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date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* Core data structures for the 'tree' type.
2 Copyright (C) 1989-2017 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
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.
10
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.
15
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/>. */
19
20 #ifndef GCC_TREE_CORE_H
21 #define GCC_TREE_CORE_H
22
23 #include "symtab.h"
24
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. */
28
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;
38
39
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)
48
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)
53
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)
58
59 /* Nonzero if this call will never return. */
60 #define ECF_NORETURN (1 << 3)
61
62 /* Nonzero if this is a call to malloc or a related function. */
63 #define ECF_MALLOC (1 << 4)
64
65 /* Nonzero if it is plausible that this is a call to alloca. */
66 #define ECF_MAY_BE_ALLOCA (1 << 5)
67
68 /* Nonzero if this is a call to a function that won't throw an exception. */
69 #define ECF_NOTHROW (1 << 6)
70
71 /* Nonzero if this is a call to setjmp or a related function. */
72 #define ECF_RETURNS_TWICE (1 << 7)
73
74 /* Nonzero if this call replaces the current stack frame. */
75 #define ECF_SIBCALL (1 << 8)
76
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)
80
81 /* The function does not lead to calls within current function unit. */
82 #define ECF_LEAF (1 << 10)
83
84 /* Nonzero if this call returns its first argument. */
85 #define ECF_RET1 (1 << 11)
86
87 /* Nonzero if this call does not affect transactions. */
88 #define ECF_TM_PURE (1 << 12)
89
90 /* Nonzero if this call is into the transaction runtime library. */
91 #define ECF_TM_BUILTIN (1 << 13)
92
93 /* Nonzero if this is an indirect call by descriptor. */
94 #define ECF_BY_DESCRIPTOR (1 << 14)
95
96 /* Nonzero if this is a cold function. */
97 #define ECF_COLD (1 << 15)
98
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)
103
104 /* Nonzero if memory reached by the argument is not clobbered. */
105 #define EAF_NOCLOBBER (1 << 1)
106
107 /* Nonzero if the argument does not escape. */
108 #define EAF_NOESCAPE (1 << 2)
109
110 /* Nonzero if the argument is not used by the function. */
111 #define EAF_UNUSED (1 << 3)
112
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)
117
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)
121
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)
125
126
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,
133
134 enum tree_code {
135 #include "all-tree.def"
136 MAX_TREE_CODES
137 };
138
139 #undef DEFTREECODE
140 #undef END_OF_BASE_TREE_CODES
141
142 /* Number of language-independent tree codes. */
143 #define NUM_TREE_CODES \
144 ((int) LAST_AND_UNUSED_TREE_CODE)
145
146 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) \
147 (tree_contains_struct[(CODE)][(STRUCT)])
148
149
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
157 };
158
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)
162
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
169 BEGIN_CHKP_BUILTINS,
170
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"
175
176 END_CHKP_BUILTINS = BEGIN_CHKP_BUILTINS * 2 + 1,
177
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,
185
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,
191
192 /* Upper bound on non-language-specific builtins. */
193 END_BUILTINS
194 };
195
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
201 };
202
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"
212
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"
217
218 #define DEF_INTERNAL_FN(CODE, FLAGS, FNSPEC) \
219 CFN_##CODE = int (END_BUILTINS) + int (IFN_##CODE),
220 #include "internal-fn.def"
221
222 CFN_LAST
223 };
224
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. */
242 };
243
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,
250
251 /* OpenACC/OpenMP clause: private (variable_list). */
252 OMP_CLAUSE_PRIVATE,
253
254 /* OpenMP clause: shared (variable_list). */
255 OMP_CLAUSE_SHARED,
256
257 /* OpenACC/OpenMP clause: firstprivate (variable_list). */
258 OMP_CLAUSE_FIRSTPRIVATE,
259
260 /* OpenMP clause: lastprivate (variable_list). */
261 OMP_CLAUSE_LASTPRIVATE,
262
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,
274
275 /* OpenMP clause: copyin (variable_list). */
276 OMP_CLAUSE_COPYIN,
277
278 /* OpenMP clause: copyprivate (variable_list). */
279 OMP_CLAUSE_COPYPRIVATE,
280
281 /* OpenMP clause: linear (variable-list[:linear-step]). */
282 OMP_CLAUSE_LINEAR,
283
284 /* OpenMP clause: aligned (variable-list[:alignment]). */
285 OMP_CLAUSE_ALIGNED,
286
287 /* OpenMP clause: depend ({in,out,inout}:variable-list). */
288 OMP_CLAUSE_DEPEND,
289
290 /* OpenMP clause: uniform (argument-list). */
291 OMP_CLAUSE_UNIFORM,
292
293 /* OpenMP clause: to (extended-list).
294 Only when it appears in declare target. */
295 OMP_CLAUSE_TO_DECLARE,
296
297 /* OpenMP clause: link (variable-list). */
298 OMP_CLAUSE_LINK,
299
300 /* OpenMP clause: from (variable-list). */
301 OMP_CLAUSE_FROM,
302
303 /* OpenMP clause: to (variable-list). */
304 OMP_CLAUSE_TO,
305
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).
310
311 OpenMP clause: map ({alloc:,to:,from:,tofrom:,}variable-list). */
312 OMP_CLAUSE_MAP,
313
314 /* OpenACC clause: use_device (variable_list).
315 OpenMP clause: use_device_ptr (variable-list). */
316 OMP_CLAUSE_USE_DEVICE_PTR,
317
318 /* OpenMP clause: is_device_ptr (variable-list). */
319 OMP_CLAUSE_IS_DEVICE_PTR,
320
321 /* Internal structure to hold OpenACC cache directive's variable-list.
322 #pragma acc cache (variable-list). */
323 OMP_CLAUSE__CACHE_,
324
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,
332
333 /* OpenACC clause: async [(integer-expression)]. */
334 OMP_CLAUSE_ASYNC,
335
336 /* OpenACC clause: wait [(integer-expression-list)]. */
337 OMP_CLAUSE_WAIT,
338
339 /* OpenACC clause: auto. */
340 OMP_CLAUSE_AUTO,
341
342 /* OpenACC clause: seq. */
343 OMP_CLAUSE_SEQ,
344
345 /* Internal clause: temporary for combined loops expansion. */
346 OMP_CLAUSE__LOOPTEMP_,
347
348 /* OpenACC/OpenMP clause: if (scalar-expression). */
349 OMP_CLAUSE_IF,
350
351 /* OpenMP clause: num_threads (integer-expression). */
352 OMP_CLAUSE_NUM_THREADS,
353
354 /* OpenMP clause: schedule. */
355 OMP_CLAUSE_SCHEDULE,
356
357 /* OpenMP clause: nowait. */
358 OMP_CLAUSE_NOWAIT,
359
360 /* OpenMP clause: ordered [(constant-integer-expression)]. */
361 OMP_CLAUSE_ORDERED,
362
363 /* OpenACC/OpenMP clause: default. */
364 OMP_CLAUSE_DEFAULT,
365
366 /* OpenACC/OpenMP clause: collapse (constant-integer-expression). */
367 OMP_CLAUSE_COLLAPSE,
368
369 /* OpenMP clause: untied. */
370 OMP_CLAUSE_UNTIED,
371
372 /* OpenMP clause: final (scalar-expression). */
373 OMP_CLAUSE_FINAL,
374
375 /* OpenMP clause: mergeable. */
376 OMP_CLAUSE_MERGEABLE,
377
378 /* OpenMP clause: device (integer-expression). */
379 OMP_CLAUSE_DEVICE,
380
381 /* OpenMP clause: dist_schedule (static[:chunk-size]). */
382 OMP_CLAUSE_DIST_SCHEDULE,
383
384 /* OpenMP clause: inbranch. */
385 OMP_CLAUSE_INBRANCH,
386
387 /* OpenMP clause: notinbranch. */
388 OMP_CLAUSE_NOTINBRANCH,
389
390 /* OpenMP clause: num_teams(integer-expression). */
391 OMP_CLAUSE_NUM_TEAMS,
392
393 /* OpenMP clause: thread_limit(integer-expression). */
394 OMP_CLAUSE_THREAD_LIMIT,
395
396 /* OpenMP clause: proc_bind ({master,close,spread}). */
397 OMP_CLAUSE_PROC_BIND,
398
399 /* OpenMP clause: safelen (constant-integer-expression). */
400 OMP_CLAUSE_SAFELEN,
401
402 /* OpenMP clause: simdlen (constant-integer-expression). */
403 OMP_CLAUSE_SIMDLEN,
404
405 /* OpenMP clause: for. */
406 OMP_CLAUSE_FOR,
407
408 /* OpenMP clause: parallel. */
409 OMP_CLAUSE_PARALLEL,
410
411 /* OpenMP clause: sections. */
412 OMP_CLAUSE_SECTIONS,
413
414 /* OpenMP clause: taskgroup. */
415 OMP_CLAUSE_TASKGROUP,
416
417 /* OpenMP clause: priority (integer-expression). */
418 OMP_CLAUSE_PRIORITY,
419
420 /* OpenMP clause: grainsize (integer-expression). */
421 OMP_CLAUSE_GRAINSIZE,
422
423 /* OpenMP clause: num_tasks (integer-expression). */
424 OMP_CLAUSE_NUM_TASKS,
425
426 /* OpenMP clause: nogroup. */
427 OMP_CLAUSE_NOGROUP,
428
429 /* OpenMP clause: threads. */
430 OMP_CLAUSE_THREADS,
431
432 /* OpenMP clause: simd. */
433 OMP_CLAUSE_SIMD,
434
435 /* OpenMP clause: hint (integer-expression). */
436 OMP_CLAUSE_HINT,
437
438 /* OpenMP clause: defaultmap (tofrom: scalar). */
439 OMP_CLAUSE_DEFAULTMAP,
440
441 /* Internally used only clause, holding SIMD uid. */
442 OMP_CLAUSE__SIMDUID_,
443
444 /* Internally used only clause, flag whether this is SIMT simd
445 loop or not. */
446 OMP_CLAUSE__SIMT_,
447
448 /* Internally used only clause, holding _Cilk_for # of iterations
449 on OMP_PARALLEL. */
450 OMP_CLAUSE__CILK_FOR_COUNT_,
451
452 /* OpenACC clause: independent. */
453 OMP_CLAUSE_INDEPENDENT,
454
455 /* OpenACC clause: worker [( [num:] integer-expression)]. */
456 OMP_CLAUSE_WORKER,
457
458 /* OpenACC clause: vector [( [length:] integer-expression)]. */
459 OMP_CLAUSE_VECTOR,
460
461 /* OpenACC clause: num_gangs (integer-expression). */
462 OMP_CLAUSE_NUM_GANGS,
463
464 /* OpenACC clause: num_workers (integer-expression). */
465 OMP_CLAUSE_NUM_WORKERS,
466
467 /* OpenACC clause: vector_length (integer-expression). */
468 OMP_CLAUSE_VECTOR_LENGTH,
469
470 /* OpenACC clause: tile ( size-expr-list ). */
471 OMP_CLAUSE_TILE,
472
473 /* OpenMP internal-only clause to specify grid dimensions of a gridified
474 kernel. */
475 OMP_CLAUSE__GRIDDIM_
476 };
477
478 #undef DEFTREESTRUCT
479 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
480 enum tree_node_structure_enum {
481 #include "treestruct.def"
482 LAST_TS_ENUM
483 };
484 #undef DEFTREESTRUCT
485
486 enum omp_clause_schedule_kind {
487 OMP_CLAUSE_SCHEDULE_STATIC,
488 OMP_CLAUSE_SCHEDULE_DYNAMIC,
489 OMP_CLAUSE_SCHEDULE_GUIDED,
490 OMP_CLAUSE_SCHEDULE_AUTO,
491 OMP_CLAUSE_SCHEDULE_RUNTIME,
492 OMP_CLAUSE_SCHEDULE_CILKFOR,
493 OMP_CLAUSE_SCHEDULE_MASK = (1 << 3) - 1,
494 OMP_CLAUSE_SCHEDULE_MONOTONIC = (1 << 3),
495 OMP_CLAUSE_SCHEDULE_NONMONOTONIC = (1 << 4),
496 OMP_CLAUSE_SCHEDULE_LAST = 2 * OMP_CLAUSE_SCHEDULE_NONMONOTONIC - 1
497 };
498
499 enum omp_clause_default_kind {
500 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
501 OMP_CLAUSE_DEFAULT_SHARED,
502 OMP_CLAUSE_DEFAULT_NONE,
503 OMP_CLAUSE_DEFAULT_PRIVATE,
504 OMP_CLAUSE_DEFAULT_FIRSTPRIVATE,
505 OMP_CLAUSE_DEFAULT_PRESENT,
506 OMP_CLAUSE_DEFAULT_LAST
507 };
508
509 /* There is a TYPE_QUAL value for each type qualifier. They can be
510 combined by bitwise-or to form the complete set of qualifiers for a
511 type. */
512 enum cv_qualifier {
513 TYPE_UNQUALIFIED = 0x0,
514 TYPE_QUAL_CONST = 0x1,
515 TYPE_QUAL_VOLATILE = 0x2,
516 TYPE_QUAL_RESTRICT = 0x4,
517 TYPE_QUAL_ATOMIC = 0x8
518 };
519
520 /* Standard named or nameless data types of the C compiler. */
521 enum tree_index {
522 TI_ERROR_MARK,
523 TI_INTQI_TYPE,
524 TI_INTHI_TYPE,
525 TI_INTSI_TYPE,
526 TI_INTDI_TYPE,
527 TI_INTTI_TYPE,
528
529 TI_UINTQI_TYPE,
530 TI_UINTHI_TYPE,
531 TI_UINTSI_TYPE,
532 TI_UINTDI_TYPE,
533 TI_UINTTI_TYPE,
534
535 TI_ATOMICQI_TYPE,
536 TI_ATOMICHI_TYPE,
537 TI_ATOMICSI_TYPE,
538 TI_ATOMICDI_TYPE,
539 TI_ATOMICTI_TYPE,
540
541 TI_UINT16_TYPE,
542 TI_UINT32_TYPE,
543 TI_UINT64_TYPE,
544
545 TI_VOID,
546
547 TI_INTEGER_ZERO,
548 TI_INTEGER_ONE,
549 TI_INTEGER_THREE,
550 TI_INTEGER_MINUS_ONE,
551 TI_NULL_POINTER,
552
553 TI_SIZE_ZERO,
554 TI_SIZE_ONE,
555
556 TI_BITSIZE_ZERO,
557 TI_BITSIZE_ONE,
558 TI_BITSIZE_UNIT,
559
560 TI_PUBLIC,
561 TI_PROTECTED,
562 TI_PRIVATE,
563
564 TI_BOOLEAN_FALSE,
565 TI_BOOLEAN_TRUE,
566
567 TI_FLOAT_TYPE,
568 TI_DOUBLE_TYPE,
569 TI_LONG_DOUBLE_TYPE,
570
571 /* The _FloatN and _FloatNx types must be consecutive, and in the
572 same sequence as the corresponding complex types, which must also
573 be consecutive; _FloatN must come before _FloatNx; the order must
574 also be the same as in the floatn_nx_types array and the RID_*
575 values in c-common.h. This is so that iterations over these
576 types work as intended. */
577 TI_FLOAT16_TYPE,
578 TI_FLOATN_TYPE_FIRST = TI_FLOAT16_TYPE,
579 TI_FLOATN_NX_TYPE_FIRST = TI_FLOAT16_TYPE,
580 TI_FLOAT32_TYPE,
581 TI_FLOAT64_TYPE,
582 TI_FLOAT128_TYPE,
583 TI_FLOATN_TYPE_LAST = TI_FLOAT128_TYPE,
584 #define NUM_FLOATN_TYPES (TI_FLOATN_TYPE_LAST - TI_FLOATN_TYPE_FIRST + 1)
585 TI_FLOAT32X_TYPE,
586 TI_FLOATNX_TYPE_FIRST = TI_FLOAT32X_TYPE,
587 TI_FLOAT64X_TYPE,
588 TI_FLOAT128X_TYPE,
589 TI_FLOATNX_TYPE_LAST = TI_FLOAT128X_TYPE,
590 TI_FLOATN_NX_TYPE_LAST = TI_FLOAT128X_TYPE,
591 #define NUM_FLOATNX_TYPES (TI_FLOATNX_TYPE_LAST - TI_FLOATNX_TYPE_FIRST + 1)
592 #define NUM_FLOATN_NX_TYPES (TI_FLOATN_NX_TYPE_LAST \
593 - TI_FLOATN_NX_TYPE_FIRST \
594 + 1)
595
596 /* Put the complex types after their component types, so that in (sequential)
597 tree streaming we can assert that their component types have already been
598 handled (see tree-streamer.c:record_common_node). */
599 TI_COMPLEX_INTEGER_TYPE,
600 TI_COMPLEX_FLOAT_TYPE,
601 TI_COMPLEX_DOUBLE_TYPE,
602 TI_COMPLEX_LONG_DOUBLE_TYPE,
603
604 TI_COMPLEX_FLOAT16_TYPE,
605 TI_COMPLEX_FLOATN_NX_TYPE_FIRST = TI_COMPLEX_FLOAT16_TYPE,
606 TI_COMPLEX_FLOAT32_TYPE,
607 TI_COMPLEX_FLOAT64_TYPE,
608 TI_COMPLEX_FLOAT128_TYPE,
609 TI_COMPLEX_FLOAT32X_TYPE,
610 TI_COMPLEX_FLOAT64X_TYPE,
611 TI_COMPLEX_FLOAT128X_TYPE,
612
613 TI_FLOAT_PTR_TYPE,
614 TI_DOUBLE_PTR_TYPE,
615 TI_LONG_DOUBLE_PTR_TYPE,
616 TI_INTEGER_PTR_TYPE,
617
618 TI_VOID_TYPE,
619 TI_PTR_TYPE,
620 TI_CONST_PTR_TYPE,
621 TI_SIZE_TYPE,
622 TI_PID_TYPE,
623 TI_PTRDIFF_TYPE,
624 TI_VA_LIST_TYPE,
625 TI_VA_LIST_GPR_COUNTER_FIELD,
626 TI_VA_LIST_FPR_COUNTER_FIELD,
627 TI_BOOLEAN_TYPE,
628 TI_FILEPTR_TYPE,
629 TI_CONST_TM_PTR_TYPE,
630 TI_FENV_T_PTR_TYPE,
631 TI_CONST_FENV_T_PTR_TYPE,
632 TI_FEXCEPT_T_PTR_TYPE,
633 TI_CONST_FEXCEPT_T_PTR_TYPE,
634 TI_POINTER_SIZED_TYPE,
635
636 TI_POINTER_BOUNDS_TYPE,
637
638 TI_DFLOAT32_TYPE,
639 TI_DFLOAT64_TYPE,
640 TI_DFLOAT128_TYPE,
641 TI_DFLOAT32_PTR_TYPE,
642 TI_DFLOAT64_PTR_TYPE,
643 TI_DFLOAT128_PTR_TYPE,
644
645 TI_VOID_LIST_NODE,
646
647 TI_MAIN_IDENTIFIER,
648
649 TI_SAT_SFRACT_TYPE,
650 TI_SAT_FRACT_TYPE,
651 TI_SAT_LFRACT_TYPE,
652 TI_SAT_LLFRACT_TYPE,
653 TI_SAT_USFRACT_TYPE,
654 TI_SAT_UFRACT_TYPE,
655 TI_SAT_ULFRACT_TYPE,
656 TI_SAT_ULLFRACT_TYPE,
657 TI_SFRACT_TYPE,
658 TI_FRACT_TYPE,
659 TI_LFRACT_TYPE,
660 TI_LLFRACT_TYPE,
661 TI_USFRACT_TYPE,
662 TI_UFRACT_TYPE,
663 TI_ULFRACT_TYPE,
664 TI_ULLFRACT_TYPE,
665 TI_SAT_SACCUM_TYPE,
666 TI_SAT_ACCUM_TYPE,
667 TI_SAT_LACCUM_TYPE,
668 TI_SAT_LLACCUM_TYPE,
669 TI_SAT_USACCUM_TYPE,
670 TI_SAT_UACCUM_TYPE,
671 TI_SAT_ULACCUM_TYPE,
672 TI_SAT_ULLACCUM_TYPE,
673 TI_SACCUM_TYPE,
674 TI_ACCUM_TYPE,
675 TI_LACCUM_TYPE,
676 TI_LLACCUM_TYPE,
677 TI_USACCUM_TYPE,
678 TI_UACCUM_TYPE,
679 TI_ULACCUM_TYPE,
680 TI_ULLACCUM_TYPE,
681 TI_QQ_TYPE,
682 TI_HQ_TYPE,
683 TI_SQ_TYPE,
684 TI_DQ_TYPE,
685 TI_TQ_TYPE,
686 TI_UQQ_TYPE,
687 TI_UHQ_TYPE,
688 TI_USQ_TYPE,
689 TI_UDQ_TYPE,
690 TI_UTQ_TYPE,
691 TI_SAT_QQ_TYPE,
692 TI_SAT_HQ_TYPE,
693 TI_SAT_SQ_TYPE,
694 TI_SAT_DQ_TYPE,
695 TI_SAT_TQ_TYPE,
696 TI_SAT_UQQ_TYPE,
697 TI_SAT_UHQ_TYPE,
698 TI_SAT_USQ_TYPE,
699 TI_SAT_UDQ_TYPE,
700 TI_SAT_UTQ_TYPE,
701 TI_HA_TYPE,
702 TI_SA_TYPE,
703 TI_DA_TYPE,
704 TI_TA_TYPE,
705 TI_UHA_TYPE,
706 TI_USA_TYPE,
707 TI_UDA_TYPE,
708 TI_UTA_TYPE,
709 TI_SAT_HA_TYPE,
710 TI_SAT_SA_TYPE,
711 TI_SAT_DA_TYPE,
712 TI_SAT_TA_TYPE,
713 TI_SAT_UHA_TYPE,
714 TI_SAT_USA_TYPE,
715 TI_SAT_UDA_TYPE,
716 TI_SAT_UTA_TYPE,
717
718 TI_OPTIMIZATION_DEFAULT,
719 TI_OPTIMIZATION_CURRENT,
720 TI_TARGET_OPTION_DEFAULT,
721 TI_TARGET_OPTION_CURRENT,
722 TI_CURRENT_TARGET_PRAGMA,
723 TI_CURRENT_OPTIMIZE_PRAGMA,
724
725 TI_MAX
726 };
727
728 /* An enumeration of the standard C integer types. These must be
729 ordered so that shorter types appear before longer ones, and so
730 that signed types appear before unsigned ones, for the correct
731 functioning of interpret_integer() in c-lex.c. */
732 enum integer_type_kind {
733 itk_char,
734 itk_signed_char,
735 itk_unsigned_char,
736 itk_short,
737 itk_unsigned_short,
738 itk_int,
739 itk_unsigned_int,
740 itk_long,
741 itk_unsigned_long,
742 itk_long_long,
743 itk_unsigned_long_long,
744
745 itk_intN_0,
746 itk_unsigned_intN_0,
747 itk_intN_1,
748 itk_unsigned_intN_1,
749 itk_intN_2,
750 itk_unsigned_intN_2,
751 itk_intN_3,
752 itk_unsigned_intN_3,
753
754 itk_none
755 };
756
757 /* A pointer-to-function member type looks like:
758
759 struct {
760 __P __pfn;
761 ptrdiff_t __delta;
762 };
763
764 If __pfn is NULL, it is a NULL pointer-to-member-function.
765
766 (Because the vtable is always the first thing in the object, we
767 don't need its offset.) If the function is virtual, then PFN is
768 one plus twice the index into the vtable; otherwise, it is just a
769 pointer to the function.
770
771 Unfortunately, using the lowest bit of PFN doesn't work in
772 architectures that don't impose alignment requirements on function
773 addresses, or that use the lowest bit to tell one ISA from another,
774 for example. For such architectures, we use the lowest bit of
775 DELTA instead of the lowest bit of the PFN, and DELTA will be
776 multiplied by 2. */
777 enum ptrmemfunc_vbit_where_t {
778 ptrmemfunc_vbit_in_pfn,
779 ptrmemfunc_vbit_in_delta
780 };
781
782 /* Flags that may be passed in the third argument of decl_attributes, and
783 to handler functions for attributes. */
784 enum attribute_flags {
785 /* The type passed in is the type of a DECL, and any attributes that
786 should be passed in again to be applied to the DECL rather than the
787 type should be returned. */
788 ATTR_FLAG_DECL_NEXT = 1,
789 /* The type passed in is a function return type, and any attributes that
790 should be passed in again to be applied to the function type rather
791 than the return type should be returned. */
792 ATTR_FLAG_FUNCTION_NEXT = 2,
793 /* The type passed in is an array element type, and any attributes that
794 should be passed in again to be applied to the array type rather
795 than the element type should be returned. */
796 ATTR_FLAG_ARRAY_NEXT = 4,
797 /* The type passed in is a structure, union or enumeration type being
798 created, and should be modified in place. */
799 ATTR_FLAG_TYPE_IN_PLACE = 8,
800 /* The attributes are being applied by default to a library function whose
801 name indicates known behavior, and should be silently ignored if they
802 are not in fact compatible with the function type. */
803 ATTR_FLAG_BUILT_IN = 16,
804 /* A given attribute has been parsed as a C++-11 attribute. */
805 ATTR_FLAG_CXX11 = 32
806 };
807
808 /* Types used to represent sizes. */
809 enum size_type_kind {
810 stk_sizetype, /* Normal representation of sizes in bytes. */
811 stk_ssizetype, /* Signed representation of sizes in bytes. */
812 stk_bitsizetype, /* Normal representation of sizes in bits. */
813 stk_sbitsizetype, /* Signed representation of sizes in bits. */
814 stk_type_kind_last
815 };
816
817 enum operand_equal_flag {
818 OEP_ONLY_CONST = 1,
819 OEP_PURE_SAME = 2,
820 OEP_MATCH_SIDE_EFFECTS = 4,
821 OEP_ADDRESS_OF = 8,
822 /* Internal within operand_equal_p: */
823 OEP_NO_HASH_CHECK = 16,
824 /* Internal within inchash::add_expr: */
825 OEP_HASH_CHECK = 32,
826 /* Makes operand_equal_p handle more expressions: */
827 OEP_LEXICOGRAPHIC = 64
828 };
829
830 /* Enum and arrays used for tree allocation stats.
831 Keep in sync with tree.c:tree_node_kind_names. */
832 enum tree_node_kind {
833 d_kind,
834 t_kind,
835 b_kind,
836 s_kind,
837 r_kind,
838 e_kind,
839 c_kind,
840 id_kind,
841 vec_kind,
842 binfo_kind,
843 ssa_name_kind,
844 constr_kind,
845 x_kind,
846 lang_decl,
847 lang_type,
848 omp_clause_kind,
849 all_kinds
850 };
851
852 enum annot_expr_kind {
853 annot_expr_ivdep_kind,
854 annot_expr_no_vector_kind,
855 annot_expr_vector_kind,
856 annot_expr_kind_last
857 };
858
859 /*---------------------------------------------------------------------------
860 Type definitions
861 ---------------------------------------------------------------------------*/
862 /* When processing aliases at the symbol table level, we need the
863 declaration of target. For this reason we need to queue aliases and
864 process them after all declarations has been produced. */
865 struct GTY(()) alias_pair {
866 tree decl;
867 tree target;
868 };
869
870 /* An initialization priority. */
871 typedef unsigned short priority_type;
872
873 /* The type of a callback function for walking over tree structure. */
874 typedef tree (*walk_tree_fn) (tree *, int *, void *);
875
876 /* The type of a callback function that represents a custom walk_tree. */
877 typedef tree (*walk_tree_lh) (tree *, int *, tree (*) (tree *, int *, void *),
878 void *, hash_set<tree> *);
879
880
881 /*---------------------------------------------------------------------------
882 Main data structures
883 ---------------------------------------------------------------------------*/
884 /* A tree node can represent a data type, a variable, an expression
885 or a statement. Each node has a TREE_CODE which says what kind of
886 thing it represents. Some common codes are:
887 INTEGER_TYPE -- represents a type of integers.
888 ARRAY_TYPE -- represents a type of pointer.
889 VAR_DECL -- represents a declared variable.
890 INTEGER_CST -- represents a constant integer value.
891 PLUS_EXPR -- represents a sum (an expression).
892
893 As for the contents of a tree node: there are some fields
894 that all nodes share. Each TREE_CODE has various special-purpose
895 fields as well. The fields of a node are never accessed directly,
896 always through accessor macros. */
897
898 /* Every kind of tree node starts with this structure,
899 so all nodes have these fields.
900
901 See the accessor macros, defined below, for documentation of the
902 fields, and the table below which connects the fields and the
903 accessor macros. */
904
905 struct GTY(()) tree_base {
906 ENUM_BITFIELD(tree_code) code : 16;
907
908 unsigned side_effects_flag : 1;
909 unsigned constant_flag : 1;
910 unsigned addressable_flag : 1;
911 unsigned volatile_flag : 1;
912 unsigned readonly_flag : 1;
913 unsigned asm_written_flag: 1;
914 unsigned nowarning_flag : 1;
915 unsigned visited : 1;
916
917 unsigned used_flag : 1;
918 unsigned nothrow_flag : 1;
919 unsigned static_flag : 1;
920 unsigned public_flag : 1;
921 unsigned private_flag : 1;
922 unsigned protected_flag : 1;
923 unsigned deprecated_flag : 1;
924 unsigned default_def_flag : 1;
925
926 union {
927 /* The bits in the following structure should only be used with
928 accessor macros that constrain inputs with tree checking. */
929 struct {
930 unsigned lang_flag_0 : 1;
931 unsigned lang_flag_1 : 1;
932 unsigned lang_flag_2 : 1;
933 unsigned lang_flag_3 : 1;
934 unsigned lang_flag_4 : 1;
935 unsigned lang_flag_5 : 1;
936 unsigned lang_flag_6 : 1;
937 unsigned saturating_flag : 1;
938
939 unsigned unsigned_flag : 1;
940 unsigned packed_flag : 1;
941 unsigned user_align : 1;
942 unsigned nameless_flag : 1;
943 unsigned atomic_flag : 1;
944 unsigned spare0 : 3;
945
946 unsigned spare1 : 8;
947
948 /* This field is only used with TREE_TYPE nodes; the only reason it is
949 present in tree_base instead of tree_type is to save space. The size
950 of the field must be large enough to hold addr_space_t values. */
951 unsigned address_space : 8;
952 } bits;
953
954 /* The following fields are present in tree_base to save space. The
955 nodes using them do not require any of the flags above and so can
956 make better use of the 4-byte sized word. */
957
958 /* The number of HOST_WIDE_INTs in an INTEGER_CST. */
959 struct {
960 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
961 its native precision. */
962 unsigned char unextended;
963
964 /* The number of HOST_WIDE_INTs if the INTEGER_CST is extended to
965 wider precisions based on its TYPE_SIGN. */
966 unsigned char extended;
967
968 /* The number of HOST_WIDE_INTs if the INTEGER_CST is accessed in
969 offset_int precision, with smaller integers being extended
970 according to their TYPE_SIGN. This is equal to one of the two
971 fields above but is cached for speed. */
972 unsigned char offset;
973 } int_length;
974
975 /* VEC length. This field is only used with TREE_VEC. */
976 int length;
977
978 /* Number of elements. This field is only used with VECTOR_CST. */
979 unsigned int nelts;
980
981 /* SSA version number. This field is only used with SSA_NAME. */
982 unsigned int version;
983
984 /* CHREC_VARIABLE. This field is only used with POLYNOMIAL_CHREC. */
985 unsigned int chrec_var;
986
987 /* Internal function code. */
988 enum internal_fn ifn;
989
990 /* The following two fields are used for MEM_REF and TARGET_MEM_REF
991 expression trees and specify known data non-dependences. For
992 two memory references in a function they are known to not
993 alias if dependence_info.clique are equal and dependence_info.base
994 are distinct. */
995 struct {
996 unsigned short clique;
997 unsigned short base;
998 } dependence_info;
999 } GTY((skip(""))) u;
1000 };
1001
1002 /* The following table lists the uses of each of the above flags and
1003 for which types of nodes they are defined.
1004
1005 addressable_flag:
1006
1007 TREE_ADDRESSABLE in
1008 VAR_DECL, PARM_DECL, RESULT_DECL, FUNCTION_DECL, LABEL_DECL
1009 SSA_NAME
1010 all types
1011 CONSTRUCTOR, IDENTIFIER_NODE
1012 STMT_EXPR
1013
1014 CALL_EXPR_TAILCALL in
1015 CALL_EXPR
1016
1017 CASE_LOW_SEEN in
1018 CASE_LABEL_EXPR
1019
1020 PREDICT_EXPR_OUTCOME in
1021 PREDICT_EXPR
1022
1023 static_flag:
1024
1025 TREE_STATIC in
1026 VAR_DECL, FUNCTION_DECL
1027 CONSTRUCTOR
1028
1029 TREE_NO_TRAMPOLINE in
1030 ADDR_EXPR
1031
1032 BINFO_VIRTUAL_P in
1033 TREE_BINFO
1034
1035 TREE_SYMBOL_REFERENCED in
1036 IDENTIFIER_NODE
1037
1038 CLEANUP_EH_ONLY in
1039 TARGET_EXPR, WITH_CLEANUP_EXPR
1040
1041 TRY_CATCH_IS_CLEANUP in
1042 TRY_CATCH_EXPR
1043
1044 ASM_INPUT_P in
1045 ASM_EXPR
1046
1047 TYPE_REF_CAN_ALIAS_ALL in
1048 POINTER_TYPE, REFERENCE_TYPE
1049
1050 CASE_HIGH_SEEN in
1051 CASE_LABEL_EXPR
1052
1053 ENUM_IS_SCOPED in
1054 ENUMERAL_TYPE
1055
1056 TRANSACTION_EXPR_OUTER in
1057 TRANSACTION_EXPR
1058
1059 SSA_NAME_ANTI_RANGE_P in
1060 SSA_NAME
1061
1062 MUST_TAIL_CALL in
1063 CALL_EXPR
1064
1065 public_flag:
1066
1067 TREE_OVERFLOW in
1068 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
1069
1070 TREE_PUBLIC in
1071 VAR_DECL, FUNCTION_DECL
1072 IDENTIFIER_NODE
1073
1074 CONSTRUCTOR_NO_CLEARING in
1075 CONSTRUCTOR
1076
1077 ASM_VOLATILE_P in
1078 ASM_EXPR
1079
1080 CALL_EXPR_VA_ARG_PACK in
1081 CALL_EXPR
1082
1083 TYPE_CACHED_VALUES_P in
1084 all types
1085
1086 SAVE_EXPR_RESOLVED_P in
1087 SAVE_EXPR
1088
1089 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
1090 OMP_CLAUSE_LASTPRIVATE
1091
1092 OMP_CLAUSE_PRIVATE_DEBUG in
1093 OMP_CLAUSE_PRIVATE
1094
1095 OMP_CLAUSE_LINEAR_NO_COPYIN in
1096 OMP_CLAUSE_LINEAR
1097
1098 OMP_CLAUSE_MAP_ZERO_BIAS_ARRAY_SECTION in
1099 OMP_CLAUSE_MAP
1100
1101 OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
1102 OMP_CLAUSE_REDUCTION
1103
1104 TRANSACTION_EXPR_RELAXED in
1105 TRANSACTION_EXPR
1106
1107 FALLTHROUGH_LABEL_P in
1108 LABEL_DECL
1109
1110 SSA_NAME_IS_VIRTUAL_OPERAND in
1111 SSA_NAME
1112
1113 private_flag:
1114
1115 TREE_PRIVATE in
1116 all decls
1117
1118 CALL_EXPR_RETURN_SLOT_OPT in
1119 CALL_EXPR
1120
1121 OMP_SECTION_LAST in
1122 OMP_SECTION
1123
1124 OMP_PARALLEL_COMBINED in
1125 OMP_PARALLEL
1126
1127 OMP_ATOMIC_SEQ_CST in
1128 OMP_ATOMIC*
1129
1130 OMP_CLAUSE_PRIVATE_OUTER_REF in
1131 OMP_CLAUSE_PRIVATE
1132
1133 OMP_CLAUSE_LINEAR_NO_COPYOUT in
1134 OMP_CLAUSE_LINEAR
1135
1136 TYPE_REF_IS_RVALUE in
1137 REFERENCE_TYPE
1138
1139 ENUM_IS_OPAQUE in
1140 ENUMERAL_TYPE
1141
1142 protected_flag:
1143
1144 TREE_PROTECTED in
1145 BLOCK
1146 all decls
1147
1148 CALL_FROM_THUNK_P and
1149 CALL_ALLOCA_FOR_VAR_P in
1150 CALL_EXPR
1151
1152 OMP_CLAUSE_LINEAR_VARIABLE_STRIDE in
1153 OMP_CLAUSE_LINEAR
1154
1155 side_effects_flag:
1156
1157 TREE_SIDE_EFFECTS in
1158 all expressions
1159 all decls
1160 all constants
1161
1162 FORCED_LABEL in
1163 LABEL_DECL
1164
1165 volatile_flag:
1166
1167 TREE_THIS_VOLATILE in
1168 all expressions
1169 all decls
1170
1171 TYPE_VOLATILE in
1172 all types
1173
1174 readonly_flag:
1175
1176 TREE_READONLY in
1177 all expressions
1178 all decls
1179
1180 TYPE_READONLY in
1181 all types
1182
1183 constant_flag:
1184
1185 TREE_CONSTANT in
1186 all expressions
1187 all decls
1188 all constants
1189
1190 TYPE_SIZES_GIMPLIFIED in
1191 all types
1192
1193 unsigned_flag:
1194
1195 TYPE_UNSIGNED in
1196 all types
1197
1198 DECL_UNSIGNED in
1199 all decls
1200
1201 asm_written_flag:
1202
1203 TREE_ASM_WRITTEN in
1204 VAR_DECL, FUNCTION_DECL, TYPE_DECL
1205 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
1206 BLOCK, STRING_CST
1207
1208 SSA_NAME_OCCURS_IN_ABNORMAL_PHI in
1209 SSA_NAME
1210
1211 EXPR_CILK_SPAWN in
1212 CALL_EXPR
1213 AGGR_INIT_EXPR
1214
1215 used_flag:
1216
1217 TREE_USED in
1218 all expressions
1219 all decls
1220 IDENTIFIER_NODE
1221
1222 nothrow_flag:
1223
1224 TREE_NOTHROW in
1225 CALL_EXPR
1226 FUNCTION_DECL
1227
1228 TREE_THIS_NOTRAP in
1229 INDIRECT_REF, MEM_REF, TARGET_MEM_REF, ARRAY_REF, ARRAY_RANGE_REF
1230
1231 SSA_NAME_IN_FREE_LIST in
1232 SSA_NAME
1233
1234 DECL_NONALIASED in
1235 VAR_DECL
1236
1237 deprecated_flag:
1238
1239 TREE_DEPRECATED in
1240 all decls
1241 all types
1242
1243 IDENTIFIER_TRANSPARENT_ALIAS in
1244 IDENTIFIER_NODE
1245
1246 visited:
1247
1248 TREE_VISITED in
1249 all trees (used liberally by many passes)
1250
1251 saturating_flag:
1252
1253 TYPE_REVERSE_STORAGE_ORDER in
1254 RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, ARRAY_TYPE
1255
1256 TYPE_SATURATING in
1257 other types
1258
1259 VAR_DECL_IS_VIRTUAL_OPERAND in
1260 VAR_DECL
1261
1262 nowarning_flag:
1263
1264 TREE_NO_WARNING in
1265 all expressions
1266 all decls
1267
1268 TYPE_ARTIFICIAL in
1269 all types
1270
1271 default_def_flag:
1272
1273 TYPE_FINAL_P in
1274 RECORD_TYPE, UNION_TYPE and QUAL_UNION_TYPE
1275
1276 TYPE_VECTOR_OPAQUE in
1277 VECTOR_TYPE
1278
1279 SSA_NAME_IS_DEFAULT_DEF in
1280 SSA_NAME
1281
1282 DECL_NONLOCAL_FRAME in
1283 VAR_DECL
1284
1285 REF_REVERSE_STORAGE_ORDER in
1286 BIT_FIELD_REF, MEM_REF
1287
1288 FUNC_ADDR_BY_DESCRIPTOR in
1289 ADDR_EXPR
1290
1291 CALL_EXPR_BY_DESCRIPTOR in
1292 CALL_EXPR
1293 */
1294
1295 struct GTY(()) tree_typed {
1296 struct tree_base base;
1297 tree type;
1298 };
1299
1300 struct GTY(()) tree_common {
1301 struct tree_typed typed;
1302 tree chain;
1303 };
1304
1305 struct GTY(()) tree_int_cst {
1306 struct tree_typed typed;
1307 HOST_WIDE_INT val[1];
1308 };
1309
1310
1311 struct GTY(()) tree_real_cst {
1312 struct tree_typed typed;
1313 struct real_value * real_cst_ptr;
1314 };
1315
1316 struct GTY(()) tree_fixed_cst {
1317 struct tree_typed typed;
1318 struct fixed_value * fixed_cst_ptr;
1319 };
1320
1321 struct GTY(()) tree_string {
1322 struct tree_typed typed;
1323 int length;
1324 char str[1];
1325 };
1326
1327 struct GTY(()) tree_complex {
1328 struct tree_typed typed;
1329 tree real;
1330 tree imag;
1331 };
1332
1333 struct GTY(()) tree_vector {
1334 struct tree_typed typed;
1335 tree GTY ((length ("VECTOR_CST_NELTS ((tree) &%h)"))) elts[1];
1336 };
1337
1338 struct GTY(()) tree_identifier {
1339 struct tree_common common;
1340 struct ht_identifier id;
1341 };
1342
1343 struct GTY(()) tree_list {
1344 struct tree_common common;
1345 tree purpose;
1346 tree value;
1347 };
1348
1349 struct GTY(()) tree_vec {
1350 struct tree_common common;
1351 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1352 };
1353
1354 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1355 element. INDEX can optionally design the position of VALUE: in arrays,
1356 it is the index where VALUE has to be placed; in structures, it is the
1357 FIELD_DECL of the member. */
1358 struct GTY(()) constructor_elt {
1359 tree index;
1360 tree value;
1361 };
1362
1363 struct GTY(()) tree_constructor {
1364 struct tree_typed typed;
1365 vec<constructor_elt, va_gc> *elts;
1366 };
1367
1368 enum omp_clause_depend_kind
1369 {
1370 OMP_CLAUSE_DEPEND_IN,
1371 OMP_CLAUSE_DEPEND_OUT,
1372 OMP_CLAUSE_DEPEND_INOUT,
1373 OMP_CLAUSE_DEPEND_SOURCE,
1374 OMP_CLAUSE_DEPEND_SINK,
1375 OMP_CLAUSE_DEPEND_LAST
1376 };
1377
1378 enum omp_clause_proc_bind_kind
1379 {
1380 /* Numbers should match omp_proc_bind_t enum in omp.h. */
1381 OMP_CLAUSE_PROC_BIND_FALSE = 0,
1382 OMP_CLAUSE_PROC_BIND_TRUE = 1,
1383 OMP_CLAUSE_PROC_BIND_MASTER = 2,
1384 OMP_CLAUSE_PROC_BIND_CLOSE = 3,
1385 OMP_CLAUSE_PROC_BIND_SPREAD = 4,
1386 OMP_CLAUSE_PROC_BIND_LAST
1387 };
1388
1389 enum omp_clause_linear_kind
1390 {
1391 OMP_CLAUSE_LINEAR_DEFAULT,
1392 OMP_CLAUSE_LINEAR_REF,
1393 OMP_CLAUSE_LINEAR_VAL,
1394 OMP_CLAUSE_LINEAR_UVAL
1395 };
1396
1397 struct GTY(()) tree_exp {
1398 struct tree_typed typed;
1399 location_t locus;
1400 tree GTY ((special ("tree_exp"),
1401 desc ("TREE_CODE ((tree) &%0)")))
1402 operands[1];
1403 };
1404
1405 /* Immediate use linking structure. This structure is used for maintaining
1406 a doubly linked list of uses of an SSA_NAME. */
1407 struct GTY(()) ssa_use_operand_t {
1408 struct ssa_use_operand_t* GTY((skip(""))) prev;
1409 struct ssa_use_operand_t* GTY((skip(""))) next;
1410 /* Immediate uses for a given SSA name are maintained as a cyclic
1411 list. To recognize the root of this list, the location field
1412 needs to point to the original SSA name. Since statements and
1413 SSA names are of different data types, we need this union. See
1414 the explanation in struct imm_use_iterator. */
1415 union { gimple *stmt; tree ssa_name; } GTY((skip(""))) loc;
1416 tree *GTY((skip(""))) use;
1417 };
1418
1419 struct GTY(()) tree_ssa_name {
1420 struct tree_typed typed;
1421
1422 /* _DECL wrapped by this SSA name. */
1423 tree var;
1424
1425 /* Statement that defines this SSA name. */
1426 gimple *def_stmt;
1427
1428 /* Value range information. */
1429 union ssa_name_info_type {
1430 /* Pointer attributes used for alias analysis. */
1431 struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
1432 /* Value range attributes used for zero/sign extension elimination. */
1433 struct GTY ((tag ("1"))) range_info_def *range_info;
1434 } GTY ((desc ("%1.typed.type ?" \
1435 "!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
1436
1437 /* Immediate uses list for this SSA_NAME. */
1438 struct ssa_use_operand_t imm_uses;
1439 };
1440
1441 struct GTY(()) phi_arg_d {
1442 /* imm_use MUST be the first element in struct because we do some
1443 pointer arithmetic with it. See phi_arg_index_from_use. */
1444 struct ssa_use_operand_t imm_use;
1445 tree def;
1446 location_t locus;
1447 };
1448
1449 struct GTY(()) tree_omp_clause {
1450 struct tree_common common;
1451 location_t locus;
1452 enum omp_clause_code code;
1453 union omp_clause_subcode {
1454 enum omp_clause_default_kind default_kind;
1455 enum omp_clause_schedule_kind schedule_kind;
1456 enum omp_clause_depend_kind depend_kind;
1457 /* See include/gomp-constants.h for enum gomp_map_kind's values. */
1458 unsigned int map_kind;
1459 enum omp_clause_proc_bind_kind proc_bind_kind;
1460 enum tree_code reduction_code;
1461 enum omp_clause_linear_kind linear_kind;
1462 enum tree_code if_modifier;
1463 /* The dimension a OMP_CLAUSE__GRIDDIM_ clause of a gridified target
1464 construct describes. */
1465 unsigned int dimension;
1466 } GTY ((skip)) subcode;
1467
1468 /* The gimplification of OMP_CLAUSE_REDUCTION_{INIT,MERGE} for omp-low's
1469 usage. */
1470 gimple_seq gimple_reduction_init;
1471 gimple_seq gimple_reduction_merge;
1472
1473 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]")))
1474 ops[1];
1475 };
1476
1477 struct GTY(()) tree_block {
1478 struct tree_base base;
1479 tree chain;
1480
1481 unsigned abstract_flag : 1;
1482 unsigned block_num : 31;
1483
1484 location_t locus;
1485 location_t end_locus;
1486
1487 tree vars;
1488 vec<tree, va_gc> *nonlocalized_vars;
1489
1490 tree subblocks;
1491 tree supercontext;
1492 tree abstract_origin;
1493 tree fragment_origin;
1494 tree fragment_chain;
1495
1496 /* Pointer to the DWARF lexical block. */
1497 struct die_struct *die;
1498 };
1499
1500 struct GTY(()) tree_type_common {
1501 struct tree_common common;
1502 tree size;
1503 tree size_unit;
1504 tree attributes;
1505 unsigned int uid;
1506
1507 unsigned int precision : 10;
1508 unsigned no_force_blk_flag : 1;
1509 unsigned needs_constructing_flag : 1;
1510 unsigned transparent_aggr_flag : 1;
1511 unsigned restrict_flag : 1;
1512 unsigned contains_placeholder_bits : 2;
1513
1514 ENUM_BITFIELD(machine_mode) mode : 8;
1515
1516 unsigned string_flag : 1;
1517 unsigned lang_flag_0 : 1;
1518 unsigned lang_flag_1 : 1;
1519 unsigned lang_flag_2 : 1;
1520 unsigned lang_flag_3 : 1;
1521 unsigned lang_flag_4 : 1;
1522 unsigned lang_flag_5 : 1;
1523 unsigned lang_flag_6 : 1;
1524 unsigned lang_flag_7 : 1;
1525
1526 /* TYPE_ALIGN in log2; this has to be large enough to hold values
1527 of the maximum of BIGGEST_ALIGNMENT and MAX_OFILE_ALIGNMENT,
1528 the latter being usually the larger. For ELF it is 8<<28,
1529 so we need to store the value 32 (not 31, as we need the zero
1530 as well), hence six bits. */
1531 unsigned align : 6;
1532 unsigned warn_if_not_align : 6;
1533 unsigned typeless_storage : 1;
1534 unsigned spare : 18;
1535
1536 alias_set_type alias_set;
1537 tree pointer_to;
1538 tree reference_to;
1539 union tree_type_symtab {
1540 int GTY ((tag ("TYPE_SYMTAB_IS_ADDRESS"))) address;
1541 const char * GTY ((tag ("TYPE_SYMTAB_IS_POINTER"))) pointer;
1542 struct die_struct * GTY ((tag ("TYPE_SYMTAB_IS_DIE"))) die;
1543 } GTY ((desc ("debug_hooks->tree_type_symtab_field"))) symtab;
1544 tree canonical;
1545 tree next_variant;
1546 tree main_variant;
1547 tree context;
1548 tree name;
1549 };
1550
1551 struct GTY(()) tree_type_with_lang_specific {
1552 struct tree_type_common common;
1553 /* Points to a structure whose details depend on the language in use. */
1554 struct lang_type *lang_specific;
1555 };
1556
1557 struct GTY(()) tree_type_non_common {
1558 struct tree_type_with_lang_specific with_lang_specific;
1559 tree values;
1560 tree minval;
1561 tree maxval;
1562 tree lang_1;
1563 };
1564
1565 struct GTY (()) tree_binfo {
1566 struct tree_common common;
1567
1568 tree offset;
1569 tree vtable;
1570 tree virtuals;
1571 tree vptr_field;
1572 vec<tree, va_gc> *base_accesses;
1573 tree inheritance;
1574
1575 tree vtt_subvtt;
1576 tree vtt_vptr;
1577
1578 vec<tree, va_gc> base_binfos;
1579 };
1580
1581 struct GTY(()) tree_decl_minimal {
1582 struct tree_common common;
1583 location_t locus;
1584 unsigned int uid;
1585 tree name;
1586 tree context;
1587 };
1588
1589 struct GTY(()) tree_decl_common {
1590 struct tree_decl_minimal common;
1591 tree size;
1592
1593 ENUM_BITFIELD(machine_mode) mode : 8;
1594
1595 unsigned nonlocal_flag : 1;
1596 unsigned virtual_flag : 1;
1597 unsigned ignored_flag : 1;
1598 unsigned abstract_flag : 1;
1599 unsigned artificial_flag : 1;
1600 unsigned preserve_flag: 1;
1601 unsigned debug_expr_is_from : 1;
1602
1603 unsigned lang_flag_0 : 1;
1604 unsigned lang_flag_1 : 1;
1605 unsigned lang_flag_2 : 1;
1606 unsigned lang_flag_3 : 1;
1607 unsigned lang_flag_4 : 1;
1608 unsigned lang_flag_5 : 1;
1609 unsigned lang_flag_6 : 1;
1610 unsigned lang_flag_7 : 1;
1611 unsigned lang_flag_8 : 1;
1612
1613 /* In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
1614 unsigned decl_flag_0 : 1;
1615 /* In FIELD_DECL, this is DECL_BIT_FIELD
1616 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
1617 In TYPE_DECL, this is TYPE_DECL_SUPPRESS_DEBUG. */
1618 unsigned decl_flag_1 : 1;
1619 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
1620 In VAR_DECL, PARM_DECL and RESULT_DECL, this is
1621 DECL_HAS_VALUE_EXPR_P. */
1622 unsigned decl_flag_2 : 1;
1623 /* 1 bit unused. */
1624 unsigned decl_flag_3 : 1;
1625 /* Logically, these two would go in a theoretical base shared by var and
1626 parm decl. */
1627 unsigned gimple_reg_flag : 1;
1628 /* In VAR_DECL, PARM_DECL and RESULT_DECL, this is DECL_BY_REFERENCE. */
1629 unsigned decl_by_reference_flag : 1;
1630 /* In a VAR_DECL and PARM_DECL, this is DECL_READ_P. */
1631 unsigned decl_read_flag : 1;
1632 /* In a VAR_DECL or RESULT_DECL, this is DECL_NONSHAREABLE. */
1633 unsigned decl_nonshareable_flag : 1;
1634
1635 /* DECL_OFFSET_ALIGN, used only for FIELD_DECLs. */
1636 unsigned int off_align : 6;
1637
1638 /* DECL_ALIGN. It should have the same size as TYPE_ALIGN. */
1639 unsigned int align : 6;
1640
1641 /* DECL_WARN_IF_NOT_ALIGN. It should have the same size as
1642 TYPE_WARN_IF_NOT_ALIGN. */
1643 unsigned int warn_if_not_align : 6;
1644
1645 /* 14 bits unused. */
1646
1647 /* UID for points-to sets, stable over copying from inlining. */
1648 unsigned int pt_uid;
1649
1650 tree size_unit;
1651 tree initial;
1652 tree attributes;
1653 tree abstract_origin;
1654
1655 /* Points to a structure whose details depend on the language in use. */
1656 struct lang_decl *lang_specific;
1657 };
1658
1659 struct GTY(()) tree_decl_with_rtl {
1660 struct tree_decl_common common;
1661 rtx rtl;
1662 };
1663
1664 struct GTY(()) tree_field_decl {
1665 struct tree_decl_common common;
1666
1667 tree offset;
1668 tree bit_field_type;
1669 tree qualifier;
1670 tree bit_offset;
1671 tree fcontext;
1672 };
1673
1674 struct GTY(()) tree_label_decl {
1675 struct tree_decl_with_rtl common;
1676 int label_decl_uid;
1677 int eh_landing_pad_nr;
1678 };
1679
1680 struct GTY(()) tree_result_decl {
1681 struct tree_decl_with_rtl common;
1682 };
1683
1684 struct GTY(()) tree_const_decl {
1685 struct tree_decl_common common;
1686 };
1687
1688 struct GTY(()) tree_parm_decl {
1689 struct tree_decl_with_rtl common;
1690 rtx incoming_rtl;
1691 };
1692
1693 struct GTY(()) tree_decl_with_vis {
1694 struct tree_decl_with_rtl common;
1695 tree assembler_name;
1696 struct symtab_node *symtab_node;
1697
1698 /* Belong to VAR_DECL exclusively. */
1699 unsigned defer_output : 1;
1700 unsigned hard_register : 1;
1701 unsigned common_flag : 1;
1702 unsigned in_text_section : 1;
1703 unsigned in_constant_pool : 1;
1704 unsigned dllimport_flag : 1;
1705 /* Don't belong to VAR_DECL exclusively. */
1706 unsigned weak_flag : 1;
1707
1708 unsigned seen_in_bind_expr : 1;
1709 unsigned comdat_flag : 1;
1710 /* Used for FUNCTION_DECL, VAR_DECL and in C++ for TYPE_DECL. */
1711 ENUM_BITFIELD(symbol_visibility) visibility : 2;
1712 unsigned visibility_specified : 1;
1713
1714 /* Belong to FUNCTION_DECL exclusively. */
1715 unsigned init_priority_p : 1;
1716 /* Used by C++ only. Might become a generic decl flag. */
1717 unsigned shadowed_for_var_p : 1;
1718 /* Belong to FUNCTION_DECL exclusively. */
1719 unsigned cxx_constructor : 1;
1720 /* Belong to FUNCTION_DECL exclusively. */
1721 unsigned cxx_destructor : 1;
1722 /* Belong to FUNCTION_DECL exclusively. */
1723 unsigned final : 1;
1724 /* Belong to FUNCTION_DECL exclusively. */
1725 unsigned regdecl_flag : 1;
1726 /* 14 unused bits. */
1727 };
1728
1729 struct GTY(()) tree_var_decl {
1730 struct tree_decl_with_vis common;
1731 };
1732
1733 struct GTY(()) tree_decl_non_common {
1734 struct tree_decl_with_vis common;
1735 /* Almost all FE's use this. */
1736 tree result;
1737 };
1738
1739 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
1740 arguments/result/saved_tree fields by front ends. It was either inherit
1741 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
1742 which seemed a bit strange. */
1743
1744 struct GTY(()) tree_function_decl {
1745 struct tree_decl_non_common common;
1746
1747 struct function *f;
1748
1749 /* Arguments of the function. */
1750 tree arguments;
1751 /* The personality function. Used for stack unwinding. */
1752 tree personality;
1753
1754 /* Function specific options that are used by this function. */
1755 tree function_specific_target; /* target options */
1756 tree function_specific_optimization; /* optimization options */
1757
1758 /* Generic function body. */
1759 tree saved_tree;
1760 /* Index within a virtual table. */
1761 tree vindex;
1762
1763 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
1764 DECL_FUNCTION_CODE. Otherwise unused.
1765 ??? The bitfield needs to be able to hold all target function
1766 codes as well. */
1767 ENUM_BITFIELD(built_in_function) function_code : 12;
1768 ENUM_BITFIELD(built_in_class) built_in_class : 2;
1769
1770 unsigned static_ctor_flag : 1;
1771 unsigned static_dtor_flag : 1;
1772
1773 unsigned uninlinable : 1;
1774 unsigned possibly_inlined : 1;
1775 unsigned novops_flag : 1;
1776 unsigned returns_twice_flag : 1;
1777 unsigned malloc_flag : 1;
1778 unsigned operator_new_flag : 1;
1779 unsigned declared_inline_flag : 1;
1780 unsigned no_inline_warning_flag : 1;
1781
1782 unsigned no_instrument_function_entry_exit : 1;
1783 unsigned no_limit_stack : 1;
1784 unsigned disregard_inline_limits : 1;
1785 unsigned pure_flag : 1;
1786 unsigned looping_const_or_pure_flag : 1;
1787 unsigned has_debug_args_flag : 1;
1788 unsigned tm_clone_flag : 1;
1789 unsigned versioned_function : 1;
1790 /* No bits left. */
1791 };
1792
1793 struct GTY(()) tree_translation_unit_decl {
1794 struct tree_decl_common common;
1795 /* Source language of this translation unit. Used for DWARF output. */
1796 const char * GTY((skip(""))) language;
1797 /* TODO: Non-optimization used to build this translation unit. */
1798 /* TODO: Root of a partial DWARF tree for global types and decls. */
1799 };
1800
1801 struct GTY(()) tree_type_decl {
1802 struct tree_decl_non_common common;
1803
1804 };
1805
1806 struct GTY ((chain_next ("%h.next"), chain_prev ("%h.prev"))) tree_statement_list_node
1807 {
1808 struct tree_statement_list_node *prev;
1809 struct tree_statement_list_node *next;
1810 tree stmt;
1811 };
1812
1813 struct GTY(()) tree_statement_list
1814 {
1815 struct tree_typed typed;
1816 struct tree_statement_list_node *head;
1817 struct tree_statement_list_node *tail;
1818 };
1819
1820
1821 /* Optimization options used by a function. */
1822
1823 struct GTY(()) tree_optimization_option {
1824 struct tree_base base;
1825
1826 /* The optimization options used by the user. */
1827 struct cl_optimization *opts;
1828
1829 /* Target optabs for this set of optimization options. This is of
1830 type `struct target_optabs *'. */
1831 void *GTY ((atomic)) optabs;
1832
1833 /* The value of this_target_optabs against which the optabs above were
1834 generated. */
1835 struct target_optabs *GTY ((skip)) base_optabs;
1836 };
1837
1838 /* Forward declaration, defined in target-globals.h. */
1839
1840 struct GTY(()) target_globals;
1841
1842 /* Target options used by a function. */
1843
1844 struct GTY(()) tree_target_option {
1845 struct tree_base base;
1846
1847 /* Target globals for the corresponding target option. */
1848 struct target_globals *globals;
1849
1850 /* The optimization options used by the user. */
1851 struct cl_target_option *opts;
1852 };
1853
1854 /* Define the overall contents of a tree node.
1855 It may be any of the structures declared above
1856 for various types of node. */
1857 union GTY ((ptr_alias (union lang_tree_node),
1858 desc ("tree_node_structure (&%h)"), variable_size)) tree_node {
1859 struct tree_base GTY ((tag ("TS_BASE"))) base;
1860 struct tree_typed GTY ((tag ("TS_TYPED"))) typed;
1861 struct tree_common GTY ((tag ("TS_COMMON"))) common;
1862 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
1863 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
1864 struct tree_fixed_cst GTY ((tag ("TS_FIXED_CST"))) fixed_cst;
1865 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
1866 struct tree_string GTY ((tag ("TS_STRING"))) string;
1867 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
1868 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
1869 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
1870 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
1871 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
1872 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON")))
1873 decl_non_common;
1874 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
1875 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
1876 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
1877 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
1878 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
1879 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
1880 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
1881 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
1882 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
1883 struct tree_translation_unit_decl GTY ((tag ("TS_TRANSLATION_UNIT_DECL")))
1884 translation_unit_decl;
1885 struct tree_type_common GTY ((tag ("TS_TYPE_COMMON"))) type_common;
1886 struct tree_type_with_lang_specific GTY ((tag ("TS_TYPE_WITH_LANG_SPECIFIC")))
1887 type_with_lang_specific;
1888 struct tree_type_non_common GTY ((tag ("TS_TYPE_NON_COMMON")))
1889 type_non_common;
1890 struct tree_list GTY ((tag ("TS_LIST"))) list;
1891 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
1892 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
1893 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
1894 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
1895 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
1896 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
1897 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
1898 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
1899 struct tree_optimization_option GTY ((tag ("TS_OPTIMIZATION"))) optimization;
1900 struct tree_target_option GTY ((tag ("TS_TARGET_OPTION"))) target_option;
1901 };
1902
1903 /* Structure describing an attribute and a function to handle it. */
1904 struct attribute_spec {
1905 /* The name of the attribute (without any leading or trailing __),
1906 or NULL to mark the end of a table of attributes. */
1907 const char *name;
1908 /* The minimum length of the list of arguments of the attribute. */
1909 int min_length;
1910 /* The maximum length of the list of arguments of the attribute
1911 (-1 for no maximum). */
1912 int max_length;
1913 /* Whether this attribute requires a DECL. If it does, it will be passed
1914 from types of DECLs, function return types and array element types to
1915 the DECLs, function types and array types respectively; but when
1916 applied to a type in any other circumstances, it will be ignored with
1917 a warning. (If greater control is desired for a given attribute,
1918 this should be false, and the flags argument to the handler may be
1919 used to gain greater control in that case.) */
1920 bool decl_required;
1921 /* Whether this attribute requires a type. If it does, it will be passed
1922 from a DECL to the type of that DECL. */
1923 bool type_required;
1924 /* Whether this attribute requires a function (or method) type. If it does,
1925 it will be passed from a function pointer type to the target type,
1926 and from a function return type (which is not itself a function
1927 pointer type) to the function type. */
1928 bool function_type_required;
1929 /* Function to handle this attribute. NODE points to the node to which
1930 the attribute is to be applied. If a DECL, it should be modified in
1931 place; if a TYPE, a copy should be created. NAME is the name of the
1932 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
1933 of the arguments (which may be NULL). FLAGS gives further information
1934 about the context of the attribute. Afterwards, the attributes will
1935 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
1936 unless *NO_ADD_ATTRS is set to true (which should be done on error,
1937 as well as in any other cases when the attributes should not be added
1938 to the DECL or TYPE). Depending on FLAGS, any attributes to be
1939 applied to another type or DECL later may be returned;
1940 otherwise the return value should be NULL_TREE. This pointer may be
1941 NULL if no special handling is required beyond the checks implied
1942 by the rest of this structure. */
1943 tree (*handler) (tree *node, tree name, tree args,
1944 int flags, bool *no_add_attrs);
1945 /* Specifies if attribute affects type's identity. */
1946 bool affects_type_identity;
1947 };
1948
1949 /* These functions allow a front-end to perform a manual layout of a
1950 RECORD_TYPE. (For instance, if the placement of subsequent fields
1951 depends on the placement of fields so far.) Begin by calling
1952 start_record_layout. Then, call place_field for each of the
1953 fields. Then, call finish_record_layout. See layout_type for the
1954 default way in which these functions are used. */
1955 typedef struct record_layout_info_s {
1956 /* The RECORD_TYPE that we are laying out. */
1957 tree t;
1958 /* The offset into the record so far, in bytes, not including bits in
1959 BITPOS. */
1960 tree offset;
1961 /* The last known alignment of SIZE. */
1962 unsigned int offset_align;
1963 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
1964 tree bitpos;
1965 /* The alignment of the record so far, in bits. */
1966 unsigned int record_align;
1967 /* The alignment of the record so far, ignoring #pragma pack and
1968 __attribute__ ((packed)), in bits. */
1969 unsigned int unpacked_align;
1970 /* The previous field laid out. */
1971 tree prev_field;
1972 /* The static variables (i.e., class variables, as opposed to
1973 instance variables) encountered in T. */
1974 vec<tree, va_gc> *pending_statics;
1975 /* Bits remaining in the current alignment group */
1976 int remaining_in_alignment;
1977 /* True if we've seen a packed field that didn't have normal
1978 alignment anyway. */
1979 int packed_maybe_necessary;
1980 } *record_layout_info;
1981
1982 /* Iterator for going through the function arguments. */
1983 struct function_args_iterator {
1984 tree next; /* TREE_LIST pointing to the next argument */
1985 };
1986
1987 /* Structures to map from a tree to another tree. */
1988 struct GTY(()) tree_map_base {
1989 tree from;
1990 };
1991
1992 /* Map from a tree to another tree. */
1993
1994 struct GTY((for_user)) tree_map {
1995 struct tree_map_base base;
1996 unsigned int hash;
1997 tree to;
1998 };
1999
2000 /* Map from a decl tree to another tree. */
2001 struct GTY((for_user)) tree_decl_map {
2002 struct tree_map_base base;
2003 tree to;
2004 };
2005
2006 /* Map from a tree to an int. */
2007 struct GTY((for_user)) tree_int_map {
2008 struct tree_map_base base;
2009 unsigned int to;
2010 };
2011
2012 /* Map from a decl tree to a tree vector. */
2013 struct GTY((for_user)) tree_vec_map {
2014 struct tree_map_base base;
2015 vec<tree, va_gc> *to;
2016 };
2017
2018 /* Abstract iterators for CALL_EXPRs. These static inline definitions
2019 have to go towards the end of tree.h so that union tree_node is fully
2020 defined by this point. */
2021
2022 /* Structure containing iterator state. */
2023 struct call_expr_arg_iterator {
2024 tree t; /* the call_expr */
2025 int n; /* argument count */
2026 int i; /* next argument index */
2027 };
2028
2029 struct const_call_expr_arg_iterator {
2030 const_tree t; /* the call_expr */
2031 int n; /* argument count */
2032 int i; /* next argument index */
2033 };
2034
2035 /* The builtin_info structure holds the FUNCTION_DECL of the standard builtin
2036 function, and flags. */
2037 struct GTY(()) builtin_info_type {
2038 tree decl;
2039 /* Whether the user can use <xxx> instead of explicitly using calls
2040 to __builtin_<xxx>. */
2041 unsigned implicit_p : 1;
2042 /* Whether the user has provided a declaration of <xxx>. */
2043 unsigned declared_p : 1;
2044 };
2045
2046 /* Information about a _FloatN or _FloatNx type that may be
2047 supported. */
2048 struct floatn_type_info {
2049 /* The number N in the type name. */
2050 int n;
2051 /* Whether it is an extended type _FloatNx (true) or an interchange
2052 type (false). */
2053 bool extended;
2054 };
2055
2056
2057 /*---------------------------------------------------------------------------
2058 Global variables
2059 ---------------------------------------------------------------------------*/
2060 /* Matrix describing the structures contained in a given tree code. */
2061 extern bool tree_contains_struct[MAX_TREE_CODES][64];
2062
2063 /* Class of tree given its code. */
2064 extern const enum tree_code_class tree_code_type[];
2065
2066 /* Each tree code class has an associated string representation.
2067 These must correspond to the tree_code_class entries. */
2068 extern const char *const tree_code_class_strings[];
2069
2070 /* Number of argument-words in each kind of tree-node. */
2071 extern const unsigned char tree_code_length[];
2072
2073 /* Vector of all alias pairs for global symbols. */
2074 extern GTY(()) vec<alias_pair, va_gc> *alias_pairs;
2075
2076 /* Names of all the built_in classes. */
2077 extern const char *const built_in_class_names[BUILT_IN_LAST];
2078
2079 /* Names of all the built_in functions. */
2080 extern const char * built_in_names[(int) END_BUILTINS];
2081
2082 /* Number of operands and names for each OMP_CLAUSE node. */
2083 extern unsigned const char omp_clause_num_ops[];
2084 extern const char * const omp_clause_code_name[];
2085
2086 /* A vector of all translation-units. */
2087 extern GTY (()) vec<tree, va_gc> *all_translation_units;
2088
2089 /* Vector of standard trees used by the C compiler. */
2090 extern GTY(()) tree global_trees[TI_MAX];
2091
2092 /* The standard C integer types. Use integer_type_kind to index into
2093 this array. */
2094 extern GTY(()) tree integer_types[itk_none];
2095
2096 /* Types used to represent sizes. */
2097 extern GTY(()) tree sizetype_tab[(int) stk_type_kind_last];
2098
2099 /* Arrays for keeping track of tree node statistics. */
2100 extern int tree_node_counts[];
2101 extern int tree_node_sizes[];
2102
2103 /* True if we are in gimple form and the actions of the folders need to
2104 be restricted. False if we are not in gimple form and folding is not
2105 restricted to creating gimple expressions. */
2106 extern bool in_gimple_form;
2107
2108 /* Functional interface to the builtin functions. */
2109 extern GTY(()) builtin_info_type builtin_info[(int)END_BUILTINS];
2110
2111 /* If nonzero, an upper limit on alignment of structure fields, in bits, */
2112 extern unsigned int maximum_field_alignment;
2113
2114 /* Points to the FUNCTION_DECL of the function whose body we are reading. */
2115 extern GTY(()) tree current_function_decl;
2116
2117 /* Nonzero means a FUNC_BEGIN label was emitted. */
2118 extern GTY(()) const char * current_function_func_begin_label;
2119
2120 /* Information about the _FloatN and _FloatNx types. */
2121 extern const floatn_type_info floatn_nx_types[NUM_FLOATN_NX_TYPES];
2122
2123 #endif // GCC_TREE_CORE_H