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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. */
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: to (extended-list).
306 Only when it appears in declare target. */
307 OMP_CLAUSE_TO_DECLARE,
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 /* Internal structure to hold OpenACC cache directive's variable-list.
346 #pragma acc cache (variable-list). */
347 OMP_CLAUSE__CACHE_,
349 /* OpenACC clause: gang [(gang-argument-list)].
350 Where
351 gang-argument-list: [gang-argument-list, ] gang-argument
352 gang-argument: [num:] integer-expression
353 | static: size-expression
354 size-expression: * | integer-expression. */
355 OMP_CLAUSE_GANG,
357 /* OpenACC clause: async [(integer-expression)]. */
358 OMP_CLAUSE_ASYNC,
360 /* OpenACC clause: wait [(integer-expression-list)]. */
361 OMP_CLAUSE_WAIT,
363 /* OpenACC clause: auto. */
364 OMP_CLAUSE_AUTO,
366 /* OpenACC clause: seq. */
367 OMP_CLAUSE_SEQ,
369 /* Internal clause: temporary for combined loops expansion. */
370 OMP_CLAUSE__LOOPTEMP_,
372 /* Internal clause: temporary for task reductions. */
373 OMP_CLAUSE__REDUCTEMP_,
375 /* Internal clause: temporary for lastprivate(conditional:). */
376 OMP_CLAUSE__CONDTEMP_,
378 /* Internal clause: temporary for inscan reductions. */
379 OMP_CLAUSE__SCANTEMP_,
381 /* OpenACC/OpenMP clause: if (scalar-expression). */
382 OMP_CLAUSE_IF,
384 /* OpenMP clause: num_threads (integer-expression). */
385 OMP_CLAUSE_NUM_THREADS,
387 /* OpenMP clause: schedule. */
388 OMP_CLAUSE_SCHEDULE,
390 /* OpenMP clause: nowait. */
391 OMP_CLAUSE_NOWAIT,
393 /* OpenMP clause: ordered [(constant-integer-expression)]. */
394 OMP_CLAUSE_ORDERED,
396 /* OpenACC/OpenMP clause: default. */
397 OMP_CLAUSE_DEFAULT,
399 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
400 OMP_CLAUSE_COLLAPSE,
402 /* OpenMP clause: untied. */
403 OMP_CLAUSE_UNTIED,
405 /* OpenMP clause: final (scalar-expression). */
406 OMP_CLAUSE_FINAL,
408 /* OpenMP clause: mergeable. */
409 OMP_CLAUSE_MERGEABLE,
411 /* OpenMP clause: device (integer-expression). */
412 OMP_CLAUSE_DEVICE,
414 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
415 OMP_CLAUSE_DIST_SCHEDULE,
417 /* OpenMP clause: inbranch. */
418 OMP_CLAUSE_INBRANCH,
420 /* OpenMP clause: notinbranch. */
421 OMP_CLAUSE_NOTINBRANCH,
423 /* OpenMP clause: num_teams(integer-expression). */
424 OMP_CLAUSE_NUM_TEAMS,
426 /* OpenMP clause: thread_limit(integer-expression). */
427 OMP_CLAUSE_THREAD_LIMIT,
429 /* OpenMP clause: proc_bind ({master,close,spread}). */
430 OMP_CLAUSE_PROC_BIND,
432 /* OpenMP clause: safelen (constant-integer-expression). */
433 OMP_CLAUSE_SAFELEN,
435 /* OpenMP clause: simdlen (constant-integer-expression). */
436 OMP_CLAUSE_SIMDLEN,
438 /* OpenMP clause: device_type ({host,nohost,any}). */
439 OMP_CLAUSE_DEVICE_TYPE,
441 /* OpenMP clause: for. */
442 OMP_CLAUSE_FOR,
444 /* OpenMP clause: parallel. */
445 OMP_CLAUSE_PARALLEL,
447 /* OpenMP clause: sections. */
448 OMP_CLAUSE_SECTIONS,
450 /* OpenMP clause: taskgroup. */
451 OMP_CLAUSE_TASKGROUP,
453 /* OpenMP clause: priority (integer-expression). */
454 OMP_CLAUSE_PRIORITY,
456 /* OpenMP clause: grainsize (integer-expression). */
457 OMP_CLAUSE_GRAINSIZE,
459 /* OpenMP clause: num_tasks (integer-expression). */
460 OMP_CLAUSE_NUM_TASKS,
462 /* OpenMP clause: nogroup. */
463 OMP_CLAUSE_NOGROUP,
465 /* OpenMP clause: threads. */
466 OMP_CLAUSE_THREADS,
468 /* OpenMP clause: simd. */
469 OMP_CLAUSE_SIMD,
471 /* OpenMP clause: hint (integer-expression). */
472 OMP_CLAUSE_HINT,
474 /* OpenMP clause: defaultmap (tofrom: scalar). */
475 OMP_CLAUSE_DEFAULTMAP,
477 /* OpenMP clause: order (concurrent). */
478 OMP_CLAUSE_ORDER,
480 /* OpenMP clause: bind (binding). */
481 OMP_CLAUSE_BIND,
483 /* OpenMP clause: filter (integer-expression). */
484 OMP_CLAUSE_FILTER,
486 /* Internally used only clause, holding SIMD uid. */
487 OMP_CLAUSE__SIMDUID_,
489 /* Internally used only clause, flag whether this is SIMT simd
490 loop or not. */
491 OMP_CLAUSE__SIMT_,
493 /* OpenACC clause: independent. */
494 OMP_CLAUSE_INDEPENDENT,
496 /* OpenACC clause: worker [( [num:] integer-expression)]. */
497 OMP_CLAUSE_WORKER,
499 /* OpenACC clause: vector [( [length:] integer-expression)]. */
500 OMP_CLAUSE_VECTOR,
502 /* OpenACC clause: num_gangs (integer-expression). */
503 OMP_CLAUSE_NUM_GANGS,
505 /* OpenACC clause: num_workers (integer-expression). */
506 OMP_CLAUSE_NUM_WORKERS,
508 /* OpenACC clause: vector_length (integer-expression). */
509 OMP_CLAUSE_VECTOR_LENGTH,
511 /* OpenACC clause: tile ( size-expr-list ). */
512 OMP_CLAUSE_TILE,
514 /* OpenACC clause: if_present. */
515 OMP_CLAUSE_IF_PRESENT,
517 /* OpenACC clause: finalize. */
518 OMP_CLAUSE_FINALIZE,
520 /* OpenACC clause: nohost. */
521 OMP_CLAUSE_NOHOST,
524 #undef DEFTREESTRUCT
525 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
526 enum tree_node_structure_enum {
527 #include "treestruct.def"
528 LAST_TS_ENUM
530 #undef DEFTREESTRUCT
532 enum omp_clause_schedule_kind {
533 OMP_CLAUSE_SCHEDULE_STATIC,
534 OMP_CLAUSE_SCHEDULE_DYNAMIC,
535 OMP_CLAUSE_SCHEDULE_GUIDED,
536 OMP_CLAUSE_SCHEDULE_AUTO,
537 OMP_CLAUSE_SCHEDULE_RUNTIME,
538 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
539 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
540 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
541 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
544 enum omp_clause_default_kind {
545 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
546 OMP_CLAUSE_DEFAULT_SHARED,
547 OMP_CLAUSE_DEFAULT_NONE,
548 OMP_CLAUSE_DEFAULT_PRIVATE,
549 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
550 OMP_CLAUSE_DEFAULT_PRESENT,
551 OMP_CLAUSE_DEFAULT_LAST
554 enum omp_clause_defaultmap_kind {
555 OMP_CLAUSE_DEFAULTMAP_CATEGORY_UNSPECIFIED,
556 OMP_CLAUSE_DEFAULTMAP_CATEGORY_SCALAR,
557 OMP_CLAUSE_DEFAULTMAP_CATEGORY_AGGREGATE,
558 OMP_CLAUSE_DEFAULTMAP_CATEGORY_ALLOCATABLE,
559 OMP_CLAUSE_DEFAULTMAP_CATEGORY_POINTER,
560 OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK = 7,
561 OMP_CLAUSE_DEFAULTMAP_ALLOC = 1 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
562 OMP_CLAUSE_DEFAULTMAP_TO = 2 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
563 OMP_CLAUSE_DEFAULTMAP_FROM = 3 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
564 OMP_CLAUSE_DEFAULTMAP_TOFROM = 4 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
565 OMP_CLAUSE_DEFAULTMAP_FIRSTPRIVATE
566 = 5 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
567 OMP_CLAUSE_DEFAULTMAP_NONE = 6 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
568 OMP_CLAUSE_DEFAULTMAP_DEFAULT
569 = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1),
570 OMP_CLAUSE_DEFAULTMAP_MASK = 7 * (OMP_CLAUSE_DEFAULTMAP_CATEGORY_MASK + 1)
573 enum omp_clause_bind_kind {
574 OMP_CLAUSE_BIND_TEAMS,
575 OMP_CLAUSE_BIND_PARALLEL,
576 OMP_CLAUSE_BIND_THREAD
579 /* memory-order-clause on OpenMP atomic/flush constructs or
580 argument of atomic_default_mem_order clause. */
581 enum omp_memory_order {
582 OMP_MEMORY_ORDER_UNSPECIFIED,
583 OMP_MEMORY_ORDER_RELAXED,
584 OMP_MEMORY_ORDER_ACQUIRE,
585 OMP_MEMORY_ORDER_RELEASE,
586 OMP_MEMORY_ORDER_ACQ_REL,
587 OMP_MEMORY_ORDER_SEQ_CST,
588 OMP_MEMORY_ORDER_MASK = 7,
589 OMP_FAIL_MEMORY_ORDER_UNSPECIFIED = OMP_MEMORY_ORDER_UNSPECIFIED * 8,
590 OMP_FAIL_MEMORY_ORDER_RELAXED = OMP_MEMORY_ORDER_RELAXED * 8,
591 OMP_FAIL_MEMORY_ORDER_ACQUIRE = OMP_MEMORY_ORDER_ACQUIRE * 8,
592 OMP_FAIL_MEMORY_ORDER_RELEASE = OMP_MEMORY_ORDER_RELEASE * 8,
593 OMP_FAIL_MEMORY_ORDER_ACQ_REL = OMP_MEMORY_ORDER_ACQ_REL * 8,
594 OMP_FAIL_MEMORY_ORDER_SEQ_CST = OMP_MEMORY_ORDER_SEQ_CST * 8,
595 OMP_FAIL_MEMORY_ORDER_MASK = OMP_MEMORY_ORDER_MASK * 8
597 #define OMP_FAIL_MEMORY_ORDER_SHIFT 3
599 /* There is a TYPE_QUAL value for each type qualifier. They can be
600 combined by bitwise-or to form the complete set of qualifiers for a
601 type. */
602 enum cv_qualifier {
603 TYPE_UNQUALIFIED = 0x0,
604 TYPE_QUAL_CONST = 0x1,
605 TYPE_QUAL_VOLATILE = 0x2,
606 TYPE_QUAL_RESTRICT = 0x4,
607 TYPE_QUAL_ATOMIC = 0x8
610 /* Standard named or nameless data types of the C compiler. */
611 enum tree_index {
612 TI_ERROR_MARK,
613 TI_INTQI_TYPE,
614 TI_INTHI_TYPE,
615 TI_INTSI_TYPE,
616 TI_INTDI_TYPE,
617 TI_INTTI_TYPE,
619 TI_UINTQI_TYPE,
620 TI_UINTHI_TYPE,
621 TI_UINTSI_TYPE,
622 TI_UINTDI_TYPE,
623 TI_UINTTI_TYPE,
625 TI_ATOMICQI_TYPE,
626 TI_ATOMICHI_TYPE,
627 TI_ATOMICSI_TYPE,
628 TI_ATOMICDI_TYPE,
629 TI_ATOMICTI_TYPE,
631 TI_UINT16_TYPE,
632 TI_UINT32_TYPE,
633 TI_UINT64_TYPE,
634 TI_UINT128_TYPE,
636 TI_VOID,
638 TI_INTEGER_ZERO,
639 TI_INTEGER_ONE,
640 TI_INTEGER_THREE,
641 TI_INTEGER_MINUS_ONE,
642 TI_NULL_POINTER,
644 TI_SIZE_ZERO,
645 TI_SIZE_ONE,
647 TI_BITSIZE_ZERO,
648 TI_BITSIZE_ONE,
649 TI_BITSIZE_UNIT,
651 TI_PUBLIC,
652 TI_PROTECTED,
653 TI_PRIVATE,
655 TI_BOOLEAN_FALSE,
656 TI_BOOLEAN_TRUE,
658 TI_FLOAT_TYPE,
659 TI_DOUBLE_TYPE,
660 TI_LONG_DOUBLE_TYPE,
662 /* The _FloatN and _FloatNx types must be consecutive, and in the
663 same sequence as the corresponding complex types, which must also
664 be consecutive; _FloatN must come before _FloatNx; the order must
665 also be the same as in the floatn_nx_types array and the RID_*
666 values in c-common.h. This is so that iterations over these
667 types work as intended. */
668 TI_FLOAT16_TYPE,
669 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
670 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
671 TI_FLOAT32_TYPE,
672 TI_FLOAT64_TYPE,
673 TI_FLOAT128_TYPE,
674 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
675 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
676 TI_FLOAT32X_TYPE,
677 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
678 TI_FLOAT64X_TYPE,
679 TI_FLOAT128X_TYPE,
680 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
681 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
682 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
683 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
684 - TI_FLOATN_NX_TYPE_FIRST \
685 + 1)
687 /* Put the complex types after their component types, so that in (sequential)
688 tree streaming we can assert that their component types have already been
689 handled (see tree-streamer.c:record_common_node). */
690 TI_COMPLEX_INTEGER_TYPE,
691 TI_COMPLEX_FLOAT_TYPE,
692 TI_COMPLEX_DOUBLE_TYPE,
693 TI_COMPLEX_LONG_DOUBLE_TYPE,
695 TI_COMPLEX_FLOAT16_TYPE,
696 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
697 TI_COMPLEX_FLOAT32_TYPE,
698 TI_COMPLEX_FLOAT64_TYPE,
699 TI_COMPLEX_FLOAT128_TYPE,
700 TI_COMPLEX_FLOAT32X_TYPE,
701 TI_COMPLEX_FLOAT64X_TYPE,
702 TI_COMPLEX_FLOAT128X_TYPE,
704 TI_FLOAT_PTR_TYPE,
705 TI_DOUBLE_PTR_TYPE,
706 TI_LONG_DOUBLE_PTR_TYPE,
707 TI_INTEGER_PTR_TYPE,
709 TI_VOID_TYPE,
710 TI_PTR_TYPE,
711 TI_CONST_PTR_TYPE,
712 TI_SIZE_TYPE,
713 TI_PID_TYPE,
714 TI_PTRDIFF_TYPE,
715 TI_VA_LIST_TYPE,
716 TI_VA_LIST_GPR_COUNTER_FIELD,
717 TI_VA_LIST_FPR_COUNTER_FIELD,
718 TI_BOOLEAN_TYPE,
719 TI_FILEPTR_TYPE,
720 TI_CONST_TM_PTR_TYPE,
721 TI_FENV_T_PTR_TYPE,
722 TI_CONST_FENV_T_PTR_TYPE,
723 TI_FEXCEPT_T_PTR_TYPE,
724 TI_CONST_FEXCEPT_T_PTR_TYPE,
725 TI_POINTER_SIZED_TYPE,
727 TI_DFLOAT32_TYPE,
728 TI_DFLOAT64_TYPE,
729 TI_DFLOAT128_TYPE,
731 TI_VOID_LIST_NODE,
733 TI_MAIN_IDENTIFIER,
735 TI_SAT_SFRACT_TYPE,
736 TI_SAT_FRACT_TYPE,
737 TI_SAT_LFRACT_TYPE,
738 TI_SAT_LLFRACT_TYPE,
739 TI_SAT_USFRACT_TYPE,
740 TI_SAT_UFRACT_TYPE,
741 TI_SAT_ULFRACT_TYPE,
742 TI_SAT_ULLFRACT_TYPE,
743 TI_SFRACT_TYPE,
744 TI_FRACT_TYPE,
745 TI_LFRACT_TYPE,
746 TI_LLFRACT_TYPE,
747 TI_USFRACT_TYPE,
748 TI_UFRACT_TYPE,
749 TI_ULFRACT_TYPE,
750 TI_ULLFRACT_TYPE,
751 TI_SAT_SACCUM_TYPE,
752 TI_SAT_ACCUM_TYPE,
753 TI_SAT_LACCUM_TYPE,
754 TI_SAT_LLACCUM_TYPE,
755 TI_SAT_USACCUM_TYPE,
756 TI_SAT_UACCUM_TYPE,
757 TI_SAT_ULACCUM_TYPE,
758 TI_SAT_ULLACCUM_TYPE,
759 TI_SACCUM_TYPE,
760 TI_ACCUM_TYPE,
761 TI_LACCUM_TYPE,
762 TI_LLACCUM_TYPE,
763 TI_USACCUM_TYPE,
764 TI_UACCUM_TYPE,
765 TI_ULACCUM_TYPE,
766 TI_ULLACCUM_TYPE,
767 TI_QQ_TYPE,
768 TI_HQ_TYPE,
769 TI_SQ_TYPE,
770 TI_DQ_TYPE,
771 TI_TQ_TYPE,
772 TI_UQQ_TYPE,
773 TI_UHQ_TYPE,
774 TI_USQ_TYPE,
775 TI_UDQ_TYPE,
776 TI_UTQ_TYPE,
777 TI_SAT_QQ_TYPE,
778 TI_SAT_HQ_TYPE,
779 TI_SAT_SQ_TYPE,
780 TI_SAT_DQ_TYPE,
781 TI_SAT_TQ_TYPE,
782 TI_SAT_UQQ_TYPE,
783 TI_SAT_UHQ_TYPE,
784 TI_SAT_USQ_TYPE,
785 TI_SAT_UDQ_TYPE,
786 TI_SAT_UTQ_TYPE,
787 TI_HA_TYPE,
788 TI_SA_TYPE,
789 TI_DA_TYPE,
790 TI_TA_TYPE,
791 TI_UHA_TYPE,
792 TI_USA_TYPE,
793 TI_UDA_TYPE,
794 TI_UTA_TYPE,
795 TI_SAT_HA_TYPE,
796 TI_SAT_SA_TYPE,
797 TI_SAT_DA_TYPE,
798 TI_SAT_TA_TYPE,
799 TI_SAT_UHA_TYPE,
800 TI_SAT_USA_TYPE,
801 TI_SAT_UDA_TYPE,
802 TI_SAT_UTA_TYPE,
804 TI_MODULE_HWM,
805 /* Nodes below here change during compilation, and should therefore
806 not be in the C++ module's global tree table. */
808 TI_OPTIMIZATION_DEFAULT,
809 TI_OPTIMIZATION_CURRENT,
810 TI_TARGET_OPTION_DEFAULT,
811 TI_TARGET_OPTION_CURRENT,
812 TI_CURRENT_TARGET_PRAGMA,
813 TI_CURRENT_OPTIMIZE_PRAGMA,
815 TI_CHREC_DONT_KNOW,
816 TI_CHREC_KNOWN,
818 TI_MAX
821 /* An enumeration of the standard C integer types. These must be
822 ordered so that shorter types appear before longer ones, and so
823 that signed types appear before unsigned ones, for the correct
824 functioning of interpret_integer() in c-lex.c. */
825 enum integer_type_kind {
826 itk_char,
827 itk_signed_char,
828 itk_unsigned_char,
829 itk_short,
830 itk_unsigned_short,
831 itk_int,
832 itk_unsigned_int,
833 itk_long,
834 itk_unsigned_long,
835 itk_long_long,
836 itk_unsigned_long_long,
838 itk_intN_0,
839 itk_unsigned_intN_0,
840 itk_intN_1,
841 itk_unsigned_intN_1,
842 itk_intN_2,
843 itk_unsigned_intN_2,
844 itk_intN_3,
845 itk_unsigned_intN_3,
847 itk_none
850 /* A pointer-to-function member type looks like:
852 struct {
853 __P __pfn;
854 ptrdiff_t __delta;
857 If __pfn is NULL, it is a NULL pointer-to-member-function.
859 (Because the vtable is always the first thing in the object, we
860 don't need its offset.) If the function is virtual, then PFN is
861 one plus twice the index into the vtable; otherwise, it is just a
862 pointer to the function.
864 Unfortunately, using the lowest bit of PFN doesn't work in
865 architectures that don't impose alignment requirements on function
866 addresses, or that use the lowest bit to tell one ISA from another,
867 for example. For such architectures, we use the lowest bit of
868 DELTA instead of the lowest bit of the PFN, and DELTA will be
869 multiplied by 2. */
870 enum ptrmemfunc_vbit_where_t {
871 ptrmemfunc_vbit_in_pfn,
872 ptrmemfunc_vbit_in_delta
875 /* Flags that may be passed in the third argument of decl_attributes, and
876 to handler functions for attributes. */
877 enum attribute_flags {
878 /* The type passed in is the type of a DECL, and any attributes that
879 should be passed in again to be applied to the DECL rather than the
880 type should be returned. */
881 ATTR_FLAG_DECL_NEXT = 1,
882 /* The type passed in is a function return type, and any attributes that
883 should be passed in again to be applied to the function type rather
884 than the return type should be returned. */
885 ATTR_FLAG_FUNCTION_NEXT = 2,
886 /* The type passed in is an array element type, and any attributes that
887 should be passed in again to be applied to the array type rather
888 than the element type should be returned. */
889 ATTR_FLAG_ARRAY_NEXT = 4,
890 /* The type passed in is a structure, union or enumeration type being
891 created, and should be modified in place. */
892 ATTR_FLAG_TYPE_IN_PLACE = 8,
893 /* The attributes are being applied by default to a library function whose
894 name indicates known behavior, and should be silently ignored if they
895 are not in fact compatible with the function type. */
896 ATTR_FLAG_BUILT_IN = 16,
897 /* A given attribute has been parsed as a C++-11 attribute. */
898 ATTR_FLAG_CXX11 = 32,
899 /* The attribute handler is being invoked with an internal argument
900 that may not otherwise be valid when specified in source code. */
901 ATTR_FLAG_INTERNAL = 64
904 /* Types used to represent sizes. */
905 enum size_type_kind {
906 stk_sizetype, /* Normal representation of sizes in bytes. */
907 stk_ssizetype, /* Signed representation of sizes in bytes. */
908 stk_bitsizetype, /* Normal representation of sizes in bits. */
909 stk_sbitsizetype, /* Signed representation of sizes in bits. */
910 stk_type_kind_last
913 /* Flags controlling operand_equal_p() behavior. */
914 enum operand_equal_flag {
915 OEP_ONLY_CONST = 1,
916 OEP_PURE_SAME = 2,
917 OEP_MATCH_SIDE_EFFECTS = 4,
918 OEP_ADDRESS_OF = 8,
919 /* Internal within operand_equal_p: */
920 OEP_NO_HASH_CHECK = 16,
921 /* Internal within inchash::add_expr: */
922 OEP_HASH_CHECK = 32,
923 /* Makes operand_equal_p handle more expressions: */
924 OEP_LEXICOGRAPHIC = 64,
925 OEP_BITWISE = 128,
926 /* For OEP_ADDRESS_OF of COMPONENT_REFs, only consider same fields as
927 equivalent rather than also different fields with the same offset. */
928 OEP_ADDRESS_OF_SAME_FIELD = 256,
929 /* In conjunction with OEP_LEXICOGRAPHIC considers names of declarations
930 of the same kind. Used to compare VLA bounds involving parameters
931 across redeclarations of the same function. */
932 OEP_DECL_NAME = 512
935 /* Enum and arrays used for tree allocation stats.
936 Keep in sync with tree.c:tree_node_kind_names. */
937 enum tree_node_kind {
938 d_kind,
939 t_kind,
940 b_kind,
941 s_kind,
942 r_kind,
943 e_kind,
944 c_kind,
945 id_kind,
946 vec_kind,
947 binfo_kind,
948 ssa_name_kind,
949 constr_kind,
950 x_kind,
951 lang_decl,
952 lang_type,
953 omp_clause_kind,
954 all_kinds
957 enum annot_expr_kind {
958 annot_expr_ivdep_kind,
959 annot_expr_unroll_kind,
960 annot_expr_no_vector_kind,
961 annot_expr_vector_kind,
962 annot_expr_parallel_kind,
963 annot_expr_kind_last
966 /*---------------------------------------------------------------------------
967 Type definitions
968 ---------------------------------------------------------------------------*/
969 /* When processing aliases at the symbol table level, we need the
970 declaration of target. For this reason we need to queue aliases and
971 process them after all declarations has been produced. */
972 struct GTY(()) alias_pair {
973 tree decl;
974 tree target;
977 /* An initialization priority. */
978 typedef unsigned short priority_type;
980 /* The type of a callback function for walking over tree structure. */
981 typedef tree (*walk_tree_fn) (tree *, int *, void *);
983 /* The type of a callback function that represents a custom walk_tree. */
984 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
985 void *, hash_set<tree> *);
988 /*---------------------------------------------------------------------------
989 Main data structures
990 ---------------------------------------------------------------------------*/
991 /* A tree node can represent a data type, a variable, an expression
992 or a statement. Each node has a TREE_CODE which says what kind of
993 thing it represents. Some common codes are:
994 INTEGER_TYPE -- represents a type of integers.
995 ARRAY_TYPE -- represents a type of pointer.
996 VAR_DECL -- represents a declared variable.
997 INTEGER_CST -- represents a constant integer value.
998 PLUS_EXPR -- represents a sum (an expression).
1000 As for the contents of a tree node: there are some fields
1001 that all nodes share. Each TREE_CODE has various special-purpose
1002 fields as well. The fields of a node are never accessed directly,
1003 always through accessor macros. */
1005 /* Every kind of tree node starts with this structure,
1006 so all nodes have these fields.
1008 See the accessor macros, defined below, for documentation of the
1009 fields, and the table below which connects the fields and the
1010 accessor macros. */
1012 struct GTY(()) tree_base {
1013 ENUM_BITFIELD(tree_code) code : 16;
1015 unsigned side_effects_flag : 1;
1016 unsigned constant_flag : 1;
1017 unsigned addressable_flag : 1;
1018 unsigned volatile_flag : 1;
1019 unsigned readonly_flag : 1;
1020 unsigned asm_written_flag: 1;
1021 unsigned nowarning_flag : 1;
1022 unsigned visited : 1;
1024 unsigned used_flag : 1;
1025 unsigned nothrow_flag : 1;
1026 unsigned static_flag : 1;
1027 unsigned public_flag : 1;
1028 unsigned private_flag : 1;
1029 unsigned protected_flag : 1;
1030 unsigned deprecated_flag : 1;
1031 unsigned default_def_flag : 1;
1033 union {
1034 /* The bits in the following structure should only be used with
1035 accessor macros that constrain inputs with tree checking. */
1036 struct {
1037 unsigned lang_flag_0 : 1;
1038 unsigned lang_flag_1 : 1;
1039 unsigned lang_flag_2 : 1;
1040 unsigned lang_flag_3 : 1;
1041 unsigned lang_flag_4 : 1;
1042 unsigned lang_flag_5 : 1;
1043 unsigned lang_flag_6 : 1;
1044 unsigned saturating_flag : 1;
1046 unsigned unsigned_flag : 1;
1047 unsigned packed_flag : 1;
1048 unsigned user_align : 1;
1049 unsigned nameless_flag : 1;
1050 unsigned atomic_flag : 1;
1051 unsigned unavailable_flag : 1;
1052 unsigned spare0 : 2;
1054 unsigned spare1 : 8;
1056 /* This field is only used with TREE_TYPE nodes; the only reason it is
1057 present in tree_base instead of tree_type is to save space. The size
1058 of the field must be large enough to hold addr_space_t values. */
1059 unsigned address_space : 8;
1060 } bits;
1062 /* The following fields are present in tree_base to save space. The
1063 nodes using them do not require any of the flags above and so can
1064 make better use of the 4-byte sized word. */
1066 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
1067 struct {
1068 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1069 its native precision. */
1070 unsigned char unextended;
1072 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
1073 wider precisions based on its TYPE_SIGN. */
1074 unsigned char extended;
1076 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
1077 offset_int precision, with smaller integers being extended
1078 according to their TYPE_SIGN. This is equal to one of the two
1079 fields above but is cached for speed. */
1080 unsigned char offset;
1081 } int_length;
1083 /* VEC length. This field is only used with TREE_VEC. */
1084 int length;
1086 /* This field is only used with VECTOR_CST. */
1087 struct {
1088 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
1089 unsigned int log2_npatterns : 8;
1091 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
1092 unsigned int nelts_per_pattern : 8;
1094 /* For future expansion. */
1095 unsigned int unused : 16;
1096 } vector_cst;
1098 /* SSA version number. This field is only used with SSA_NAME. */
1099 unsigned int version;
1101 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
1102 unsigned int chrec_var;
1104 /* Internal function code. */
1105 enum internal_fn ifn;
1107 /* OMP_ATOMIC* memory order. */
1108 enum omp_memory_order omp_atomic_memory_order;
1110 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
1111 expression trees and specify known data non-dependences. For
1112 two memory references in a function they are known to not
1113 alias if dependence_info.clique are equal and dependence_info.base
1114 are distinct. Clique number zero means there is no information,
1115 clique number one is populated from function global information
1116 and thus needs no remapping on transforms like loop unrolling. */
1117 struct {
1118 unsigned short clique;
1119 unsigned short base;
1120 } dependence_info;
1121 } GTY((skip(""))) u;
1124 /* The following table lists the uses of each of the above flags and
1125 for which types of nodes they are defined.
1127 addressable_flag:
1129 TREE_ADDRESSABLE in
1130 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1131 SSA_NAME
1132 all types
1133 CONSTRUCTOR, IDENTIFIER_NODE
1134 STMT_EXPR
1136 CALL_EXPR_TAILCALL in
1137 CALL_EXPR
1139 CASE_LOW_SEEN in
1140 CASE_LABEL_EXPR
1142 PREDICT_EXPR_OUTCOME in
1143 PREDICT_EXPR
1145 static_flag:
1147 TREE_STATIC in
1148 VAR_DECL, FUNCTION_DECL
1149 CONSTRUCTOR
1151 TREE_NO_TRAMPOLINE in
1152 ADDR_EXPR
1154 BINFO_VIRTUAL_P in
1155 TREE_BINFO
1157 TREE_SYMBOL_REFERENCED in
1158 IDENTIFIER_NODE
1160 CLEANUP_EH_ONLY in
1161 TARGET_EXPR, WITH_CLEANUP_EXPR
1163 TRY_CATCH_IS_CLEANUP in
1164 TRY_CATCH_EXPR
1166 ASM_INPUT_P in
1167 ASM_EXPR
1169 TYPE_REF_CAN_ALIAS_ALL in
1170 POINTER_TYPE, REFERENCE_TYPE
1172 CASE_HIGH_SEEN in
1173 CASE_LABEL_EXPR
1175 ENUM_IS_SCOPED in
1176 ENUMERAL_TYPE
1178 TRANSACTION_EXPR_OUTER in
1179 TRANSACTION_EXPR
1181 SSA_NAME_ANTI_RANGE_P in
1182 SSA_NAME
1184 MUST_TAIL_CALL in
1185 CALL_EXPR
1187 public_flag:
1189 TREE_OVERFLOW in
1190 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1192 TREE_PUBLIC in
1193 VAR_DECL, FUNCTION_DECL
1194 IDENTIFIER_NODE
1196 CONSTRUCTOR_NO_CLEARING in
1197 CONSTRUCTOR
1199 ASM_VOLATILE_P in
1200 ASM_EXPR
1202 CALL_EXPR_VA_ARG_PACK in
1203 CALL_EXPR
1205 TYPE_CACHED_VALUES_P in
1206 all types
1208 SAVE_EXPR_RESOLVED_P in
1209 SAVE_EXPR
1211 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1212 OMP_CLAUSE_LASTPRIVATE
1214 OMP_CLAUSE_PRIVATE_DEBUG in
1215 OMP_CLAUSE_PRIVATE
1217 OMP_CLAUSE_LINEAR_NO_COPYIN in
1218 OMP_CLAUSE_LINEAR
1220 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1221 OMP_CLAUSE_MAP
1223 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1224 OMP_CLAUSE_{,TASK_,IN_}REDUCTION
1226 OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in
1227 OMP_CLAUSE_USE_DEVICE_PTR
1229 TRANSACTION_EXPR_RELAXED in
1230 TRANSACTION_EXPR
1232 FALLTHROUGH_LABEL_P in
1233 LABEL_DECL
1235 SSA_NAME_IS_VIRTUAL_OPERAND in
1236 SSA_NAME
1238 EXPR_LOCATION_WRAPPER_P in
1239 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1241 private_flag:
1243 TREE_PRIVATE in
1244 all decls
1246 CALL_EXPR_RETURN_SLOT_OPT in
1247 CALL_EXPR
1249 OMP_SECTION_LAST in
1250 OMP_SECTION
1252 OMP_PARALLEL_COMBINED in
1253 OMP_PARALLEL
1255 OMP_CLAUSE_PRIVATE_OUTER_REF in
1256 OMP_CLAUSE_PRIVATE
1258 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1259 OMP_CLAUSE_LINEAR
1261 TYPE_REF_IS_RVALUE in
1262 REFERENCE_TYPE
1264 ENUM_IS_OPAQUE in
1265 ENUMERAL_TYPE
1267 protected_flag:
1269 TREE_PROTECTED in
1270 BLOCK
1271 all decls
1273 CALL_FROM_THUNK_P and
1274 CALL_ALLOCA_FOR_VAR_P and
1275 CALL_FROM_NEW_OR_DELETE_P in
1276 CALL_EXPR
1278 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1279 OMP_CLAUSE_LINEAR
1281 ASM_INLINE_P in
1282 ASM_EXPR
1284 side_effects_flag:
1286 TREE_SIDE_EFFECTS in
1287 all expressions
1288 all decls
1289 all constants
1291 FORCED_LABEL in
1292 LABEL_DECL
1294 volatile_flag:
1296 TREE_THIS_VOLATILE in
1297 all expressions
1298 all decls
1300 TYPE_VOLATILE in
1301 all types
1303 readonly_flag:
1305 TREE_READONLY in
1306 all expressions
1307 all decls
1309 TYPE_READONLY in
1310 all types
1312 constant_flag:
1314 TREE_CONSTANT in
1315 all expressions
1316 all decls
1317 all constants
1319 TYPE_SIZES_GIMPLIFIED in
1320 all types
1322 unsigned_flag:
1324 TYPE_UNSIGNED in
1325 all types
1327 DECL_UNSIGNED in
1328 all decls
1330 asm_written_flag:
1332 TREE_ASM_WRITTEN in
1333 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1334 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1335 BLOCK, STRING_CST
1337 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1338 SSA_NAME
1340 used_flag:
1342 TREE_USED in
1343 all expressions
1344 all decls
1345 IDENTIFIER_NODE
1347 nothrow_flag:
1349 TREE_NOTHROW in
1350 CALL_EXPR
1351 FUNCTION_DECL
1353 TREE_THIS_NOTRAP in
1354 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1356 SSA_NAME_IN_FREE_LIST in
1357 SSA_NAME
1359 DECL_NONALIASED in
1360 VAR_DECL
1362 deprecated_flag:
1364 TREE_DEPRECATED in
1365 all decls
1366 all types
1368 IDENTIFIER_TRANSPARENT_ALIAS in
1369 IDENTIFIER_NODE
1371 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1372 SSA_NAME
1374 unavailable_flag:
1376 TREE_UNAVAILABLE in
1377 all decls
1378 all types
1380 visited:
1382 TREE_VISITED in
1383 all trees (used liberally by many passes)
1385 saturating_flag:
1387 TYPE_REVERSE_STORAGE_ORDER in
1388 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1390 TYPE_SATURATING in
1391 other types
1393 VAR_DECL_IS_VIRTUAL_OPERAND in
1394 VAR_DECL
1396 nowarning_flag:
1398 TREE_NO_WARNING in
1399 all expressions
1400 all decls
1402 TYPE_ARTIFICIAL in
1403 all types
1405 default_def_flag:
1407 TYPE_FINAL_P in
1408 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1410 TYPE_VECTOR_OPAQUE in
1411 VECTOR_TYPE
1413 SSA_NAME_IS_DEFAULT_DEF in
1414 SSA_NAME
1416 DECL_NONLOCAL_FRAME in
1417 VAR_DECL
1419 REF_REVERSE_STORAGE_ORDER in
1420 BIT_FIELD_REF, MEM_REF
1422 FUNC_ADDR_BY_DESCRIPTOR in
1423 ADDR_EXPR
1425 CALL_EXPR_BY_DESCRIPTOR in
1426 CALL_EXPR
1430 struct GTY(()) tree_typed {
1431 struct tree_base base;
1432 tree type;
1435 struct GTY(()) tree_common {
1436 struct tree_typed typed;
1437 tree chain;
1440 struct GTY(()) tree_int_cst {
1441 struct tree_typed typed;
1442 HOST_WIDE_INT val[1];
1446 struct GTY(()) tree_real_cst {
1447 struct tree_typed typed;
1448 struct real_value * real_cst_ptr;
1451 struct GTY(()) tree_fixed_cst {
1452 struct tree_typed typed;
1453 struct fixed_value * fixed_cst_ptr;
1456 struct GTY(()) tree_string {
1457 struct tree_typed typed;
1458 int length;
1459 char str[1];
1462 struct GTY(()) tree_complex {
1463 struct tree_typed typed;
1464 tree real;
1465 tree imag;
1468 struct GTY(()) tree_vector {
1469 struct tree_typed typed;
1470 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1];
1473 struct GTY(()) tree_poly_int_cst {
1474 struct tree_typed typed;
1475 tree coeffs[NUM_POLY_INT_COEFFS];
1478 struct GTY(()) tree_identifier {
1479 struct tree_common common;
1480 struct ht_identifier id;
1483 struct GTY(()) tree_list {
1484 struct tree_common common;
1485 tree purpose;
1486 tree value;
1489 struct GTY(()) tree_vec {
1490 struct tree_common common;
1491 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1494 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1495 element. INDEX can optionally design the position of VALUE: in arrays,
1496 it is the index where VALUE has to be placed; in structures, it is the
1497 FIELD_DECL of the member. */
1498 struct GTY(()) constructor_elt {
1499 tree index;
1500 tree value;
1503 struct GTY(()) tree_constructor {
1504 struct tree_typed typed;
1505 vec<constructor_elt, va_gc> *elts;
1508 enum omp_clause_depend_kind
1510 OMP_CLAUSE_DEPEND_IN,
1511 OMP_CLAUSE_DEPEND_OUT,
1512 OMP_CLAUSE_DEPEND_INOUT,
1513 OMP_CLAUSE_DEPEND_MUTEXINOUTSET,
1514 OMP_CLAUSE_DEPEND_SOURCE,
1515 OMP_CLAUSE_DEPEND_SINK,
1516 OMP_CLAUSE_DEPEND_DEPOBJ,
1517 OMP_CLAUSE_DEPEND_LAST
1520 enum omp_clause_proc_bind_kind
1522 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1523 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1524 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1525 OMP_CLAUSE_PROC_BIND_PRIMARY = 2,
1526 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1527 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1528 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1529 OMP_CLAUSE_PROC_BIND_LAST
1532 enum omp_clause_device_type_kind
1534 OMP_CLAUSE_DEVICE_TYPE_HOST = 1,
1535 OMP_CLAUSE_DEVICE_TYPE_NOHOST = 2,
1536 OMP_CLAUSE_DEVICE_TYPE_ANY = 3
1539 enum omp_clause_linear_kind
1541 OMP_CLAUSE_LINEAR_DEFAULT,
1542 OMP_CLAUSE_LINEAR_REF,
1543 OMP_CLAUSE_LINEAR_VAL,
1544 OMP_CLAUSE_LINEAR_UVAL
1547 struct GTY(()) tree_exp {
1548 struct tree_typed typed;
1549 location_t locus;
1550 tree GTY ((special ("tree_exp"),
1551 desc ("TREE_CODE ((tree) &%0)")))
1552 operands[1];
1555 /* Immediate use linking structure. This structure is used for maintaining
1556 a doubly linked list of uses of an SSA_NAME. */
1557 struct GTY(()) ssa_use_operand_t {
1558 struct ssa_use_operand_t* GTY((skip(""))) prev;
1559 struct ssa_use_operand_t* GTY((skip(""))) next;
1560 /* Immediate uses for a given SSA name are maintained as a cyclic
1561 list. To recognize the root of this list, the location field
1562 needs to point to the original SSA name. Since statements and
1563 SSA names are of different data types, we need this union. See
1564 the explanation in struct imm_use_iterator. */
1565 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1566 tree *GTY((skip(""))) use;
1569 struct GTY(()) tree_ssa_name {
1570 struct tree_typed typed;
1572 /* _DECL wrapped by this SSA name. */
1573 tree var;
1575 /* Statement that defines this SSA name. */
1576 gimple *def_stmt;
1578 /* Value range information. */
1579 union ssa_name_info_type {
1580 /* Pointer attributes used for alias analysis. */
1581 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1582 /* Value range attributes used for zero/sign extension elimination. */
1583 struct GTY ((tag ("1"))) range_info_def *range_info;
1584 } GTY ((desc ("%1.typed.type ?" \
1585 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1587 /* Immediate uses list for this SSA_NAME. */
1588 struct ssa_use_operand_t imm_uses;
1591 struct GTY(()) phi_arg_d {
1592 /* imm_use MUST be the first element in struct because we do some
1593 pointer arithmetic with it. See phi_arg_index_from_use. */
1594 struct ssa_use_operand_t imm_use;
1595 tree def;
1596 location_t locus;
1599 struct GTY(()) tree_omp_clause {
1600 struct tree_common common;
1601 location_t locus;
1602 enum omp_clause_code code;
1603 union omp_clause_subcode {
1604 enum omp_clause_default_kind default_kind;
1605 enum omp_clause_schedule_kind schedule_kind;
1606 enum omp_clause_depend_kind depend_kind;
1607 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1608 unsigned int map_kind;
1609 enum omp_clause_proc_bind_kind proc_bind_kind;
1610 enum tree_code reduction_code;
1611 enum omp_clause_linear_kind linear_kind;
1612 enum tree_code if_modifier;
1613 enum omp_clause_defaultmap_kind defaultmap_kind;
1614 enum omp_clause_bind_kind bind_kind;
1615 enum omp_clause_device_type_kind device_type_kind;
1616 } GTY ((skip)) subcode;
1618 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1619 usage. */
1620 gimple_seq gimple_reduction_init;
1621 gimple_seq gimple_reduction_merge;
1623 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1624 ops[1];
1627 struct GTY(()) tree_block {
1628 struct tree_base base;
1629 tree chain;
1631 unsigned block_num;
1633 location_t locus;
1634 location_t end_locus;
1636 tree vars;
1637 vec<tree, va_gc> *nonlocalized_vars;
1639 tree subblocks;
1640 tree supercontext;
1641 tree abstract_origin;
1642 tree fragment_origin;
1643 tree fragment_chain;
1645 /* Pointer to the DWARF lexical block. */
1646 struct die_struct *die;
1649 struct GTY(()) tree_type_common {
1650 struct tree_common common;
1651 tree size;
1652 tree size_unit;
1653 tree attributes;
1654 unsigned int uid;
1656 unsigned int precision : 10;
1657 unsigned no_force_blk_flag : 1;
1658 unsigned needs_constructing_flag : 1;
1659 unsigned transparent_aggr_flag : 1;
1660 unsigned restrict_flag : 1;
1661 unsigned contains_placeholder_bits : 2;
1663 ENUM_BITFIELD(machine_mode) mode : 8;
1665 /* TYPE_STRING_FLAG for INTEGER_TYPE and ARRAY_TYPE.
1666 TYPE_CXX_ODR_P for RECORD_TYPE and UNION_TYPE. */
1667 unsigned string_flag : 1;
1668 unsigned lang_flag_0 : 1;
1669 unsigned lang_flag_1 : 1;
1670 unsigned lang_flag_2 : 1;
1671 unsigned lang_flag_3 : 1;
1672 unsigned lang_flag_4 : 1;
1673 unsigned lang_flag_5 : 1;
1674 unsigned lang_flag_6 : 1;
1675 unsigned lang_flag_7 : 1;
1677 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1678 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1679 the latter being usually the larger. For ELF it is 8<<28,
1680 so we need to store the value 32 (not 31, as we need the zero
1681 as well), hence six bits. */
1682 unsigned align : 6;
1683 unsigned warn_if_not_align : 6;
1684 unsigned typeless_storage : 1;
1685 unsigned empty_flag : 1;
1686 unsigned indivisible_p : 1;
1687 unsigned spare : 16;
1689 alias_set_type alias_set;
1690 tree pointer_to;
1691 tree reference_to;
1692 union tree_type_symtab {
1693 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1694 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1695 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1696 tree canonical;
1697 tree next_variant;
1698 tree main_variant;
1699 tree context;
1700 tree name;
1703 struct GTY(()) tree_type_with_lang_specific {
1704 struct tree_type_common common;
1705 /* Points to a structure whose details depend on the language in use. */
1706 struct lang_type *lang_specific;
1709 struct GTY(()) tree_type_non_common {
1710 struct tree_type_with_lang_specific with_lang_specific;
1711 tree values;
1712 tree minval;
1713 tree maxval;
1714 tree lang_1;
1717 struct GTY (()) tree_binfo {
1718 struct tree_common common;
1720 tree offset;
1721 tree vtable;
1722 tree virtuals;
1723 tree vptr_field;
1724 vec<tree, va_gc> *base_accesses;
1725 tree inheritance;
1727 tree vtt_subvtt;
1728 tree vtt_vptr;
1730 vec<tree, va_gc> base_binfos;
1733 struct GTY(()) tree_decl_minimal {
1734 struct tree_common common;
1735 location_t locus;
1736 unsigned int uid;
1737 tree name;
1738 tree context;
1741 struct GTY(()) tree_decl_common {
1742 struct tree_decl_minimal common;
1743 tree size;
1745 ENUM_BITFIELD(machine_mode) mode : 8;
1747 unsigned nonlocal_flag : 1;
1748 unsigned virtual_flag : 1;
1749 unsigned ignored_flag : 1;
1750 unsigned abstract_flag : 1;
1751 unsigned artificial_flag : 1;
1752 unsigned preserve_flag: 1;
1753 unsigned debug_expr_is_from : 1;
1755 unsigned lang_flag_0 : 1;
1756 unsigned lang_flag_1 : 1;
1757 unsigned lang_flag_2 : 1;
1758 unsigned lang_flag_3 : 1;
1759 unsigned lang_flag_4 : 1;
1760 unsigned lang_flag_5 : 1;
1761 unsigned lang_flag_6 : 1;
1762 unsigned lang_flag_7 : 1;
1763 unsigned lang_flag_8 : 1;
1765 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1766 In TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P.
1767 In FIELD_DECL, this is DECL_FIELD_ABI_IGNORED. */
1768 unsigned decl_flag_0 : 1;
1769 /* In FIELD_DECL, this is DECL_BIT_FIELD
1770 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1771 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1772 unsigned decl_flag_1 : 1;
1773 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1774 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1775 DECL_HAS_VALUE_EXPR_P. */
1776 unsigned decl_flag_2 : 1;
1777 /* In FIELD_DECL, this is DECL_PADDING_P. */
1778 unsigned decl_flag_3 : 1;
1779 /* Logically, these two would go in a theoretical base shared by var and
1780 parm decl. */
1781 unsigned not_gimple_reg_flag : 1;
1782 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1783 unsigned decl_by_reference_flag : 1;
1784 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1785 unsigned decl_read_flag : 1;
1786 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1787 /* In a PARM_DECL, this is DECL_HIDDEN_STRING_LENGTH. */
1788 unsigned decl_nonshareable_flag : 1;
1790 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1791 unsigned int off_align : 6;
1793 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1794 unsigned int align : 6;
1796 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1797 TYPE_WARN_IF_NOT_ALIGN. */
1798 unsigned int warn_if_not_align : 6;
1800 /* 14 bits unused. */
1802 /* UID for points-to sets, stable over copying from inlining. */
1803 unsigned int pt_uid;
1805 tree size_unit;
1806 tree initial;
1807 tree attributes;
1808 tree abstract_origin;
1810 /* Points to a structure whose details depend on the language in use. */
1811 struct lang_decl *lang_specific;
1814 struct GTY(()) tree_decl_with_rtl {
1815 struct tree_decl_common common;
1816 rtx rtl;
1819 struct GTY(()) tree_field_decl {
1820 struct tree_decl_common common;
1822 tree offset;
1823 tree bit_field_type;
1824 tree qualifier;
1825 tree bit_offset;
1826 tree fcontext;
1829 struct GTY(()) tree_label_decl {
1830 struct tree_decl_with_rtl common;
1831 int label_decl_uid;
1832 int eh_landing_pad_nr;
1835 struct GTY(()) tree_result_decl {
1836 struct tree_decl_with_rtl common;
1839 struct GTY(()) tree_const_decl {
1840 struct tree_decl_common common;
1843 struct GTY(()) tree_parm_decl {
1844 struct tree_decl_with_rtl common;
1845 rtx incoming_rtl;
1848 struct GTY(()) tree_decl_with_vis {
1849 struct tree_decl_with_rtl common;
1850 tree assembler_name;
1851 struct symtab_node *symtab_node;
1853 /* Belong to VAR_DECL exclusively. */
1854 unsigned defer_output : 1;
1855 unsigned hard_register : 1;
1856 unsigned common_flag : 1;
1857 unsigned in_text_section : 1;
1858 unsigned in_constant_pool : 1;
1859 unsigned dllimport_flag : 1;
1860 /* Don't belong to VAR_DECL exclusively. */
1861 unsigned weak_flag : 1;
1863 unsigned seen_in_bind_expr : 1;
1864 unsigned comdat_flag : 1;
1865 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1866 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1867 unsigned visibility_specified : 1;
1869 /* Belong to FUNCTION_DECL exclusively. */
1870 unsigned init_priority_p : 1;
1871 /* Used by C++ only. Might become a generic decl flag. */
1872 unsigned shadowed_for_var_p : 1;
1873 /* Belong to FUNCTION_DECL exclusively. */
1874 unsigned cxx_constructor : 1;
1875 /* Belong to FUNCTION_DECL exclusively. */
1876 unsigned cxx_destructor : 1;
1877 /* Belong to FUNCTION_DECL exclusively. */
1878 unsigned final : 1;
1879 /* Belong to FUNCTION_DECL exclusively. */
1880 unsigned regdecl_flag : 1;
1881 /* 14 unused bits. */
1882 /* 32 more unused on 64 bit HW. */
1885 struct GTY(()) tree_var_decl {
1886 struct tree_decl_with_vis common;
1889 struct GTY(()) tree_decl_non_common {
1890 struct tree_decl_with_vis common;
1891 /* Almost all FE's use this. */
1892 tree result;
1895 /* Classify a special function declaration type. */
1897 enum function_decl_type
1899 NONE,
1900 OPERATOR_NEW,
1901 OPERATOR_DELETE,
1902 LAMBDA_FUNCTION
1904 /* 0 values left */
1907 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1908 arguments/result/saved_tree fields by front ends. It was either inherit
1909 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1910 which seemed a bit strange. */
1912 struct GTY(()) tree_function_decl {
1913 struct tree_decl_non_common common;
1915 struct function *f;
1917 /* Arguments of the function. */
1918 tree arguments;
1919 /* The personality function. Used for stack unwinding. */
1920 tree personality;
1922 /* Function specific options that are used by this function. */
1923 tree function_specific_target; /* target options */
1924 tree function_specific_optimization; /* optimization options */
1926 /* Generic function body. */
1927 tree saved_tree;
1928 /* Index within a virtual table. */
1929 tree vindex;
1931 /* In a FUNCTION_DECL this is DECL_UNCHECKED_FUNCTION_CODE. */
1932 unsigned int function_code;
1934 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1935 unsigned static_ctor_flag : 1;
1936 unsigned static_dtor_flag : 1;
1937 unsigned uninlinable : 1;
1938 unsigned possibly_inlined : 1;
1939 unsigned novops_flag : 1;
1940 unsigned returns_twice_flag : 1;
1942 unsigned malloc_flag : 1;
1943 unsigned declared_inline_flag : 1;
1944 unsigned no_inline_warning_flag : 1;
1945 unsigned no_instrument_function_entry_exit : 1;
1946 unsigned no_limit_stack : 1;
1947 unsigned disregard_inline_limits : 1;
1948 unsigned pure_flag : 1;
1949 unsigned looping_const_or_pure_flag : 1;
1951 /* Align the bitfield to boundary of a byte. */
1952 ENUM_BITFIELD(function_decl_type) decl_type: 2;
1953 unsigned has_debug_args_flag : 1;
1954 unsigned versioned_function : 1;
1955 unsigned replaceable_operator : 1;
1957 /* 11 bits left for future expansion. */
1958 /* 32 bits on 64-bit HW. */
1961 struct GTY(()) tree_translation_unit_decl {
1962 struct tree_decl_common common;
1963 /* Source language of this translation unit. Used for DWARF output. */
1964 const char * GTY((skip(""))) language;
1965 /* TODO: Non-optimization used to build this translation unit. */
1966 /* TODO: Root of a partial DWARF tree for global types and decls. */
1969 struct GTY(()) tree_type_decl {
1970 struct tree_decl_non_common common;
1974 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1976 struct tree_statement_list_node *prev;
1977 struct tree_statement_list_node *next;
1978 tree stmt;
1981 struct GTY(()) tree_statement_list
1983 struct tree_typed typed;
1984 struct tree_statement_list_node *head;
1985 struct tree_statement_list_node *tail;
1989 /* Optimization options used by a function. */
1991 struct GTY(()) tree_optimization_option {
1992 struct tree_base base;
1994 /* The optimization options used by the user. */
1995 struct cl_optimization *opts;
1997 /* Target optabs for this set of optimization options. This is of
1998 type `struct target_optabs *'. */
1999 void *GTY ((atomic)) optabs;
2001 /* The value of this_target_optabs against which the optabs above were
2002 generated. */
2003 struct target_optabs *GTY ((skip)) base_optabs;
2006 /* Forward declaration, defined in target-globals.h. */
2008 class GTY(()) target_globals;
2010 /* Target options used by a function. */
2012 struct GTY(()) tree_target_option {
2013 struct tree_base base;
2015 /* Target globals for the corresponding target option. */
2016 class target_globals *globals;
2018 /* The optimization options used by the user. */
2019 struct cl_target_option *opts;
2022 /* Define the overall contents of a tree node.
2023 It may be any of the structures declared above
2024 for various types of node. */
2025 union GTY ((ptr_alias (union lang_tree_node),
2026 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
2027 struct tree_base GTY ((tag ("TS_BASE"))) base;
2028 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
2029 struct tree_common GTY ((tag ("TS_COMMON"))) common;
2030 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
2031 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst;
2032 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
2033 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
2034 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
2035 struct tree_string GTY ((tag ("TS_STRING"))) string;
2036 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
2037 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
2038 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
2039 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
2040 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
2041 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
2042 decl_non_common;
2043 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
2044 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
2045 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
2046 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
2047 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
2048 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
2049 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
2050 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
2051 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
2052 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
2053 translation_unit_decl;
2054 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
2055 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
2056 type_with_lang_specific;
2057 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
2058 type_non_common;
2059 struct tree_list GTY ((tag ("TS_LIST"))) list;
2060 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
2061 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
2062 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
2063 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
2064 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
2065 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
2066 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
2067 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
2068 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
2069 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
2072 /* Structure describing an attribute and a function to handle it. */
2073 struct attribute_spec {
2074 /* The name of the attribute (without any leading or trailing __),
2075 or NULL to mark the end of a table of attributes. */
2076 const char *name;
2077 /* The minimum length of the list of arguments of the attribute. */
2078 int min_length;
2079 /* The maximum length of the list of arguments of the attribute
2080 (-1 for no maximum). */
2081 int max_length;
2082 /* Whether this attribute requires a DECL. If it does, it will be passed
2083 from types of DECLs, function return types and array element types to
2084 the DECLs, function types and array types respectively; but when
2085 applied to a type in any other circumstances, it will be ignored with
2086 a warning. (If greater control is desired for a given attribute,
2087 this should be false, and the flags argument to the handler may be
2088 used to gain greater control in that case.) */
2089 bool decl_required;
2090 /* Whether this attribute requires a type. If it does, it will be passed
2091 from a DECL to the type of that DECL. */
2092 bool type_required;
2093 /* Whether this attribute requires a function (or method) type. If it does,
2094 it will be passed from a function pointer type to the target type,
2095 and from a function return type (which is not itself a function
2096 pointer type) to the function type. */
2097 bool function_type_required;
2098 /* Specifies if attribute affects type's identity. */
2099 bool affects_type_identity;
2100 /* Function to handle this attribute. NODE points to the node to which
2101 the attribute is to be applied. If a DECL, it should be modified in
2102 place; if a TYPE, a copy should be created. NAME is the canonicalized
2103 name of the attribute i.e. without any leading or trailing underscores.
2104 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
2105 further information about the context of the attribute. Afterwards, the
2106 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
2107 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
2108 error, as well as in any other cases when the attributes should not be
2109 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
2110 applied to another type or DECL later may be returned;
2111 otherwise the return value should be NULL_TREE. This pointer may be
2112 NULL if no special handling is required beyond the checks implied
2113 by the rest of this structure. */
2114 tree (*handler) (tree *node, tree name, tree args,
2115 int flags, bool *no_add_attrs);
2117 /* Specifies the name of an attribute that's mutually exclusive with
2118 this one, and whether the relationship applies to the function,
2119 variable, or type form of the attribute. */
2120 struct exclusions {
2121 const char *name;
2122 bool function;
2123 bool variable;
2124 bool type;
2127 /* An array of attribute exclusions describing names of other attributes
2128 that this attribute is mutually exclusive with. */
2129 const exclusions *exclude;
2132 /* These functions allow a front-end to perform a manual layout of a
2133 RECORD_TYPE. (For instance, if the placement of subsequent fields
2134 depends on the placement of fields so far.) Begin by calling
2135 start_record_layout. Then, call place_field for each of the
2136 fields. Then, call finish_record_layout. See layout_type for the
2137 default way in which these functions are used. */
2138 typedef struct record_layout_info_s {
2139 /* The RECORD_TYPE that we are laying out. */
2140 tree t;
2141 /* The offset into the record so far, in bytes, not including bits in
2142 BITPOS. */
2143 tree offset;
2144 /* The last known alignment of SIZE. */
2145 unsigned int offset_align;
2146 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
2147 tree bitpos;
2148 /* The alignment of the record so far, in bits. */
2149 unsigned int record_align;
2150 /* The alignment of the record so far, ignoring #pragma pack and
2151 __attribute__ ((packed)), in bits. */
2152 unsigned int unpacked_align;
2153 /* The previous field laid out. */
2154 tree prev_field;
2155 /* The static variables (i.e., class variables, as opposed to
2156 instance variables) encountered in T. */
2157 vec<tree, va_gc> *pending_statics;
2158 /* Bits remaining in the current alignment group */
2159 int remaining_in_alignment;
2160 /* True if we've seen a packed field that didn't have normal
2161 alignment anyway. */
2162 int packed_maybe_necessary;
2163 } *record_layout_info;
2165 /* Iterator for going through the function arguments. */
2166 struct function_args_iterator {
2167 tree next; /* TREE_LIST pointing to the next argument */
2170 /* Structures to map from a tree to another tree. */
2171 struct GTY(()) tree_map_base {
2172 tree from;
2175 /* Map from a tree to another tree. */
2177 struct GTY((for_user)) tree_map {
2178 struct tree_map_base base;
2179 unsigned int hash;
2180 tree to;
2183 /* Map from a decl tree to another tree. */
2184 struct GTY((for_user)) tree_decl_map {
2185 struct tree_map_base base;
2186 tree to;
2189 /* Map from a tree to an int. */
2190 struct GTY((for_user)) tree_int_map {
2191 struct tree_map_base base;
2192 unsigned int to;
2195 /* Map from a decl tree to a tree vector. */
2196 struct GTY((for_user)) tree_vec_map {
2197 struct tree_map_base base;
2198 vec<tree, va_gc> *to;
2201 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2202 have to go towards the end of tree.h so that union tree_node is fully
2203 defined by this point. */
2205 /* Structure containing iterator state. */
2206 struct call_expr_arg_iterator {
2207 tree t; /* the call_expr */
2208 int n; /* argument count */
2209 int i; /* next argument index */
2212 struct const_call_expr_arg_iterator {
2213 const_tree t; /* the call_expr */
2214 int n; /* argument count */
2215 int i; /* next argument index */
2218 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2219 function, and flags. */
2220 struct GTY(()) builtin_info_type {
2221 tree decl;
2222 /* Whether the user can use <xxx> instead of explicitly using calls
2223 to __builtin_<xxx>. */
2224 unsigned implicit_p : 1;
2225 /* Whether the user has provided a declaration of <xxx>. */
2226 unsigned declared_p : 1;
2229 /* Information about a _FloatN or _FloatNx type that may be
2230 supported. */
2231 struct floatn_type_info {
2232 /* The number N in the type name. */
2233 int n;
2234 /* Whether it is an extended type _FloatNx (true) or an interchange
2235 type (false). */
2236 bool extended;
2240 /*---------------------------------------------------------------------------
2241 Global variables
2242 ---------------------------------------------------------------------------*/
2243 /* Matrix describing the structures contained in a given tree code. */
2244 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2246 /* Class of tree given its code. */
2247 extern const enum tree_code_class tree_code_type[];
2249 /* Each tree code class has an associated string representation.
2250 These must correspond to the tree_code_class entries. */
2251 extern const char *const tree_code_class_strings[];
2253 /* Number of argument-words in each kind of tree-node. */
2254 extern const unsigned char tree_code_length[];
2256 /* Vector of all alias pairs for global symbols. */
2257 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2259 /* Names of all the built_in classes. */
2260 extern const char *const built_in_class_names[BUILT_IN_LAST];
2262 /* Names of all the built_in functions. */
2263 extern const char * built_in_names[(int) END_BUILTINS];
2265 /* Number of operands and names for each OMP_CLAUSE node. */
2266 extern unsigned const char omp_clause_num_ops[];
2267 extern const char * const omp_clause_code_name[];
2269 /* A vector of all translation-units. */
2270 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2272 /* Vector of standard trees used by the C compiler. */
2273 extern GTY(()) tree global_trees[TI_MAX];
2275 /* The standard C integer types. Use integer_type_kind to index into
2276 this array. */
2277 extern GTY(()) tree integer_types[itk_none];
2279 /* Types used to represent sizes. */
2280 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2282 /* Arrays for keeping track of tree node statistics. */
2283 extern uint64_t tree_node_counts[];
2284 extern uint64_t tree_node_sizes[];
2286 /* True if we are in gimple form and the actions of the folders need to
2287 be restricted. False if we are not in gimple form and folding is not
2288 restricted to creating gimple expressions. */
2289 extern bool in_gimple_form;
2291 /* Functional interface to the builtin functions. */
2292 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2294 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2295 extern unsigned int maximum_field_alignment;
2297 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2298 extern GTY(()) tree current_function_decl;
2300 /* Nonzero means a FUNC_BEGIN label was emitted. */
2301 extern GTY(()) const char * current_function_func_begin_label;
2303 /* Information about the _FloatN and _FloatNx types. */
2304 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2306 #endif // GCC_TREE_CORE_H