PR target/84064
[official-gcc.git] / gcc / tree-core.h
blob478c631998cf17139081c65d81f179dfb982b67d
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"
169 BEGIN_CHKP_BUILTINS,
171 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
172 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
173 ENUM##_CHKP = ENUM + BEGIN_CHKP_BUILTINS + 1,
174 #include "builtins.def"
176 END_CHKP_BUILTINS = BEGIN_CHKP_BUILTINS * 2 + 1,
178 /* Complex division routines in libgcc. These are done via builtins
179 because emit_library_call_value can't handle complex values. */
180 BUILT_IN_COMPLEX_MUL_MIN,
181 BUILT_IN_COMPLEX_MUL_MAX
182 = BUILT_IN_COMPLEX_MUL_MIN
183 + MAX_MODE_COMPLEX_FLOAT
184 - MIN_MODE_COMPLEX_FLOAT,
186 BUILT_IN_COMPLEX_DIV_MIN,
187 BUILT_IN_COMPLEX_DIV_MAX
188 = BUILT_IN_COMPLEX_DIV_MIN
189 + MAX_MODE_COMPLEX_FLOAT
190 - MIN_MODE_COMPLEX_FLOAT,
192 /* Upper bound on non-language-specific builtins. */
193 END_BUILTINS
196 /* Internal functions. */
197 enum internal_fn {
198 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) IFN_##CODE,
199 #include "internal-fn.def"
200 IFN_LAST
203 /* An enum that combines target-independent built-in functions with
204 internal functions, so that they can be treated in a similar way.
205 The numbers for built-in functions are the same as for the
206 built_in_function enum. The numbers for internal functions
207 start at END_BUITLINS. */
208 enum combined_fn {
209 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
210 CFN_##ENUM = int (ENUM),
211 #include "builtins.def"
213 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND)
214 #define DEF_BUILTIN_CHKP(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
215 CFN_##ENUM##_CHKP = int (ENUM##_CHKP),
216 #include "builtins.def"
218 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
219 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
220 #include "internal-fn.def"
222 CFN_LAST
225 /* Tree code classes. Each tree_code has an associated code class
226 represented by a TREE_CODE_CLASS. */
227 enum tree_code_class {
228 tcc_exceptional, /* An exceptional code (fits no category). */
229 tcc_constant, /* A constant. */
230 /* Order of tcc_type and tcc_declaration is important. */
231 tcc_type, /* A type object code. */
232 tcc_declaration, /* A declaration (also serving as variable refs). */
233 tcc_reference, /* A reference to storage. */
234 tcc_comparison, /* A comparison expression. */
235 tcc_unary, /* A unary arithmetic expression. */
236 tcc_binary, /* A binary arithmetic expression. */
237 tcc_statement, /* A statement expression, which have side effects
238 but usually no interesting value. */
239 tcc_vl_exp, /* A function call or other expression with a
240 variable-length operand vector. */
241 tcc_expression /* Any other expression. */
244 /* OMP_CLAUSE codes. Do not reorder, as this is used to index into
245 the tables omp_clause_num_ops and omp_clause_code_name. */
246 enum omp_clause_code {
247 /* Clause zero is special-cased inside the parser
248 (c_parser_omp_variable_list). */
249 OMP_CLAUSE_ERROR = 0,
251 /* OpenACC/OpenMP clause: private (variable_list). */
252 OMP_CLAUSE_PRIVATE,
254 /* OpenMP clause: shared (variable_list). */
255 OMP_CLAUSE_SHARED,
257 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
258 OMP_CLAUSE_FIRSTPRIVATE,
260 /* OpenMP clause: lastprivate (variable_list). */
261 OMP_CLAUSE_LASTPRIVATE,
263 /* OpenACC/OpenMP clause: reduction (operator:variable_list).
264 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
265 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
266 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
267 into the shared one.
268 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
269 placeholder used in OMP_CLAUSE_REDUCTION_{INIT,MERGE}.
270 Operand 4: OMP_CLAUSE_REDUCTION_DECL_PLACEHOLDER: Another dummy
271 VAR_DECL placeholder, used like the above for C/C++ array
272 reductions. */
273 OMP_CLAUSE_REDUCTION,
275 /* OpenMP clause: copyin (variable_list). */
276 OMP_CLAUSE_COPYIN,
278 /* OpenMP clause: copyprivate (variable_list). */
279 OMP_CLAUSE_COPYPRIVATE,
281 /* OpenMP clause: linear (variable-list[:linear-step]). */
282 OMP_CLAUSE_LINEAR,
284 /* OpenMP clause: aligned (variable-list[:alignment]). */
285 OMP_CLAUSE_ALIGNED,
287 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
288 OMP_CLAUSE_DEPEND,
290 /* OpenMP clause: uniform (argument-list). */
291 OMP_CLAUSE_UNIFORM,
293 /* OpenMP clause: to (extended-list).
294 Only when it appears in declare target. */
295 OMP_CLAUSE_TO_DECLARE,
297 /* OpenMP clause: link (variable-list). */
298 OMP_CLAUSE_LINK,
300 /* OpenMP clause: from (variable-list). */
301 OMP_CLAUSE_FROM,
303 /* OpenMP clause: to (variable-list). */
304 OMP_CLAUSE_TO,
306 /* OpenACC clauses: {copy, copyin, copyout, create, delete, deviceptr,
307 device, host (self), present, present_or_copy (pcopy), present_or_copyin
308 (pcopyin), present_or_copyout (pcopyout), present_or_create (pcreate)}
309 (variable-list).
311 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
312 OMP_CLAUSE_MAP,
314 /* OpenACC clause: use_device (variable_list).
315 OpenMP clause: use_device_ptr (variable-list). */
316 OMP_CLAUSE_USE_DEVICE_PTR,
318 /* OpenMP clause: is_device_ptr (variable-list). */
319 OMP_CLAUSE_IS_DEVICE_PTR,
321 /* Internal structure to hold OpenACC cache directive's variable-list.
322 #pragma acc cache (variable-list). */
323 OMP_CLAUSE__CACHE_,
325 /* OpenACC clause: gang [(gang-argument-list)].
326 Where
327 gang-argument-list: [gang-argument-list, ] gang-argument
328 gang-argument: [num:] integer-expression
329 | static: size-expression
330 size-expression: * | integer-expression. */
331 OMP_CLAUSE_GANG,
333 /* OpenACC clause: async [(integer-expression)]. */
334 OMP_CLAUSE_ASYNC,
336 /* OpenACC clause: wait [(integer-expression-list)]. */
337 OMP_CLAUSE_WAIT,
339 /* OpenACC clause: auto. */
340 OMP_CLAUSE_AUTO,
342 /* OpenACC clause: seq. */
343 OMP_CLAUSE_SEQ,
345 /* Internal clause: temporary for combined loops expansion. */
346 OMP_CLAUSE__LOOPTEMP_,
348 /* OpenACC/OpenMP clause: if (scalar-expression). */
349 OMP_CLAUSE_IF,
351 /* OpenMP clause: num_threads (integer-expression). */
352 OMP_CLAUSE_NUM_THREADS,
354 /* OpenMP clause: schedule. */
355 OMP_CLAUSE_SCHEDULE,
357 /* OpenMP clause: nowait. */
358 OMP_CLAUSE_NOWAIT,
360 /* OpenMP clause: ordered [(constant-integer-expression)]. */
361 OMP_CLAUSE_ORDERED,
363 /* OpenACC/OpenMP clause: default. */
364 OMP_CLAUSE_DEFAULT,
366 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
367 OMP_CLAUSE_COLLAPSE,
369 /* OpenMP clause: untied. */
370 OMP_CLAUSE_UNTIED,
372 /* OpenMP clause: final (scalar-expression). */
373 OMP_CLAUSE_FINAL,
375 /* OpenMP clause: mergeable. */
376 OMP_CLAUSE_MERGEABLE,
378 /* OpenMP clause: device (integer-expression). */
379 OMP_CLAUSE_DEVICE,
381 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
382 OMP_CLAUSE_DIST_SCHEDULE,
384 /* OpenMP clause: inbranch. */
385 OMP_CLAUSE_INBRANCH,
387 /* OpenMP clause: notinbranch. */
388 OMP_CLAUSE_NOTINBRANCH,
390 /* OpenMP clause: num_teams(integer-expression). */
391 OMP_CLAUSE_NUM_TEAMS,
393 /* OpenMP clause: thread_limit(integer-expression). */
394 OMP_CLAUSE_THREAD_LIMIT,
396 /* OpenMP clause: proc_bind ({master,close,spread}). */
397 OMP_CLAUSE_PROC_BIND,
399 /* OpenMP clause: safelen (constant-integer-expression). */
400 OMP_CLAUSE_SAFELEN,
402 /* OpenMP clause: simdlen (constant-integer-expression). */
403 OMP_CLAUSE_SIMDLEN,
405 /* OpenMP clause: for. */
406 OMP_CLAUSE_FOR,
408 /* OpenMP clause: parallel. */
409 OMP_CLAUSE_PARALLEL,
411 /* OpenMP clause: sections. */
412 OMP_CLAUSE_SECTIONS,
414 /* OpenMP clause: taskgroup. */
415 OMP_CLAUSE_TASKGROUP,
417 /* OpenMP clause: priority (integer-expression). */
418 OMP_CLAUSE_PRIORITY,
420 /* OpenMP clause: grainsize (integer-expression). */
421 OMP_CLAUSE_GRAINSIZE,
423 /* OpenMP clause: num_tasks (integer-expression). */
424 OMP_CLAUSE_NUM_TASKS,
426 /* OpenMP clause: nogroup. */
427 OMP_CLAUSE_NOGROUP,
429 /* OpenMP clause: threads. */
430 OMP_CLAUSE_THREADS,
432 /* OpenMP clause: simd. */
433 OMP_CLAUSE_SIMD,
435 /* OpenMP clause: hint (integer-expression). */
436 OMP_CLAUSE_HINT,
438 /* OpenMP clause: defaultmap (tofrom: scalar). */
439 OMP_CLAUSE_DEFAULTMAP,
441 /* Internally used only clause, holding SIMD uid. */
442 OMP_CLAUSE__SIMDUID_,
444 /* Internally used only clause, flag whether this is SIMT simd
445 loop or not. */
446 OMP_CLAUSE__SIMT_,
448 /* OpenACC clause: independent. */
449 OMP_CLAUSE_INDEPENDENT,
451 /* OpenACC clause: worker [( [num:] integer-expression)]. */
452 OMP_CLAUSE_WORKER,
454 /* OpenACC clause: vector [( [length:] integer-expression)]. */
455 OMP_CLAUSE_VECTOR,
457 /* OpenACC clause: num_gangs (integer-expression). */
458 OMP_CLAUSE_NUM_GANGS,
460 /* OpenACC clause: num_workers (integer-expression). */
461 OMP_CLAUSE_NUM_WORKERS,
463 /* OpenACC clause: vector_length (integer-expression). */
464 OMP_CLAUSE_VECTOR_LENGTH,
466 /* OpenACC clause: tile ( size-expr-list ). */
467 OMP_CLAUSE_TILE,
469 /* OpenMP internal-only clause to specify grid dimensions of a gridified
470 kernel. */
471 OMP_CLAUSE__GRIDDIM_
474 #undef DEFTREESTRUCT
475 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
476 enum tree_node_structure_enum {
477 #include "treestruct.def"
478 LAST_TS_ENUM
480 #undef DEFTREESTRUCT
482 enum omp_clause_schedule_kind {
483 OMP_CLAUSE_SCHEDULE_STATIC,
484 OMP_CLAUSE_SCHEDULE_DYNAMIC,
485 OMP_CLAUSE_SCHEDULE_GUIDED,
486 OMP_CLAUSE_SCHEDULE_AUTO,
487 OMP_CLAUSE_SCHEDULE_RUNTIME,
488 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
489 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
490 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
491 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
494 enum omp_clause_default_kind {
495 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
496 OMP_CLAUSE_DEFAULT_SHARED,
497 OMP_CLAUSE_DEFAULT_NONE,
498 OMP_CLAUSE_DEFAULT_PRIVATE,
499 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
500 OMP_CLAUSE_DEFAULT_PRESENT,
501 OMP_CLAUSE_DEFAULT_LAST
504 /* There is a TYPE_QUAL value for each type qualifier. They can be
505 combined by bitwise-or to form the complete set of qualifiers for a
506 type. */
507 enum cv_qualifier {
508 TYPE_UNQUALIFIED = 0x0,
509 TYPE_QUAL_CONST = 0x1,
510 TYPE_QUAL_VOLATILE = 0x2,
511 TYPE_QUAL_RESTRICT = 0x4,
512 TYPE_QUAL_ATOMIC = 0x8
515 /* Standard named or nameless data types of the C compiler. */
516 enum tree_index {
517 TI_ERROR_MARK,
518 TI_INTQI_TYPE,
519 TI_INTHI_TYPE,
520 TI_INTSI_TYPE,
521 TI_INTDI_TYPE,
522 TI_INTTI_TYPE,
524 TI_UINTQI_TYPE,
525 TI_UINTHI_TYPE,
526 TI_UINTSI_TYPE,
527 TI_UINTDI_TYPE,
528 TI_UINTTI_TYPE,
530 TI_ATOMICQI_TYPE,
531 TI_ATOMICHI_TYPE,
532 TI_ATOMICSI_TYPE,
533 TI_ATOMICDI_TYPE,
534 TI_ATOMICTI_TYPE,
536 TI_UINT16_TYPE,
537 TI_UINT32_TYPE,
538 TI_UINT64_TYPE,
540 TI_VOID,
542 TI_INTEGER_ZERO,
543 TI_INTEGER_ONE,
544 TI_INTEGER_THREE,
545 TI_INTEGER_MINUS_ONE,
546 TI_NULL_POINTER,
548 TI_SIZE_ZERO,
549 TI_SIZE_ONE,
551 TI_BITSIZE_ZERO,
552 TI_BITSIZE_ONE,
553 TI_BITSIZE_UNIT,
555 TI_PUBLIC,
556 TI_PROTECTED,
557 TI_PRIVATE,
559 TI_BOOLEAN_FALSE,
560 TI_BOOLEAN_TRUE,
562 TI_FLOAT_TYPE,
563 TI_DOUBLE_TYPE,
564 TI_LONG_DOUBLE_TYPE,
566 /* The _FloatN and _FloatNx types must be consecutive, and in the
567 same sequence as the corresponding complex types, which must also
568 be consecutive; _FloatN must come before _FloatNx; the order must
569 also be the same as in the floatn_nx_types array and the RID_*
570 values in c-common.h. This is so that iterations over these
571 types work as intended. */
572 TI_FLOAT16_TYPE,
573 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
574 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
575 TI_FLOAT32_TYPE,
576 TI_FLOAT64_TYPE,
577 TI_FLOAT128_TYPE,
578 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
579 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
580 TI_FLOAT32X_TYPE,
581 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
582 TI_FLOAT64X_TYPE,
583 TI_FLOAT128X_TYPE,
584 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
585 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
586 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
587 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
588 - TI_FLOATN_NX_TYPE_FIRST \
589 + 1)
591 /* Put the complex types after their component types, so that in (sequential)
592 tree streaming we can assert that their component types have already been
593 handled (see tree-streamer.c:record_common_node). */
594 TI_COMPLEX_INTEGER_TYPE,
595 TI_COMPLEX_FLOAT_TYPE,
596 TI_COMPLEX_DOUBLE_TYPE,
597 TI_COMPLEX_LONG_DOUBLE_TYPE,
599 TI_COMPLEX_FLOAT16_TYPE,
600 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
601 TI_COMPLEX_FLOAT32_TYPE,
602 TI_COMPLEX_FLOAT64_TYPE,
603 TI_COMPLEX_FLOAT128_TYPE,
604 TI_COMPLEX_FLOAT32X_TYPE,
605 TI_COMPLEX_FLOAT64X_TYPE,
606 TI_COMPLEX_FLOAT128X_TYPE,
608 TI_FLOAT_PTR_TYPE,
609 TI_DOUBLE_PTR_TYPE,
610 TI_LONG_DOUBLE_PTR_TYPE,
611 TI_INTEGER_PTR_TYPE,
613 TI_VOID_TYPE,
614 TI_PTR_TYPE,
615 TI_CONST_PTR_TYPE,
616 TI_SIZE_TYPE,
617 TI_PID_TYPE,
618 TI_PTRDIFF_TYPE,
619 TI_VA_LIST_TYPE,
620 TI_VA_LIST_GPR_COUNTER_FIELD,
621 TI_VA_LIST_FPR_COUNTER_FIELD,
622 TI_BOOLEAN_TYPE,
623 TI_FILEPTR_TYPE,
624 TI_CONST_TM_PTR_TYPE,
625 TI_FENV_T_PTR_TYPE,
626 TI_CONST_FENV_T_PTR_TYPE,
627 TI_FEXCEPT_T_PTR_TYPE,
628 TI_CONST_FEXCEPT_T_PTR_TYPE,
629 TI_POINTER_SIZED_TYPE,
631 TI_POINTER_BOUNDS_TYPE,
633 TI_DFLOAT32_TYPE,
634 TI_DFLOAT64_TYPE,
635 TI_DFLOAT128_TYPE,
636 TI_DFLOAT32_PTR_TYPE,
637 TI_DFLOAT64_PTR_TYPE,
638 TI_DFLOAT128_PTR_TYPE,
640 TI_VOID_LIST_NODE,
642 TI_MAIN_IDENTIFIER,
644 TI_SAT_SFRACT_TYPE,
645 TI_SAT_FRACT_TYPE,
646 TI_SAT_LFRACT_TYPE,
647 TI_SAT_LLFRACT_TYPE,
648 TI_SAT_USFRACT_TYPE,
649 TI_SAT_UFRACT_TYPE,
650 TI_SAT_ULFRACT_TYPE,
651 TI_SAT_ULLFRACT_TYPE,
652 TI_SFRACT_TYPE,
653 TI_FRACT_TYPE,
654 TI_LFRACT_TYPE,
655 TI_LLFRACT_TYPE,
656 TI_USFRACT_TYPE,
657 TI_UFRACT_TYPE,
658 TI_ULFRACT_TYPE,
659 TI_ULLFRACT_TYPE,
660 TI_SAT_SACCUM_TYPE,
661 TI_SAT_ACCUM_TYPE,
662 TI_SAT_LACCUM_TYPE,
663 TI_SAT_LLACCUM_TYPE,
664 TI_SAT_USACCUM_TYPE,
665 TI_SAT_UACCUM_TYPE,
666 TI_SAT_ULACCUM_TYPE,
667 TI_SAT_ULLACCUM_TYPE,
668 TI_SACCUM_TYPE,
669 TI_ACCUM_TYPE,
670 TI_LACCUM_TYPE,
671 TI_LLACCUM_TYPE,
672 TI_USACCUM_TYPE,
673 TI_UACCUM_TYPE,
674 TI_ULACCUM_TYPE,
675 TI_ULLACCUM_TYPE,
676 TI_QQ_TYPE,
677 TI_HQ_TYPE,
678 TI_SQ_TYPE,
679 TI_DQ_TYPE,
680 TI_TQ_TYPE,
681 TI_UQQ_TYPE,
682 TI_UHQ_TYPE,
683 TI_USQ_TYPE,
684 TI_UDQ_TYPE,
685 TI_UTQ_TYPE,
686 TI_SAT_QQ_TYPE,
687 TI_SAT_HQ_TYPE,
688 TI_SAT_SQ_TYPE,
689 TI_SAT_DQ_TYPE,
690 TI_SAT_TQ_TYPE,
691 TI_SAT_UQQ_TYPE,
692 TI_SAT_UHQ_TYPE,
693 TI_SAT_USQ_TYPE,
694 TI_SAT_UDQ_TYPE,
695 TI_SAT_UTQ_TYPE,
696 TI_HA_TYPE,
697 TI_SA_TYPE,
698 TI_DA_TYPE,
699 TI_TA_TYPE,
700 TI_UHA_TYPE,
701 TI_USA_TYPE,
702 TI_UDA_TYPE,
703 TI_UTA_TYPE,
704 TI_SAT_HA_TYPE,
705 TI_SAT_SA_TYPE,
706 TI_SAT_DA_TYPE,
707 TI_SAT_TA_TYPE,
708 TI_SAT_UHA_TYPE,
709 TI_SAT_USA_TYPE,
710 TI_SAT_UDA_TYPE,
711 TI_SAT_UTA_TYPE,
713 TI_OPTIMIZATION_DEFAULT,
714 TI_OPTIMIZATION_CURRENT,
715 TI_TARGET_OPTION_DEFAULT,
716 TI_TARGET_OPTION_CURRENT,
717 TI_CURRENT_TARGET_PRAGMA,
718 TI_CURRENT_OPTIMIZE_PRAGMA,
720 TI_MAX
723 /* An enumeration of the standard C integer types. These must be
724 ordered so that shorter types appear before longer ones, and so
725 that signed types appear before unsigned ones, for the correct
726 functioning of interpret_integer() in c-lex.c. */
727 enum integer_type_kind {
728 itk_char,
729 itk_signed_char,
730 itk_unsigned_char,
731 itk_short,
732 itk_unsigned_short,
733 itk_int,
734 itk_unsigned_int,
735 itk_long,
736 itk_unsigned_long,
737 itk_long_long,
738 itk_unsigned_long_long,
740 itk_intN_0,
741 itk_unsigned_intN_0,
742 itk_intN_1,
743 itk_unsigned_intN_1,
744 itk_intN_2,
745 itk_unsigned_intN_2,
746 itk_intN_3,
747 itk_unsigned_intN_3,
749 itk_none
752 /* A pointer-to-function member type looks like:
754 struct {
755 __P __pfn;
756 ptrdiff_t __delta;
759 If __pfn is NULL, it is a NULL pointer-to-member-function.
761 (Because the vtable is always the first thing in the object, we
762 don't need its offset.) If the function is virtual, then PFN is
763 one plus twice the index into the vtable; otherwise, it is just a
764 pointer to the function.
766 Unfortunately, using the lowest bit of PFN doesn't work in
767 architectures that don't impose alignment requirements on function
768 addresses, or that use the lowest bit to tell one ISA from another,
769 for example. For such architectures, we use the lowest bit of
770 DELTA instead of the lowest bit of the PFN, and DELTA will be
771 multiplied by 2. */
772 enum ptrmemfunc_vbit_where_t {
773 ptrmemfunc_vbit_in_pfn,
774 ptrmemfunc_vbit_in_delta
777 /* Flags that may be passed in the third argument of decl_attributes, and
778 to handler functions for attributes. */
779 enum attribute_flags {
780 /* The type passed in is the type of a DECL, and any attributes that
781 should be passed in again to be applied to the DECL rather than the
782 type should be returned. */
783 ATTR_FLAG_DECL_NEXT = 1,
784 /* The type passed in is a function return type, and any attributes that
785 should be passed in again to be applied to the function type rather
786 than the return type should be returned. */
787 ATTR_FLAG_FUNCTION_NEXT = 2,
788 /* The type passed in is an array element type, and any attributes that
789 should be passed in again to be applied to the array type rather
790 than the element type should be returned. */
791 ATTR_FLAG_ARRAY_NEXT = 4,
792 /* The type passed in is a structure, union or enumeration type being
793 created, and should be modified in place. */
794 ATTR_FLAG_TYPE_IN_PLACE = 8,
795 /* The attributes are being applied by default to a library function whose
796 name indicates known behavior, and should be silently ignored if they
797 are not in fact compatible with the function type. */
798 ATTR_FLAG_BUILT_IN = 16,
799 /* A given attribute has been parsed as a C++-11 attribute. */
800 ATTR_FLAG_CXX11 = 32
803 /* Types used to represent sizes. */
804 enum size_type_kind {
805 stk_sizetype, /* Normal representation of sizes in bytes. */
806 stk_ssizetype, /* Signed representation of sizes in bytes. */
807 stk_bitsizetype, /* Normal representation of sizes in bits. */
808 stk_sbitsizetype, /* Signed representation of sizes in bits. */
809 stk_type_kind_last
812 enum operand_equal_flag {
813 OEP_ONLY_CONST = 1,
814 OEP_PURE_SAME = 2,
815 OEP_MATCH_SIDE_EFFECTS = 4,
816 OEP_ADDRESS_OF = 8,
817 /* Internal within operand_equal_p: */
818 OEP_NO_HASH_CHECK = 16,
819 /* Internal within inchash::add_expr: */
820 OEP_HASH_CHECK = 32,
821 /* Makes operand_equal_p handle more expressions: */
822 OEP_LEXICOGRAPHIC = 64
825 /* Enum and arrays used for tree allocation stats.
826 Keep in sync with tree.c:tree_node_kind_names. */
827 enum tree_node_kind {
828 d_kind,
829 t_kind,
830 b_kind,
831 s_kind,
832 r_kind,
833 e_kind,
834 c_kind,
835 id_kind,
836 vec_kind,
837 binfo_kind,
838 ssa_name_kind,
839 constr_kind,
840 x_kind,
841 lang_decl,
842 lang_type,
843 omp_clause_kind,
844 all_kinds
847 enum annot_expr_kind {
848 annot_expr_ivdep_kind,
849 annot_expr_unroll_kind,
850 annot_expr_no_vector_kind,
851 annot_expr_vector_kind,
852 annot_expr_parallel_kind,
853 annot_expr_kind_last
856 /*---------------------------------------------------------------------------
857 Type definitions
858 ---------------------------------------------------------------------------*/
859 /* When processing aliases at the symbol table level, we need the
860 declaration of target. For this reason we need to queue aliases and
861 process them after all declarations has been produced. */
862 struct GTY(()) alias_pair {
863 tree decl;
864 tree target;
867 /* An initialization priority. */
868 typedef unsigned short priority_type;
870 /* The type of a callback function for walking over tree structure. */
871 typedef tree (*walk_tree_fn) (tree *, int *, void *);
873 /* The type of a callback function that represents a custom walk_tree. */
874 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
875 void *, hash_set<tree> *);
878 /*---------------------------------------------------------------------------
879 Main data structures
880 ---------------------------------------------------------------------------*/
881 /* A tree node can represent a data type, a variable, an expression
882 or a statement. Each node has a TREE_CODE which says what kind of
883 thing it represents. Some common codes are:
884 INTEGER_TYPE -- represents a type of integers.
885 ARRAY_TYPE -- represents a type of pointer.
886 VAR_DECL -- represents a declared variable.
887 INTEGER_CST -- represents a constant integer value.
888 PLUS_EXPR -- represents a sum (an expression).
890 As for the contents of a tree node: there are some fields
891 that all nodes share. Each TREE_CODE has various special-purpose
892 fields as well. The fields of a node are never accessed directly,
893 always through accessor macros. */
895 /* Every kind of tree node starts with this structure,
896 so all nodes have these fields.
898 See the accessor macros, defined below, for documentation of the
899 fields, and the table below which connects the fields and the
900 accessor macros. */
902 struct GTY(()) tree_base {
903 ENUM_BITFIELD(tree_code) code : 16;
905 unsigned side_effects_flag : 1;
906 unsigned constant_flag : 1;
907 unsigned addressable_flag : 1;
908 unsigned volatile_flag : 1;
909 unsigned readonly_flag : 1;
910 unsigned asm_written_flag: 1;
911 unsigned nowarning_flag : 1;
912 unsigned visited : 1;
914 unsigned used_flag : 1;
915 unsigned nothrow_flag : 1;
916 unsigned static_flag : 1;
917 unsigned public_flag : 1;
918 unsigned private_flag : 1;
919 unsigned protected_flag : 1;
920 unsigned deprecated_flag : 1;
921 unsigned default_def_flag : 1;
923 union {
924 /* The bits in the following structure should only be used with
925 accessor macros that constrain inputs with tree checking. */
926 struct {
927 unsigned lang_flag_0 : 1;
928 unsigned lang_flag_1 : 1;
929 unsigned lang_flag_2 : 1;
930 unsigned lang_flag_3 : 1;
931 unsigned lang_flag_4 : 1;
932 unsigned lang_flag_5 : 1;
933 unsigned lang_flag_6 : 1;
934 unsigned saturating_flag : 1;
936 unsigned unsigned_flag : 1;
937 unsigned packed_flag : 1;
938 unsigned user_align : 1;
939 unsigned nameless_flag : 1;
940 unsigned atomic_flag : 1;
941 unsigned spare0 : 3;
943 unsigned spare1 : 8;
945 /* This field is only used with TREE_TYPE nodes; the only reason it is
946 present in tree_base instead of tree_type is to save space. The size
947 of the field must be large enough to hold addr_space_t values. */
948 unsigned address_space : 8;
949 } bits;
951 /* The following fields are present in tree_base to save space. The
952 nodes using them do not require any of the flags above and so can
953 make better use of the 4-byte sized word. */
955 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
956 struct {
957 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
958 its native precision. */
959 unsigned char unextended;
961 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
962 wider precisions based on its TYPE_SIGN. */
963 unsigned char extended;
965 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
966 offset_int precision, with smaller integers being extended
967 according to their TYPE_SIGN. This is equal to one of the two
968 fields above but is cached for speed. */
969 unsigned char offset;
970 } int_length;
972 /* VEC length. This field is only used with TREE_VEC. */
973 int length;
975 /* This field is only used with VECTOR_CST. */
976 struct {
977 /* The value of VECTOR_CST_LOG2_NPATTERNS. */
978 unsigned int log2_npatterns : 8;
980 /* The value of VECTOR_CST_NELTS_PER_PATTERN. */
981 unsigned int nelts_per_pattern : 8;
983 /* For future expansion. */
984 unsigned int unused : 16;
985 } vector_cst;
987 /* SSA version number. This field is only used with SSA_NAME. */
988 unsigned int version;
990 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
991 unsigned int chrec_var;
993 /* Internal function code. */
994 enum internal_fn ifn;
996 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
997 expression trees and specify known data non-dependences. For
998 two memory references in a function they are known to not
999 alias if dependence_info.clique are equal and dependence_info.base
1000 are distinct. */
1001 struct {
1002 unsigned short clique;
1003 unsigned short base;
1004 } dependence_info;
1005 } GTY((skip(""))) u;
1008 /* The following table lists the uses of each of the above flags and
1009 for which types of nodes they are defined.
1011 addressable_flag:
1013 TREE_ADDRESSABLE in
1014 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1015 SSA_NAME
1016 all types
1017 CONSTRUCTOR, IDENTIFIER_NODE
1018 STMT_EXPR
1020 CALL_EXPR_TAILCALL in
1021 CALL_EXPR
1023 CASE_LOW_SEEN in
1024 CASE_LABEL_EXPR
1026 PREDICT_EXPR_OUTCOME in
1027 PREDICT_EXPR
1029 static_flag:
1031 TREE_STATIC in
1032 VAR_DECL, FUNCTION_DECL
1033 CONSTRUCTOR
1035 TREE_NO_TRAMPOLINE in
1036 ADDR_EXPR
1038 BINFO_VIRTUAL_P in
1039 TREE_BINFO
1041 TREE_SYMBOL_REFERENCED in
1042 IDENTIFIER_NODE
1044 CLEANUP_EH_ONLY in
1045 TARGET_EXPR, WITH_CLEANUP_EXPR
1047 TRY_CATCH_IS_CLEANUP in
1048 TRY_CATCH_EXPR
1050 ASM_INPUT_P in
1051 ASM_EXPR
1053 TYPE_REF_CAN_ALIAS_ALL in
1054 POINTER_TYPE, REFERENCE_TYPE
1056 CASE_HIGH_SEEN in
1057 CASE_LABEL_EXPR
1059 ENUM_IS_SCOPED in
1060 ENUMERAL_TYPE
1062 TRANSACTION_EXPR_OUTER in
1063 TRANSACTION_EXPR
1065 SSA_NAME_ANTI_RANGE_P in
1066 SSA_NAME
1068 MUST_TAIL_CALL in
1069 CALL_EXPR
1071 public_flag:
1073 TREE_OVERFLOW in
1074 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1076 TREE_PUBLIC in
1077 VAR_DECL, FUNCTION_DECL
1078 IDENTIFIER_NODE
1080 CONSTRUCTOR_NO_CLEARING in
1081 CONSTRUCTOR
1083 ASM_VOLATILE_P in
1084 ASM_EXPR
1086 CALL_EXPR_VA_ARG_PACK in
1087 CALL_EXPR
1089 TYPE_CACHED_VALUES_P in
1090 all types
1092 SAVE_EXPR_RESOLVED_P in
1093 SAVE_EXPR
1095 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1096 OMP_CLAUSE_LASTPRIVATE
1098 OMP_CLAUSE_PRIVATE_DEBUG in
1099 OMP_CLAUSE_PRIVATE
1101 OMP_CLAUSE_LINEAR_NO_COPYIN in
1102 OMP_CLAUSE_LINEAR
1104 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1105 OMP_CLAUSE_MAP
1107 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1108 OMP_CLAUSE_REDUCTION
1110 TRANSACTION_EXPR_RELAXED in
1111 TRANSACTION_EXPR
1113 FALLTHROUGH_LABEL_P in
1114 LABEL_DECL
1116 SSA_NAME_IS_VIRTUAL_OPERAND in
1117 SSA_NAME
1119 EXPR_LOCATION_WRAPPER_P in
1120 NON_LVALUE_EXPR, VIEW_CONVERT_EXPR
1122 private_flag:
1124 TREE_PRIVATE in
1125 all decls
1127 CALL_EXPR_RETURN_SLOT_OPT in
1128 CALL_EXPR
1130 OMP_SECTION_LAST in
1131 OMP_SECTION
1133 OMP_PARALLEL_COMBINED in
1134 OMP_PARALLEL
1136 OMP_ATOMIC_SEQ_CST in
1137 OMP_ATOMIC*
1139 OMP_CLAUSE_PRIVATE_OUTER_REF in
1140 OMP_CLAUSE_PRIVATE
1142 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1143 OMP_CLAUSE_LINEAR
1145 TYPE_REF_IS_RVALUE in
1146 REFERENCE_TYPE
1148 ENUM_IS_OPAQUE in
1149 ENUMERAL_TYPE
1151 protected_flag:
1153 TREE_PROTECTED in
1154 BLOCK
1155 all decls
1157 CALL_FROM_THUNK_P and
1158 CALL_ALLOCA_FOR_VAR_P in
1159 CALL_EXPR
1161 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1162 OMP_CLAUSE_LINEAR
1164 side_effects_flag:
1166 TREE_SIDE_EFFECTS in
1167 all expressions
1168 all decls
1169 all constants
1171 FORCED_LABEL in
1172 LABEL_DECL
1174 volatile_flag:
1176 TREE_THIS_VOLATILE in
1177 all expressions
1178 all decls
1180 TYPE_VOLATILE in
1181 all types
1183 readonly_flag:
1185 TREE_READONLY in
1186 all expressions
1187 all decls
1189 TYPE_READONLY in
1190 all types
1192 constant_flag:
1194 TREE_CONSTANT in
1195 all expressions
1196 all decls
1197 all constants
1199 TYPE_SIZES_GIMPLIFIED in
1200 all types
1202 unsigned_flag:
1204 TYPE_UNSIGNED in
1205 all types
1207 DECL_UNSIGNED in
1208 all decls
1210 asm_written_flag:
1212 TREE_ASM_WRITTEN in
1213 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1214 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1215 BLOCK, STRING_CST
1217 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1218 SSA_NAME
1220 used_flag:
1222 TREE_USED in
1223 all expressions
1224 all decls
1225 IDENTIFIER_NODE
1227 nothrow_flag:
1229 TREE_NOTHROW in
1230 CALL_EXPR
1231 FUNCTION_DECL
1233 TREE_THIS_NOTRAP in
1234 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1236 SSA_NAME_IN_FREE_LIST in
1237 SSA_NAME
1239 DECL_NONALIASED in
1240 VAR_DECL
1242 deprecated_flag:
1244 TREE_DEPRECATED in
1245 all decls
1246 all types
1248 IDENTIFIER_TRANSPARENT_ALIAS in
1249 IDENTIFIER_NODE
1251 visited:
1253 TREE_VISITED in
1254 all trees (used liberally by many passes)
1256 saturating_flag:
1258 TYPE_REVERSE_STORAGE_ORDER in
1259 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1261 TYPE_SATURATING in
1262 other types
1264 VAR_DECL_IS_VIRTUAL_OPERAND in
1265 VAR_DECL
1267 nowarning_flag:
1269 TREE_NO_WARNING in
1270 all expressions
1271 all decls
1273 TYPE_ARTIFICIAL in
1274 all types
1276 default_def_flag:
1278 TYPE_FINAL_P in
1279 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1281 TYPE_VECTOR_OPAQUE in
1282 VECTOR_TYPE
1284 SSA_NAME_IS_DEFAULT_DEF in
1285 SSA_NAME
1287 DECL_NONLOCAL_FRAME in
1288 VAR_DECL
1290 REF_REVERSE_STORAGE_ORDER in
1291 BIT_FIELD_REF, MEM_REF
1293 FUNC_ADDR_BY_DESCRIPTOR in
1294 ADDR_EXPR
1296 CALL_EXPR_BY_DESCRIPTOR in
1297 CALL_EXPR
1300 struct GTY(()) tree_typed {
1301 struct tree_base base;
1302 tree type;
1305 struct GTY(()) tree_common {
1306 struct tree_typed typed;
1307 tree chain;
1310 struct GTY(()) tree_int_cst {
1311 struct tree_typed typed;
1312 HOST_WIDE_INT val[1];
1316 struct GTY(()) tree_real_cst {
1317 struct tree_typed typed;
1318 struct real_value * real_cst_ptr;
1321 struct GTY(()) tree_fixed_cst {
1322 struct tree_typed typed;
1323 struct fixed_value * fixed_cst_ptr;
1326 struct GTY(()) tree_string {
1327 struct tree_typed typed;
1328 int length;
1329 char str[1];
1332 struct GTY(()) tree_complex {
1333 struct tree_typed typed;
1334 tree real;
1335 tree imag;
1338 struct GTY(()) tree_vector {
1339 struct tree_typed typed;
1340 tree GTY ((length ("vector_cst_encoded_nelts ((tree) &%h)"))) elts[1];
1343 struct GTY(()) tree_poly_int_cst {
1344 struct tree_typed typed;
1345 tree coeffs[NUM_POLY_INT_COEFFS];
1348 struct GTY(()) tree_identifier {
1349 struct tree_common common;
1350 struct ht_identifier id;
1353 struct GTY(()) tree_list {
1354 struct tree_common common;
1355 tree purpose;
1356 tree value;
1359 struct GTY(()) tree_vec {
1360 struct tree_common common;
1361 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1364 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1365 element. INDEX can optionally design the position of VALUE: in arrays,
1366 it is the index where VALUE has to be placed; in structures, it is the
1367 FIELD_DECL of the member. */
1368 struct GTY(()) constructor_elt {
1369 tree index;
1370 tree value;
1373 struct GTY(()) tree_constructor {
1374 struct tree_typed typed;
1375 vec<constructor_elt, va_gc> *elts;
1378 enum omp_clause_depend_kind
1380 OMP_CLAUSE_DEPEND_IN,
1381 OMP_CLAUSE_DEPEND_OUT,
1382 OMP_CLAUSE_DEPEND_INOUT,
1383 OMP_CLAUSE_DEPEND_SOURCE,
1384 OMP_CLAUSE_DEPEND_SINK,
1385 OMP_CLAUSE_DEPEND_LAST
1388 enum omp_clause_proc_bind_kind
1390 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1391 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1392 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1393 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1394 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1395 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1396 OMP_CLAUSE_PROC_BIND_LAST
1399 enum omp_clause_linear_kind
1401 OMP_CLAUSE_LINEAR_DEFAULT,
1402 OMP_CLAUSE_LINEAR_REF,
1403 OMP_CLAUSE_LINEAR_VAL,
1404 OMP_CLAUSE_LINEAR_UVAL
1407 struct GTY(()) tree_exp {
1408 struct tree_typed typed;
1409 location_t locus;
1410 tree GTY ((special ("tree_exp"),
1411 desc ("TREE_CODE ((tree) &%0)")))
1412 operands[1];
1415 /* Immediate use linking structure. This structure is used for maintaining
1416 a doubly linked list of uses of an SSA_NAME. */
1417 struct GTY(()) ssa_use_operand_t {
1418 struct ssa_use_operand_t* GTY((skip(""))) prev;
1419 struct ssa_use_operand_t* GTY((skip(""))) next;
1420 /* Immediate uses for a given SSA name are maintained as a cyclic
1421 list. To recognize the root of this list, the location field
1422 needs to point to the original SSA name. Since statements and
1423 SSA names are of different data types, we need this union. See
1424 the explanation in struct imm_use_iterator. */
1425 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1426 tree *GTY((skip(""))) use;
1429 struct GTY(()) tree_ssa_name {
1430 struct tree_typed typed;
1432 /* _DECL wrapped by this SSA name. */
1433 tree var;
1435 /* Statement that defines this SSA name. */
1436 gimple *def_stmt;
1438 /* Value range information. */
1439 union ssa_name_info_type {
1440 /* Pointer attributes used for alias analysis. */
1441 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1442 /* Value range attributes used for zero/sign extension elimination. */
1443 struct GTY ((tag ("1"))) range_info_def *range_info;
1444 } GTY ((desc ("%1.typed.type ?" \
1445 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1447 /* Immediate uses list for this SSA_NAME. */
1448 struct ssa_use_operand_t imm_uses;
1451 struct GTY(()) phi_arg_d {
1452 /* imm_use MUST be the first element in struct because we do some
1453 pointer arithmetic with it. See phi_arg_index_from_use. */
1454 struct ssa_use_operand_t imm_use;
1455 tree def;
1456 location_t locus;
1459 struct GTY(()) tree_omp_clause {
1460 struct tree_common common;
1461 location_t locus;
1462 enum omp_clause_code code;
1463 union omp_clause_subcode {
1464 enum omp_clause_default_kind default_kind;
1465 enum omp_clause_schedule_kind schedule_kind;
1466 enum omp_clause_depend_kind depend_kind;
1467 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1468 unsigned int map_kind;
1469 enum omp_clause_proc_bind_kind proc_bind_kind;
1470 enum tree_code reduction_code;
1471 enum omp_clause_linear_kind linear_kind;
1472 enum tree_code if_modifier;
1473 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1474 construct describes. */
1475 unsigned int dimension;
1476 } GTY ((skip)) subcode;
1478 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1479 usage. */
1480 gimple_seq gimple_reduction_init;
1481 gimple_seq gimple_reduction_merge;
1483 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1484 ops[1];
1487 struct GTY(()) tree_block {
1488 struct tree_base base;
1489 tree chain;
1491 unsigned abstract_flag : 1;
1492 unsigned block_num : 31;
1494 location_t locus;
1495 location_t end_locus;
1497 tree vars;
1498 vec<tree, va_gc> *nonlocalized_vars;
1500 tree subblocks;
1501 tree supercontext;
1502 tree abstract_origin;
1503 tree fragment_origin;
1504 tree fragment_chain;
1506 /* Pointer to the DWARF lexical block. */
1507 struct die_struct *die;
1510 struct GTY(()) tree_type_common {
1511 struct tree_common common;
1512 tree size;
1513 tree size_unit;
1514 tree attributes;
1515 unsigned int uid;
1517 unsigned int precision : 10;
1518 unsigned no_force_blk_flag : 1;
1519 unsigned needs_constructing_flag : 1;
1520 unsigned transparent_aggr_flag : 1;
1521 unsigned restrict_flag : 1;
1522 unsigned contains_placeholder_bits : 2;
1524 ENUM_BITFIELD(machine_mode) mode : 8;
1526 unsigned string_flag : 1;
1527 unsigned lang_flag_0 : 1;
1528 unsigned lang_flag_1 : 1;
1529 unsigned lang_flag_2 : 1;
1530 unsigned lang_flag_3 : 1;
1531 unsigned lang_flag_4 : 1;
1532 unsigned lang_flag_5 : 1;
1533 unsigned lang_flag_6 : 1;
1534 unsigned lang_flag_7 : 1;
1536 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1537 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1538 the latter being usually the larger. For ELF it is 8<<28,
1539 so we need to store the value 32 (not 31, as we need the zero
1540 as well), hence six bits. */
1541 unsigned align : 6;
1542 unsigned warn_if_not_align : 6;
1543 unsigned typeless_storage : 1;
1544 unsigned empty_flag : 1;
1545 unsigned spare : 17;
1547 alias_set_type alias_set;
1548 tree pointer_to;
1549 tree reference_to;
1550 union tree_type_symtab {
1551 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1552 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1553 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1554 tree canonical;
1555 tree next_variant;
1556 tree main_variant;
1557 tree context;
1558 tree name;
1561 struct GTY(()) tree_type_with_lang_specific {
1562 struct tree_type_common common;
1563 /* Points to a structure whose details depend on the language in use. */
1564 struct lang_type *lang_specific;
1567 struct GTY(()) tree_type_non_common {
1568 struct tree_type_with_lang_specific with_lang_specific;
1569 tree values;
1570 tree minval;
1571 tree maxval;
1572 tree lang_1;
1575 struct GTY (()) tree_binfo {
1576 struct tree_common common;
1578 tree offset;
1579 tree vtable;
1580 tree virtuals;
1581 tree vptr_field;
1582 vec<tree, va_gc> *base_accesses;
1583 tree inheritance;
1585 tree vtt_subvtt;
1586 tree vtt_vptr;
1588 vec<tree, va_gc> base_binfos;
1591 struct GTY(()) tree_decl_minimal {
1592 struct tree_common common;
1593 location_t locus;
1594 unsigned int uid;
1595 tree name;
1596 tree context;
1599 struct GTY(()) tree_decl_common {
1600 struct tree_decl_minimal common;
1601 tree size;
1603 ENUM_BITFIELD(machine_mode) mode : 8;
1605 unsigned nonlocal_flag : 1;
1606 unsigned virtual_flag : 1;
1607 unsigned ignored_flag : 1;
1608 unsigned abstract_flag : 1;
1609 unsigned artificial_flag : 1;
1610 unsigned preserve_flag: 1;
1611 unsigned debug_expr_is_from : 1;
1613 unsigned lang_flag_0 : 1;
1614 unsigned lang_flag_1 : 1;
1615 unsigned lang_flag_2 : 1;
1616 unsigned lang_flag_3 : 1;
1617 unsigned lang_flag_4 : 1;
1618 unsigned lang_flag_5 : 1;
1619 unsigned lang_flag_6 : 1;
1620 unsigned lang_flag_7 : 1;
1621 unsigned lang_flag_8 : 1;
1623 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER
1624 IN TRANSLATION_UNIT_DECL, this is TRANSLATION_UNIT_WARN_EMPTY_P. */
1625 unsigned decl_flag_0 : 1;
1626 /* In FIELD_DECL, this is DECL_BIT_FIELD
1627 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1628 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1629 unsigned decl_flag_1 : 1;
1630 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1631 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1632 DECL_HAS_VALUE_EXPR_P. */
1633 unsigned decl_flag_2 : 1;
1634 /* In FIELD_DECL, this is DECL_PADDING_P. */
1635 unsigned decl_flag_3 : 1;
1636 /* Logically, these two would go in a theoretical base shared by var and
1637 parm decl. */
1638 unsigned gimple_reg_flag : 1;
1639 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1640 unsigned decl_by_reference_flag : 1;
1641 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1642 unsigned decl_read_flag : 1;
1643 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1644 unsigned decl_nonshareable_flag : 1;
1646 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1647 unsigned int off_align : 6;
1649 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1650 unsigned int align : 6;
1652 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1653 TYPE_WARN_IF_NOT_ALIGN. */
1654 unsigned int warn_if_not_align : 6;
1656 /* 14 bits unused. */
1658 /* UID for points-to sets, stable over copying from inlining. */
1659 unsigned int pt_uid;
1661 tree size_unit;
1662 tree initial;
1663 tree attributes;
1664 tree abstract_origin;
1666 /* Points to a structure whose details depend on the language in use. */
1667 struct lang_decl *lang_specific;
1670 struct GTY(()) tree_decl_with_rtl {
1671 struct tree_decl_common common;
1672 rtx rtl;
1675 struct GTY(()) tree_field_decl {
1676 struct tree_decl_common common;
1678 tree offset;
1679 tree bit_field_type;
1680 tree qualifier;
1681 tree bit_offset;
1682 tree fcontext;
1685 struct GTY(()) tree_label_decl {
1686 struct tree_decl_with_rtl common;
1687 int label_decl_uid;
1688 int eh_landing_pad_nr;
1691 struct GTY(()) tree_result_decl {
1692 struct tree_decl_with_rtl common;
1695 struct GTY(()) tree_const_decl {
1696 struct tree_decl_common common;
1699 struct GTY(()) tree_parm_decl {
1700 struct tree_decl_with_rtl common;
1701 rtx incoming_rtl;
1704 struct GTY(()) tree_decl_with_vis {
1705 struct tree_decl_with_rtl common;
1706 tree assembler_name;
1707 struct symtab_node *symtab_node;
1709 /* Belong to VAR_DECL exclusively. */
1710 unsigned defer_output : 1;
1711 unsigned hard_register : 1;
1712 unsigned common_flag : 1;
1713 unsigned in_text_section : 1;
1714 unsigned in_constant_pool : 1;
1715 unsigned dllimport_flag : 1;
1716 /* Don't belong to VAR_DECL exclusively. */
1717 unsigned weak_flag : 1;
1719 unsigned seen_in_bind_expr : 1;
1720 unsigned comdat_flag : 1;
1721 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1722 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1723 unsigned visibility_specified : 1;
1725 /* Belong to FUNCTION_DECL exclusively. */
1726 unsigned init_priority_p : 1;
1727 /* Used by C++ only. Might become a generic decl flag. */
1728 unsigned shadowed_for_var_p : 1;
1729 /* Belong to FUNCTION_DECL exclusively. */
1730 unsigned cxx_constructor : 1;
1731 /* Belong to FUNCTION_DECL exclusively. */
1732 unsigned cxx_destructor : 1;
1733 /* Belong to FUNCTION_DECL exclusively. */
1734 unsigned final : 1;
1735 /* Belong to FUNCTION_DECL exclusively. */
1736 unsigned regdecl_flag : 1;
1737 /* 14 unused bits. */
1740 struct GTY(()) tree_var_decl {
1741 struct tree_decl_with_vis common;
1744 struct GTY(()) tree_decl_non_common {
1745 struct tree_decl_with_vis common;
1746 /* Almost all FE's use this. */
1747 tree result;
1750 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1751 arguments/result/saved_tree fields by front ends. It was either inherit
1752 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1753 which seemed a bit strange. */
1755 struct GTY(()) tree_function_decl {
1756 struct tree_decl_non_common common;
1758 struct function *f;
1760 /* Arguments of the function. */
1761 tree arguments;
1762 /* The personality function. Used for stack unwinding. */
1763 tree personality;
1765 /* Function specific options that are used by this function. */
1766 tree function_specific_target; /* target options */
1767 tree function_specific_optimization; /* optimization options */
1769 /* Generic function body. */
1770 tree saved_tree;
1771 /* Index within a virtual table. */
1772 tree vindex;
1774 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1775 DECL_FUNCTION_CODE. Otherwise unused.
1776 ??? The bitfield needs to be able to hold all target function
1777 codes as well. */
1778 ENUM_BITFIELD(built_in_function) function_code : 12;
1779 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1781 unsigned static_ctor_flag : 1;
1782 unsigned static_dtor_flag : 1;
1784 unsigned uninlinable : 1;
1785 unsigned possibly_inlined : 1;
1786 unsigned novops_flag : 1;
1787 unsigned returns_twice_flag : 1;
1788 unsigned malloc_flag : 1;
1789 unsigned operator_new_flag : 1;
1790 unsigned declared_inline_flag : 1;
1791 unsigned no_inline_warning_flag : 1;
1793 unsigned no_instrument_function_entry_exit : 1;
1794 unsigned no_limit_stack : 1;
1795 unsigned disregard_inline_limits : 1;
1796 unsigned pure_flag : 1;
1797 unsigned looping_const_or_pure_flag : 1;
1798 unsigned has_debug_args_flag : 1;
1799 unsigned tm_clone_flag : 1;
1800 unsigned versioned_function : 1;
1801 /* No bits left. */
1804 struct GTY(()) tree_translation_unit_decl {
1805 struct tree_decl_common common;
1806 /* Source language of this translation unit. Used for DWARF output. */
1807 const char * GTY((skip(""))) language;
1808 /* TODO: Non-optimization used to build this translation unit. */
1809 /* TODO: Root of a partial DWARF tree for global types and decls. */
1812 struct GTY(()) tree_type_decl {
1813 struct tree_decl_non_common common;
1817 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1819 struct tree_statement_list_node *prev;
1820 struct tree_statement_list_node *next;
1821 tree stmt;
1824 struct GTY(()) tree_statement_list
1826 struct tree_typed typed;
1827 struct tree_statement_list_node *head;
1828 struct tree_statement_list_node *tail;
1832 /* Optimization options used by a function. */
1834 struct GTY(()) tree_optimization_option {
1835 struct tree_base base;
1837 /* The optimization options used by the user. */
1838 struct cl_optimization *opts;
1840 /* Target optabs for this set of optimization options. This is of
1841 type `struct target_optabs *'. */
1842 void *GTY ((atomic)) optabs;
1844 /* The value of this_target_optabs against which the optabs above were
1845 generated. */
1846 struct target_optabs *GTY ((skip)) base_optabs;
1849 /* Forward declaration, defined in target-globals.h. */
1851 struct GTY(()) target_globals;
1853 /* Target options used by a function. */
1855 struct GTY(()) tree_target_option {
1856 struct tree_base base;
1858 /* Target globals for the corresponding target option. */
1859 struct target_globals *globals;
1861 /* The optimization options used by the user. */
1862 struct cl_target_option *opts;
1865 /* Define the overall contents of a tree node.
1866 It may be any of the structures declared above
1867 for various types of node. */
1868 union GTY ((ptr_alias (union lang_tree_node),
1869 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
1870 struct tree_base GTY ((tag ("TS_BASE"))) base;
1871 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
1872 struct tree_common GTY ((tag ("TS_COMMON"))) common;
1873 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
1874 struct tree_poly_int_cst GTY ((tag ("TS_POLY_INT_CST"))) poly_int_cst;
1875 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
1876 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
1877 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
1878 struct tree_string GTY ((tag ("TS_STRING"))) string;
1879 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
1880 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
1881 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
1882 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
1883 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
1884 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
1885 decl_non_common;
1886 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
1887 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
1888 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
1889 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
1890 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
1891 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
1892 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
1893 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
1894 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
1895 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1896 translation_unit_decl;
1897 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
1898 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1899 type_with_lang_specific;
1900 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
1901 type_non_common;
1902 struct tree_list GTY ((tag ("TS_LIST"))) list;
1903 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
1904 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
1905 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
1906 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
1907 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
1908 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
1909 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
1910 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
1911 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
1912 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
1915 /* Structure describing an attribute and a function to handle it. */
1916 struct attribute_spec {
1917 /* The name of the attribute (without any leading or trailing __),
1918 or NULL to mark the end of a table of attributes. */
1919 const char *name;
1920 /* The minimum length of the list of arguments of the attribute. */
1921 int min_length;
1922 /* The maximum length of the list of arguments of the attribute
1923 (-1 for no maximum). */
1924 int max_length;
1925 /* Whether this attribute requires a DECL. If it does, it will be passed
1926 from types of DECLs, function return types and array element types to
1927 the DECLs, function types and array types respectively; but when
1928 applied to a type in any other circumstances, it will be ignored with
1929 a warning. (If greater control is desired for a given attribute,
1930 this should be false, and the flags argument to the handler may be
1931 used to gain greater control in that case.) */
1932 bool decl_required;
1933 /* Whether this attribute requires a type. If it does, it will be passed
1934 from a DECL to the type of that DECL. */
1935 bool type_required;
1936 /* Whether this attribute requires a function (or method) type. If it does,
1937 it will be passed from a function pointer type to the target type,
1938 and from a function return type (which is not itself a function
1939 pointer type) to the function type. */
1940 bool function_type_required;
1941 /* Specifies if attribute affects type's identity. */
1942 bool affects_type_identity;
1943 /* Function to handle this attribute. NODE points to the node to which
1944 the attribute is to be applied. If a DECL, it should be modified in
1945 place; if a TYPE, a copy should be created. NAME is the name of the
1946 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1947 of the arguments (which may be NULL). FLAGS gives further information
1948 about the context of the attribute. Afterwards, the attributes will
1949 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1950 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1951 as well as in any other cases when the attributes should not be added
1952 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1953 applied to another type or DECL later may be returned;
1954 otherwise the return value should be NULL_TREE. This pointer may be
1955 NULL if no special handling is required beyond the checks implied
1956 by the rest of this structure. */
1957 tree (*handler) (tree *node, tree name, tree args,
1958 int flags, bool *no_add_attrs);
1960 /* Specifies the name of an attribute that's mutually exclusive with
1961 this one, and whether the relationship applies to the function,
1962 variable, or type form of the attribute. */
1963 struct exclusions {
1964 const char *name;
1965 bool function;
1966 bool variable;
1967 bool type;
1970 /* An array of attribute exclusions describing names of other attributes
1971 that this attribute is mutually exclusive with. */
1972 const exclusions *exclude;
1975 /* These functions allow a front-end to perform a manual layout of a
1976 RECORD_TYPE. (For instance, if the placement of subsequent fields
1977 depends on the placement of fields so far.) Begin by calling
1978 start_record_layout. Then, call place_field for each of the
1979 fields. Then, call finish_record_layout. See layout_type for the
1980 default way in which these functions are used. */
1981 typedef struct record_layout_info_s {
1982 /* The RECORD_TYPE that we are laying out. */
1983 tree t;
1984 /* The offset into the record so far, in bytes, not including bits in
1985 BITPOS. */
1986 tree offset;
1987 /* The last known alignment of SIZE. */
1988 unsigned int offset_align;
1989 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1990 tree bitpos;
1991 /* The alignment of the record so far, in bits. */
1992 unsigned int record_align;
1993 /* The alignment of the record so far, ignoring #pragma pack and
1994 __attribute__ ((packed)), in bits. */
1995 unsigned int unpacked_align;
1996 /* The previous field laid out. */
1997 tree prev_field;
1998 /* The static variables (i.e., class variables, as opposed to
1999 instance variables) encountered in T. */
2000 vec<tree, va_gc> *pending_statics;
2001 /* Bits remaining in the current alignment group */
2002 int remaining_in_alignment;
2003 /* True if we've seen a packed field that didn't have normal
2004 alignment anyway. */
2005 int packed_maybe_necessary;
2006 } *record_layout_info;
2008 /* Iterator for going through the function arguments. */
2009 struct function_args_iterator {
2010 tree next; /* TREE_LIST pointing to the next argument */
2013 /* Structures to map from a tree to another tree. */
2014 struct GTY(()) tree_map_base {
2015 tree from;
2018 /* Map from a tree to another tree. */
2020 struct GTY((for_user)) tree_map {
2021 struct tree_map_base base;
2022 unsigned int hash;
2023 tree to;
2026 /* Map from a decl tree to another tree. */
2027 struct GTY((for_user)) tree_decl_map {
2028 struct tree_map_base base;
2029 tree to;
2032 /* Map from a tree to an int. */
2033 struct GTY((for_user)) tree_int_map {
2034 struct tree_map_base base;
2035 unsigned int to;
2038 /* Map from a decl tree to a tree vector. */
2039 struct GTY((for_user)) tree_vec_map {
2040 struct tree_map_base base;
2041 vec<tree, va_gc> *to;
2044 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2045 have to go towards the end of tree.h so that union tree_node is fully
2046 defined by this point. */
2048 /* Structure containing iterator state. */
2049 struct call_expr_arg_iterator {
2050 tree t; /* the call_expr */
2051 int n; /* argument count */
2052 int i; /* next argument index */
2055 struct const_call_expr_arg_iterator {
2056 const_tree t; /* the call_expr */
2057 int n; /* argument count */
2058 int i; /* next argument index */
2061 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2062 function, and flags. */
2063 struct GTY(()) builtin_info_type {
2064 tree decl;
2065 /* Whether the user can use <xxx> instead of explicitly using calls
2066 to __builtin_<xxx>. */
2067 unsigned implicit_p : 1;
2068 /* Whether the user has provided a declaration of <xxx>. */
2069 unsigned declared_p : 1;
2072 /* Information about a _FloatN or _FloatNx type that may be
2073 supported. */
2074 struct floatn_type_info {
2075 /* The number N in the type name. */
2076 int n;
2077 /* Whether it is an extended type _FloatNx (true) or an interchange
2078 type (false). */
2079 bool extended;
2083 /*---------------------------------------------------------------------------
2084 Global variables
2085 ---------------------------------------------------------------------------*/
2086 /* Matrix describing the structures contained in a given tree code. */
2087 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2089 /* Class of tree given its code. */
2090 extern const enum tree_code_class tree_code_type[];
2092 /* Each tree code class has an associated string representation.
2093 These must correspond to the tree_code_class entries. */
2094 extern const char *const tree_code_class_strings[];
2096 /* Number of argument-words in each kind of tree-node. */
2097 extern const unsigned char tree_code_length[];
2099 /* Vector of all alias pairs for global symbols. */
2100 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2102 /* Names of all the built_in classes. */
2103 extern const char *const built_in_class_names[BUILT_IN_LAST];
2105 /* Names of all the built_in functions. */
2106 extern const char * built_in_names[(int) END_BUILTINS];
2108 /* Number of operands and names for each OMP_CLAUSE node. */
2109 extern unsigned const char omp_clause_num_ops[];
2110 extern const char * const omp_clause_code_name[];
2112 /* A vector of all translation-units. */
2113 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2115 /* Vector of standard trees used by the C compiler. */
2116 extern GTY(()) tree global_trees[TI_MAX];
2118 /* The standard C integer types. Use integer_type_kind to index into
2119 this array. */
2120 extern GTY(()) tree integer_types[itk_none];
2122 /* Types used to represent sizes. */
2123 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2125 /* Arrays for keeping track of tree node statistics. */
2126 extern uint64_t tree_node_counts[];
2127 extern uint64_t tree_node_sizes[];
2129 /* True if we are in gimple form and the actions of the folders need to
2130 be restricted. False if we are not in gimple form and folding is not
2131 restricted to creating gimple expressions. */
2132 extern bool in_gimple_form;
2134 /* Functional interface to the builtin functions. */
2135 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2137 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2138 extern unsigned int maximum_field_alignment;
2140 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2141 extern GTY(()) tree current_function_decl;
2143 /* Nonzero means a FUNC_BEGIN label was emitted. */
2144 extern GTY(()) const char * current_function_func_begin_label;
2146 /* Information about the _FloatN and _FloatNx types. */
2147 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2149 #endif // GCC_TREE_CORE_H