 unsigned uninlinable : 1;
1902 unsigned possibly_inlined : 1;
1903 unsigned novops_flag : 1;
1904 unsigned returns_twice_flag : 1;
1906 unsigned malloc_flag : 1;
1907 unsigned declared_inline_flag : 1;
1908 unsigned no_inline_warning_flag : 1;
1909 unsigned no_instrument_function_entry_exit : 1;
1910 unsigned no_limit_stack : 1;
1911 unsigned disregard_inline_limits : 1;
1912 unsigned pure_flag : 1;
1913 unsigned looping_const_or_pure_flag : 1;
1915 /* Align the bitfield to boundary of a byte. */
1916 ENUM_BITFIELD(function_decl_type) decl_type: 2;
1917 unsigned has_debug_args_flag : 1;
1918 unsigned versioned_function : 1;
1919 unsigned replaceable_operator : 1;
1921 /* 11 bits left for future expansion. */
1922 /* 32 bits on 64-bit HW. */
1925 struct GTY(()) tree_translation_unit_decl {
1926 struct tree_decl_common common;
1927 /* Source language of this translation unit. Used for DWARF output. */
1928 const char * GTY((skip(""))) language;
1929 /* TODO: Non-optimization used to build this translation unit. */
1930 /* TODO: Root of a partial DWARF tree for global types and decls. */
1933 struct GTY(()) tree_type_decl {
1934 struct tree_decl_non_common common;
1938 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1940 struct tree_statement_list_node *prev;
1941 struct tree_statement_list_node *next;
1942 tree stmt;
1945 struct GTY(()) tree_statement_list
1947 struct tree_typed typed;
1948 struct tree_statement_list_node *head;
1949 struct tree_statement_list_node *tail;
1953 /* Optimization options used by a function. */
1955 struct GTY(()) tree_optimization_option {
1956 struct tree_base base;
1958 /* The optimization options used by the user. */
1959 struct cl_optimization *opts;
1961 /* Target optabs for this set of optimization options. This is of
1962 type `struct target_optabs *'. */
1963 void *GTY ((atomic)) optabs;
1965 /* The value of this_target_optabs against which the optabs above were
1966 generated. */
1967 struct target_optabs *GTY ((skip)) base_optabs;
1970 /* Forward declaration, defined in target-globals.h. */
1972 class GTY(()) target_globals;
1974 /* Target options used by a function. */
1976 struct GTY(()) tree_target_option {
1977 struct tree_base base;
1979 /* Target globals for the corresponding target option. */
1980 class target_globals *globals;
1982 /* The optimization options used by the user. */
1983 struct cl_target_option *opts;
1986 /* Define the overall contents of a tree node.
1987 It may be any of the structures declared above
1988 for various types of node. */
1989 union GTY ((ptr_alias (union lang_tree_node),
1990 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
1991 struct tree_base GTY ((tag ("TS_BASE"))) base;
1992 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
1993 struct tree_common GTY ((tag ("TS_COMMON"))) common;
1994 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
1995 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst;
1996 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
1997 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
1998 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
1999 struct tree_string GTY ((tag ("TS_STRING"))) string;
2000 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
2001 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
2002 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
2003 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
2004 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
2005 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
2006 decl_non_common;
2007 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
2008 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
2009 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
2010 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
2011 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
2012 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
2013 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
2014 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
2015 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
2016 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
2017 translation_unit_decl;
2018 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
2019 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
2020 type_with_lang_specific;
2021 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
2022 type_non_common;
2023 struct tree_list GTY ((tag ("TS_LIST"))) list;
2024 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
2025 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
2026 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
2027 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
2028 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
2029 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
2030 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
2031 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
2032 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
2033 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
2036 /* Structure describing an attribute and a function to handle it. */
2037 struct attribute_spec {
2038 /* The name of the attribute (without any leading or trailing __),
2039 or NULL to mark the end of a table of attributes. */
2040 const char *name;
2041 /* The minimum length of the list of arguments of the attribute. */
2042 int min_length;
2043 /* The maximum length of the list of arguments of the attribute
2044 (-1 for no maximum). */
2045 int max_length;
2046 /* Whether this attribute requires a DECL. If it does, it will be passed
2047 from types of DECLs, function return types and array element types to
2048 the DECLs, function types and array types respectively; but when
2049 applied to a type in any other circumstances, it will be ignored with
2050 a warning. (If greater control is desired for a given attribute,
2051 this should be false, and the flags argument to the handler may be
2052 used to gain greater control in that case.) */
2053 bool decl_required;
2054 /* Whether this attribute requires a type. If it does, it will be passed
2055 from a DECL to the type of that DECL. */
2056 bool type_required;
2057 /* Whether this attribute requires a function (or method) type. If it does,
2058 it will be passed from a function pointer type to the target type,
2059 and from a function return type (which is not itself a function
2060 pointer type) to the function type. */
2061 bool function_type_required;
2062 /* Specifies if attribute affects type's identity. */
2063 bool affects_type_identity;
2064 /* Function to handle this attribute. NODE points to the node to which
2065 the attribute is to be applied. If a DECL, it should be modified in
2066 place; if a TYPE, a copy should be created. NAME is the canonicalized
2067 name of the attribute i.e. without any leading or trailing underscores.
2068 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
2069 further information about the context of the attribute. Afterwards, the
2070 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
2071 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
2072 error, as well as in any other cases when the attributes should not be
2073 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
2074 applied to another type or DECL later may be returned;
2075 otherwise the return value should be NULL_TREE. This pointer may be
2076 NULL if no special handling is required beyond the checks implied
2077 by the rest of this structure. */
2078 tree (*handler) (tree *node, tree name, tree args,
2079 int flags, bool *no_add_attrs);
2081 /* Specifies the name of an attribute that's mutually exclusive with
2082 this one, and whether the relationship applies to the function,
2083 variable, or type form of the attribute. */
2084 struct exclusions {
2085 const char *name;
2086 bool function;
2087 bool variable;
2088 bool type;
2091 /* An array of attribute exclusions describing names of other attributes
2092 that this attribute is mutually exclusive with. */
2093 const exclusions *exclude;
2096 /* These functions allow a front-end to perform a manual layout of a
2097 RECORD_TYPE. (For instance, if the placement of subsequent fields
2098 depends on the placement of fields so far.) Begin by calling
2099 start_record_layout. Then, call place_field for each of the
2100 fields. Then, call finish_record_layout. See layout_type for the
2101 default way in which these functions are used. */
2102 typedef struct record_layout_info_s {
2103 /* The RECORD_TYPE that we are laying out. */
2104 tree t;
2105 /* The offset into the record so far, in bytes, not including bits in
2106 BITPOS. */
2107 tree offset;
2108 /* The last known alignment of SIZE. */
2109 unsigned int offset_align;
2110 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
2111 tree bitpos;
2112 /* The alignment of the record so far, in bits. */
2113 unsigned int record_align;
2114 /* The alignment of the record so far, ignoring #pragma pack and
2115 __attribute__ ((packed)), in bits. */
2116 unsigned int unpacked_align;
2117 /* The previous field laid out. */
2118 tree prev_field;
2119 /* The static variables (i.e., class variables, as opposed to
2120 instance variables) encountered in T. */
2121 vec<tree, va_gc> *pending_statics;
2122 /* Bits remaining in the current alignment group */
2123 int remaining_in_alignment;
2124 /* True if we've seen a packed field that didn't have normal
2125 alignment anyway. */
2126 int packed_maybe_necessary;
2127 } *record_layout_info;
2129 /* Iterator for going through the function arguments. */
2130 struct function_args_iterator {
2131 tree next; /* TREE_LIST pointing to the next argument */
2134 /* Structures to map from a tree to another tree. */
2135 struct GTY(()) tree_map_base {
2136 tree from;
2139 /* Map from a tree to another tree. */
2141 struct GTY((for_user)) tree_map {
2142 struct tree_map_base base;
2143 unsigned int hash;
2144 tree to;
2147 /* Map from a decl tree to another tree. */
2148 struct GTY((for_user)) tree_decl_map {
2149 struct tree_map_base base;
2150 tree to;
2153 /* Map from a tree to an int. */
2154 struct GTY((for_user)) tree_int_map {
2155 struct tree_map_base base;
2156 unsigned int to;
2159 /* Map from a decl tree to a tree vector. */
2160 struct GTY((for_user)) tree_vec_map {
2161 struct tree_map_base base;
2162 vec<tree, va_gc> *to;
2165 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2166 have to go towards the end of tree.h so that union tree_node is fully
2167 defined by this point. */
2169 /* Structure containing iterator state. */
2170 struct call_expr_arg_iterator {
2171 tree t; /* the call_expr */
2172 int n; /* argument count */
2173 int i; /* next argument index */
2176 struct const_call_expr_arg_iterator {
2177 const_tree t; /* the call_expr */
2178 int n; /* argument count */
2179 int i; /* next argument index */
2182 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2183 function, and flags. */
2184 struct GTY(()) builtin_info_type {
2185 tree decl;
2186 /* Whether the user can use <xxx> instead of explicitly using calls
2187 to __builtin_<xxx>. */
2188 unsigned implicit_p : 1;
2189 /* Whether the user has provided a declaration of <xxx>. */
2190 unsigned declared_p : 1;
2193 /* Information about a _FloatN or _FloatNx type that may be
2194 supported. */
2195 struct floatn_type_info {
2196 /* The number N in the type name. */
2197 int n;
2198 /* Whether it is an extended type _FloatNx (true) or an interchange
2199 type (false). */
2200 bool extended;
2204 /*---------------------------------------------------------------------------
2205 Global variables
2206 ---------------------------------------------------------------------------*/
2207 /* Matrix describing the structures contained in a given tree code. */
2208 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2210 /* Class of tree given its code. */
2211 extern const enum tree_code_class tree_code_type[];
2213 /* Each tree code class has an associated string representation.
2214 These must correspond to the tree_code_class entries. */
2215 extern const char *const tree_code_class_strings[];
2217 /* Number of argument-words in each kind of tree-node. */
2218 extern const unsigned char tree_code_length[];
2220 /* Vector of all alias pairs for global symbols. */
2221 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2223 /* Names of all the built_in classes. */
2224 extern const char *const built_in_class_names[BUILT_IN_LAST];
2226 /* Names of all the built_in functions. */
2227 extern const char * built_in_names[(int) END_BUILTINS];
2229 /* Number of operands and names for each OMP_CLAUSE node. */
2230 extern unsigned const char omp_clause_num_ops[];
2231 extern const char * const omp_clause_code_name[];
2233 /* A vector of all translation-units. */
2234 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2236 /* Vector of standard trees used by the C compiler. */
2237 extern GTY(()) tree global_trees[TI_MAX];
2239 /* The standard C integer types. Use integer_type_kind to index into
2240 this array. */
2241 extern GTY(()) tree integer_types[itk_none];
2243 /* Types used to represent sizes. */
2244 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2246 /* Arrays for keeping track of tree node statistics. */
2247 extern uint64_t tree_node_counts[];
2248 extern uint64_t tree_node_sizes[];
2250 /* True if we are in gimple form and the actions of the folders need to
2251 be restricted. False if we are not in gimple form and folding is not
2252 restricted to creating gimple expressions. */
2253 extern bool in_gimple_form;
2255 /* Functional interface to the builtin functions. */
2256 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2258 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2259 extern unsigned int maximum_field_alignment;
2261 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2262 extern GTY(()) tree current_function_decl;
2264 /* Nonzero means a FUNC_BEGIN label was emitted. */
2265 extern GTY(()) const char * current_function_func_begin_label;
2267 /* Information about the _FloatN and _FloatNx types. */
2268 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2270 #endif // GCC_TREE_CORE_H