* varasm.c (output_constructor_regular_field): Check TYPE_SIZE_UNIT of
[official-gcc.git] / gcc / tree-core.h
blobdee27f89dec8ebff3bceba5efe5d262f05223760
1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2018 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 #ifndef GCC_TREE_CORE_H
21 #define GCC_TREE_CORE_H
23 #include "symtab.h"
25 /* This file contains all the data structures that define the 'tree' type.
26 There are no accessor macros nor functions in this file. Only the
27 basic data structures, extern declarations and type definitions. */
29 /*---------------------------------------------------------------------------
30 Forward type declarations. Mostly to avoid including unnecessary headers
31 ---------------------------------------------------------------------------*/
32 struct function;
33 struct real_value;
34 struct fixed_value;
35 struct ptr_info_def;
36 struct range_info_def;
37 struct die_struct;
40 /*---------------------------------------------------------------------------
41 #defined constants
42 ---------------------------------------------------------------------------*/
43 /* Nonzero if this is a call to a function whose return value depends
44 solely on its arguments, has no side effects, and does not read
45 global memory. This corresponds to TREE_READONLY for function
46 decls. */
47 #define ECF_CONST (1 << 0)
49 /* Nonzero if this is a call to "pure" function (like const function,
50 but may read memory. This corresponds to DECL_PURE_P for function
51 decls. */
52 #define ECF_PURE (1 << 1)
54 /* Nonzero if this is ECF_CONST or ECF_PURE but cannot be proven to no
55 infinite loop. This corresponds to DECL_LOOPING_CONST_OR_PURE_P
56 for function decls.*/
57 #define ECF_LOOPING_CONST_OR_PURE (1 << 2)
59 /* Nonzero if this call will never return. */
60 #define ECF_NORETURN (1 << 3)
62 /* Nonzero if this is a call to malloc or a related function. */
63 #define ECF_MALLOC (1 << 4)
65 /* Nonzero if it is plausible that this is a call to alloca. */
66 #define ECF_MAY_BE_ALLOCA (1 << 5)
68 /* Nonzero if this is a call to a function that won't throw an exception. */
69 #define ECF_NOTHROW (1 << 6)
71 /* Nonzero if this is a call to setjmp or a related function. */
72 #define ECF_RETURNS_TWICE (1 << 7)
74 /* Nonzero if this call replaces the current stack frame. */
75 #define ECF_SIBCALL (1 << 8)
77 /* Function does not read or write memory (but may have side effects, so
78 it does not necessarily fit ECF_CONST). */
79 #define ECF_NOVOPS (1 << 9)
81 /* The function does not lead to calls within current function unit. */
82 #define ECF_LEAF (1 << 10)
84 /* Nonzero if this call returns its first argument. */
85 #define ECF_RET1 (1 << 11)
87 /* Nonzero if this call does not affect transactions. */
88 #define ECF_TM_PURE (1 << 12)
90 /* Nonzero if this call is into the transaction runtime library. */
91 #define ECF_TM_BUILTIN (1 << 13)
93 /* Nonzero if this is an indirect call by descriptor. */
94 #define ECF_BY_DESCRIPTOR (1 << 14)
96 /* Nonzero if this is a cold function. */
97 #define ECF_COLD (1 << 15)
99 /* Call argument flags. */
100 /* Nonzero if the argument is not dereferenced recursively, thus only
101 directly reachable memory is read or written. */
102 #define EAF_DIRECT (1 << 0)
104 /* Nonzero if memory reached by the argument is not clobbered. */
105 #define EAF_NOCLOBBER (1 << 1)
107 /* Nonzero if the argument does not escape. */
108 #define EAF_NOESCAPE (1 << 2)
110 /* Nonzero if the argument is not used by the function. */
111 #define EAF_UNUSED (1 << 3)
113 /* Call return flags. */
114 /* Mask for the argument number that is returned. Lower two bits of
115 the return flags, encodes argument slots zero to three. */
116 #define ERF_RETURN_ARG_MASK (3)
118 /* Nonzero if the return value is equal to the argument number
119 flags & ERF_RETURN_ARG_MASK. */
120 #define ERF_RETURNS_ARG (1 << 2)
122 /* Nonzero if the return value does not alias with anything. Functions
123 with the malloc attribute have this set on their return value. */
124 #define ERF_NOALIAS (1 << 3)
127 /*---------------------------------------------------------------------------
128 Enumerations
129 ---------------------------------------------------------------------------*/
130 /* Codes of tree nodes. */
131 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
132 #define END_OF_BASE_TREE_CODES LAST_AND_UNUSED_TREE_CODE,
134 enum tree_code {
135 #include "all-tree.def"
136 MAX_TREE_CODES
139 #undef DEFTREECODE
140 #undef END_OF_BASE_TREE_CODES
142 /* Number of language-independent tree codes. */
143 #define NUM_TREE_CODES \
144 ((int) LAST_AND_UNUSED_TREE_CODE)
146 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
147 (tree_contains_struct[(CODE)][(STRUCT)])
150 /* Classify which part of the compiler has defined a given builtin function.
151 Note that we assume below that this is no more than two bits. */
152 enum built_in_class {
153 NOT_BUILT_IN = 0,
154 BUILT_IN_FRONTEND,
155 BUILT_IN_MD,
156 BUILT_IN_NORMAL
159 /* Last marker used for LTO stremaing of built_in_class. We can not add it
160 to the enum since we need the enumb to fit in 2 bits. */
161 #define BUILT_IN_LAST (BUILT_IN_NORMAL + 1)
163 /* Codes that identify the various built in functions
164 so that expand_call can identify them quickly. */
165 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
166 enum built_in_function {
167 #include "builtins.def"
168 /* Complex division routines in libgcc. These are done via builtins
169 because emit_library_call_value can't handle complex values. */
170 BUILT_IN_COMPLEX_MUL_MIN,
171 BUILT_IN_COMPLEX_MUL_MAX
172 = BUILT_IN_COMPLEX_MUL_MIN
173 + MAX_MODE_COMPLEX_FLOAT
174 - MIN_MODE_COMPLEX_FLOAT,
176 BUILT_IN_COMPLEX_DIV_MIN,
177 BUILT_IN_COMPLEX_DIV_MAX
178 = BUILT_IN_COMPLEX_DIV_MIN
179 + MAX_MODE_COMPLEX_FLOAT
180 - MIN_MODE_COMPLEX_FLOAT,
182 /* Upper bound on non-language-specific builtins. */
183 END_BUILTINS
186 /* Internal functions. */
187 enum internal_fn {
188 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
189 #include "internal-fn.def"
190 IFN_LAST
193 /* An enum that combines target-independent built-in functions with
194 internal functions, so that they can be treated in a similar way.
195 The numbers for built-in functions are the same as for the
196 built_in_function enum. The numbers for internal functions
197 start at END_BUITLINS. */
198 enum combined_fn {
199 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
200 CFN_##ENUM = int (ENUM),
201 #include "builtins.def"
204 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
205 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
206 #include "internal-fn.def"
208 CFN_LAST
211 /* Tree code classes. Each tree_code has an associated code class
212 represented by a TREE_CODE_CLASS. */
213 enum tree_code_class {
214 tcc_exceptional, /* An exceptional code (fits no category). */
215 tcc_constant, /* A constant. */
216 /* Order of tcc_type and tcc_declaration is important. */
217 tcc_type, /* A type object code. */
218 tcc_declaration, /* A declaration (also serving as variable refs). */
219 tcc_reference, /* A reference to storage. */
220 tcc_comparison, /* A comparison expression. */
221 tcc_unary, /* A unary arithmetic expression. */
222 tcc_binary, /* A binary arithmetic expression. */
223 tcc_statement, /* A statement expression, which have side effects
224 but usually no interesting value. */
225 tcc_vl_exp, /* A function call or other expression with a
226 variable-length operand vector. */
227 tcc_expression /* Any other expression. */
230 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
231 the tables omp_clause_num_ops and omp_clause_code_name. */
232 enum omp_clause_code {
233 /* Clause zero is special-cased inside the parser
234 (c_parser_omp_variable_list). */
235 OMP_CLAUSE_ERROR = 0,
237 /* OpenACC/OpenMP clause: private (variable_list). */
238 OMP_CLAUSE_PRIVATE,
240 /* OpenMP clause: shared (variable_list). */
241 OMP_CLAUSE_SHARED,
243 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
244 OMP_CLAUSE_FIRSTPRIVATE,
246 /* OpenMP clause: lastprivate (variable_list). */
247 OMP_CLAUSE_LASTPRIVATE,
249 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
250 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
251 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
252 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
253 into the shared one.
254 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
255 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
256 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
257 VAR_DECL placeholder, used like the above for C/C++ array
258 reductions. */
259 OMP_CLAUSE_REDUCTION,
261 /* OpenMP clause: copyin (variable_list). */
262 OMP_CLAUSE_COPYIN,
264 /* OpenMP clause: copyprivate (variable_list). */
265 OMP_CLAUSE_COPYPRIVATE,
267 /* OpenMP clause: linear (variable-list[:linear-step]). */
268 OMP_CLAUSE_LINEAR,
270 /* OpenMP clause: aligned (variable-list[:alignment]). */
271 OMP_CLAUSE_ALIGNED,
273 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
274 OMP_CLAUSE_DEPEND,
276 /* OpenMP clause: uniform (argument-list). */
277 OMP_CLAUSE_UNIFORM,
279 /* OpenMP clause: to (extended-list).
280 Only when it appears in declare target. */
281 OMP_CLAUSE_TO_DECLARE,
283 /* OpenMP clause: link (variable-list). */
284 OMP_CLAUSE_LINK,
286 /* OpenMP clause: from (variable-list). */
287 OMP_CLAUSE_FROM,
289 /* OpenMP clause: to (variable-list). */
290 OMP_CLAUSE_TO,
292 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
293 device, host (self), present, present_or_copy (pcopy), present_or_copyin
294 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
295 (variable-list).
297 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
298 OMP_CLAUSE_MAP,
300 /* OpenACC clause: use_device (variable_list).
301 OpenMP clause: use_device_ptr (variable-list). */
302 OMP_CLAUSE_USE_DEVICE_PTR,
304 /* OpenMP clause: is_device_ptr (variable-list). */
305 OMP_CLAUSE_IS_DEVICE_PTR,
307 /* Internal structure to hold OpenACC cache directive's variable-list.
308 #pragma acc cache (variable-list). */
309 OMP_CLAUSE__CACHE_,
311 /* OpenACC clause: gang [(gang-argument-list)].
312 Where
313 gang-argument-list: [gang-argument-list, ] gang-argument
314 gang-argument: [num:] integer-expression
315 | static: size-expression
316 size-expression: * | integer-expression. */
317 OMP_CLAUSE_GANG,
319 /* OpenACC clause: async [(integer-expression)]. */
320 OMP_CLAUSE_ASYNC,
322 /* OpenACC clause: wait [(integer-expression-list)]. */
323 OMP_CLAUSE_WAIT,
325 /* OpenACC clause: auto. */
326 OMP_CLAUSE_AUTO,
328 /* OpenACC clause: seq. */
329 OMP_CLAUSE_SEQ,
331 /* Internal clause: temporary for combined loops expansion. */
332 OMP_CLAUSE__LOOPTEMP_,
334 /* OpenACC/OpenMP clause: if (scalar-expression). */
335 OMP_CLAUSE_IF,
337 /* OpenMP clause: num_threads (integer-expression). */
338 OMP_CLAUSE_NUM_THREADS,
340 /* OpenMP clause: schedule. */
341 OMP_CLAUSE_SCHEDULE,
343 /* OpenMP clause: nowait. */
344 OMP_CLAUSE_NOWAIT,
346 /* OpenMP clause: ordered [(constant-integer-expression)]. */
347 OMP_CLAUSE_ORDERED,
349 /* OpenACC/OpenMP clause: default. */
350 OMP_CLAUSE_DEFAULT,
352 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
353 OMP_CLAUSE_COLLAPSE,
355 /* OpenMP clause: untied. */
356 OMP_CLAUSE_UNTIED,
358 /* OpenMP clause: final (scalar-expression). */
359 OMP_CLAUSE_FINAL,
361 /* OpenMP clause: mergeable. */
362 OMP_CLAUSE_MERGEABLE,
364 /* OpenMP clause: device (integer-expression). */
365 OMP_CLAUSE_DEVICE,
367 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
368 OMP_CLAUSE_DIST_SCHEDULE,
370 /* OpenMP clause: inbranch. */
371 OMP_CLAUSE_INBRANCH,
373 /* OpenMP clause: notinbranch. */
374 OMP_CLAUSE_NOTINBRANCH,
376 /* OpenMP clause: num_teams(integer-expression). */
377 OMP_CLAUSE_NUM_TEAMS,
379 /* OpenMP clause: thread_limit(integer-expression). */
380 OMP_CLAUSE_THREAD_LIMIT,
382 /* OpenMP clause: proc_bind ({master,close,spread}). */
383 OMP_CLAUSE_PROC_BIND,
385 /* OpenMP clause: safelen (constant-integer-expression). */
386 OMP_CLAUSE_SAFELEN,
388 /* OpenMP clause: simdlen (constant-integer-expression). */
389 OMP_CLAUSE_SIMDLEN,
391 /* OpenMP clause: for. */
392 OMP_CLAUSE_FOR,
394 /* OpenMP clause: parallel. */
395 OMP_CLAUSE_PARALLEL,
397 /* OpenMP clause: sections. */
398 OMP_CLAUSE_SECTIONS,
400 /* OpenMP clause: taskgroup. */
401 OMP_CLAUSE_TASKGROUP,
403 /* OpenMP clause: priority (integer-expression). */
404 OMP_CLAUSE_PRIORITY,
406 /* OpenMP clause: grainsize (integer-expression). */
407 OMP_CLAUSE_GRAINSIZE,
409 /* OpenMP clause: num_tasks (integer-expression). */
410 OMP_CLAUSE_NUM_TASKS,
412 /* OpenMP clause: nogroup. */
413 OMP_CLAUSE_NOGROUP,
415 /* OpenMP clause: threads. */
416 OMP_CLAUSE_THREADS,
418 /* OpenMP clause: simd. */
419 OMP_CLAUSE_SIMD,
421 /* OpenMP clause: hint (integer-expression). */
422 OMP_CLAUSE_HINT,
424 /* OpenMP clause: defaultmap (tofrom: scalar). */
425 OMP_CLAUSE_DEFAULTMAP,
427 /* Internally used only clause, holding SIMD uid. */
428 OMP_CLAUSE__SIMDUID_,
430 /* Internally used only clause, flag whether this is SIMT simd
431 loop or not. */
432 OMP_CLAUSE__SIMT_,
434 /* OpenACC clause: independent. */
435 OMP_CLAUSE_INDEPENDENT,
437 /* OpenACC clause: worker [( [num:] integer-expression)]. */
438 OMP_CLAUSE_WORKER,
440 /* OpenACC clause: vector [( [length:] integer-expression)]. */
441 OMP_CLAUSE_VECTOR,
443 /* OpenACC clause: num_gangs (integer-expression). */
444 OMP_CLAUSE_NUM_GANGS,
446 /* OpenACC clause: num_workers (integer-expression). */
447 OMP_CLAUSE_NUM_WORKERS,
449 /* OpenACC clause: vector_length (integer-expression). */
450 OMP_CLAUSE_VECTOR_LENGTH,
452 /* OpenACC clause: tile ( size-expr-list ). */
453 OMP_CLAUSE_TILE,
455 /* OpenMP internal-only clause to specify grid dimensions of a gridified
456 kernel. */
457 OMP_CLAUSE__GRIDDIM_,
459 /* OpenACC clause: if_present. */
460 OMP_CLAUSE_IF_PRESENT,
462 /* OpenACC clause: finalize. */
463 OMP_CLAUSE_FINALIZE
466 #undef DEFTREESTRUCT
467 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
468 enum tree_node_structure_enum {
469 #include "treestruct.def"
470 LAST_TS_ENUM
472 #undef DEFTREESTRUCT
474 enum omp_clause_schedule_kind {
475 OMP_CLAUSE_SCHEDULE_STATIC,
476 OMP_CLAUSE_SCHEDULE_DYNAMIC,
477 OMP_CLAUSE_SCHEDULE_GUIDED,
478 OMP_CLAUSE_SCHEDULE_AUTO,
479 OMP_CLAUSE_SCHEDULE_RUNTIME,
480 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
481 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
482 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
483 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
486 enum omp_clause_default_kind {
487 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
488 OMP_CLAUSE_DEFAULT_SHARED,
489 OMP_CLAUSE_DEFAULT_NONE,
490 OMP_CLAUSE_DEFAULT_PRIVATE,
491 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
492 OMP_CLAUSE_DEFAULT_PRESENT,
493 OMP_CLAUSE_DEFAULT_LAST
496 /* There is a TYPE_QUAL value for each type qualifier. They can be
497 combined by bitwise-or to form the complete set of qualifiers for a
498 type. */
499 enum cv_qualifier {
500 TYPE_UNQUALIFIED = 0x0,
501 TYPE_QUAL_CONST = 0x1,
502 TYPE_QUAL_VOLATILE = 0x2,
503 TYPE_QUAL_RESTRICT = 0x4,
504 TYPE_QUAL_ATOMIC = 0x8
507 /* Standard named or nameless data types of the C compiler. */
508 enum tree_index {
509 TI_ERROR_MARK,
510 TI_INTQI_TYPE,
511 TI_INTHI_TYPE,
512 TI_INTSI_TYPE,
513 TI_INTDI_TYPE,
514 TI_INTTI_TYPE,
516 TI_UINTQI_TYPE,
517 TI_UINTHI_TYPE,
518 TI_UINTSI_TYPE,
519 TI_UINTDI_TYPE,
520 TI_UINTTI_TYPE,
522 TI_ATOMICQI_TYPE,
523 TI_ATOMICHI_TYPE,
524 TI_ATOMICSI_TYPE,
525 TI_ATOMICDI_TYPE,
526 TI_ATOMICTI_TYPE,
528 TI_UINT16_TYPE,
529 TI_UINT32_TYPE,
530 TI_UINT64_TYPE,
532 TI_VOID,
534 TI_INTEGER_ZERO,
535 TI_INTEGER_ONE,
536 TI_INTEGER_THREE,
537 TI_INTEGER_MINUS_ONE,
538 TI_NULL_POINTER,
540 TI_SIZE_ZERO,
541 TI_SIZE_ONE,
543 TI_BITSIZE_ZERO,
544 TI_BITSIZE_ONE,
545 TI_BITSIZE_UNIT,
547 TI_PUBLIC,
548 TI_PROTECTED,
549 TI_PRIVATE,
551 TI_BOOLEAN_FALSE,
552 TI_BOOLEAN_TRUE,
554 TI_FLOAT_TYPE,
555 TI_DOUBLE_TYPE,
556 TI_LONG_DOUBLE_TYPE,
558 /* The _FloatN and _FloatNx types must be consecutive, and in the
559 same sequence as the corresponding complex types, which must also
560 be consecutive; _FloatN must come before _FloatNx; the order must
561 also be the same as in the floatn_nx_types array and the RID_*
562 values in c-common.h. This is so that iterations over these
563 types work as intended. */
564 TI_FLOAT16_TYPE,
565 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
566 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
567 TI_FLOAT32_TYPE,
568 TI_FLOAT64_TYPE,
569 TI_FLOAT128_TYPE,
570 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
571 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
572 TI_FLOAT32X_TYPE,
573 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
574 TI_FLOAT64X_TYPE,
575 TI_FLOAT128X_TYPE,
576 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
577 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
578 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
579 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
580 - TI_FLOATN_NX_TYPE_FIRST \
581 + 1)
583 /* Put the complex types after their component types, so that in (sequential)
584 tree streaming we can assert that their component types have already been
585 handled (see tree-streamer.c:record_common_node). */
586 TI_COMPLEX_INTEGER_TYPE,
587 TI_COMPLEX_FLOAT_TYPE,
588 TI_COMPLEX_DOUBLE_TYPE,
589 TI_COMPLEX_LONG_DOUBLE_TYPE,
591 TI_COMPLEX_FLOAT16_TYPE,
592 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
593 TI_COMPLEX_FLOAT32_TYPE,
594 TI_COMPLEX_FLOAT64_TYPE,
595 TI_COMPLEX_FLOAT128_TYPE,
596 TI_COMPLEX_FLOAT32X_TYPE,
597 TI_COMPLEX_FLOAT64X_TYPE,
598 TI_COMPLEX_FLOAT128X_TYPE,
600 TI_FLOAT_PTR_TYPE,
601 TI_DOUBLE_PTR_TYPE,
602 TI_LONG_DOUBLE_PTR_TYPE,
603 TI_INTEGER_PTR_TYPE,
605 TI_VOID_TYPE,
606 TI_PTR_TYPE,
607 TI_CONST_PTR_TYPE,
608 TI_SIZE_TYPE,
609 TI_PID_TYPE,
610 TI_PTRDIFF_TYPE,
611 TI_VA_LIST_TYPE,
612 TI_VA_LIST_GPR_COUNTER_FIELD,
613 TI_VA_LIST_FPR_COUNTER_FIELD,
614 TI_BOOLEAN_TYPE,
615 TI_FILEPTR_TYPE,
616 TI_CONST_TM_PTR_TYPE,
617 TI_FENV_T_PTR_TYPE,
618 TI_CONST_FENV_T_PTR_TYPE,
619 TI_FEXCEPT_T_PTR_TYPE,
620 TI_CONST_FEXCEPT_T_PTR_TYPE,
621 TI_POINTER_SIZED_TYPE,
623 TI_DFLOAT32_TYPE,
624 TI_DFLOAT64_TYPE,
625 TI_DFLOAT128_TYPE,
626 TI_DFLOAT32_PTR_TYPE,
627 TI_DFLOAT64_PTR_TYPE,
628 TI_DFLOAT128_PTR_TYPE,
630 TI_VOID_LIST_NODE,
632 TI_MAIN_IDENTIFIER,
634 TI_SAT_SFRACT_TYPE,
635 TI_SAT_FRACT_TYPE,
636 TI_SAT_LFRACT_TYPE,
637 TI_SAT_LLFRACT_TYPE,
638 TI_SAT_USFRACT_TYPE,
639 TI_SAT_UFRACT_TYPE,
640 TI_SAT_ULFRACT_TYPE,
641 TI_SAT_ULLFRACT_TYPE,
642 TI_SFRACT_TYPE,
643 TI_FRACT_TYPE,
644 TI_LFRACT_TYPE,
645 TI_LLFRACT_TYPE,
646 TI_USFRACT_TYPE,
647 TI_UFRACT_TYPE,
648 TI_ULFRACT_TYPE,
649 TI_ULLFRACT_TYPE,
650 TI_SAT_SACCUM_TYPE,
651 TI_SAT_ACCUM_TYPE,
652 TI_SAT_LACCUM_TYPE,
653 TI_SAT_LLACCUM_TYPE,
654 TI_SAT_USACCUM_TYPE,
655 TI_SAT_UACCUM_TYPE,
656 TI_SAT_ULACCUM_TYPE,
657 TI_SAT_ULLACCUM_TYPE,
658 TI_SACCUM_TYPE,
659 TI_ACCUM_TYPE,
660 TI_LACCUM_TYPE,
661 TI_LLACCUM_TYPE,
662 TI_USACCUM_TYPE,
663 TI_UACCUM_TYPE,
664 TI_ULACCUM_TYPE,
665 TI_ULLACCUM_TYPE,
666 TI_QQ_TYPE,
667 TI_HQ_TYPE,
668 TI_SQ_TYPE,
669 TI_DQ_TYPE,
670 TI_TQ_TYPE,
671 TI_UQQ_TYPE,
672 TI_UHQ_TYPE,
673 TI_USQ_TYPE,
674 TI_UDQ_TYPE,
675 TI_UTQ_TYPE,
676 TI_SAT_QQ_TYPE,
677 TI_SAT_HQ_TYPE,
678 TI_SAT_SQ_TYPE,
679 TI_SAT_DQ_TYPE,
680 TI_SAT_TQ_TYPE,
681 TI_SAT_UQQ_TYPE,
682 TI_SAT_UHQ_TYPE,
683 TI_SAT_USQ_TYPE,
684 TI_SAT_UDQ_TYPE,
685 TI_SAT_UTQ_TYPE,
686 TI_HA_TYPE,
687 TI_SA_TYPE,
688 TI_DA_TYPE,
689 TI_TA_TYPE,
690 TI_UHA_TYPE,
691 TI_USA_TYPE,
692 TI_UDA_TYPE,
693 TI_UTA_TYPE,
694 TI_SAT_HA_TYPE,
695 TI_SAT_SA_TYPE,
696 TI_SAT_DA_TYPE,
697 TI_SAT_TA_TYPE,
698 TI_SAT_UHA_TYPE,
699 TI_SAT_USA_TYPE,
700 TI_SAT_UDA_TYPE,
701 TI_SAT_UTA_TYPE,
703 TI_OPTIMIZATION_DEFAULT,
704 TI_OPTIMIZATION_CURRENT,
705 TI_TARGET_OPTION_DEFAULT,
706 TI_TARGET_OPTION_CURRENT,
707 TI_CURRENT_TARGET_PRAGMA,
708 TI_CURRENT_OPTIMIZE_PRAGMA,
710 TI_MAX
713 /* An enumeration of the standard C integer types. These must be
714 ordered so that shorter types appear before longer ones, and so
715 that signed types appear before unsigned ones, for the correct
716 functioning of interpret_integer() in c-lex.c. */
717 enum integer_type_kind {
718 itk_char,
719 itk_signed_char,
720 itk_unsigned_char,
721 itk_short,
722 itk_unsigned_short,
723 itk_int,
724 itk_unsigned_int,
725 itk_long,
726 itk_unsigned_long,
727 itk_long_long,
728 itk_unsigned_long_long,
730 itk_intN_0,
731 itk_unsigned_intN_0,
732 itk_intN_1,
733 itk_unsigned_intN_1,
734 itk_intN_2,
735 itk_unsigned_intN_2,
736 itk_intN_3,
737 itk_unsigned_intN_3,
739 itk_none
742 /* A pointer-to-function member type looks like:
744 struct {
745 __P __pfn;
746 ptrdiff_t __delta;
749 If __pfn is NULL, it is a NULL pointer-to-member-function.
751 (Because the vtable is always the first thing in the object, we
752 don't need its offset.) If the function is virtual, then PFN is
753 one plus twice the index into the vtable; otherwise, it is just a
754 pointer to the function.
756 Unfortunately, using the lowest bit of PFN doesn't work in
757 architectures that don't impose alignment requirements on function
758 addresses, or that use the lowest bit to tell one ISA from another,
759 for example. For such architectures, we use the lowest bit of
760 DELTA instead of the lowest bit of the PFN, and DELTA will be
761 multiplied by 2. */
762 enum ptrmemfunc_vbit_where_t {
763 ptrmemfunc_vbit_in_pfn,
764 ptrmemfunc_vbit_in_delta
767 /* Flags that may be passed in the third argument of decl_attributes, and
768 to handler functions for attributes. */
769 enum attribute_flags {
770 /* The type passed in is the type of a DECL, and any attributes that
771 should be passed in again to be applied to the DECL rather than the
772 type should be returned. */
773 ATTR_FLAG_DECL_NEXT = 1,
774 /* The type passed in is a function return type, and any attributes that
775 should be passed in again to be applied to the function type rather
776 than the return type should be returned. */
777 ATTR_FLAG_FUNCTION_NEXT = 2,
778 /* The type passed in is an array element type, and any attributes that
779 should be passed in again to be applied to the array type rather
780 than the element type should be returned. */
781 ATTR_FLAG_ARRAY_NEXT = 4,
782 /* The type passed in is a structure, union or enumeration type being
783 created, and should be modified in place. */
784 ATTR_FLAG_TYPE_IN_PLACE = 8,
785 /* The attributes are being applied by default to a library function whose
786 name indicates known behavior, and should be silently ignored if they
787 are not in fact compatible with the function type. */
788 ATTR_FLAG_BUILT_IN = 16,
789 /* A given attribute has been parsed as a C++-11 attribute. */
790 ATTR_FLAG_CXX11 = 32
793 /* Types used to represent sizes. */
794 enum size_type_kind {
795 stk_sizetype, /* Normal representation of sizes in bytes. */
796 stk_ssizetype, /* Signed representation of sizes in bytes. */
797 stk_bitsizetype, /* Normal representation of sizes in bits. */
798 stk_sbitsizetype, /* Signed representation of sizes in bits. */
799 stk_type_kind_last
802 enum operand_equal_flag {
803 OEP_ONLY_CONST = 1,
804 OEP_PURE_SAME = 2,
805 OEP_MATCH_SIDE_EFFECTS = 4,
806 OEP_ADDRESS_OF = 8,
807 /* Internal within operand_equal_p: */
808 OEP_NO_HASH_CHECK = 16,
809 /* Internal within inchash::add_expr: */
810 OEP_HASH_CHECK = 32,
811 /* Makes operand_equal_p handle more expressions: */
812 OEP_LEXICOGRAPHIC = 64
815 /* Enum and arrays used for tree allocation stats.
816 Keep in sync with tree.c:tree_node_kind_names. */
817 enum tree_node_kind {
818 d_kind,
819 t_kind,
820 b_kind,
821 s_kind,
822 r_kind,
823 e_kind,
824 c_kind,
825 id_kind,
826 vec_kind,
827 binfo_kind,
828 ssa_name_kind,
829 constr_kind,
830 x_kind,
831 lang_decl,
832 lang_type,
833 omp_clause_kind,
834 all_kinds
837 enum annot_expr_kind {
838 annot_expr_ivdep_kind,
839 annot_expr_unroll_kind,
840 annot_expr_no_vector_kind,
841 annot_expr_vector_kind,
842 annot_expr_parallel_kind,
843 annot_expr_kind_last
846 /*---------------------------------------------------------------------------
847 Type definitions
848 ---------------------------------------------------------------------------*/
849 /* When processing aliases at the symbol table level, we need the
850 declaration of target. For this reason we need to queue aliases and
851 process them after all declarations has been produced. */
852 struct GTY(()) alias_pair {
853 tree decl;
854 tree target;
857 /* An initialization priority. */
858 typedef unsigned short priority_type;
860 /* The type of a callback function for walking over tree structure. */
861 typedef tree (*walk_tree_fn) (tree *, int *, void *);
863 /* The type of a callback function that represents a custom walk_tree. */
864 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
865 void *, hash_set<tree> *);
868 /*---------------------------------------------------------------------------
869 Main data structures
870 ---------------------------------------------------------------------------*/
871 /* A tree node can represent a data type, a variable, an expression
872 or a statement. Each node has a TREE_CODE which says what kind of
873 thing it represents. Some common codes are:
874 INTEGER_TYPE -- represents a type of integers.
875 ARRAY_TYPE -- represents a type of pointer.
876 VAR_DECL -- represents a declared variable.
877 INTEGER_CST -- represents a constant integer value.
878 PLUS_EXPR -- represents a sum (an expression).
880 As for the contents of a tree node: there are some fields
881 that all nodes share. Each TREE_CODE has various special-purpose
882 fields as well. The fields of a node are never accessed directly,
883 always through accessor macros. */
885 /* Every kind of tree node starts with this structure,
886 so all nodes have these fields.
888 See the accessor macros, defined below, for documentation of the
889 fields, and the table below which connects the fields and the
890 accessor macros. */
892 struct GTY(()) tree_base {
893 ENUM_BITFIELD(tree_code) code : 16;
895 unsigned side_effects_flag : 1;
896 unsigned constant_flag : 1;
897 unsigned addressable_flag : 1;
898 unsigned volatile_flag : 1;
899 unsigned readonly_flag : 1;
900 unsigned asm_written_flag: 1;
901 unsigned nowarning_flag : 1;
902 unsigned visited : 1;
904 unsigned used_flag : 1;
905 unsigned nothrow_flag : 1;
906 unsigned static_flag : 1;
907 unsigned public_flag : 1;
908 unsigned private_flag : 1;
909 unsigned protected_flag : 1;
910 unsigned deprecated_flag : 1;
911 unsigned default_def_flag : 1;
913 union {
914 /* The bits in the following structure should only be used with
915 accessor macros that constrain inputs with tree checking. */
916 struct {
917 unsigned lang_flag_0 : 1;
918 unsigned lang_flag_1 : 1;
919 unsigned lang_flag_2 : 1;
920 unsigned lang_flag_3 : 1;
921 unsigned lang_flag_4 : 1;
922 unsigned lang_flag_5 : 1;
923 unsigned lang_flag_6 : 1;
924 unsigned saturating_flag : 1;
926 unsigned unsigned_flag : 1;
927 unsigned packed_flag : 1;
928 unsigned user_align : 1;
929 unsigned nameless_flag : 1;
930 unsigned atomic_flag : 1;
931 unsigned spare0 : 3;
933 unsigned spare1 : 8;
935 /* This field is only used with TREE_TYPE nodes; the only reason it is
936 present in tree_base instead of tree_type is to save space. The size
937 of the field must be large enough to hold addr_space_t values. */
938 unsigned address_space : 8;
939 } bits;
941 /* The following fields are present in tree_base to save space. The
942 nodes using them do not require any of the flags above and so can
943 make better use of the 4-byte sized word. */
945 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
946 struct {
947 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
948 its native precision. */
949 unsigned char unextended;
951 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
952 wider precisions based on its TYPE_SIGN. */
953 unsigned char extended;
955 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
956 offset_int precision, with smaller integers being extended
957 according to their TYPE_SIGN. This is equal to one of the two
958 fields above but is cached for speed. */
959 unsigned char offset;
960 } int_length;
962 /* VEC length. This field is only used with TREE_VEC. */
963 int length;
965 /* This field is only used with VECTOR_CST. */
966 struct {
967 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
968 unsigned int log2_npatterns : 8;
970 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
971 unsigned int nelts_per_pattern : 8;
973 /* For future expansion. */
974 unsigned int unused : 16;
975 } vector_cst;
977 /* SSA version number. This field is only used with SSA_NAME. */
978 unsigned int version;
980 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
981 unsigned int chrec_var;
983 /* Internal function code. */
984 enum internal_fn ifn;
986 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
987 expression trees and specify known data non-dependences. For
988 two memory references in a function they are known to not
989 alias if dependence_info.clique are equal and dependence_info.base
990 are distinct. */
991 struct {
992 unsigned short clique;
993 unsigned short base;
994 } dependence_info;
995 } GTY((skip(""))) u;
998 /* The following table lists the uses of each of the above flags and
999 for which types of nodes they are defined.
1001 addressable_flag:
1003 TREE_ADDRESSABLE in
1004 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1005 SSA_NAME
1006 all types
1007 CONSTRUCTOR, IDENTIFIER_NODE
1008 STMT_EXPR
1010 CALL_EXPR_TAILCALL in
1011 CALL_EXPR
1013 CASE_LOW_SEEN in
1014 CASE_LABEL_EXPR
1016 PREDICT_EXPR_OUTCOME in
1017 PREDICT_EXPR
1019 static_flag:
1021 TREE_STATIC in
1022 VAR_DECL, FUNCTION_DECL
1023 CONSTRUCTOR
1025 TREE_NO_TRAMPOLINE in
1026 ADDR_EXPR
1028 BINFO_VIRTUAL_P in
1029 TREE_BINFO
1031 TREE_SYMBOL_REFERENCED in
1032 IDENTIFIER_NODE
1034 CLEANUP_EH_ONLY in
1035 TARGET_EXPR, WITH_CLEANUP_EXPR
1037 TRY_CATCH_IS_CLEANUP in
1038 TRY_CATCH_EXPR
1040 ASM_INPUT_P in
1041 ASM_EXPR
1043 TYPE_REF_CAN_ALIAS_ALL in
1044 POINTER_TYPE, REFERENCE_TYPE
1046 CASE_HIGH_SEEN in
1047 CASE_LABEL_EXPR
1049 ENUM_IS_SCOPED in
1050 ENUMERAL_TYPE
1052 TRANSACTION_EXPR_OUTER in
1053 TRANSACTION_EXPR
1055 SSA_NAME_ANTI_RANGE_P in
1056 SSA_NAME
1058 MUST_TAIL_CALL in
1059 CALL_EXPR
1061 public_flag:
1063 TREE_OVERFLOW in
1064 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1066 TREE_PUBLIC in
1067 VAR_DECL, FUNCTION_DECL
1068 IDENTIFIER_NODE
1070 CONSTRUCTOR_NO_CLEARING in
1071 CONSTRUCTOR
1073 ASM_VOLATILE_P in
1074 ASM_EXPR
1076 CALL_EXPR_VA_ARG_PACK in
1077 CALL_EXPR
1079 TYPE_CACHED_VALUES_P in
1080 all types
1082 SAVE_EXPR_RESOLVED_P in
1083 SAVE_EXPR
1085 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1086 OMP_CLAUSE_LASTPRIVATE
1088 OMP_CLAUSE_PRIVATE_DEBUG in
1089 OMP_CLAUSE_PRIVATE
1091 OMP_CLAUSE_LINEAR_NO_COPYIN in
1092 OMP_CLAUSE_LINEAR
1094 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1095 OMP_CLAUSE_MAP
1097 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1098 OMP_CLAUSE_REDUCTION
1100 TRANSACTION_EXPR_RELAXED in
1101 TRANSACTION_EXPR
1103 FALLTHROUGH_LABEL_P in
1104 LABEL_DECL
1106 SSA_NAME_IS_VIRTUAL_OPERAND in
1107 SSA_NAME
1109 EXPR_LOCATION_WRAPPER_P in
1110 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1112 private_flag:
1114 TREE_PRIVATE in
1115 all decls
1117 CALL_EXPR_RETURN_SLOT_OPT in
1118 CALL_EXPR
1120 OMP_SECTION_LAST in
1121 OMP_SECTION
1123 OMP_PARALLEL_COMBINED in
1124 OMP_PARALLEL
1126 OMP_ATOMIC_SEQ_CST in
1127 OMP_ATOMIC*
1129 OMP_CLAUSE_PRIVATE_OUTER_REF in
1130 OMP_CLAUSE_PRIVATE
1132 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1133 OMP_CLAUSE_LINEAR
1135 TYPE_REF_IS_RVALUE in
1136 REFERENCE_TYPE
1138 ENUM_IS_OPAQUE in
1139 ENUMERAL_TYPE
1141 protected_flag:
1143 TREE_PROTECTED in
1144 BLOCK
1145 all decls
1147 CALL_FROM_THUNK_P and
1148 CALL_ALLOCA_FOR_VAR_P in
1149 CALL_EXPR
1151 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1152 OMP_CLAUSE_LINEAR
1154 side_effects_flag:
1156 TREE_SIDE_EFFECTS in
1157 all expressions
1158 all decls
1159 all constants
1161 FORCED_LABEL in
1162 LABEL_DECL
1164 volatile_flag:
1166 TREE_THIS_VOLATILE in
1167 all expressions
1168 all decls
1170 TYPE_VOLATILE in
1171 all types
1173 readonly_flag:
1175 TREE_READONLY in
1176 all expressions
1177 all decls
1179 TYPE_READONLY in
1180 all types
1182 constant_flag:
1184 TREE_CONSTANT in
1185 all expressions
1186 all decls
1187 all constants
1189 TYPE_SIZES_GIMPLIFIED in
1190 all types
1192 unsigned_flag:
1194 TYPE_UNSIGNED in
1195 all types
1197 DECL_UNSIGNED in
1198 all decls
1200 asm_written_flag:
1202 TREE_ASM_WRITTEN in
1203 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1204 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1205 BLOCK, STRING_CST
1207 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1208 SSA_NAME
1210 used_flag:
1212 TREE_USED in
1213 all expressions
1214 all decls
1215 IDENTIFIER_NODE
1217 nothrow_flag:
1219 TREE_NOTHROW in
1220 CALL_EXPR
1221 FUNCTION_DECL
1223 TREE_THIS_NOTRAP in
1224 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1226 SSA_NAME_IN_FREE_LIST in
1227 SSA_NAME
1229 DECL_NONALIASED in
1230 VAR_DECL
1232 deprecated_flag:
1234 TREE_DEPRECATED in
1235 all decls
1236 all types
1238 IDENTIFIER_TRANSPARENT_ALIAS in
1239 IDENTIFIER_NODE
1241 SSA_NAME_POINTS_TO_READONLY_MEMORY in
1242 SSA_NAME
1244 visited:
1246 TREE_VISITED in
1247 all trees (used liberally by many passes)
1249 saturating_flag:
1251 TYPE_REVERSE_STORAGE_ORDER in
1252 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1254 TYPE_SATURATING in
1255 other types
1257 VAR_DECL_IS_VIRTUAL_OPERAND in
1258 VAR_DECL
1260 nowarning_flag:
1262 TREE_NO_WARNING in
1263 all expressions
1264 all decls
1266 TYPE_ARTIFICIAL in
1267 all types
1269 default_def_flag:
1271 TYPE_FINAL_P in
1272 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1274 TYPE_VECTOR_OPAQUE in
1275 VECTOR_TYPE
1277 SSA_NAME_IS_DEFAULT_DEF in
1278 SSA_NAME
1280 DECL_NONLOCAL_FRAME in
1281 VAR_DECL
1283 REF_REVERSE_STORAGE_ORDER in
1284 BIT_FIELD_REF, MEM_REF
1286 FUNC_ADDR_BY_DESCRIPTOR in
1287 ADDR_EXPR
1289 CALL_EXPR_BY_DESCRIPTOR in
1290 CALL_EXPR
1293 struct GTY(()) tree_typed {
1294 struct tree_base base;
1295 tree type;
1298 struct GTY(()) tree_common {
1299 struct tree_typed typed;
1300 tree chain;
1303 struct GTY(()) tree_int_cst {
1304 struct tree_typed typed;
1305 HOST_WIDE_INT val[1];
1309 struct GTY(()) tree_real_cst {
1310 struct tree_typed typed;
1311 struct real_value * real_cst_ptr;
1314 struct GTY(()) tree_fixed_cst {
1315 struct tree_typed typed;
1316 struct fixed_value * fixed_cst_ptr;
1319 struct GTY(()) tree_string {
1320 struct tree_typed typed;
1321 int length;
1322 char str[1];
1325 struct GTY(()) tree_complex {
1326 struct tree_typed typed;
1327 tree real;
1328 tree imag;
1331 struct GTY(()) tree_vector {
1332 struct tree_typed typed;
1333 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1];
1336 struct GTY(()) tree_poly_int_cst {
1337 struct tree_typed typed;
1338 tree coeffs[NUM_POLY_INT_COEFFS];
1341 struct GTY(()) tree_identifier {
1342 struct tree_common common;
1343 struct ht_identifier id;
1346 struct GTY(()) tree_list {
1347 struct tree_common common;
1348 tree purpose;
1349 tree value;
1352 struct GTY(()) tree_vec {
1353 struct tree_common common;
1354 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1357 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1358 element. INDEX can optionally design the position of VALUE: in arrays,
1359 it is the index where VALUE has to be placed; in structures, it is the
1360 FIELD_DECL of the member. */
1361 struct GTY(()) constructor_elt {
1362 tree index;
1363 tree value;
1366 struct GTY(()) tree_constructor {
1367 struct tree_typed typed;
1368 vec<constructor_elt, va_gc> *elts;
1371 enum omp_clause_depend_kind
1373 OMP_CLAUSE_DEPEND_IN,
1374 OMP_CLAUSE_DEPEND_OUT,
1375 OMP_CLAUSE_DEPEND_INOUT,
1376 OMP_CLAUSE_DEPEND_SOURCE,
1377 OMP_CLAUSE_DEPEND_SINK,
1378 OMP_CLAUSE_DEPEND_LAST
1381 enum omp_clause_proc_bind_kind
1383 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1384 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1385 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1386 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1387 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1388 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1389 OMP_CLAUSE_PROC_BIND_LAST
1392 enum omp_clause_linear_kind
1394 OMP_CLAUSE_LINEAR_DEFAULT,
1395 OMP_CLAUSE_LINEAR_REF,
1396 OMP_CLAUSE_LINEAR_VAL,
1397 OMP_CLAUSE_LINEAR_UVAL
1400 struct GTY(()) tree_exp {
1401 struct tree_typed typed;
1402 location_t locus;
1403 tree GTY ((special ("tree_exp"),
1404 desc ("TREE_CODE ((tree) &%0)")))
1405 operands[1];
1408 /* Immediate use linking structure. This structure is used for maintaining
1409 a doubly linked list of uses of an SSA_NAME. */
1410 struct GTY(()) ssa_use_operand_t {
1411 struct ssa_use_operand_t* GTY((skip(""))) prev;
1412 struct ssa_use_operand_t* GTY((skip(""))) next;
1413 /* Immediate uses for a given SSA name are maintained as a cyclic
1414 list. To recognize the root of this list, the location field
1415 needs to point to the original SSA name. Since statements and
1416 SSA names are of different data types, we need this union. See
1417 the explanation in struct imm_use_iterator. */
1418 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1419 tree *GTY((skip(""))) use;
1422 struct GTY(()) tree_ssa_name {
1423 struct tree_typed typed;
1425 /* _DECL wrapped by this SSA name. */
1426 tree var;
1428 /* Statement that defines this SSA name. */
1429 gimple *def_stmt;
1431 /* Value range information. */
1432 union ssa_name_info_type {
1433 /* Pointer attributes used for alias analysis. */
1434 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1435 /* Value range attributes used for zero/sign extension elimination. */
1436 struct GTY ((tag ("1"))) range_info_def *range_info;
1437 } GTY ((desc ("%1.typed.type ?" \
1438 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1440 /* Immediate uses list for this SSA_NAME. */
1441 struct ssa_use_operand_t imm_uses;
1444 struct GTY(()) phi_arg_d {
1445 /* imm_use MUST be the first element in struct because we do some
1446 pointer arithmetic with it. See phi_arg_index_from_use. */
1447 struct ssa_use_operand_t imm_use;
1448 tree def;
1449 location_t locus;
1452 struct GTY(()) tree_omp_clause {
1453 struct tree_common common;
1454 location_t locus;
1455 enum omp_clause_code code;
1456 union omp_clause_subcode {
1457 enum omp_clause_default_kind default_kind;
1458 enum omp_clause_schedule_kind schedule_kind;
1459 enum omp_clause_depend_kind depend_kind;
1460 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1461 unsigned int map_kind;
1462 enum omp_clause_proc_bind_kind proc_bind_kind;
1463 enum tree_code reduction_code;
1464 enum omp_clause_linear_kind linear_kind;
1465 enum tree_code if_modifier;
1466 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1467 construct describes. */
1468 unsigned int dimension;
1469 } GTY ((skip)) subcode;
1471 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1472 usage. */
1473 gimple_seq gimple_reduction_init;
1474 gimple_seq gimple_reduction_merge;
1476 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1477 ops[1];
1480 struct GTY(()) tree_block {
1481 struct tree_base base;
1482 tree chain;
1484 unsigned abstract_flag : 1;
1485 unsigned block_num : 31;
1487 location_t locus;
1488 location_t end_locus;
1490 tree vars;
1491 vec<tree, va_gc> *nonlocalized_vars;
1493 tree subblocks;
1494 tree supercontext;
1495 tree abstract_origin;
1496 tree fragment_origin;
1497 tree fragment_chain;
1499 /* Pointer to the DWARF lexical block. */
1500 struct die_struct *die;
1503 struct GTY(()) tree_type_common {
1504 struct tree_common common;
1505 tree size;
1506 tree size_unit;
1507 tree attributes;
1508 unsigned int uid;
1510 unsigned int precision : 10;
1511 unsigned no_force_blk_flag : 1;
1512 unsigned needs_constructing_flag : 1;
1513 unsigned transparent_aggr_flag : 1;
1514 unsigned restrict_flag : 1;
1515 unsigned contains_placeholder_bits : 2;
1517 ENUM_BITFIELD(machine_mode) mode : 8;
1519 unsigned string_flag : 1;
1520 unsigned lang_flag_0 : 1;
1521 unsigned lang_flag_1 : 1;
1522 unsigned lang_flag_2 : 1;
1523 unsigned lang_flag_3 : 1;
1524 unsigned lang_flag_4 : 1;
1525 unsigned lang_flag_5 : 1;
1526 unsigned lang_flag_6 : 1;
1527 unsigned lang_flag_7 : 1;
1529 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1530 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1531 the latter being usually the larger. For ELF it is 8<<28,
1532 so we need to store the value 32 (not 31, as we need the zero
1533 as well), hence six bits. */
1534 unsigned align : 6;
1535 unsigned warn_if_not_align : 6;
1536 unsigned typeless_storage : 1;
1537 unsigned empty_flag : 1;
1538 unsigned spare : 17;
1540 alias_set_type alias_set;
1541 tree pointer_to;
1542 tree reference_to;
1543 union tree_type_symtab {
1544 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1545 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1546 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1547 tree canonical;
1548 tree next_variant;
1549 tree main_variant;
1550 tree context;
1551 tree name;
1554 struct GTY(()) tree_type_with_lang_specific {
1555 struct tree_type_common common;
1556 /* Points to a structure whose details depend on the language in use. */
1557 struct lang_type *lang_specific;
1560 struct GTY(()) tree_type_non_common {
1561 struct tree_type_with_lang_specific with_lang_specific;
1562 tree values;
1563 tree minval;
1564 tree maxval;
1565 tree lang_1;
1568 struct GTY (()) tree_binfo {
1569 struct tree_common common;
1571 tree offset;
1572 tree vtable;
1573 tree virtuals;
1574 tree vptr_field;
1575 vec<tree, va_gc> *base_accesses;
1576 tree inheritance;
1578 tree vtt_subvtt;
1579 tree vtt_vptr;
1581 vec<tree, va_gc> base_binfos;
1584 struct GTY(()) tree_decl_minimal {
1585 struct tree_common common;
1586 location_t locus;
1587 unsigned int uid;
1588 tree name;
1589 tree context;
1592 struct GTY(()) tree_decl_common {
1593 struct tree_decl_minimal common;
1594 tree size;
1596 ENUM_BITFIELD(machine_mode) mode : 8;
1598 unsigned nonlocal_flag : 1;
1599 unsigned virtual_flag : 1;
1600 unsigned ignored_flag : 1;
1601 unsigned abstract_flag : 1;
1602 unsigned artificial_flag : 1;
1603 unsigned preserve_flag: 1;
1604 unsigned debug_expr_is_from : 1;
1606 unsigned lang_flag_0 : 1;
1607 unsigned lang_flag_1 : 1;
1608 unsigned lang_flag_2 : 1;
1609 unsigned lang_flag_3 : 1;
1610 unsigned lang_flag_4 : 1;
1611 unsigned lang_flag_5 : 1;
1612 unsigned lang_flag_6 : 1;
1613 unsigned lang_flag_7 : 1;
1614 unsigned lang_flag_8 : 1;
1616 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1617 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */
1618 unsigned decl_flag_0 : 1;
1619 /* In FIELD_DECL, this is DECL_BIT_FIELD
1620 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1621 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1622 unsigned decl_flag_1 : 1;
1623 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1624 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1625 DECL_HAS_VALUE_EXPR_P. */
1626 unsigned decl_flag_2 : 1;
1627 /* In FIELD_DECL, this is DECL_PADDING_P. */
1628 unsigned decl_flag_3 : 1;
1629 /* Logically, these two would go in a theoretical base shared by var and
1630 parm decl. */
1631 unsigned gimple_reg_flag : 1;
1632 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1633 unsigned decl_by_reference_flag : 1;
1634 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1635 unsigned decl_read_flag : 1;
1636 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1637 unsigned decl_nonshareable_flag : 1;
1639 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1640 unsigned int off_align : 6;
1642 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1643 unsigned int align : 6;
1645 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1646 TYPE_WARN_IF_NOT_ALIGN. */
1647 unsigned int warn_if_not_align : 6;
1649 /* 14 bits unused. */
1651 /* UID for points-to sets, stable over copying from inlining. */
1652 unsigned int pt_uid;
1654 tree size_unit;
1655 tree initial;
1656 tree attributes;
1657 tree abstract_origin;
1659 /* Points to a structure whose details depend on the language in use. */
1660 struct lang_decl *lang_specific;
1663 struct GTY(()) tree_decl_with_rtl {
1664 struct tree_decl_common common;
1665 rtx rtl;
1668 struct GTY(()) tree_field_decl {
1669 struct tree_decl_common common;
1671 tree offset;
1672 tree bit_field_type;
1673 tree qualifier;
1674 tree bit_offset;
1675 tree fcontext;
1678 struct GTY(()) tree_label_decl {
1679 struct tree_decl_with_rtl common;
1680 int label_decl_uid;
1681 int eh_landing_pad_nr;
1684 struct GTY(()) tree_result_decl {
1685 struct tree_decl_with_rtl common;
1688 struct GTY(()) tree_const_decl {
1689 struct tree_decl_common common;
1692 struct GTY(()) tree_parm_decl {
1693 struct tree_decl_with_rtl common;
1694 rtx incoming_rtl;
1697 struct GTY(()) tree_decl_with_vis {
1698 struct tree_decl_with_rtl common;
1699 tree assembler_name;
1700 struct symtab_node *symtab_node;
1702 /* Belong to VAR_DECL exclusively. */
1703 unsigned defer_output : 1;
1704 unsigned hard_register : 1;
1705 unsigned common_flag : 1;
1706 unsigned in_text_section : 1;
1707 unsigned in_constant_pool : 1;
1708 unsigned dllimport_flag : 1;
1709 /* Don't belong to VAR_DECL exclusively. */
1710 unsigned weak_flag : 1;
1712 unsigned seen_in_bind_expr : 1;
1713 unsigned comdat_flag : 1;
1714 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1715 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1716 unsigned visibility_specified : 1;
1718 /* Belong to FUNCTION_DECL exclusively. */
1719 unsigned init_priority_p : 1;
1720 /* Used by C++ only. Might become a generic decl flag. */
1721 unsigned shadowed_for_var_p : 1;
1722 /* Belong to FUNCTION_DECL exclusively. */
1723 unsigned cxx_constructor : 1;
1724 /* Belong to FUNCTION_DECL exclusively. */
1725 unsigned cxx_destructor : 1;
1726 /* Belong to FUNCTION_DECL exclusively. */
1727 unsigned final : 1;
1728 /* Belong to FUNCTION_DECL exclusively. */
1729 unsigned regdecl_flag : 1;
1730 /* 14 unused bits. */
1733 struct GTY(()) tree_var_decl {
1734 struct tree_decl_with_vis common;
1737 struct GTY(()) tree_decl_non_common {
1738 struct tree_decl_with_vis common;
1739 /* Almost all FE's use this. */
1740 tree result;
1743 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1744 arguments/result/saved_tree fields by front ends. It was either inherit
1745 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1746 which seemed a bit strange. */
1748 struct GTY(()) tree_function_decl {
1749 struct tree_decl_non_common common;
1751 struct function *f;
1753 /* Arguments of the function. */
1754 tree arguments;
1755 /* The personality function. Used for stack unwinding. */
1756 tree personality;
1758 /* Function specific options that are used by this function. */
1759 tree function_specific_target; /* target options */
1760 tree function_specific_optimization; /* optimization options */
1762 /* Generic function body. */
1763 tree saved_tree;
1764 /* Index within a virtual table. */
1765 tree vindex;
1767 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1768 DECL_FUNCTION_CODE. Otherwise unused.
1769 ??? The bitfield needs to be able to hold all target function
1770 codes as well. */
1771 ENUM_BITFIELD(built_in_function) function_code : 12;
1772 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1774 unsigned static_ctor_flag : 1;
1775 unsigned static_dtor_flag : 1;
1777 unsigned uninlinable : 1;
1778 unsigned possibly_inlined : 1;
1779 unsigned novops_flag : 1;
1780 unsigned returns_twice_flag : 1;
1781 unsigned malloc_flag : 1;
1782 unsigned operator_new_flag : 1;
1783 unsigned declared_inline_flag : 1;
1784 unsigned no_inline_warning_flag : 1;
1786 unsigned no_instrument_function_entry_exit : 1;
1787 unsigned no_limit_stack : 1;
1788 unsigned disregard_inline_limits : 1;
1789 unsigned pure_flag : 1;
1790 unsigned looping_const_or_pure_flag : 1;
1791 unsigned has_debug_args_flag : 1;
1792 unsigned tm_clone_flag : 1;
1793 unsigned versioned_function : 1;
1794 /* No bits left. */
1797 struct GTY(()) tree_translation_unit_decl {
1798 struct tree_decl_common common;
1799 /* Source language of this translation unit. Used for DWARF output. */
1800 const char * GTY((skip(""))) language;
1801 /* TODO: Non-optimization used to build this translation unit. */
1802 /* TODO: Root of a partial DWARF tree for global types and decls. */
1805 struct GTY(()) tree_type_decl {
1806 struct tree_decl_non_common common;
1810 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1812 struct tree_statement_list_node *prev;
1813 struct tree_statement_list_node *next;
1814 tree stmt;
1817 struct GTY(()) tree_statement_list
1819 struct tree_typed typed;
1820 struct tree_statement_list_node *head;
1821 struct tree_statement_list_node *tail;
1825 /* Optimization options used by a function. */
1827 struct GTY(()) tree_optimization_option {
1828 struct tree_base base;
1830 /* The optimization options used by the user. */
1831 struct cl_optimization *opts;
1833 /* Target optabs for this set of optimization options. This is of
1834 type `struct target_optabs *'. */
1835 void *GTY ((atomic)) optabs;
1837 /* The value of this_target_optabs against which the optabs above were
1838 generated. */
1839 struct target_optabs *GTY ((skip)) base_optabs;
1842 /* Forward declaration, defined in target-globals.h. */
1844 struct GTY(()) target_globals;
1846 /* Target options used by a function. */
1848 struct GTY(()) tree_target_option {
1849 struct tree_base base;
1851 /* Target globals for the corresponding target option. */
1852 struct target_globals *globals;
1854 /* The optimization options used by the user. */
1855 struct cl_target_option *opts;
1858 /* Define the overall contents of a tree node.
1859 It may be any of the structures declared above
1860 for various types of node. */
1861 union GTY ((ptr_alias (union lang_tree_node),
1862 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
1863 struct tree_base GTY ((tag ("TS_BASE"))) base;
1864 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
1865 struct tree_common GTY ((tag ("TS_COMMON"))) common;
1866 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
1867 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst;
1868 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
1869 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
1870 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
1871 struct tree_string GTY ((tag ("TS_STRING"))) string;
1872 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
1873 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
1874 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
1875 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
1876 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
1877 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
1878 decl_non_common;
1879 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
1880 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
1881 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
1882 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
1883 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
1884 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
1885 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
1886 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
1887 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
1888 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1889 translation_unit_decl;
1890 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
1891 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1892 type_with_lang_specific;
1893 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
1894 type_non_common;
1895 struct tree_list GTY ((tag ("TS_LIST"))) list;
1896 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
1897 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
1898 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
1899 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
1900 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
1901 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
1902 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
1903 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
1904 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
1905 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
1908 /* Structure describing an attribute and a function to handle it. */
1909 struct attribute_spec {
1910 /* The name of the attribute (without any leading or trailing __),
1911 or NULL to mark the end of a table of attributes. */
1912 const char *name;
1913 /* The minimum length of the list of arguments of the attribute. */
1914 int min_length;
1915 /* The maximum length of the list of arguments of the attribute
1916 (-1 for no maximum). */
1917 int max_length;
1918 /* Whether this attribute requires a DECL. If it does, it will be passed
1919 from types of DECLs, function return types and array element types to
1920 the DECLs, function types and array types respectively; but when
1921 applied to a type in any other circumstances, it will be ignored with
1922 a warning. (If greater control is desired for a given attribute,
1923 this should be false, and the flags argument to the handler may be
1924 used to gain greater control in that case.) */
1925 bool decl_required;
1926 /* Whether this attribute requires a type. If it does, it will be passed
1927 from a DECL to the type of that DECL. */
1928 bool type_required;
1929 /* Whether this attribute requires a function (or method) type. If it does,
1930 it will be passed from a function pointer type to the target type,
1931 and from a function return type (which is not itself a function
1932 pointer type) to the function type. */
1933 bool function_type_required;
1934 /* Specifies if attribute affects type's identity. */
1935 bool affects_type_identity;
1936 /* Function to handle this attribute. NODE points to the node to which
1937 the attribute is to be applied. If a DECL, it should be modified in
1938 place; if a TYPE, a copy should be created. NAME is the canonicalized
1939 name of the attribute i.e. without any leading or trailing underscores.
1940 ARGS is the TREE_LIST of the arguments (which may be NULL). FLAGS gives
1941 further information about the context of the attribute. Afterwards, the
1942 attributes will be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as
1943 appropriate, unless *NO_ADD_ATTRS is set to true (which should be done on
1944 error, as well as in any other cases when the attributes should not be
1945 added to the DECL or TYPE). Depending on FLAGS, any attributes to be
1946 applied to another type or DECL later may be returned;
1947 otherwise the return value should be NULL_TREE. This pointer may be
1948 NULL if no special handling is required beyond the checks implied
1949 by the rest of this structure. */
1950 tree (*handler) (tree *node, tree name, tree args,
1951 int flags, bool *no_add_attrs);
1953 /* Specifies the name of an attribute that's mutually exclusive with
1954 this one, and whether the relationship applies to the function,
1955 variable, or type form of the attribute. */
1956 struct exclusions {
1957 const char *name;
1958 bool function;
1959 bool variable;
1960 bool type;
1963 /* An array of attribute exclusions describing names of other attributes
1964 that this attribute is mutually exclusive with. */
1965 const exclusions *exclude;
1968 /* These functions allow a front-end to perform a manual layout of a
1969 RECORD_TYPE. (For instance, if the placement of subsequent fields
1970 depends on the placement of fields so far.) Begin by calling
1971 start_record_layout. Then, call place_field for each of the
1972 fields. Then, call finish_record_layout. See layout_type for the
1973 default way in which these functions are used. */
1974 typedef struct record_layout_info_s {
1975 /* The RECORD_TYPE that we are laying out. */
1976 tree t;
1977 /* The offset into the record so far, in bytes, not including bits in
1978 BITPOS. */
1979 tree offset;
1980 /* The last known alignment of SIZE. */
1981 unsigned int offset_align;
1982 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1983 tree bitpos;
1984 /* The alignment of the record so far, in bits. */
1985 unsigned int record_align;
1986 /* The alignment of the record so far, ignoring #pragma pack and
1987 __attribute__ ((packed)), in bits. */
1988 unsigned int unpacked_align;
1989 /* The previous field laid out. */
1990 tree prev_field;
1991 /* The static variables (i.e., class variables, as opposed to
1992 instance variables) encountered in T. */
1993 vec<tree, va_gc> *pending_statics;
1994 /* Bits remaining in the current alignment group */
1995 int remaining_in_alignment;
1996 /* True if we've seen a packed field that didn't have normal
1997 alignment anyway. */
1998 int packed_maybe_necessary;
1999 } *record_layout_info;
2001 /* Iterator for going through the function arguments. */
2002 struct function_args_iterator {
2003 tree next; /* TREE_LIST pointing to the next argument */
2006 /* Structures to map from a tree to another tree. */
2007 struct GTY(()) tree_map_base {
2008 tree from;
2011 /* Map from a tree to another tree. */
2013 struct GTY((for_user)) tree_map {
2014 struct tree_map_base base;
2015 unsigned int hash;
2016 tree to;
2019 /* Map from a decl tree to another tree. */
2020 struct GTY((for_user)) tree_decl_map {
2021 struct tree_map_base base;
2022 tree to;
2025 /* Map from a tree to an int. */
2026 struct GTY((for_user)) tree_int_map {
2027 struct tree_map_base base;
2028 unsigned int to;
2031 /* Map from a decl tree to a tree vector. */
2032 struct GTY((for_user)) tree_vec_map {
2033 struct tree_map_base base;
2034 vec<tree, va_gc> *to;
2037 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2038 have to go towards the end of tree.h so that union tree_node is fully
2039 defined by this point. */
2041 /* Structure containing iterator state. */
2042 struct call_expr_arg_iterator {
2043 tree t; /* the call_expr */
2044 int n; /* argument count */
2045 int i; /* next argument index */
2048 struct const_call_expr_arg_iterator {
2049 const_tree t; /* the call_expr */
2050 int n; /* argument count */
2051 int i; /* next argument index */
2054 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2055 function, and flags. */
2056 struct GTY(()) builtin_info_type {
2057 tree decl;
2058 /* Whether the user can use <xxx> instead of explicitly using calls
2059 to __builtin_<xxx>. */
2060 unsigned implicit_p : 1;
2061 /* Whether the user has provided a declaration of <xxx>. */
2062 unsigned declared_p : 1;
2065 /* Information about a _FloatN or _FloatNx type that may be
2066 supported. */
2067 struct floatn_type_info {
2068 /* The number N in the type name. */
2069 int n;
2070 /* Whether it is an extended type _FloatNx (true) or an interchange
2071 type (false). */
2072 bool extended;
2076 /*---------------------------------------------------------------------------
2077 Global variables
2078 ---------------------------------------------------------------------------*/
2079 /* Matrix describing the structures contained in a given tree code. */
2080 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2082 /* Class of tree given its code. */
2083 extern const enum tree_code_class tree_code_type[];
2085 /* Each tree code class has an associated string representation.
2086 These must correspond to the tree_code_class entries. */
2087 extern const char *const tree_code_class_strings[];
2089 /* Number of argument-words in each kind of tree-node. */
2090 extern const unsigned char tree_code_length[];
2092 /* Vector of all alias pairs for global symbols. */
2093 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2095 /* Names of all the built_in classes. */
2096 extern const char *const built_in_class_names[BUILT_IN_LAST];
2098 /* Names of all the built_in functions. */
2099 extern const char * built_in_names[(int) END_BUILTINS];
2101 /* Number of operands and names for each OMP_CLAUSE node. */
2102 extern unsigned const char omp_clause_num_ops[];
2103 extern const char * const omp_clause_code_name[];
2105 /* A vector of all translation-units. */
2106 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2108 /* Vector of standard trees used by the C compiler. */
2109 extern GTY(()) tree global_trees[TI_MAX];
2111 /* The standard C integer types. Use integer_type_kind to index into
2112 this array. */
2113 extern GTY(()) tree integer_types[itk_none];
2115 /* Types used to represent sizes. */
2116 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2118 /* Arrays for keeping track of tree node statistics. */
2119 extern uint64_t tree_node_counts[];
2120 extern uint64_t tree_node_sizes[];
2122 /* True if we are in gimple form and the actions of the folders need to
2123 be restricted. False if we are not in gimple form and folding is not
2124 restricted to creating gimple expressions. */
2125 extern bool in_gimple_form;
2127 /* Functional interface to the builtin functions. */
2128 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2130 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2131 extern unsigned int maximum_field_alignment;
2133 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2134 extern GTY(()) tree current_function_decl;
2136 /* Nonzero means a FUNC_BEGIN label was emitted. */
2137 extern GTY(()) const char * current_function_func_begin_label;
2139 /* Information about the _FloatN and _FloatNx types. */
2140 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2142 #endif // GCC_TREE_CORE_H