1/* Front-end tree definitions for GNU compiler.
2 Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA. */
21
22#ifndef GCC_TREE_H
23#define GCC_TREE_H
24
25#include "hashtab.h"
26#include "machmode.h"
27#include "input.h"
28#include "statistics.h"
29#include "vec.h"
30
31/* Codes of tree nodes */
32
33#define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
34
35enum tree_code {
36#include "tree.def"
37
38 LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for
39 NUM_TREE_CODES. */
40};
41
42#undef DEFTREECODE
43
44extern unsigned char tree_contains_struct[256][64];
45#define CODE_CONTAINS_STRUCT(CODE, STRUCT) (tree_contains_struct[(CODE)][(STRUCT)])
46
47/* Number of language-independent tree codes. */
48#define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
49
50/* Tree code classes. */
51
52/* Each tree_code has an associated code class represented by a
53 TREE_CODE_CLASS. */
54
55enum tree_code_class {
56 tcc_exceptional, /* An exceptional code (fits no category). */
57 tcc_constant, /* A constant. */
58 /* Order of tcc_type and tcc_declaration is important. */
59 tcc_type, /* A type object code. */
60 tcc_declaration, /* A declaration (also serving as variable refs). */
61 tcc_reference, /* A reference to storage. */
62 tcc_comparison, /* A comparison expression. */
63 tcc_unary, /* A unary arithmetic expression. */
64 tcc_binary, /* A binary arithmetic expression. */
65 tcc_statement, /* A statement expression, which have side effects
66 but usually no interesting value. */
67 tcc_expression /* Any other expression. */
68};
69
70/* Each tree code class has an associated string representation.
71 These must correspond to the tree_code_class entries. */
72
73extern const char *const tree_code_class_strings[];
74
75/* Returns the string representing CLASS. */
76
77#define TREE_CODE_CLASS_STRING(CLASS)\
78 tree_code_class_strings[(int) (CLASS)]
79
80#define MAX_TREE_CODES 256
81extern const enum tree_code_class tree_code_type[];
82#define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
83
84/* Nonzero if CODE represents an exceptional code. */
85
86#define EXCEPTIONAL_CLASS_P(CODE)\
87 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
88
89/* Nonzero if CODE represents a constant. */
90
91#define CONSTANT_CLASS_P(CODE)\
92 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
93
94/* Nonzero if CODE represents a type. */
95
96#define TYPE_P(CODE)\
97 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
98
99/* Nonzero if CODE represents a declaration. */
100
101#define DECL_P(CODE)\
102 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
103
104/* Nonzero if CODE represents a memory tag. */
105
106#define MTAG_P(CODE) \
107 (TREE_CODE (CODE) == STRUCT_FIELD_TAG \
108 || TREE_CODE (CODE) == NAME_MEMORY_TAG \
109 || TREE_CODE (CODE) == SYMBOL_MEMORY_TAG)
110
111
112/* Nonzero if DECL represents a VAR_DECL or FUNCTION_DECL. */
113
114#define VAR_OR_FUNCTION_DECL_P(DECL)\
115 (TREE_CODE (DECL) == VAR_DECL || TREE_CODE (DECL) == FUNCTION_DECL)
116
117/* Nonzero if CODE represents a INDIRECT_REF. Keep these checks in
118 ascending code order. */
119
120#define INDIRECT_REF_P(CODE)\
121 (TREE_CODE (CODE) == INDIRECT_REF \
122 || TREE_CODE (CODE) == ALIGN_INDIRECT_REF \
123 || TREE_CODE (CODE) == MISALIGNED_INDIRECT_REF)
124
125/* Nonzero if CODE represents a reference. */
126
127#define REFERENCE_CLASS_P(CODE)\
128 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
129
130/* Nonzero if CODE represents a comparison. */
131
132#define COMPARISON_CLASS_P(CODE)\
133 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
134
135/* Nonzero if CODE represents a unary arithmetic expression. */
136
137#define UNARY_CLASS_P(CODE)\
138 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
139
140/* Nonzero if CODE represents a binary arithmetic expression. */
141
142#define BINARY_CLASS_P(CODE)\
143 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
144
145/* Nonzero if CODE represents a statement expression. */
146
147#define STATEMENT_CLASS_P(CODE)\
148 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
149
150/* Nonzero if CODE represents any other expression. */
151
152#define EXPRESSION_CLASS_P(CODE)\
153 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
154
155/* Returns nonzero iff CODE represents a type or declaration. */
156
157#define IS_TYPE_OR_DECL_P(CODE)\
158 (TYPE_P (CODE) || DECL_P (CODE))
159
160/* Returns nonzero iff CLASS is the tree-code class of an
161 expression. */
162
163#define IS_EXPR_CODE_CLASS(CLASS)\
164 ((CLASS) >= tcc_reference && (CLASS) <= tcc_expression)
165
166/* Returns nonzero iff NODE is an expression of some kind. */
167
168#define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
169
170/* Returns nonzero iff NODE is an OpenMP directive. */
171
172#define OMP_DIRECTIVE_P(NODE) \
173 (TREE_CODE (NODE) == OMP_PARALLEL \
174 || TREE_CODE (NODE) == OMP_FOR \
175 || TREE_CODE (NODE) == OMP_SECTIONS \
176 || TREE_CODE (NODE) == OMP_SINGLE \
177 || TREE_CODE (NODE) == OMP_SECTION \
178 || TREE_CODE (NODE) == OMP_MASTER \
179 || TREE_CODE (NODE) == OMP_ORDERED \
180 || TREE_CODE (NODE) == OMP_CRITICAL \
181 || TREE_CODE (NODE) == OMP_RETURN \
182 || TREE_CODE (NODE) == OMP_CONTINUE)
183
184/* Number of argument-words in each kind of tree-node. */
185
186extern const unsigned char tree_code_length[];
187#define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
188
189/* Names of tree components. */
190
191extern const char *const tree_code_name[];
192
193/* A vectors of trees. */
194DEF_VEC_P(tree);
195DEF_VEC_ALLOC_P(tree,gc);
196DEF_VEC_ALLOC_P(tree,heap);
197
198
199/* Classify which part of the compiler has defined a given builtin function.
200 Note that we assume below that this is no more than two bits. */
201enum built_in_class
202{
203 NOT_BUILT_IN = 0,
204 BUILT_IN_FRONTEND,
205 BUILT_IN_MD,
206 BUILT_IN_NORMAL
207};
208
209/* Names for the above. */
210extern const char *const built_in_class_names[4];
211
212/* Codes that identify the various built in functions
213 so that expand_call can identify them quickly. */
214
215#define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
216enum built_in_function
217{
218#include "builtins.def"
219
220 /* Complex division routines in libgcc. These are done via builtins
221 because emit_library_call_value can't handle complex values. */
222 BUILT_IN_COMPLEX_MUL_MIN,
223 BUILT_IN_COMPLEX_MUL_MAX
224 = BUILT_IN_COMPLEX_MUL_MIN
225 + MAX_MODE_COMPLEX_FLOAT
226 - MIN_MODE_COMPLEX_FLOAT,
227
228 BUILT_IN_COMPLEX_DIV_MIN,
229 BUILT_IN_COMPLEX_DIV_MAX
230 = BUILT_IN_COMPLEX_DIV_MIN
231 + MAX_MODE_COMPLEX_FLOAT
232 - MIN_MODE_COMPLEX_FLOAT,
233
234 /* Upper bound on non-language-specific builtins. */
235 END_BUILTINS
236};
237#undef DEF_BUILTIN
238
239/* Names for the above. */
240extern const char * built_in_names[(int) END_BUILTINS];
241
242/* Helper macros for math builtins. */
243
244#define BUILTIN_EXP10_P(FN) \
245 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
246 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
247
248#define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
249 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
250 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
251
252#define BUILTIN_SQRT_P(FN) \
253 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
254
255#define BUILTIN_CBRT_P(FN) \
256 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
257
258#define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
259
260#define CASE_FLT_FN(FN) case FN: case FN##F: case FN##L
261#define CASE_INT_FN(FN) case FN: case FN##L: case FN##LL
262
263/* An array of _DECL trees for the above. */
264extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
265extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
266
267/* In an OMP_CLAUSE node. */
268
269/* Number of operands and names for each clause. */
270extern unsigned const char omp_clause_num_ops[];
271extern const char * const omp_clause_code_name[];
272
273/* Clause codes. Do not reorder, as this is used to index into the tables
274 omp_clause_num_ops and omp_clause_code_name. */
275enum omp_clause_code
276{
277 /* Clause zero is special-cased inside the parser
278 (c_parser_omp_variable_list). */
279 OMP_CLAUSE_ERROR = 0,
280
281 /* OpenMP clause: private (variable_list). */
282 OMP_CLAUSE_PRIVATE,
283
284 /* OpenMP clause: shared (variable_list). */
285 OMP_CLAUSE_SHARED,
286
287 /* OpenMP clause: firstprivate (variable_list). */
288 OMP_CLAUSE_FIRSTPRIVATE,
289
290 /* OpenMP clause: lastprivate (variable_list). */
291 OMP_CLAUSE_LASTPRIVATE,
292
293 /* OpenMP clause: reduction (operator:variable_list).
294 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
295 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
296 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
297 into the shared one.
298 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
299 placeholder used in OMP_CLAUSE_REDUCTION_MERGE. */
300 OMP_CLAUSE_REDUCTION,
301
302 /* OpenMP clause: copyin (variable_list). */
303 OMP_CLAUSE_COPYIN,
304
305 /* OpenMP clause: copyprivate (variable_list). */
306 OMP_CLAUSE_COPYPRIVATE,
307
308 /* OpenMP clause: if (scalar-expression). */
309 OMP_CLAUSE_IF,
310
311 /* OpenMP clause: num_threads (integer-expression). */
312 OMP_CLAUSE_NUM_THREADS,
313
314 /* OpenMP clause: schedule. */
315 OMP_CLAUSE_SCHEDULE,
316
317 /* OpenMP clause: nowait. */
318 OMP_CLAUSE_NOWAIT,
319
320 /* OpenMP clause: ordered. */
321 OMP_CLAUSE_ORDERED,
322
323 /* OpenMP clause: default. */
324 OMP_CLAUSE_DEFAULT
325};
326
327/* The definition of tree nodes fills the next several pages. */
328
329/* A tree node can represent a data type, a variable, an expression
330 or a statement. Each node has a TREE_CODE which says what kind of
331 thing it represents. Some common codes are:
332 INTEGER_TYPE -- represents a type of integers.
333 ARRAY_TYPE -- represents a type of pointer.
334 VAR_DECL -- represents a declared variable.
335 INTEGER_CST -- represents a constant integer value.
336 PLUS_EXPR -- represents a sum (an expression).
337
338 As for the contents of a tree node: there are some fields
339 that all nodes share. Each TREE_CODE has various special-purpose
340 fields as well. The fields of a node are never accessed directly,
341 always through accessor macros. */
342
343/* Every kind of tree node starts with this structure,
344 so all nodes have these fields.
345
346 See the accessor macros, defined below, for documentation of the
347 fields. */
348union tree_ann_d;
349
350struct tree_common GTY(())
351{
352 tree chain;
353 tree type;
354 union tree_ann_d *ann;
355
356 ENUM_BITFIELD(tree_code) code : 8;
357
358 unsigned side_effects_flag : 1;
359 unsigned constant_flag : 1;
360 unsigned addressable_flag : 1;
361 unsigned volatile_flag : 1;
362 unsigned readonly_flag : 1;
363 unsigned unsigned_flag : 1;
364 unsigned asm_written_flag: 1;
365 unsigned nowarning_flag : 1;
366
367 unsigned used_flag : 1;
368 unsigned nothrow_flag : 1;
369 unsigned static_flag : 1;
370 unsigned public_flag : 1;
371 unsigned private_flag : 1;
372 unsigned protected_flag : 1;
373 unsigned deprecated_flag : 1;
374 unsigned invariant_flag : 1;
375
376 unsigned lang_flag_0 : 1;
377 unsigned lang_flag_1 : 1;
378 unsigned lang_flag_2 : 1;
379 unsigned lang_flag_3 : 1;
380 unsigned lang_flag_4 : 1;
381 unsigned lang_flag_5 : 1;
382 unsigned lang_flag_6 : 1;
383 unsigned visited : 1;
384};
385
386/* The following table lists the uses of each of the above flags and
387 for which types of nodes they are defined. Note that expressions
388 include decls.
389
390 addressable_flag:
391
392 TREE_ADDRESSABLE in
393 VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL,
394 ..._TYPE, IDENTIFIER_NODE.
395 In a STMT_EXPR, it means we want the result of the enclosed
396 expression.
397 CALL_EXPR_TAILCALL in CALL_EXPR
398 CASE_LOW_SEEN in CASE_LABEL_EXPR
399
400 static_flag:
401
402 TREE_STATIC in
403 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR
404 BINFO_VIRTUAL_P in
405 TREE_BINFO
406 TREE_CONSTANT_OVERFLOW in
407 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
408 TREE_SYMBOL_REFERENCED in
409 IDENTIFIER_NODE
410 CLEANUP_EH_ONLY in
411 TARGET_EXPR, WITH_CLEANUP_EXPR
412 ASM_INPUT_P in
413 ASM_EXPR
414 EH_FILTER_MUST_NOT_THROW in EH_FILTER_EXPR
415 TYPE_REF_CAN_ALIAS_ALL in
416 POINTER_TYPE, REFERENCE_TYPE
417 CASE_HIGH_SEEN in CASE_LABEL_EXPR
418
419 public_flag:
420
421 TREE_OVERFLOW in
422 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
423 TREE_PUBLIC in
424 VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
425 ASM_VOLATILE_P in
426 ASM_EXPR
427 TYPE_CACHED_VALUES_P in
428 ..._TYPE
429 SAVE_EXPR_RESOLVED_P in
430 SAVE_EXPR
431 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
432 OMP_CLAUSE_LASTPRIVATE
433 OMP_CLAUSE_PRIVATE_DEBUG in
434 OMP_CLAUSE_PRIVATE
435
436 private_flag:
437
438 TREE_PRIVATE in
439 ..._DECL
440 CALL_EXPR_RETURN_SLOT_OPT in
441 CALL_EXPR
442 DECL_BY_REFERENCE in
443 PARM_DECL, RESULT_DECL
444 OMP_RETURN_NOWAIT in
445 OMP_RETURN
446 OMP_SECTION_LAST in
447 OMP_SECTION
448 OMP_PARALLEL_COMBINED in
449 OMP_PARALLEL
450
451 protected_flag:
452
453 TREE_PROTECTED in
454 BLOCK
455 ..._DECL
456 CALL_FROM_THUNK_P in
457 CALL_EXPR
458
459 side_effects_flag:
460
461 TREE_SIDE_EFFECTS in
462 all expressions
463 all decls
464 all constants
465
466 FORCED_LABEL in
467 LABEL_DECL
468
469 volatile_flag:
470
471 TREE_THIS_VOLATILE in
472 all expressions
473 TYPE_VOLATILE in
474 ..._TYPE
475
476 readonly_flag:
477
478 TREE_READONLY in
479 all expressions
480 TYPE_READONLY in
481 ..._TYPE
482
483 constant_flag:
484
485 TREE_CONSTANT in
486 all expressions
487 all decls
488 all constants
489 TYPE_SIZES_GIMPLIFIED
490 ..._TYPE
491
492 unsigned_flag:
493
494 TYPE_UNSIGNED in
495 all types
496 DECL_UNSIGNED in
497 all decls
498 BIT_FIELD_REF_UNSIGNED in
499 BIT_FIELD_REF
500
501 asm_written_flag:
502
503 TREE_ASM_WRITTEN in
504 VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
505 BLOCK, SSA_NAME
506
507 used_flag:
508
509 TREE_USED in
510 expressions, IDENTIFIER_NODE
511
512 nothrow_flag:
513
514 TREE_NOTHROW in
515 CALL_EXPR, FUNCTION_DECL
516
517 TYPE_ALIGN_OK in
518 ..._TYPE
519
520 TREE_THIS_NOTRAP in
521 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
522
523 deprecated_flag:
524
525 TREE_DEPRECATED in
526 ..._DECL
527
528 IDENTIFIER_TRANSPARENT_ALIAS in
529 IDENTIFIER_NODE
530
531 visited:
532
533 Used in tree traversals to mark visited nodes.
534
535 invariant_flag:
536
537 TREE_INVARIANT in
538 all expressions.
539
540 nowarning_flag:
541
542 TREE_NO_WARNING in
543 ... any expr or decl node
544*/
545#undef DEFTREESTRUCT
546#define DEFTREESTRUCT(ENUM, NAME) ENUM,
547enum tree_node_structure_enum {
548#include "treestruct.def"
549 LAST_TS_ENUM
550};
551#undef DEFTREESTRUCT
552
553/* Define accessors for the fields that all tree nodes have
554 (though some fields are not used for all kinds of nodes). */
555
556/* The tree-code says what kind of node it is.
557 Codes are defined in tree.def. */
558#define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code)
559#define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (VALUE))
560
561/* When checking is enabled, errors will be generated if a tree node
562 is accessed incorrectly. The macros die with a fatal error. */
563#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
564
565#define TREE_CHECK(T, CODE) __extension__ \
566({ const tree __t = (T); \
567 if (TREE_CODE (__t) != (CODE)) \
568 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
569 (CODE), 0); \
570 __t; })
571
572#define TREE_NOT_CHECK(T, CODE) __extension__ \
573({ const tree __t = (T); \
574 if (TREE_CODE (__t) == (CODE)) \
575 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
576 (CODE), 0); \
577 __t; })
578
579#define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
580({ const tree __t = (T); \
581 if (TREE_CODE (__t) != (CODE1) \
582 && TREE_CODE (__t) != (CODE2)) \
583 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
584 (CODE1), (CODE2), 0); \
585 __t; })
586
587#define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
588({ const tree __t = (T); \
589 if (TREE_CODE (__t) == (CODE1) \
590 || TREE_CODE (__t) == (CODE2)) \
591 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
592 (CODE1), (CODE2), 0); \
593 __t; })
594
595#define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
596({ const tree __t = (T); \
597 if (TREE_CODE (__t) != (CODE1) \
598 && TREE_CODE (__t) != (CODE2) \
599 && TREE_CODE (__t) != (CODE3)) \
600 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
601 (CODE1), (CODE2), (CODE3), 0); \
602 __t; })
603
604#define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
605({ const tree __t = (T); \
606 if (TREE_CODE (__t) == (CODE1) \
607 || TREE_CODE (__t) == (CODE2) \
608 || TREE_CODE (__t) == (CODE3)) \
609 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
610 (CODE1), (CODE2), (CODE3), 0); \
611 __t; })
612
613#define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
614({ const tree __t = (T); \
615 if (TREE_CODE (__t) != (CODE1) \
616 && TREE_CODE (__t) != (CODE2) \
617 && TREE_CODE (__t) != (CODE3) \
618 && TREE_CODE (__t) != (CODE4)) \
619 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
620 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
621 __t; })
622
623#define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
624({ const tree __t = (T); \
625 if (TREE_CODE (__t) == (CODE1) \
626 || TREE_CODE (__t) == (CODE2) \
627 || TREE_CODE (__t) == (CODE3) \
628 || TREE_CODE (__t) == (CODE4)) \
629 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
630 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
631 __t; })
632
633#define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
634({ const tree __t = (T); \
635 if (TREE_CODE (__t) != (CODE1) \
636 && TREE_CODE (__t) != (CODE2) \
637 && TREE_CODE (__t) != (CODE3) \
638 && TREE_CODE (__t) != (CODE4) \
639 && TREE_CODE (__t) != (CODE5)) \
640 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
641 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
642 __t; })
643
644#define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
645({ const tree __t = (T); \
646 if (TREE_CODE (__t) == (CODE1) \
647 || TREE_CODE (__t) == (CODE2) \
648 || TREE_CODE (__t) == (CODE3) \
649 || TREE_CODE (__t) == (CODE4) \
650 || TREE_CODE (__t) == (CODE5)) \
651 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
652 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
653 __t; })
654
655#define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
656({ const tree __t = (T); \
657 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
658 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
659 __FUNCTION__); \
660 __t; })
661
662#define TREE_CLASS_CHECK(T, CLASS) __extension__ \
663({ const tree __t = (T); \
664 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
665 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
666 __FUNCTION__); \
667 __t; })
668
669#define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
670({ const tree __t = (T); \
671 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
672 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
673 (CODE1), (CODE2)); \
674 __t; })
675
676#define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
677({ const tree __t = (T); \
678 if (TREE_CODE (__t) != OMP_CLAUSE) \
679 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
680 OMP_CLAUSE, 0); \
681 if (__t->omp_clause.code != (CODE)) \
682 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
683 (CODE)); \
684 __t; })
685
686#define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
687({ const tree __t = (T); \
688 if (TREE_CODE (__t) != OMP_CLAUSE) \
689 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
690 OMP_CLAUSE, 0); \
691 if ((int) __t->omp_clause.code < (int) (CODE1) \
692 || (int) __t->omp_clause.code > (int) (CODE2)) \
693 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
694 __FUNCTION__, (CODE1), (CODE2)); \
695 __t; })
696
697/* These checks have to be special cased. */
698#define EXPR_CHECK(T) __extension__ \
699({ const tree __t = (T); \
700 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
701 if (!IS_EXPR_CODE_CLASS (__c)) \
702 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
703 __FUNCTION__); \
704 __t; })
705
706/* These checks have to be special cased. */
707#define NON_TYPE_CHECK(T) __extension__ \
708({ const tree __t = (T); \
709 if (TYPE_P (__t)) \
710 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
711 __FUNCTION__); \
712 __t; })
713
714#define TREE_VEC_ELT_CHECK(T, I) __extension__ \
715(*({const tree __t = (T); \
716 const int __i = (I); \
717 if (TREE_CODE (__t) != TREE_VEC) \
718 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
719 TREE_VEC, 0); \
720 if (__i < 0 || __i >= __t->vec.length) \
721 tree_vec_elt_check_failed (__i, __t->vec.length, \
722 __FILE__, __LINE__, __FUNCTION__); \
723 &__t->vec.a[__i]; }))
724
725#define PHI_NODE_ELT_CHECK(t, i) __extension__ \
726(*({const tree __t = t; \
727 const int __i = (i); \
728 if (TREE_CODE (__t) != PHI_NODE) \
729 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
730 PHI_NODE, 0); \
731 if (__i < 0 || __i >= __t->phi.capacity) \
732 phi_node_elt_check_failed (__i, __t->phi.num_args, \
733 __FILE__, __LINE__, __FUNCTION__); \
734 &__t->phi.a[__i]; }))
735
736#define OMP_CLAUSE_ELT_CHECK(t, i) __extension__ \
737(*({const tree __t = t; \
738 const int __i = (i); \
739 if (TREE_CODE (__t) != OMP_CLAUSE) \
740 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
741 OMP_CLAUSE, 0); \
742 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
743 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
744 __FUNCTION__); \
745 &__t->omp_clause.ops[__i]; }))
746
747/* Special checks for TREE_OPERANDs. */
748#define TREE_OPERAND_CHECK(T, I) __extension__ \
749(*({const tree __t = EXPR_CHECK (T); \
750 const int __i = (I); \
751 if (__i < 0 || __i >= TREE_CODE_LENGTH (TREE_CODE (__t))) \
752 tree_operand_check_failed (__i, TREE_CODE (__t), \
753 __FILE__, __LINE__, __FUNCTION__); \
754 &__t->exp.operands[__i]; }))
755
756#define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
757(*({const tree __t = (T); \
758 const int __i = (I); \
759 if (TREE_CODE (__t) != CODE) \
760 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
761 if (__i < 0 || __i >= TREE_CODE_LENGTH (CODE)) \
762 tree_operand_check_failed (__i, (CODE), \
763 __FILE__, __LINE__, __FUNCTION__); \
764 &__t->exp.operands[__i]; }))
765
766#define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
767(*(rtx *) \
768 ({const tree __t = (T); \
769 const int __i = (I); \
770 if (TREE_CODE (__t) != (CODE)) \
771 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
772 if (__i < 0 || __i >= TREE_CODE_LENGTH ((CODE))) \
773 tree_operand_check_failed (__i, (CODE), \
774 __FILE__, __LINE__, __FUNCTION__); \
775 &__t->exp.operands[__i]; }))
776
777extern void tree_contains_struct_check_failed (const tree,
778 const enum tree_node_structure_enum,
779 const char *, int, const char *)
780 ATTRIBUTE_NORETURN;
781
782extern void tree_check_failed (const tree, const char *, int, const char *,
783 ...) ATTRIBUTE_NORETURN;
784extern void tree_not_check_failed (const tree, const char *, int, const char *,
785 ...) ATTRIBUTE_NORETURN;
786extern void tree_class_check_failed (const tree, const enum tree_code_class,
787 const char *, int, const char *)
788 ATTRIBUTE_NORETURN;
789extern void tree_range_check_failed (const tree, const char *, int,
790 const char *, enum tree_code,
791 enum tree_code);
792extern void tree_not_class_check_failed (const tree,
793 const enum tree_code_class,
794 const char *, int, const char *)
795 ATTRIBUTE_NORETURN;
796extern void tree_vec_elt_check_failed (int, int, const char *,
797 int, const char *)
798 ATTRIBUTE_NORETURN;
799extern void phi_node_elt_check_failed (int, int, const char *,
800 int, const char *)
801 ATTRIBUTE_NORETURN;
802extern void tree_operand_check_failed (int, enum tree_code,
803 const char *, int, const char *)
804 ATTRIBUTE_NORETURN;
805extern void omp_clause_check_failed (const tree, const char *, int,
806 const char *, enum omp_clause_code)
807 ATTRIBUTE_NORETURN;
808extern void omp_clause_operand_check_failed (int, tree, const char *,
809 int, const char *)
810 ATTRIBUTE_NORETURN;
811extern void omp_clause_range_check_failed (const tree, const char *, int,
812 const char *, enum omp_clause_code,
813 enum omp_clause_code)
814 ATTRIBUTE_NORETURN;
815
816#else /* not ENABLE_TREE_CHECKING, or not gcc */
817
818#define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
819#define TREE_CHECK(T, CODE) (T)
820#define TREE_NOT_CHECK(T, CODE) (T)
821#define TREE_CHECK2(T, CODE1, CODE2) (T)
822#define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
823#define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
824#define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
825#define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
826#define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
827#define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
828#define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
829#define TREE_CLASS_CHECK(T, CODE) (T)
830#define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
831#define EXPR_CHECK(T) (T)
832#define NON_TYPE_CHECK(T) (T)
833#define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
834#define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
835#define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
836#define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
837#define PHI_NODE_ELT_CHECK(T, i) ((T)->phi.a[i])
838#define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
839#define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
840#define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
841
842#endif
843
844#define TREE_BLOCK(NODE) (EXPR_CHECK (NODE)->exp.block)
845
846#include "tree-check.h"
847
848#define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
849#define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
850#define TREE_MEMORY_TAG_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_MEMORY_TAG)
851#define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
852#define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
853#define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
854#define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
855#define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
856#define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
857#define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
858#define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
859
860#define RECORD_OR_UNION_CHECK(T) \
861 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
862#define NOT_RECORD_OR_UNION_CHECK(T) \
863 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
864
865#define NUMERICAL_TYPE_CHECK(T) \
866 TREE_CHECK4 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE)
867
868/* In all nodes that are expressions, this is the data type of the expression.
869 In POINTER_TYPE nodes, this is the type that the pointer points to.
870 In ARRAY_TYPE nodes, this is the type of the elements.
871 In VECTOR_TYPE nodes, this is the type of the elements. */
872#define TREE_TYPE(NODE) ((NODE)->common.type)
873
874/* Here is how primitive or already-canonicalized types' hash codes
875 are made. */
876#define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
877
878/* A simple hash function for an arbitrary tree node. This must not be
879 used in hash tables which are saved to a PCH. */
880#define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
881
882/* Nodes are chained together for many purposes.
883 Types are chained together to record them for being output to the debugger
884 (see the function `chain_type').
885 Decls in the same scope are chained together to record the contents
886 of the scope.
887 Statement nodes for successive statements used to be chained together.
888 Often lists of things are represented by TREE_LIST nodes that
889 are chained together. */
890
891#define TREE_CHAIN(NODE) ((NODE)->common.chain)
892
893/* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
894 that don't change the machine mode. */
895
896#define STRIP_NOPS(EXP) \
897 while ((TREE_CODE (EXP) == NOP_EXPR \
898 || TREE_CODE (EXP) == CONVERT_EXPR \
899 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
900 && TREE_OPERAND (EXP, 0) != error_mark_node \
901 && (TYPE_MODE (TREE_TYPE (EXP)) \
902 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
903 (EXP) = TREE_OPERAND (EXP, 0)
904
905/* Like STRIP_NOPS, but don't let the signedness change either. */
906
907#define STRIP_SIGN_NOPS(EXP) \
908 while ((TREE_CODE (EXP) == NOP_EXPR \
909 || TREE_CODE (EXP) == CONVERT_EXPR \
910 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
911 && TREE_OPERAND (EXP, 0) != error_mark_node \
912 && (TYPE_MODE (TREE_TYPE (EXP)) \
913 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
914 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
915 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
916 (EXP) = TREE_OPERAND (EXP, 0)
917
918/* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
919
920#define STRIP_TYPE_NOPS(EXP) \
921 while ((TREE_CODE (EXP) == NOP_EXPR \
922 || TREE_CODE (EXP) == CONVERT_EXPR \
923 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
924 && TREE_OPERAND (EXP, 0) != error_mark_node \
925 && (TREE_TYPE (EXP) \
926 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
927 (EXP) = TREE_OPERAND (EXP, 0)
928
929/* Remove unnecessary type conversions according to
930 tree_ssa_useless_type_conversion. */
931
932#define STRIP_USELESS_TYPE_CONVERSION(EXP) \
933 while (tree_ssa_useless_type_conversion (EXP)) \
934 EXP = TREE_OPERAND (EXP, 0)
935
936/* Nonzero if TYPE represents an integral type. Note that we do not
937 include COMPLEX types here. Keep these checks in ascending code
938 order. */
939
940#define INTEGRAL_TYPE_P(TYPE) \
941 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
942 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
943 || TREE_CODE (TYPE) == INTEGER_TYPE)
944
945/* Nonzero if TYPE represents a scalar floating-point type. */
946
947#define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
948
949/* Nonzero if TYPE represents a complex floating-point type. */
950
951#define COMPLEX_FLOAT_TYPE_P(TYPE) \
952 (TREE_CODE (TYPE) == COMPLEX_TYPE \
953 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
954
955/* Nonzero if TYPE represents a vector floating-point type. */
956
957#define VECTOR_FLOAT_TYPE_P(TYPE) \
958 (TREE_CODE (TYPE) == VECTOR_TYPE \
959 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
960
961/* Nonzero if TYPE represents a floating-point type, including complex
962 and vector floating-point types. The vector and complex check does
963 not use the previous two macros to enable early folding. */
964
965#define FLOAT_TYPE_P(TYPE) \
966 (SCALAR_FLOAT_TYPE_P (TYPE) \
967 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
968 || TREE_CODE (TYPE) == VECTOR_TYPE) \
969 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
970
971/* Nonzero if TYPE represents a decimal floating-point type. */
972#define DECIMAL_FLOAT_TYPE_P(TYPE) \
973 (SCALAR_FLOAT_TYPE_P (TYPE) \
974 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
975
976/* Nonzero if TYPE represents an aggregate (multi-component) type.
977 Keep these checks in ascending code order. */
978
979#define AGGREGATE_TYPE_P(TYPE) \
980 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
981 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
982
983/* Nonzero if TYPE represents a pointer or reference type.
984 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
985 ascending code order. */
986
987#define POINTER_TYPE_P(TYPE) \
988 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
989
990/* Nonzero if this type is a complete type. */
991#define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
992
993/* Nonzero if this type is the (possibly qualified) void type. */
994#define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
995
996/* Nonzero if this type is complete or is cv void. */
997#define COMPLETE_OR_VOID_TYPE_P(NODE) \
998 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
999
1000/* Nonzero if this type is complete or is an array with unspecified bound. */
1001#define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1002 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1003
1004
1005/* Define many boolean fields that all tree nodes have. */
1006
1007/* In VAR_DECL nodes, nonzero means address of this is needed.
1008 So it cannot be in a register.
1009 In a FUNCTION_DECL, nonzero means its address is needed.
1010 So it must be compiled even if it is an inline function.
1011 In a FIELD_DECL node, it means that the programmer is permitted to
1012 construct the address of this field. This is used for aliasing
1013 purposes: see record_component_aliases.
1014 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1015 In LABEL_DECL nodes, it means a goto for this label has been seen
1016 from a place outside all binding contours that restore stack levels.
1017 In ..._TYPE nodes, it means that objects of this type must
1018 be fully addressable. This means that pieces of this
1019 object cannot go into register parameters, for example.
1020 In IDENTIFIER_NODEs, this means that some extern decl for this name
1021 had its address taken. That matters for inline functions. */
1022#define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag)
1023
1024/* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1025 exit of a function. Calls for which this is true are candidates for tail
1026 call optimizations. */
1027#define CALL_EXPR_TAILCALL(NODE) (CALL_EXPR_CHECK(NODE)->common.addressable_flag)
1028
1029/* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1030 CASE_LOW operand has been processed. */
1031#define CASE_LOW_SEEN(NODE) \
1032 (CASE_LABEL_EXPR_CHECK (NODE)->common.addressable_flag)
1033
1034/* In a VAR_DECL, nonzero means allocate static storage.
1035 In a FUNCTION_DECL, nonzero if function has been defined.
1036 In a CONSTRUCTOR, nonzero means allocate static storage.
1037
1038 ??? This is also used in lots of other nodes in unclear ways which
1039 should be cleaned up some day. */
1040#define TREE_STATIC(NODE) ((NODE)->common.static_flag)
1041
1042/* In a TARGET_EXPR, WITH_CLEANUP_EXPR, means that the pertinent cleanup
1043 should only be executed if an exception is thrown, not on normal exit
1044 of its scope. */
1045#define CLEANUP_EH_ONLY(NODE) ((NODE)->common.static_flag)
1046
1047/* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1048 CASE_HIGH operand has been processed. */
1049#define CASE_HIGH_SEEN(NODE) \
1050 (CASE_LABEL_EXPR_CHECK (NODE)->common.static_flag)
1051
1052/* In an expr node (usually a conversion) this means the node was made
1053 implicitly and should not lead to any sort of warning. In a decl node,
1054 warnings concerning the decl should be suppressed. This is used at
1055 least for used-before-set warnings, and it set after one warning is
1056 emitted. */
1057#define TREE_NO_WARNING(NODE) ((NODE)->common.nowarning_flag)
1058
1059/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST this means
1060 there was an overflow in folding. This is distinct from
1061 TREE_OVERFLOW because ANSI C requires a diagnostic when overflows
1062 occur in constant expressions. */
1063#define TREE_CONSTANT_OVERFLOW(NODE) (CST_CHECK (NODE)->common.static_flag)
1064
1065/* In an IDENTIFIER_NODE, this means that assemble_name was called with
1066 this string as an argument. */
1067#define TREE_SYMBOL_REFERENCED(NODE) \
1068 (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
1069
1070/* Nonzero in a pointer or reference type means the data pointed to
1071 by this type can alias anything. */
1072#define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1073 (PTR_OR_REF_CHECK (NODE)->common.static_flag)
1074
1075/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1076 there was an overflow in folding, and no warning has been issued
1077 for this subexpression. TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW,
1078 but not vice versa. */
1079
1080#define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->common.public_flag)
1081
1082/* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1083 nonzero means name is to be accessible from outside this module.
1084 In an IDENTIFIER_NODE, nonzero means an external declaration
1085 accessible from outside this module was previously seen
1086 for this name in an inner scope. */
1087#define TREE_PUBLIC(NODE) ((NODE)->common.public_flag)
1088
1089/* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1090 of cached values, or is something else. */
1091#define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->common.public_flag)
1092
1093/* In a SAVE_EXPR, indicates that the original expression has already
1094 been substituted with a VAR_DECL that contains the value. */
1095#define SAVE_EXPR_RESOLVED_P(NODE) \
1096 (TREE_CHECK (NODE, SAVE_EXPR)->common.public_flag)
1097
1098/* In any expression, decl, or constant, nonzero means it has side effects or
1099 reevaluation of the whole expression could produce a different value.
1100 This is set if any subexpression is a function call, a side effect or a
1101 reference to a volatile variable. In a ..._DECL, this is set only if the
1102 declaration said `volatile'. This will never be set for a constant. */
1103#define TREE_SIDE_EFFECTS(NODE) \
1104 (NON_TYPE_CHECK (NODE)->common.side_effects_flag)
1105
1106/* In a LABEL_DECL, nonzero means this label had its address taken
1107 and therefore can never be deleted and is a jump target for
1108 computed gotos. */
1109#define FORCED_LABEL(NODE) ((NODE)->common.side_effects_flag)
1110
1111/* Nonzero means this expression is volatile in the C sense:
1112 its address should be of type `volatile WHATEVER *'.
1113 In other words, the declared item is volatile qualified.
1114 This is used in _DECL nodes and _REF nodes.
1115 On a FUNCTION_DECL node, this means the function does not
1116 return normally. This is the same effect as setting
1117 the attribute noreturn on the function in C.
1118
1119 In a ..._TYPE node, means this type is volatile-qualified.
1120 But use TYPE_VOLATILE instead of this macro when the node is a type,
1121 because eventually we may make that a different bit.
1122
1123 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1124#define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag)
1125
1126/* Nonzero means this node will not trap. In an INDIRECT_REF, means
1127 accessing the memory pointed to won't generate a trap. However,
1128 this only applies to an object when used appropriately: it doesn't
1129 mean that writing a READONLY mem won't trap. Similarly for
1130 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1131
1132 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1133 (or slice of the array) always belongs to the range of the array.
1134 I.e. that the access will not trap, provided that the access to
1135 the base to the array will not trap. */
1136#define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
1137
1138/* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1139 nonzero means it may not be the lhs of an assignment. */
1140#define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)
1141
1142/* Nonzero if NODE is a _DECL with TREE_READONLY set. */
1143#define TREE_READONLY_DECL_P(NODE)\
1144 (DECL_P (NODE) && TREE_READONLY (NODE))
1145
1146/* Value of expression is constant. Always on in all ..._CST nodes. May
1147 also appear in an expression or decl where the value is constant. */
1148#define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->common.constant_flag)
1149
1150/* Nonzero if NODE, a type, has had its sizes gimplified. */
1151#define TYPE_SIZES_GIMPLIFIED(NODE) (TYPE_CHECK (NODE)->common.constant_flag)
1152
1153/* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1154#define DECL_UNSIGNED(NODE) (DECL_COMMON_CHECK (NODE)->common.unsigned_flag)
1155
1156/* In a BIT_FIELD_REF, means the bitfield is to be interpreted as unsigned. */
1157#define BIT_FIELD_REF_UNSIGNED(NODE) \
1158 (BIT_FIELD_REF_CHECK (NODE)->common.unsigned_flag)
1159
1160/* In integral and pointer types, means an unsigned type. */
1161#define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->common.unsigned_flag)
1162
1163/* Nonzero in a VAR_DECL means assembler code has been written.
1164 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1165 This is interesting in an inline function, since it might not need
1166 to be compiled separately.
1167 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1168 if the sdb debugging info for the type has been written.
1169 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1170 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1171 PHI node. */
1172#define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag)
1173
1174/* Nonzero in a _DECL if the name is used in its scope.
1175 Nonzero in an expr node means inhibit warning if value is unused.
1176 In IDENTIFIER_NODEs, this means that some extern decl for this name
1177 was used.
1178 In a BLOCK, this means that the block contains variables that are used. */
1179#define TREE_USED(NODE) ((NODE)->common.used_flag)
1180
1181/* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1182 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1183#define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
1184
1185/* In a CALL_EXPR, means that it's safe to use the target of the call
1186 expansion as the return slot for a call that returns in memory. */
1187#define CALL_EXPR_RETURN_SLOT_OPT(NODE) ((NODE)->common.private_flag)
1188
1189/* In a RESULT_DECL or PARM_DECL, means that it is passed by invisible
1190 reference (and the TREE_TYPE is a pointer to the true type). */
1191#define DECL_BY_REFERENCE(NODE) (DECL_COMMON_CHECK (NODE)->common.private_flag)
1192
1193/* In a CALL_EXPR, means that the call is the jump from a thunk to the
1194 thunked-to function. */
1195#define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->common.protected_flag)
1196
1197/* In a type, nonzero means that all objects of the type are guaranteed by the
1198 language or front-end to be properly aligned, so we can indicate that a MEM
1199 of this type is aligned at least to the alignment of the type, even if it
1200 doesn't appear that it is. We see this, for example, in object-oriented
1201 languages where a tag field may show this is an object of a more-aligned
1202 variant of the more generic type.
1203
1204 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1205 freelist. */
1206#define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->common.nothrow_flag)
1207
1208/* Used in classes in C++. */
1209#define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
1210/* Used in classes in C++.
1211 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */
1212#define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag)
1213
1214/* Nonzero in a _DECL if the use of the name is defined as a
1215 deprecated feature by __attribute__((deprecated)). */
1216#define TREE_DEPRECATED(NODE) \
1217 ((NODE)->common.deprecated_flag)
1218
1219/* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1220 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1221#define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1222 (IDENTIFIER_NODE_CHECK (NODE)->common.deprecated_flag)
1223
1224/* Value of expression is function invariant. A strict subset of
1225 TREE_CONSTANT, such an expression is constant over any one function
1226 invocation, though not across different invocations. May appear in
1227 any expression node. */
1228#define TREE_INVARIANT(NODE) ((NODE)->common.invariant_flag)
1229
1230/* These flags are available for each language front end to use internally. */
1231#define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
1232#define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
1233#define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2)
1234#define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3)
1235#define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4)
1236#define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5)
1237#define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6)
1238
1239/* Define additional fields and accessors for nodes representing constants. */
1240
1241/* In an INTEGER_CST node. These two together make a 2-word integer.
1242 If the data type is signed, the value is sign-extended to 2 words
1243 even though not all of them may really be in use.
1244 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1245#define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1246#define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1247#define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1248
1249#define INT_CST_LT(A, B) \
1250 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1251 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1252 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1253
1254#define INT_CST_LT_UNSIGNED(A, B) \
1255 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1256 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1257 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1258 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1259 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1260
1261struct tree_int_cst GTY(())
1262{
1263 struct tree_common common;
1264 double_int int_cst;
1265};
1266
1267/* In a REAL_CST node. struct real_value is an opaque entity, with
1268 manipulators defined in real.h. We don't want tree.h depending on
1269 real.h and transitively on tm.h. */
1270struct real_value;
1271
1272#define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1273#define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1274
1275struct tree_real_cst GTY(())
1276{
1277 struct tree_common common;
1278 struct real_value * real_cst_ptr;
1279};
1280
1281/* In a STRING_CST */
1282#define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1283#define TREE_STRING_POINTER(NODE) \
1284 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1285
1286struct tree_string GTY(())
1287{
1288 struct tree_common common;
1289 int length;
1290 char str[1];
1291};
1292
1293/* In a COMPLEX_CST node. */
1294#define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1295#define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1296
1297struct tree_complex GTY(())
1298{
1299 struct tree_common common;
1300 tree real;
1301 tree imag;
1302};
1303
1304/* In a VECTOR_CST node. */
1305#define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1306
1307struct tree_vector GTY(())
1308{
1309 struct tree_common common;
1310 tree elements;
1311};
1312
1313#include "symtab.h"
1314
1315/* Define fields and accessors for some special-purpose tree nodes. */
1316
1317#define IDENTIFIER_LENGTH(NODE) \
1318 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1319#define IDENTIFIER_POINTER(NODE) \
1320 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1321#define IDENTIFIER_HASH_VALUE(NODE) \
1322 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1323
1324/* Translate a hash table identifier pointer to a tree_identifier
1325 pointer, and vice versa. */
1326
1327#define HT_IDENT_TO_GCC_IDENT(NODE) \
1328 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1329#define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1330
1331struct tree_identifier GTY(())
1332{
1333 struct tree_common common;
1334 struct ht_identifier id;
1335};
1336
1337/* In a TREE_LIST node. */
1338#define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1339#define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1340
1341struct tree_list GTY(())
1342{
1343 struct tree_common common;
1344 tree purpose;
1345 tree value;
1346};
1347
1348/* In a TREE_VEC node. */
1349#define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1350#define TREE_VEC_END(NODE) \
1351 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1352
1353#define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1354
1355struct tree_vec GTY(())
1356{
1357 struct tree_common common;
1358 int length;
1359 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1360};
1361
1362/* In a CONSTRUCTOR node. */
1363#define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1364
1365/* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1366 value of each element (stored within VAL). IX must be a scratch variable
1367 of unsigned integer type. */
1368#define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1369 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1370 ? false \
1371 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1372 true); \
1373 (IX)++)
1374
1375/* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1376 the value of each element (stored within VAL) and its index (stored
1377 within INDEX). IX must be a scratch variable of unsigned integer type. */
1378#define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1379 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1380 ? false \
1381 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1382 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1383 true); \
1384 (IX)++)
1385
1386/* Append a new constructor element to V, with the specified INDEX and VAL. */
1387#define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1388 do { \
1389 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1390 _ce___->index = INDEX; \
1391 _ce___->value = VALUE; \
1392 } while (0)
1393
1394/* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1395 element. INDEX can optionally design the position of VALUE: in arrays,
1396 it is the index where VALUE has to be placed; in structures, it is the
1397 FIELD_DECL of the member. */
1398typedef struct constructor_elt_d GTY(())
1399{
1400 tree index;
1401 tree value;
1402} constructor_elt;
1403
1404DEF_VEC_O(constructor_elt);
1405DEF_VEC_ALLOC_O(constructor_elt,gc);
1406
1407struct tree_constructor GTY(())
1408{
1409 struct tree_common common;
1410 VEC(constructor_elt,gc) *elts;
1411};
1412
1413/* Define fields and accessors for some nodes that represent expressions. */
1414
1415/* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1416#define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1417 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1418 && integer_zerop (TREE_OPERAND (NODE, 0)))
1419
1420/* In ordinary expression nodes. */
1421#define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1422#define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity)
1423
1424/* In a LOOP_EXPR node. */
1425#define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1426
1427#ifdef USE_MAPPED_LOCATION
1428/* The source location of this expression. Non-tree_exp nodes such as
1429 decls and constants can be shared among multiple locations, so
1430 return nothing. */
1431#define EXPR_LOCATION(NODE) \
1432 (EXPR_P (NODE) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1433#define SET_EXPR_LOCATION(NODE, FROM) \
1434 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1435#define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1436/* EXPR_LOCUS and SET_EXPR_LOCUS are deprecated. */
1437#define EXPR_LOCUS(NODE) \
1438 (EXPR_P (NODE) ? &(NODE)->exp.locus : (location_t *)NULL)
1439#define SET_EXPR_LOCUS(NODE, FROM) \
1440 do { source_location *loc_tmp = FROM; \
1441 EXPR_CHECK (NODE)->exp.locus \
1442 = loc_tmp == NULL ? UNKNOWN_LOCATION : *loc_tmp; } while (0)
1443#define EXPR_FILENAME(NODE) \
1444 LOCATION_FILE (EXPR_CHECK (NODE)->exp.locus)
1445#define EXPR_LINENO(NODE) \
1446 LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1447#else
1448/* The source location of this expression. Non-tree_exp nodes such as
1449 decls and constants can be shared among multiple locations, so
1450 return nothing. */
1451#define EXPR_LOCUS(NODE) \
1452 (EXPR_P (NODE) ? (NODE)->exp.locus : (location_t *)NULL)
1453#define SET_EXPR_LOCUS(NODE, FROM) \
1454 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1455#define SET_EXPR_LOCATION(NODE, FROM) annotate_with_locus (NODE, FROM)
1456#define EXPR_FILENAME(NODE) \
1457 (EXPR_CHECK (NODE)->exp.locus->file)
1458#define EXPR_LINENO(NODE) \
1459 (EXPR_CHECK (NODE)->exp.locus->line)
1460#define EXPR_HAS_LOCATION(NODE) (EXPR_LOCUS (NODE) != NULL)
1461#define EXPR_LOCATION(NODE) \
1462 (EXPR_HAS_LOCATION(NODE) ? *(NODE)->exp.locus : UNKNOWN_LOCATION)
1463#endif
1464
1465/* In a TARGET_EXPR node. */
1466#define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1467#define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1468#define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1469
1470/* DECL_EXPR accessor. This gives access to the DECL associated with
1471 the given declaration statement. */
1472#define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1473
1474#define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1475
1476/* SWITCH_EXPR accessors. These give access to the condition, body and
1477 original condition type (before any compiler conversions)
1478 of the switch statement, respectively. */
1479#define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1480#define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1481#define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1482
1483/* CASE_LABEL_EXPR accessors. These give access to the high and low values
1484 of a case label, respectively. */
1485#define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1486#define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1487#define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1488
1489/* The operands of a TARGET_MEM_REF. */
1490#define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1491#define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1492#define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1493#define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1494#define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1495#define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1496#define TMR_TAG(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 6))
1497
1498/* The operands of a BIND_EXPR. */
1499#define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1500#define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1501#define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1502
1503/* GOTO_EXPR accessor. This gives access to the label associated with
1504 a goto statement. */
1505#define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1506
1507/* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1508 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1509 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1510 statement. */
1511#define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1512#define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1513#define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1514#define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1515/* Nonzero if we want to create an ASM_INPUT instead of an
1516 ASM_OPERAND with no operands. */
1517#define ASM_INPUT_P(NODE) (TREE_STATIC (NODE))
1518#define ASM_VOLATILE_P(NODE) (TREE_PUBLIC (NODE))
1519
1520/* COND_EXPR accessors. */
1521#define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1522#define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1523#define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1524
1525/* LABEL_EXPR accessor. This gives access to the label associated with
1526 the given label expression. */
1527#define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1528
1529/* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1530 accessors for SSA operands. */
1531
1532/* CATCH_EXPR accessors. */
1533#define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1534#define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1535
1536/* EH_FILTER_EXPR accessors. */
1537#define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1538#define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1539#define EH_FILTER_MUST_NOT_THROW(NODE) TREE_STATIC (EH_FILTER_EXPR_CHECK (NODE))
1540
1541/* OBJ_TYPE_REF accessors. */
1542#define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1543#define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1544#define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1545
1546/* ASSERT_EXPR accessors. */
1547#define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1548#define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1549
1550/* OpenMP directive and clause accessors. */
1551
1552#define OMP_BODY(NODE) \
1553 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1554#define OMP_CLAUSES(NODE) \
1555 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1556
1557#define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1558#define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1559#define OMP_PARALLEL_FN(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 2)
1560#define OMP_PARALLEL_DATA_ARG(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 3)
1561
1562#define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1563#define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1564#define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1565#define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1566#define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1567#define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1568
1569#define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1570#define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1571
1572#define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1573
1574#define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1575#define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1576
1577#define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1578
1579#define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1580
1581#define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1582#define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1583
1584#define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1585#define OMP_CLAUSE_DECL(NODE) \
1586 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1587 OMP_CLAUSE_PRIVATE, \
1588 OMP_CLAUSE_COPYPRIVATE), 0)
1589
1590/* True on an OMP_SECTION statement that was the last lexical member.
1591 This status is meaningful in the implementation of lastprivate. */
1592#define OMP_SECTION_LAST(NODE) \
1593 TREE_PRIVATE (OMP_SECTION_CHECK (NODE))
1594
1595/* True on an OMP_RETURN statement if the return does not require a
1596 thread synchronization via some sort of barrier. The exact barrier
1597 that would otherwise be emitted is dependent on the OMP statement
1598 with which this return is associated. */
1599#define OMP_RETURN_NOWAIT(NODE) \
1600 TREE_PRIVATE (OMP_RETURN_CHECK (NODE))
1601
1602/* True on an OMP_PARALLEL statement if it represents an explicit
1603 combined parallel work-sharing constructs. */
1604#define OMP_PARALLEL_COMBINED(NODE) \
1605 TREE_PRIVATE (OMP_PARALLEL_CHECK (NODE))
1606
1607/* True on a PRIVATE clause if its decl is kept around for debugging
1608 information only and its DECL_VALUE_EXPR is supposed to point
1609 to what it has been remapped to. */
1610#define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1611 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1612
1613/* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1614 decl is present in the chain. */
1615#define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1616 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE))
1617
1618#define OMP_CLAUSE_IF_EXPR(NODE) \
1619 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1620#define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1621 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1622#define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1623 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1624
1625#define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1626 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1627#define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1628 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1629#define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1630 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1631#define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1632 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1633
1634enum omp_clause_schedule_kind
1635{
1636 OMP_CLAUSE_SCHEDULE_STATIC,
1637 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1638 OMP_CLAUSE_SCHEDULE_GUIDED,
1639 OMP_CLAUSE_SCHEDULE_RUNTIME
1640};
1641
1642#define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1643 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1644
1645enum omp_clause_default_kind
1646{
1647 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1648 OMP_CLAUSE_DEFAULT_SHARED,
1649 OMP_CLAUSE_DEFAULT_NONE,
1650 OMP_CLAUSE_DEFAULT_PRIVATE
1651};
1652
1653#define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1654 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1655
1656struct tree_exp GTY(())
1657{
1658 struct tree_common common;
1659 source_locus locus;
1660 int complexity;
1661 tree block;
1662 tree GTY ((special ("tree_exp"),
1663 desc ("TREE_CODE ((tree) &%0)")))
1664 operands[1];
1665};
1666
1667/* SSA_NAME accessors. */
1668
1669/* Returns the variable being referenced. Once released, this is the
1670 only field that can be relied upon. */
1671#define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1672
1673/* Returns the statement which defines this reference. Note that
1674 we use the same field when chaining SSA_NAME nodes together on
1675 the SSA_NAME freelist. */
1676#define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->common.chain
1677
1678/* Returns the SSA version number of this SSA name. Note that in
1679 tree SSA, version numbers are not per variable and may be recycled. */
1680#define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1681
1682/* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1683 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1684 status bit. */
1685#define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1686 SSA_NAME_CHECK (NODE)->common.asm_written_flag
1687
1688/* Nonzero if this SSA_NAME expression is currently on the free list of
1689 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1690 has no meaning for an SSA_NAME. */
1691#define SSA_NAME_IN_FREE_LIST(NODE) \
1692 SSA_NAME_CHECK (NODE)->common.nothrow_flag
1693
1694/* Attributes for SSA_NAMEs for pointer-type variables. */
1695#define SSA_NAME_PTR_INFO(N) \
1696 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1697
1698/* Get the value of this SSA_NAME, if available. */
1699#define SSA_NAME_VALUE(N) \
1700 SSA_NAME_CHECK (N)->ssa_name.value_handle
1701
1702#ifndef _TREE_FLOW_H
1703struct ptr_info_def;
1704#endif
1705
1706
1707
1708/* Immediate use linking structure. This structure is used for maintaining
1709 a doubly linked list of uses of an SSA_NAME. */
1710typedef struct ssa_use_operand_d GTY(())
1711{
1712 struct ssa_use_operand_d* GTY((skip(""))) prev;
1713 struct ssa_use_operand_d* GTY((skip(""))) next;
1714 tree GTY((skip(""))) stmt;
1715 tree *GTY((skip(""))) use;
1716} ssa_use_operand_t;
1717
1718/* Return the immediate_use information for an SSA_NAME. */
1719#define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1720
1721struct tree_ssa_name GTY(())
1722{
1723 struct tree_common common;
1724
1725 /* _DECL wrapped by this SSA name. */
1726 tree var;
1727
1728 /* SSA version number. */
1729 unsigned int version;
1730
1731 /* Pointer attributes used for alias analysis. */
1732 struct ptr_info_def *ptr_info;
1733
1734 /* Value for SSA name used by various passes.
1735
1736 Right now only invariants are allowed to persist beyond a pass in
1737 this field; in the future we will allow VALUE_HANDLEs to persist
1738 as well. */
1739 tree value_handle;
1740
1741 /* Immediate uses list for this SSA_NAME. */
1742 struct ssa_use_operand_d imm_uses;
1743};
1744
1745/* In a PHI_NODE node. */
1746
1747/* These 2 macros should be considered off limits for use by developers. If
1748 you wish to access the use or def fields of a PHI_NODE in the SSA
1749 optimizers, use the accessor macros found in tree-ssa-operands.h.
1750 These two macros are to be used only by those accessor macros, and other
1751 select places where we *absolutely* must take the address of the tree. */
1752
1753#define PHI_RESULT_TREE(NODE) PHI_NODE_CHECK (NODE)->phi.result
1754#define PHI_ARG_DEF_TREE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).def
1755
1756/* PHI_NODEs for each basic block are chained together in a single linked
1757 list. The head of the list is linked from the block annotation, and
1758 the link to the next PHI is in PHI_CHAIN. */
1759#define PHI_CHAIN(NODE) TREE_CHAIN (PHI_NODE_CHECK (NODE))
1760
1761#define PHI_NUM_ARGS(NODE) PHI_NODE_CHECK (NODE)->phi.num_args
1762#define PHI_ARG_CAPACITY(NODE) PHI_NODE_CHECK (NODE)->phi.capacity
1763#define PHI_ARG_ELT(NODE, I) PHI_NODE_ELT_CHECK (NODE, I)
1764#define PHI_ARG_EDGE(NODE, I) (EDGE_PRED (PHI_BB ((NODE)), (I)))
1765#define PHI_BB(NODE) PHI_NODE_CHECK (NODE)->phi.bb
1766#define PHI_ARG_IMM_USE_NODE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).imm_use
1767
1768struct phi_arg_d GTY(())
1769{
1770 /* imm_use MUST be the first element in struct because we do some
1771 pointer arithmetic with it. See phi_arg_index_from_use. */
1772 struct ssa_use_operand_d imm_use;
1773 tree def;
1774};
1775
1776struct tree_phi_node GTY(())
1777{
1778 struct tree_common common;
1779 tree result;
1780 int num_args;
1781 int capacity;
1782
1783 /* Basic block to that the phi node belongs. */
1784 struct basic_block_def *bb;
1785
1786 /* Arguments of the PHI node. These are maintained in the same
1787 order as predecessor edge vector BB->PREDS. */
1788 struct phi_arg_d GTY ((length ("((tree)&%h)->phi.num_args"))) a[1];
1789};
1790
1791#define OMP_CLAUSE_CODE(NODE) \
1792 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1793
1794#define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1795 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1796
1797#define OMP_CLAUSE_CODE(NODE) \
1798 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1799
1800#define OMP_CLAUSE_OPERAND(NODE, I) \
1801 OMP_CLAUSE_ELT_CHECK (NODE, I)
1802
1803struct tree_omp_clause GTY(())
1804{
1805 struct tree_common common;
1806 enum omp_clause_code code;
1807 union omp_clause_subcode {
1808 enum omp_clause_default_kind default_kind;
1809 enum omp_clause_schedule_kind schedule_kind;
1810 enum tree_code reduction_code;
1811 } GTY ((skip)) subcode;
1812 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1813};
1814
1815
1816struct varray_head_tag;
1817
1818/* In a BLOCK node. */
1819#define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1820#define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1821#define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1822/* Note: when changing this, make sure to find the places
1823 that use chainon or nreverse. */
1824#define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1825#define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1826#define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1827
1828/* Nonzero means that this block is prepared to handle exceptions
1829 listed in the BLOCK_VARS slot. */
1830#define BLOCK_HANDLER_BLOCK(NODE) \
1831 (BLOCK_CHECK (NODE)->block.handler_block_flag)
1832
1833/* An index number for this block. These values are not guaranteed to
1834 be unique across functions -- whether or not they are depends on
1835 the debugging output format in use. */
1836#define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1837
1838/* If block reordering splits a lexical block into discontiguous
1839 address ranges, we'll make a copy of the original block.
1840
1841 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1842 In that case, we have one source block that has been replicated
1843 (through inlining or unrolling) into many logical blocks, and that
1844 these logical blocks have different physical variables in them.
1845
1846 In this case, we have one logical block split into several
1847 non-contiguous address ranges. Most debug formats can't actually
1848 represent this idea directly, so we fake it by creating multiple
1849 logical blocks with the same variables in them. However, for those
1850 that do support non-contiguous regions, these allow the original
1851 logical block to be reconstructed, along with the set of address
1852 ranges.
1853
1854 One of the logical block fragments is arbitrarily chosen to be
1855 the ORIGIN. The other fragments will point to the origin via
1856 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1857 be null. The list of fragments will be chained through
1858 BLOCK_FRAGMENT_CHAIN from the origin. */
1859
1860#define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1861#define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1862
1863/* For an inlined function, this gives the location where it was called
1864 from. This is only set in the top level block, which corresponds to the
1865 inlined function scope. This is used in the debug output routines. */
1866
1867#define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1868
1869struct tree_block GTY(())
1870{
1871 struct tree_common common;
1872
1873 unsigned handler_block_flag : 1;
1874 unsigned abstract_flag : 1;
1875 unsigned block_num : 30;
1876
1877 tree vars;
1878 tree subblocks;
1879 tree supercontext;
1880 tree abstract_origin;
1881 tree fragment_origin;
1882 tree fragment_chain;
1883 location_t locus;
1884};
1885
1886/* Define fields and accessors for nodes representing data types. */
1887
1888/* See tree.def for documentation of the use of these fields.
1889 Look at the documentation of the various ..._TYPE tree codes.
1890
1891 Note that the type.values, type.minval, and type.maxval fields are
1892 overloaded and used for different macros in different kinds of types.
1893 Each macro must check to ensure the tree node is of the proper kind of
1894 type. Note also that some of the front-ends also overload these fields,
1895 so they must be checked as well. */
1896
1897#define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
1898#define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
1899#define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
1900#define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode)
1901#define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
1902#define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
1903#define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
1904#define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
1905#define TYPE_ORIG_SIZE_TYPE(NODE) \
1906 (INTEGER_TYPE_CHECK (NODE)->type.values \
1907 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
1908#define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
1909#define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
1910#define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
1911#define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
1912#define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
1913#define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
1914#define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
1915#define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
1916#define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
1917#define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
1918#define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
1919#define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
1920#define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
1921#define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
1922#define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
1923#define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
1924#define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
1925#define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
1926#define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
1927#define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
1928
1929/* For a VECTOR_TYPE node, this describes a different type which is emitted
1930 in the debugging output. We use this to describe a vector as a
1931 structure containing an array. */
1932#define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
1933
1934/* For record and union types, information about this type, as a base type
1935 for itself. */
1936#define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1937
1938/* For non record and union types, used in a language-dependent way. */
1939#define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1940
1941/* The (language-specific) typed-based alias set for this type.
1942 Objects whose TYPE_ALIAS_SETs are different cannot alias each
1943 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
1944 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
1945 type can alias objects of any type. */
1946#define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
1947
1948/* Nonzero iff the typed-based alias set for this type has been
1949 calculated. */
1950#define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
1951
1952/* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
1953 to this type. */
1954#define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
1955
1956/* The alignment necessary for objects of this type.
1957 The value is an int, measured in bits. */
1958#define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
1959
1960/* 1 if the alignment for this type was requested by "aligned" attribute,
1961 0 if it is the default for this type. */
1962#define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
1963
1964/* The alignment for NODE, in bytes. */
1965#define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
1966
1967/* If your language allows you to declare types, and you want debug info
1968 for them, then you need to generate corresponding TYPE_DECL nodes.
1969 These "stub" TYPE_DECL nodes have no name, and simply point at the
1970 type node. You then set the TYPE_STUB_DECL field of the type node
1971 to point back at the TYPE_DECL node. This allows the debug routines
1972 to know that the two nodes represent the same type, so that we only
1973 get one debug info record for them. */
1974#define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
1975
1976/* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
1977 has BLKmode only because it lacks the alignment requirement for
1978 its size. */
1979#define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
1980
1981/* In an INTEGER_TYPE, it means the type represents a size. We use
1982 this both for validity checking and to permit optimizations that
1983 are unsafe for other types. Note that the C `size_t' type should
1984 *not* have this flag set. The `size_t' type is simply a typedef
1985 for an ordinary integer type that happens to be the type of an
1986 expression returned by `sizeof'; `size_t' has no special
1987 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
1988 always actual sizes. */
1989#define TYPE_IS_SIZETYPE(NODE) \
1990 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1991
1992/* In a FUNCTION_TYPE, indicates that the function returns with the stack
1993 pointer depressed. */
1994#define TYPE_RETURNS_STACK_DEPRESSED(NODE) \
1995 (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1996
1997/* Nonzero in a type considered volatile as a whole. */
1998#define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->common.volatile_flag)
1999
2000/* Means this type is const-qualified. */
2001#define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->common.readonly_flag)
2002
2003/* If nonzero, this type is `restrict'-qualified, in the C sense of
2004 the term. */
2005#define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2006
2007/* There is a TYPE_QUAL value for each type qualifier. They can be
2008 combined by bitwise-or to form the complete set of qualifiers for a
2009 type. */
2010
2011#define TYPE_UNQUALIFIED 0x0
2012#define TYPE_QUAL_CONST 0x1
2013#define TYPE_QUAL_VOLATILE 0x2
2014#define TYPE_QUAL_RESTRICT 0x4
2015
2016/* The set of type qualifiers for this type. */
2017#define TYPE_QUALS(NODE) \
2018 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2019 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2020 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2021
2022/* These flags are available for each language front end to use internally. */
2023#define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2024#define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2025#define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2026#define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2027#define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2028#define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2029#define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2030
2031/* Used to keep track of visited nodes in tree traversals. This is set to
2032 0 by copy_node and make_node. */
2033#define TREE_VISITED(NODE) ((NODE)->common.visited)
2034
2035/* If set in an ARRAY_TYPE, indicates a string type (for languages
2036 that distinguish string from array of char).
2037 If set in a INTEGER_TYPE, indicates a character type. */
2038#define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2039
2040/* If non-NULL, this is an upper bound of the size (in bytes) of an
2041 object of the given ARRAY_TYPE. This allows temporaries to be
2042 allocated. */
2043#define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2044 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2045
2046/* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2047#define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2048 (((unsigned HOST_WIDE_INT) 1) \
2049 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2050
2051/* Set precision to n when we have 2^n sub-parts of the vector. */
2052#define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2053 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2054
2055/* Indicates that objects of this type must be initialized by calling a
2056 function when they are created. */
2057#define TYPE_NEEDS_CONSTRUCTING(NODE) \
2058 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2059
2060/* Indicates that objects of this type (a UNION_TYPE), should be passed
2061 the same way that the first union alternative would be passed. */
2062#define TYPE_TRANSPARENT_UNION(NODE) \
2063 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2064
2065/* For an ARRAY_TYPE, indicates that it is not permitted to
2066 take the address of a component of the type. */
2067#define TYPE_NONALIASED_COMPONENT(NODE) \
2068 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2069
2070/* Indicated that objects of this type should be laid out in as
2071 compact a way as possible. */
2072#define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
2073
2074/* Used by type_contains_placeholder_p to avoid recomputation.
2075 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2076 this field directly. */
2077#define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2078 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2079
2080struct die_struct;
2081
2082struct tree_type GTY(())
2083{
2084 struct tree_common common;
2085 tree values;
2086 tree size;
2087 tree size_unit;
2088 tree attributes;
2089 unsigned int uid;
2090
2091 unsigned int precision : 9;
2092 ENUM_BITFIELD(machine_mode) mode : 7;
2093
2094 unsigned string_flag : 1;
2095 unsigned no_force_blk_flag : 1;
2096 unsigned needs_constructing_flag : 1;
2097 unsigned transparent_union_flag : 1;
2098 unsigned packed_flag : 1;
2099 unsigned restrict_flag : 1;
2100 unsigned contains_placeholder_bits : 2;
2101
2102 unsigned lang_flag_0 : 1;
2103 unsigned lang_flag_1 : 1;
2104 unsigned lang_flag_2 : 1;
2105 unsigned lang_flag_3 : 1;
2106 unsigned lang_flag_4 : 1;
2107 unsigned lang_flag_5 : 1;
2108 unsigned lang_flag_6 : 1;
2109 unsigned user_align : 1;
2110
2111 unsigned int align;
2112 tree pointer_to;
2113 tree reference_to;
2114 union tree_type_symtab {
2115 int GTY ((tag ("0"))) address;
2116 char * GTY ((tag ("1"))) pointer;
2117 struct die_struct * GTY ((tag ("2"))) die;
2118 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2119 descbits ("2"))) symtab;
2120 tree name;
2121 tree minval;
2122 tree maxval;
2123 tree next_variant;
2124 tree main_variant;
2125 tree binfo;
2126 tree context;
2127 HOST_WIDE_INT alias_set;
2128 /* Points to a structure whose details depend on the language in use. */
2129 struct lang_type *lang_specific;
2130};
2131
2132/* Define accessor macros for information about type inheritance
2133 and basetypes.
2134
2135 A "basetype" means a particular usage of a data type for inheritance
2136 in another type. Each such basetype usage has its own "binfo"
2137 object to describe it. The binfo object is a TREE_VEC node.
2138
2139 Inheritance is represented by the binfo nodes allocated for a
2140 given type. For example, given types C and D, such that D is
2141 inherited by C, 3 binfo nodes will be allocated: one for describing
2142 the binfo properties of C, similarly one for D, and one for
2143 describing the binfo properties of D as a base type for C.
2144 Thus, given a pointer to class C, one can get a pointer to the binfo
2145 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2146
2147/* BINFO specific flags. */
2148
2149/* Nonzero means that the derivation chain is via a `virtual' declaration. */
2150#define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->common.static_flag)
2151
2152/* Flags for language dependent use. */
2153#define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2154#define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2155#define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2156#define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2157#define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2158#define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2159#define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2160
2161/* The actual data type node being inherited in this basetype. */
2162#define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2163
2164/* The offset where this basetype appears in its containing type.
2165 BINFO_OFFSET slot holds the offset (in bytes)
2166 from the base of the complete object to the base of the part of the
2167 object that is allocated on behalf of this `type'.
2168 This is always 0 except when there is multiple inheritance. */
2169
2170#define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2171#define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2172
2173/* The virtual function table belonging to this basetype. Virtual
2174 function tables provide a mechanism for run-time method dispatching.
2175 The entries of a virtual function table are language-dependent. */
2176
2177#define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2178
2179/* The virtual functions in the virtual function table. This is
2180 a TREE_LIST that is used as an initial approximation for building
2181 a virtual function table for this basetype. */
2182#define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2183
2184/* A vector of binfos for the direct basetypes inherited by this
2185 basetype.
2186
2187 If this basetype describes type D as inherited in C, and if the
2188 basetypes of D are E and F, then this vector contains binfos for
2189 inheritance of E and F by C. */
2190#define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2191
2192/* The number of basetypes for NODE. */
2193#define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2194
2195/* Accessor macro to get to the Nth base binfo of this binfo. */
2196#define BINFO_BASE_BINFO(NODE,N) \
2197 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2198#define BINFO_BASE_ITERATE(NODE,N,B) \
2199 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2200#define BINFO_BASE_APPEND(NODE,T) \
2201 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2202
2203/* For a BINFO record describing a virtual base class, i.e., one where
2204 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2205 base. The actual contents are language-dependent. In the C++
2206 front-end this field is an INTEGER_CST giving an offset into the
2207 vtable where the offset to the virtual base can be found. */
2208#define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2209
2210/* Indicates the accesses this binfo has to its bases. The values are
2211 access_public_node, access_protected_node or access_private_node.
2212 If this array is not present, public access is implied. */
2213#define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2214
2215#define BINFO_BASE_ACCESS(NODE,N) \
2216 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2217#define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2218 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2219
2220/* The index in the VTT where this subobject's sub-VTT can be found.
2221 NULL_TREE if there is no sub-VTT. */
2222#define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2223
2224/* The index in the VTT where the vptr for this subobject can be
2225 found. NULL_TREE if there is no secondary vptr in the VTT. */
2226#define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2227
2228/* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2229 inheriting this base for non-virtual bases. For virtual bases it
2230 points either to the binfo for which this is a primary binfo, or to
2231 the binfo of the most derived type. */
2232#define BINFO_INHERITANCE_CHAIN(NODE) \
2233 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2234
2235struct tree_binfo GTY (())
2236{
2237 struct tree_common common;
2238
2239 tree offset;
2240 tree vtable;
2241 tree virtuals;
2242 tree vptr_field;
2243 VEC(tree,gc) *base_accesses;
2244 tree inheritance;
2245
2246 tree vtt_subvtt;
2247 tree vtt_vptr;
2248
2249 VEC(tree,none) base_binfos;
2250};
2251
2252
2253/* Define fields and accessors for nodes representing declared names. */
2254
2255/* Nonzero if DECL represents a variable for the SSA passes. */
2256#define SSA_VAR_P(DECL) \
2257 (TREE_CODE (DECL) == VAR_DECL \
2258 || TREE_CODE (DECL) == PARM_DECL \
2259 || TREE_CODE (DECL) == RESULT_DECL \
2260 || MTAG_P (DECL) \
2261 || (TREE_CODE (DECL) == SSA_NAME \
2262 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2263 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2264 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL \
2265 || MTAG_P (SSA_NAME_VAR (DECL)))))
2266
2267
2268
2269
2270/* Enumerate visibility settings. */
2271#ifndef SYMBOL_VISIBILITY_DEFINED
2272#define SYMBOL_VISIBILITY_DEFINED
2273enum symbol_visibility
2274{
2275 VISIBILITY_DEFAULT,
2276 VISIBILITY_PROTECTED,
2277 VISIBILITY_HIDDEN,
2278 VISIBILITY_INTERNAL
2279};
2280#endif
2281
2282struct function;
2283
2284
2285/* This is the name of the object as written by the user.
2286 It is an IDENTIFIER_NODE. */
2287#define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2288
2289/* Every ..._DECL node gets a unique number. */
2290#define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2291
2292/* These two fields describe where in the source code the declaration
2293 was. If the declaration appears in several places (as for a C
2294 function that is declared first and then defined later), this
2295 information should refer to the definition. */
2296#define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2297#define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2298#define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2299#ifdef USE_MAPPED_LOCATION
2300#define DECL_IS_BUILTIN(DECL) \
2301 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2302#else
2303#define DECL_IS_BUILTIN(DECL) (DECL_SOURCE_LINE(DECL) == 0)
2304#endif
2305
2306/* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2307 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2308 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2309 points to either the FUNCTION_DECL for the containing function,
2310 the RECORD_TYPE or UNION_TYPE for the containing type, or
2311 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2312 scope". */
2313#define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2314#define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2315struct tree_decl_minimal GTY(())
2316{
2317 struct tree_common common;
2318 location_t locus;
2319 unsigned int uid;
2320 tree name;
2321 tree context;
2322};
2323
2324/* When computing aliasing information, we represent the memory pointed-to
2325 by pointers with artificial variables called "memory tags" (MT). There
2326 are two kinds of tags, namely symbol and name:
2327
2328 Symbol tags (SMT) are used in flow-insensitive alias analysis, they
2329 represent all the pointed-to locations and variables pointed-to by
2330 the same pointer symbol. Usually, this set is computed using
2331 type-based analysis (i.e., alias set classes), but this may not
2332 always be the case.
2333
2334 Name tags (NMT) are used in flow-sensitive points-to alias
2335 analysis, they represent the variables and memory locations
2336 pointed-to by a specific SSA_NAME pointer.
2337
2338 In general, given a pointer P with a symbol tag SMT, the alias set
2339 of SMT should be the union of all the alias sets of the NMTs of
2340 every SSA_NAME for P. */
2341struct tree_memory_tag GTY(())
2342{
2343 struct tree_decl_minimal common;
2344 unsigned int is_global:1;
2345 unsigned int is_used_alone:1;
2346 unsigned int old_used_alone:1;
2347};
2348
2349#define MTAG_GLOBAL(NODE) (TREE_MEMORY_TAG_CHECK (NODE)->mtag.is_global)
2350
2351/* This flag is true if a SMT is used as the V_MAY_DEF or VUSE operand
2352 directly, because the access had all of the SMT's aliases pruned
2353 from it. */
2354#define SMT_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.is_used_alone)
2355
2356/* This flag is used to temporarily store the old value of the used alone
2357 flag when updating so we know whether to mark the symbol for
2358 renaming. */
2359#define SMT_OLD_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.old_used_alone)
2360
2361struct tree_struct_field_tag GTY(())
2362{
2363 struct tree_memory_tag common;
2364
2365 /* Parent variable. */
2366 tree parent_var;
2367
2368 /* Offset inside structure. */
2369 unsigned HOST_WIDE_INT offset;
2370
2371 /* Size of the field. */
2372 unsigned HOST_WIDE_INT size;
2373
2374};
2375#define SFT_PARENT_VAR(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.parent_var)
2376#define SFT_OFFSET(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.offset)
2377#define SFT_SIZE(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.size)
2378
2379/* For any sort of a ..._DECL node, this points to the original (abstract)
2380 decl node which this decl is an instance of, or else it is NULL indicating
2381 that this decl is not an instance of some other decl. For example,
2382 in a nested declaration of an inline function, this points back to the
2383 definition. */
2384#define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2385
2386/* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2387 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2388#define DECL_ORIGIN(NODE) \
2389 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2390
2391/* Nonzero for any sort of ..._DECL node means this decl node represents an
2392 inline instance of some original (abstract) decl from an inline function;
2393 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2394 nodes can also have their abstract origin set to themselves. */
2395#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2396 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2397
2398/* In a DECL this is the field where attributes are stored. */
2399#define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2400
2401/* For a FUNCTION_DECL, holds the tree of BINDINGs.
2402 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2403 For a VAR_DECL, holds the initial value.
2404 For a PARM_DECL, not used--default
2405 values for parameters are encoded in the type of the function,
2406 not in the PARM_DECL slot.
2407 For a FIELD_DECL, this is used for enumeration values and the C
2408 frontend uses it for temporarily storing bitwidth of bitfields.
2409
2410 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2411#define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2412
2413/* Holds the size of the datum, in bits, as a tree expression.
2414 Need not be constant. */
2415#define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2416/* Likewise for the size in bytes. */
2417#define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2418/* Holds the alignment required for the datum, in bits. */
2419#define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.u1.a.align)
2420/* The alignment of NODE, in bytes. */
2421#define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2422/* For FIELD_DECLs, off_align holds the number of low-order bits of
2423 DECL_FIELD_OFFSET which are known to be always zero.
2424 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2425 has. */
2426#define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.user_align)
2427/* Holds the machine mode corresponding to the declaration of a variable or
2428 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2429 FIELD_DECL. */
2430#define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2431
2432/* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2433 operation it is. Note, however, that this field is overloaded, with
2434 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2435 checked before any access to the former. */
2436#define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_common.u1.f)
2437#define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2438 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2439
2440/* Nonzero for a given ..._DECL node means that the name of this node should
2441 be ignored for symbolic debug purposes. */
2442#define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2443
2444/* Nonzero for a given ..._DECL node means that this node represents an
2445 "abstract instance" of the given declaration (e.g. in the original
2446 declaration of an inline function). When generating symbolic debugging
2447 information, we mustn't try to generate any address information for nodes
2448 marked as "abstract instances" because we don't actually generate
2449 any code or allocate any data space for such instances. */
2450#define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2451
2452/* Language-specific decl information. */
2453#define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2454
2455/* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2456 do not allocate storage, and refer to a definition elsewhere. Note that
2457 this does not necessarily imply the entity represented by NODE
2458 has no program source-level definition in this translation unit. For
2459 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2460 DECL_EXTERNAL may be true simultaneously; that can be the case for
2461 a C99 "extern inline" function. */
2462#define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_2)
2463
2464/* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
2465 initializations. */
2466#define DEFAULT_INIT_PRIORITY 65535
2467#define MAX_INIT_PRIORITY 65535
2468#define MAX_RESERVED_INIT_PRIORITY 100
2469
2470
2471/* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2472 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2473
2474 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2475
2476 Also set in some languages for variables, etc., outside the normal
2477 lexical scope, such as class instance variables. */
2478#define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2479
2480/* Used in VAR_DECLs to indicate that the variable is a vtable.
2481 Used in FIELD_DECLs for vtable pointers.
2482 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2483#define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2484
2485/* Used to indicate that this DECL represents a compiler-generated entity. */
2486#define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2487
2488/* Additional flags for language-specific uses. */
2489#define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2490#define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2491#define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2492#define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2493#define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2494#define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2495#define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2496#define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2497
2498/* Used to indicate an alias set for the memory pointed to by this
2499 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2500 pointer (or reference) type. */
2501#define DECL_POINTER_ALIAS_SET(NODE) \
2502 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2503
2504/* Nonzero if an alias set has been assigned to this declaration. */
2505#define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2506 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2507
2508/* Nonzero for a decl which is at file scope. */
2509#define DECL_FILE_SCOPE_P(EXP) \
2510 (! DECL_CONTEXT (EXP) \
2511 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2512
2513/* Nonzero for a decl that is decorated using attribute used.
2514 This indicates compiler tools that this decl needs to be preserved. */
2515#define DECL_PRESERVE_P(DECL) \
2516 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2517
2518/* For function local variables of COMPLEX type, indicates that the
2519 variable is not aliased, and that all modifications to the variable
2520 have been adjusted so that they are killing assignments. Thus the
2521 variable may now be treated as a GIMPLE register, and use real
2522 instead of virtual ops in SSA form. */
2523#define DECL_COMPLEX_GIMPLE_REG_P(DECL) \
2524 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2525
2526/* This is true if DECL is call clobbered in the current function.
2527 The result of this flag should always be the same as
2528 bitmap_bit_p (call_clobbered_vars, DECL_UID (decl)). */
2529#define DECL_CALL_CLOBBERED(DECL) \
2530 DECL_COMMON_CHECK (DECL)->decl_common.call_clobbered_flag
2531
2532struct tree_decl_common GTY(())
2533{
2534 struct tree_decl_minimal common;
2535 tree size;
2536
2537 ENUM_BITFIELD(machine_mode) mode : 8;
2538
2539 unsigned nonlocal_flag : 1;
2540 unsigned virtual_flag : 1;
2541 unsigned ignored_flag : 1;
2542 unsigned abstract_flag : 1;
2543 unsigned artificial_flag : 1;
2544 unsigned user_align : 1;
2545 unsigned preserve_flag: 1;
2546 unsigned debug_expr_is_from : 1;
2547
2548 unsigned lang_flag_0 : 1;
2549 unsigned lang_flag_1 : 1;
2550 unsigned lang_flag_2 : 1;
2551 unsigned lang_flag_3 : 1;
2552 unsigned lang_flag_4 : 1;
2553 unsigned lang_flag_5 : 1;
2554 unsigned lang_flag_6 : 1;
2555 unsigned lang_flag_7 : 1;
2556
2557 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2558 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2559 unsigned decl_flag_0 : 1;
2560 /* In FIELD_DECL, this is DECL_PACKED. */
2561 unsigned decl_flag_1 : 1;
2562 /* In FIELD_DECL, this is DECL_BIT_FIELD
2563 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2564 In TYPE_DECL, this is TYPE_DECL_SUPRESS_DEBUG. */
2565 unsigned decl_flag_2 : 1;
2566 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2567 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR. */
2568 unsigned decl_flag_3 : 1;
2569 /* Logically, these two would go in a theoretical base shared by var and
2570 parm decl. */
2571 unsigned gimple_reg_flag : 1;
2572 unsigned call_clobbered_flag : 1;
2573
2574 union tree_decl_u1 {
2575 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
2576 DECL_FUNCTION_CODE. */
2577 enum built_in_function f;
2578 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this
2579 is used by language-dependent code. */
2580 HOST_WIDE_INT i;
2581 /* DECL_ALIGN and DECL_OFFSET_ALIGN. (These are not used for
2582 FUNCTION_DECLs). */
2583 struct tree_decl_u1_a {
2584 unsigned int align : 24;
2585 unsigned int off_align : 8;
2586 } a;
2587 } GTY ((skip)) u1;
2588
2589 tree size_unit;
2590 tree initial;
2591 tree attributes;
2592 tree abstract_origin;
2593
2594 HOST_WIDE_INT pointer_alias_set;
2595 /* Points to a structure whose details depend on the language in use. */
2596 struct lang_decl *lang_specific;
2597};
2598
2599extern tree decl_value_expr_lookup (tree);
2600extern void decl_value_expr_insert (tree, tree);
2601
2602/* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2603 if transformations have made this more complicated than evaluating the
2604 decl itself. This should only be used for debugging; once this field has
2605 been set, the decl itself may not legitimately appear in the function. */
2606#define DECL_HAS_VALUE_EXPR_P(NODE) \
2607 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_3)
2608#define DECL_VALUE_EXPR(NODE) \
2609 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2610#define SET_DECL_VALUE_EXPR(NODE, VAL) \
2611 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2612
2613/* Holds the RTL expression for the value of a variable or function.
2614 This value can be evaluated lazily for functions, variables with
2615 static storage duration, and labels. */
2616#define DECL_RTL(NODE) \
2617 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2618 ? (NODE)->decl_with_rtl.rtl \
2619 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2620
2621/* Set the DECL_RTL for NODE to RTL. */
2622#define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2623
2624/* Returns nonzero if NODE is a tree node that can contain RTL. */
2625#define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2626
2627/* Returns nonzero if the DECL_RTL for NODE has already been set. */
2628#define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2629
2630/* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2631 NODE1, it will not be set for NODE2; this is a lazy copy. */
2632#define COPY_DECL_RTL(NODE1, NODE2) \
2633 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2634
2635/* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2636#define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2637
2638/* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2639#define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2640
2641struct tree_decl_with_rtl GTY(())
2642{
2643 struct tree_decl_common common;
2644 rtx rtl;
2645};
2646
2647/* In a FIELD_DECL, this is the field position, counting in bytes, of the
2648 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2649 of the structure. */
2650#define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2651
2652/* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2653 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2654 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2655 natural alignment of the field's type). */
2656#define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2657
2658/* In a FIELD_DECL, this indicates whether the field was a bit-field and
2659 if so, the type that was originally specified for it.
2660 TREE_TYPE may have been modified (in finish_struct). */
2661#define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2662
2663/* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2664 if nonzero, indicates that the field occupies the type. */
2665#define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2666
2667/* For FIELD_DECLs, off_align holds the number of low-order bits of
2668 DECL_FIELD_OFFSET which are known to be always zero.
2669 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2670 has. */
2671#define DECL_OFFSET_ALIGN(NODE) \
2672 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align)
2673
2674/* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2675#define SET_DECL_OFFSET_ALIGN(NODE, X) \
2676 (FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align = exact_log2 ((X) & -(X)))
2677/* 1 if the alignment for this type was requested by "aligned" attribute,
2678 0 if it is the default for this type. */
2679
2680/* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2681 which this FIELD_DECL is defined. This information is needed when
2682 writing debugging information about vfield and vbase decls for C++. */
2683#define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2684
2685/* In a FIELD_DECL, indicates this field should be bit-packed. */
2686#define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2687
2688/* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2689 specially. */
2690#define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2691
2692/* Used in a FIELD_DECL to indicate that we cannot form the address of
2693 this component. */
2694#define DECL_NONADDRESSABLE_P(NODE) \
2695 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_3)
2696
2697struct tree_field_decl GTY(())
2698{
2699 struct tree_decl_common common;
2700
2701 tree offset;
2702 tree bit_field_type;
2703 tree qualifier;
2704 tree bit_offset;
2705 tree fcontext;
2706
2707};
2708
2709/* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2710 dense, unique within any one function, and may be used to index arrays.
2711 If the value is -1, then no UID has been assigned. */
2712#define LABEL_DECL_UID(NODE) \
2713 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2714
2715/* In LABEL_DECL nodes, nonzero means that an error message about
2716 jumping into such a binding contour has been printed for this label. */
2717#define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2718
2719struct tree_label_decl GTY(())
2720{
2721 struct tree_decl_with_rtl common;
2722 /* Java's verifier has some need to store information about labels,
2723 and was using fields that no longer exist on labels.
2724 Once the verifier doesn't need these anymore, they should be removed. */
2725 tree java_field_1;
2726 tree java_field_2;
2727 tree java_field_3;
2728 unsigned int java_field_4;
2729
2730};
2731
2732struct tree_result_decl GTY(())
2733{
2734 struct tree_decl_with_rtl common;
2735};
2736
2737struct tree_const_decl GTY(())
2738{
2739 struct tree_decl_with_rtl common;
2740};
2741
2742/* For a PARM_DECL, records the data type used to pass the argument,
2743 which may be different from the type seen in the program. */
2744#define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2745
2746/* For PARM_DECL, holds an RTL for the stack slot or register
2747 where the data was actually passed. */
2748#define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2749
2750struct tree_parm_decl GTY(())
2751{
2752 struct tree_decl_with_rtl common;
2753 rtx incoming_rtl;
2754};
2755
2756
2757/* Nonzero in a decl means that the gimplifier has seen (or placed)
2758 this variable in a BIND_EXPR. */
2759#define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2760 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2761
2762/* Used to indicate that the linkage status of this DECL is not yet known,
2763 so it should not be output now. */
2764#define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2765
2766/* Nonzero for a given ..._DECL node means that no warnings should be
2767 generated just because this node is unused. */
2768#define DECL_IN_SYSTEM_HEADER(NODE) \
2769 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.in_system_header_flag)
2770
2771 /* Used to indicate that this DECL has weak linkage. */
2772#define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2773
2774/* Internal to the gimplifier. Indicates that the value is a formal
2775 temporary controlled by the gimplifier. */
2776#define DECL_GIMPLE_FORMAL_TEMP_P(DECL) \
2777 DECL_WITH_VIS_CHECK (DECL)->decl_with_vis.gimple_formal_temp
2778
2779/* Used to indicate that the DECL is a dllimport. */
2780#define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2781
2782/* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2783 based on a variable with a restrict qualified type. If it is,
2784 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2785 it is based. */
2786
2787#define DECL_BASED_ON_RESTRICT_P(NODE) \
2788 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2789#define DECL_GET_RESTRICT_BASE(NODE) \
2790 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2791#define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2792 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2793
2794extern tree decl_restrict_base_lookup (tree);
2795extern void decl_restrict_base_insert (tree, tree);
2796
2797/* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2798 not be put out unless it is needed in this translation unit.
2799 Entities like this are shared across translation units (like weak
2800 entities), but are guaranteed to be generated by any translation
2801 unit that needs them, and therefore need not be put out anywhere
2802 where they are not needed. DECL_COMDAT is just a hint to the
2803 back-end; it is up to front-ends which set this flag to ensure
2804 that there will never be any harm, other than bloat, in putting out
2805 something which is DECL_COMDAT. */
2806#define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2807
2808/* A replaceable function is one which may be replaced at link-time
2809 with an entirely different definition, provided that the
2810 replacement has the same type. For example, functions declared
2811 with __attribute__((weak)) on most systems are replaceable.
2812
2813 COMDAT functions are not replaceable, since all definitions of the
2814 function must be equivalent. It is important that COMDAT functions
2815 not be treated as replaceable so that use of C++ template
2816 instantiations is not penalized.
2817
2818 For example, DECL_REPLACEABLE is used to determine whether or not a
2819 function (including a template instantiation) which is not
2820 explicitly declared "inline" can be inlined. If the function is
2821 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2822 implementation chosen at link-time may be different. However, a
2823 function that is not DECL_REPLACEABLE can be inlined, since all
2824 versions of the function will be functionally identical. */
2825#define DECL_REPLACEABLE_P(NODE) \
2826 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2827
2828/* The name of the object as the assembler will see it (but before any
2829 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2830 as DECL_NAME. It is an IDENTIFIER_NODE. */
2831#define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2832
2833/* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2834 This is true of all DECL nodes except FIELD_DECL. */
2835#define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2836 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2837
2838/* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2839 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2840 yet. */
2841#define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2842 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2843
2844/* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2845#define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2846 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2847
2848/* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2849 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2850 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2851 semantics of using this macro, are different than saying:
2852
2853 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2854
2855 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2856
2857#define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2858 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2859 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2860 DECL_ASSEMBLER_NAME (DECL1)) \
2861 : (void) 0)
2862
2863/* Records the section name in a section attribute. Used to pass
2864 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2865#define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2866
2867/* Value of the decls's visibility attribute */
2868#define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2869
2870/* Nonzero means that the decl had its visibility specified rather than
2871 being inferred. */
2872#define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2873
2874/* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2875 multiple translation units should be merged. */
2876#define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2877
2878struct tree_decl_with_vis GTY(())
2879{
2880 struct tree_decl_with_rtl common;
2881 tree assembler_name;
2882 tree section_name;
2883
2884 /* Belong to VAR_DECL exclusively. */
2885 unsigned defer_output:1;
2886 unsigned hard_register:1;
2887 unsigned thread_local:1;
2888 unsigned common_flag:1;
2889 unsigned in_text_section : 1;
2890 unsigned gimple_formal_temp : 1;
2891 unsigned dllimport_flag : 1;
2892 unsigned based_on_restrict_p : 1;
2893 /* Used by C++. Might become a generic decl flag. */
2894 unsigned shadowed_for_var_p : 1;
2895
2896 /* Don't belong to VAR_DECL exclusively. */
2897 unsigned in_system_header_flag : 1;
2898 unsigned weak_flag:1;
2899 unsigned seen_in_bind_expr : 1;
2900 unsigned comdat_flag : 1;
2901 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2902 unsigned visibility_specified : 1;
2903 /* Belong to FUNCTION_DECL exclusively. */
2904 unsigned one_only : 1;
2905 unsigned init_priority_p:1;
2906
2907 /* Belongs to VAR_DECL exclusively. */
2908 ENUM_BITFIELD(tls_model) tls_model : 3;
2909 /* 11 unused bits. */
2910};
2911
2912/* In a VAR_DECL that's static,
2913 nonzero if the space is in the text section. */
2914#define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2915
2916/* Nonzero for a given ..._DECL node means that this node should be
2917 put in .common, if possible. If a DECL_INITIAL is given, and it
2918 is not error_mark_node, then the decl cannot be put in .common. */
2919#define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2920
2921/* In a VAR_DECL, nonzero if the decl is a register variable with
2922 an explicit asm specification. */
2923#define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2924
2925extern tree decl_debug_expr_lookup (tree);
2926extern void decl_debug_expr_insert (tree, tree);
2927/* For VAR_DECL, this is set to either an expression that it was split
2928 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2929 subexpressions that it was split into. */
2930#define DECL_DEBUG_EXPR(NODE) \
2931 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2932
2933#define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2934 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2935
2936
2937extern unsigned short decl_init_priority_lookup (tree);
2938extern void decl_init_priority_insert (tree, unsigned short);
2939
2940/* In a non-local VAR_DECL with static storage duration, this is the
2941 initialization priority. If this value is zero, the NODE will be
2942 initialized at the DEFAULT_INIT_PRIORITY. Only used by C++ FE*/
2943
2944#define DECL_HAS_INIT_PRIORITY_P(NODE) \
2945 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
2946#define DECL_INIT_PRIORITY(NODE) \
2947 (decl_init_priority_lookup (VAR_DECL_CHECK (NODE)))
2948#define SET_DECL_INIT_PRIORITY(NODE, VAL) \
2949 (decl_init_priority_insert (VAR_DECL_CHECK (NODE), VAL))
2950
2951/* In a VAR_DECL, the model to use if the data should be allocated from
2952 thread-local storage. */
2953#define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
2954
2955/* In a VAR_DECL, nonzero if the data should be allocated from
2956 thread-local storage. */
2957#define DECL_THREAD_LOCAL_P(NODE) \
2958 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model != TLS_MODEL_NONE)
2959
2960struct tree_var_decl GTY(())
2961{
2962 struct tree_decl_with_vis common;
2963};
2964
2965
2966/* This field is used to reference anything in decl.result and is meant only
2967 for use by the garbage collector. */
2968#define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
2969
2970/* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
2971 Before the struct containing the FUNCTION_DECL is laid out,
2972 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
2973 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
2974 function. When the class is laid out, this pointer is changed
2975 to an INTEGER_CST node which is suitable for use as an index
2976 into the virtual function table.
2977 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
2978#define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
2979
2980struct tree_decl_non_common GTY(())
2981
2982{
2983 struct tree_decl_with_vis common;
2984 /* C++ uses this in namespaces. */
2985 tree saved_tree;
2986 /* C++ uses this in templates. */
2987 tree arguments;
2988 /* Almost all FE's use this. */
2989 tree result;
2990 /* C++ uses this in namespaces. */
2991 tree vindex;
2992};
2993
2994/* In FUNCTION_DECL, holds the decl for the return value. */
2995#define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
2996
2997/* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
2998#define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
2999
3000/* In a FUNCTION_DECL, the saved representation of the body of the
3001 entire function. */
3002#define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3003
3004/* Nonzero in a FUNCTION_DECL means this function should be treated
3005 as if it were a malloc, meaning it returns a pointer that is
3006 not an alias. */
3007#define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3008
3009/* Nonzero in a FUNCTION_DECL means this function may return more
3010 than once. */
3011#define DECL_IS_RETURNS_TWICE(NODE) \
3012 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3013
3014/* Nonzero in a FUNCTION_DECL means this function should be treated
3015 as "pure" function (like const function, but may read global memory). */
3016#define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3017
3018/* Nonzero in a FUNCTION_DECL means this function should be treated
3019 as "novops" function (function that does not read global memory,
3020 but may have arbitrary side effects). */
3021#define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3022
3023/* Used in FUNCTION_DECLs to indicate that they should be run automatically
3024 at the beginning or end of execution. */
3025#define DECL_STATIC_CONSTRUCTOR(NODE) \
3026 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3027
3028#define DECL_STATIC_DESTRUCTOR(NODE) \
3029(FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3030
3031/* Used in FUNCTION_DECLs to indicate that function entry and exit should
3032 be instrumented with calls to support routines. */
3033#define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3034 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3035
3036/* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3037 disabled in this function. */
3038#define DECL_NO_LIMIT_STACK(NODE) \
3039 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3040
3041/* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3042 static chain is not needed. */
3043#define DECL_NO_STATIC_CHAIN(NODE) \
3044 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3045
3046/* Nonzero for a decl that cgraph has decided should be inlined into
3047 at least one call site. It is not meaningful to look at this
3048 directly; always use cgraph_function_possibly_inlined_p. */
3049#define DECL_POSSIBLY_INLINED(DECL) \
3050 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3051
3052/* Nonzero in a FUNCTION_DECL means this function can be substituted
3053 where it is called. */
3054#define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.inline_flag)
3055
3056/* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3057 such as via the `inline' keyword in C/C++. This flag controls the linkage
3058 semantics of 'inline'; whether or not the function is inlined is
3059 controlled by DECL_INLINE. */
3060#define DECL_DECLARED_INLINE_P(NODE) \
3061 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3062
3063/* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3064 that describes the status of this function. */
3065#define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3066
3067/* In a FUNCTION_DECL, nonzero means a built in function. */
3068#define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3069
3070/* For a builtin function, identify which part of the compiler defined it. */
3071#define DECL_BUILT_IN_CLASS(NODE) \
3072 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3073
3074/* In FUNCTION_DECL, a chain of ..._DECL nodes.
3075 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3076 uses. */
3077#define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3078#define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3079
3080/* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3081 arguments/result/saved_tree fields by front ends. It was either inherit
3082 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3083 which seemed a bit strange. */
3084
3085struct tree_function_decl GTY(())
3086{
3087 struct tree_decl_non_common common;
3088
3089 unsigned static_ctor_flag : 1;
3090 unsigned static_dtor_flag : 1;
3091 unsigned uninlinable : 1;
3092 unsigned possibly_inlined : 1;
3093 unsigned novops_flag : 1;
3094 unsigned returns_twice_flag : 1;
3095 unsigned malloc_flag : 1;
3096 unsigned pure_flag : 1;
3097
3098 unsigned declared_inline_flag : 1;
3099 unsigned regdecl_flag : 1;
3100 unsigned inline_flag : 1;
3101 unsigned no_instrument_function_entry_exit : 1;
3102 unsigned no_limit_stack : 1;
3103 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3104
3105 struct function *f;
3106};
3107
3108/* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3109#define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3110
3111/* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3112 into stabs. Instead it will generate cross reference ('x') of names.
3113 This uses the same flag as DECL_EXTERNAL. */
3114#define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3115 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_2)
3116
3117struct tree_type_decl GTY(())
3118{
3119 struct tree_decl_non_common common;
3120
3121};
3122
3123/* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3124 To reduce overhead, the nodes containing the statements are not trees.
3125 This avoids the overhead of tree_common on all linked list elements.
3126
3127 Use the interface in tree-iterator.h to access this node. */
3128
3129#define STATEMENT_LIST_HEAD(NODE) \
3130 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3131#define STATEMENT_LIST_TAIL(NODE) \
3132 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3133
3134struct tree_statement_list_node
3135 GTY ((chain_next ("%h.next"), chain_prev ("%h.prev")))
3136{
3137 struct tree_statement_list_node *prev;
3138 struct tree_statement_list_node *next;
3139 tree stmt;
3140};
3141
3142struct tree_statement_list
3143 GTY(())
3144{
3145 struct tree_common common;
3146 struct tree_statement_list_node *head;
3147 struct tree_statement_list_node *tail;
3148};
3149
3150#define VALUE_HANDLE_ID(NODE) \
3151 (VALUE_HANDLE_CHECK (NODE)->value_handle.id)
3152
3153#define VALUE_HANDLE_EXPR_SET(NODE) \
3154 (VALUE_HANDLE_CHECK (NODE)->value_handle.expr_set)
3155
3156#define VALUE_HANDLE_VUSES(NODE) \
3157 (VALUE_HANDLE_CHECK (NODE)->value_handle.vuses)
3158
3159/* Defined and used in tree-ssa-pre.c. */
3160struct value_set;
3161
3162struct tree_value_handle GTY(())
3163{
3164 struct tree_common common;
3165
3166 /* The set of expressions represented by this handle. */
3167 struct value_set * GTY ((skip)) expr_set;
3168
3169 /* Unique ID for this value handle. IDs are handed out in a
3170 conveniently dense form starting at 0, so that we can make
3171 bitmaps of value handles. */
3172 unsigned int id;
3173
3174 /* Set of virtual uses represented by this handle. */
3175 VEC (tree, gc) *vuses;
3176};
3177
3178/* Define the overall contents of a tree node.
3179 It may be any of the structures declared above
3180 for various types of node. */
3181
3182union tree_node GTY ((ptr_alias (union lang_tree_node),
3183 desc ("tree_node_structure (&%h)")))
3184{
3185 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3186 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3187 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3188 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3189 struct tree_string GTY ((tag ("TS_STRING"))) string;
3190 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3191 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3192 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3193 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3194 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3195 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3196 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3197 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3198 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3199 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3200 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3201 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3202 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3203 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3204 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3205 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3206 struct tree_list GTY ((tag ("TS_LIST"))) list;
3207 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3208 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3209 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3210 struct tree_phi_node GTY ((tag ("TS_PHI_NODE"))) phi;
3211 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3212 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3213 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3214 struct tree_value_handle GTY ((tag ("TS_VALUE_HANDLE"))) value_handle;
3215 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3216 struct tree_memory_tag GTY ((tag ("TS_MEMORY_TAG"))) mtag;
3217 struct tree_struct_field_tag GTY ((tag ("TS_STRUCT_FIELD_TAG"))) sft;
3218 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3219};
3220
3221/* Standard named or nameless data types of the C compiler. */
3222
3223enum tree_index
3224{
3225 TI_ERROR_MARK,
3226 TI_INTQI_TYPE,
3227 TI_INTHI_TYPE,
3228 TI_INTSI_TYPE,
3229 TI_INTDI_TYPE,
3230 TI_INTTI_TYPE,
3231
3232 TI_UINTQI_TYPE,
3233 TI_UINTHI_TYPE,
3234 TI_UINTSI_TYPE,
3235 TI_UINTDI_TYPE,
3236 TI_UINTTI_TYPE,
3237
3238 TI_INTEGER_ZERO,
3239 TI_INTEGER_ONE,
3240 TI_INTEGER_MINUS_ONE,
3241 TI_NULL_POINTER,
3242
3243 TI_SIZE_ZERO,
3244 TI_SIZE_ONE,
3245
3246 TI_BITSIZE_ZERO,
3247 TI_BITSIZE_ONE,
3248 TI_BITSIZE_UNIT,
3249
3250 TI_PUBLIC,
3251 TI_PROTECTED,
3252 TI_PRIVATE,
3253
3254 TI_BOOLEAN_FALSE,
3255 TI_BOOLEAN_TRUE,
3256
3257 TI_COMPLEX_INTEGER_TYPE,
3258 TI_COMPLEX_FLOAT_TYPE,
3259 TI_COMPLEX_DOUBLE_TYPE,
3260 TI_COMPLEX_LONG_DOUBLE_TYPE,
3261
3262 TI_FLOAT_TYPE,
3263 TI_DOUBLE_TYPE,
3264 TI_LONG_DOUBLE_TYPE,
3265
3266 TI_FLOAT_PTR_TYPE,
3267 TI_DOUBLE_PTR_TYPE,
3268 TI_LONG_DOUBLE_PTR_TYPE,
3269 TI_INTEGER_PTR_TYPE,
3270
3271 TI_VOID_TYPE,
3272 TI_PTR_TYPE,
3273 TI_CONST_PTR_TYPE,
3274 TI_SIZE_TYPE,
3275 TI_PID_TYPE,
3276 TI_PTRDIFF_TYPE,
3277 TI_VA_LIST_TYPE,
3278 TI_VA_LIST_GPR_COUNTER_FIELD,
3279 TI_VA_LIST_FPR_COUNTER_FIELD,
3280 TI_BOOLEAN_TYPE,
3281 TI_FILEPTR_TYPE,
3282
3283 TI_DFLOAT32_TYPE,
3284 TI_DFLOAT64_TYPE,
3285 TI_DFLOAT128_TYPE,
3286 TI_DFLOAT32_PTR_TYPE,
3287 TI_DFLOAT64_PTR_TYPE,
3288 TI_DFLOAT128_PTR_TYPE,
3289
3290 TI_VOID_LIST_NODE,
3291
3292 TI_MAIN_IDENTIFIER,
3293
3294 TI_MAX
3295};
3296
3297extern GTY(()) tree global_trees[TI_MAX];
3298
3299#define error_mark_node global_trees[TI_ERROR_MARK]
3300
3301#define intQI_type_node global_trees[TI_INTQI_TYPE]
3302#define intHI_type_node global_trees[TI_INTHI_TYPE]
3303#define intSI_type_node global_trees[TI_INTSI_TYPE]
3304#define intDI_type_node global_trees[TI_INTDI_TYPE]
3305#define intTI_type_node global_trees[TI_INTTI_TYPE]
3306
3307#define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3308#define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3309#define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3310#define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3311#define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3312
3313#define integer_zero_node global_trees[TI_INTEGER_ZERO]
3314#define integer_one_node global_trees[TI_INTEGER_ONE]
3315#define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3316#define size_zero_node global_trees[TI_SIZE_ZERO]
3317#define size_one_node global_trees[TI_SIZE_ONE]
3318#define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3319#define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3320#define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3321
3322/* Base access nodes. */
3323#define access_public_node global_trees[TI_PUBLIC]
3324#define access_protected_node global_trees[TI_PROTECTED]
3325#define access_private_node global_trees[TI_PRIVATE]
3326
3327#define null_pointer_node global_trees[TI_NULL_POINTER]
3328
3329#define float_type_node global_trees[TI_FLOAT_TYPE]
3330#define double_type_node global_trees[TI_DOUBLE_TYPE]
3331#define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3332
3333#define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3334#define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3335#define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3336#define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3337
3338#define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3339#define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3340#define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3341#define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3342
3343#define void_type_node global_trees[TI_VOID_TYPE]
3344/* The C type `void *'. */
3345#define ptr_type_node global_trees[TI_PTR_TYPE]
3346/* The C type `const void *'. */
3347#define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3348/* The C type `size_t'. */
3349#define size_type_node global_trees[TI_SIZE_TYPE]
3350#define pid_type_node global_trees[TI_PID_TYPE]
3351#define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3352#define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3353#define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3354#define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3355/* The C type `FILE *'. */
3356#define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3357
3358#define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
3359#define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
3360#define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
3361
3362/* The decimal floating point types. */
3363#define dfloat32_type_node global_trees[TI_DFLOAT32_TYPE]
3364#define dfloat64_type_node global_trees[TI_DFLOAT64_TYPE]
3365#define dfloat128_type_node global_trees[TI_DFLOAT128_TYPE]
3366#define dfloat32_ptr_type_node global_trees[TI_DFLOAT32_PTR_TYPE]
3367#define dfloat64_ptr_type_node global_trees[TI_DFLOAT64_PTR_TYPE]
3368#define dfloat128_ptr_type_node global_trees[TI_DFLOAT128_PTR_TYPE]
3369
3370/* The node that should be placed at the end of a parameter list to
3371 indicate that the function does not take a variable number of
3372 arguments. The TREE_VALUE will be void_type_node and there will be
3373 no TREE_CHAIN. Language-independent code should not assume
3374 anything else about this node. */
3375#define void_list_node global_trees[TI_VOID_LIST_NODE]
3376
3377#define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
3378#define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
3379
3380/* An enumeration of the standard C integer types. These must be
3381 ordered so that shorter types appear before longer ones, and so
3382 that signed types appear before unsigned ones, for the correct
3383 functioning of interpret_integer() in c-lex.c. */
3384enum integer_type_kind
3385{
3386 itk_char,
3387 itk_signed_char,
3388 itk_unsigned_char,
3389 itk_short,
3390 itk_unsigned_short,
3391 itk_int,
3392 itk_unsigned_int,
3393 itk_long,
3394 itk_unsigned_long,
3395 itk_long_long,
3396 itk_unsigned_long_long,
3397 itk_none
3398};
3399
3400typedef enum integer_type_kind integer_type_kind;
3401
3402/* The standard C integer types. Use integer_type_kind to index into
3403 this array. */
3404extern GTY(()) tree integer_types[itk_none];
3405
3406#define char_type_node integer_types[itk_char]
3407#define signed_char_type_node integer_types[itk_signed_char]
3408#define unsigned_char_type_node integer_types[itk_unsigned_char]
3409#define short_integer_type_node integer_types[itk_short]
3410#define short_unsigned_type_node integer_types[itk_unsigned_short]
3411#define integer_type_node integer_types[itk_int]
3412#define unsigned_type_node integer_types[itk_unsigned_int]
3413#define long_integer_type_node integer_types[itk_long]
3414#define long_unsigned_type_node integer_types[itk_unsigned_long]
3415#define long_long_integer_type_node integer_types[itk_long_long]
3416#define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
3417
3418/* Set to the default thread-local storage (tls) model to use. */
3419
3420extern enum tls_model flag_tls_default;
3421
3422
3423/* A pointer-to-function member type looks like:
3424
3425 struct {
3426 __P __pfn;
3427 ptrdiff_t __delta;
3428 };
3429
3430 If __pfn is NULL, it is a NULL pointer-to-member-function.
3431
3432 (Because the vtable is always the first thing in the object, we
3433 don't need its offset.) If the function is virtual, then PFN is
3434 one plus twice the index into the vtable; otherwise, it is just a
3435 pointer to the function.
3436
3437 Unfortunately, using the lowest bit of PFN doesn't work in
3438 architectures that don't impose alignment requirements on function
3439 addresses, or that use the lowest bit to tell one ISA from another,
3440 for example. For such architectures, we use the lowest bit of
3441 DELTA instead of the lowest bit of the PFN, and DELTA will be
3442 multiplied by 2. */
3443
3444enum ptrmemfunc_vbit_where_t
3445{
3446 ptrmemfunc_vbit_in_pfn,
3447 ptrmemfunc_vbit_in_delta
3448};
3449
3450#define NULL_TREE (tree) NULL
3451
3452extern tree decl_assembler_name (tree);
3453
3454/* Compute the number of bytes occupied by 'node'. This routine only
3455 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
3456
3457extern size_t tree_size (tree);
3458
3459/* Compute the number of bytes occupied by a tree with code CODE. This
3460 function cannot be used for TREE_VEC or PHI_NODE codes, which are of
3461 variable length. */
3462extern size_t tree_code_size (enum tree_code);
3463
3464/* Lowest level primitive for allocating a node.
3465 The TREE_CODE is the only argument. Contents are initialized
3466 to zero except for a few of the common fields. */
3467
3468extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
3469#define make_node(t) make_node_stat (t MEM_STAT_INFO)
3470
3471/* Make a copy of a node, with all the same contents. */
3472
3473extern tree copy_node_stat (tree MEM_STAT_DECL);
3474#define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
3475
3476/* Make a copy of a chain of TREE_LIST nodes. */
3477
3478extern tree copy_list (tree);
3479
3480/* Make a BINFO. */
3481extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
3482#define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
3483
3484/* Make a TREE_VEC. */
3485
3486extern tree make_tree_vec_stat (int MEM_STAT_DECL);
3487#define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
3488
3489/* Tree nodes for SSA analysis. */
3490
3491extern void init_phinodes (void);
3492extern void fini_phinodes (void);
3493extern void release_phi_node (tree);
3494#ifdef GATHER_STATISTICS
3495extern void phinodes_print_statistics (void);
3496#endif
3497
3498extern void init_ssanames (void);
3499extern void fini_ssanames (void);
3500extern tree make_ssa_name (tree, tree);
3501extern tree duplicate_ssa_name (tree, tree);
3502extern void duplicate_ssa_name_ptr_info (tree, struct ptr_info_def *);
3503extern void release_ssa_name (tree);
3504extern void release_defs (tree);
3505extern void replace_ssa_name_symbol (tree, tree);
3506
3507#ifdef GATHER_STATISTICS
3508extern void ssanames_print_statistics (void);
3509#endif
3510
3511/* Return the (unique) IDENTIFIER_NODE node for a given name.
3512 The name is supplied as a char *. */
3513
3514extern tree get_identifier (const char *);
3515
3516#if GCC_VERSION >= 3000
3517#define get_identifier(str) \
3518 (__builtin_constant_p (str) \
3519 ? get_identifier_with_length ((str), strlen (str)) \
3520 : get_identifier (str))
3521#endif
3522
3523
3524/* Identical to get_identifier, except that the length is assumed
3525 known. */
3526
3527extern tree get_identifier_with_length (const char *, size_t);
3528
3529/* If an identifier with the name TEXT (a null-terminated string) has
3530 previously been referred to, return that node; otherwise return
3531 NULL_TREE. */
3532
3533extern tree maybe_get_identifier (const char *);
3534
3535/* Construct various types of nodes. */
3536
3537extern tree build_nt (enum tree_code, ...);
3538
3539extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
3540#define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
3541extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3542#define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
3543extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
3544#define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
3545extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
3546#define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
3547extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
3548 tree MEM_STAT_DECL);
3549#define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
3550extern tree build5_stat (enum tree_code, tree, tree, tree, tree, tree,
3551 tree MEM_STAT_DECL);
3552#define build5(c,t1,t2,t3,t4,t5,t6) build5_stat (c,t1,t2,t3,t4,t5,t6 MEM_STAT_INFO)
3553extern tree build7_stat (enum tree_code, tree, tree, tree, tree, tree,
3554 tree, tree, tree MEM_STAT_DECL);
3555#define build7(c,t1,t2,t3,t4,t5,t6,t7,t8) \
3556 build7_stat (c,t1,t2,t3,t4,t5,t6,t7,t8 MEM_STAT_INFO)
3557
3558extern tree build_int_cst (tree, HOST_WIDE_INT);
3559extern tree build_int_cst_type (tree, HOST_WIDE_INT);
3560extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
3561extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3562extern tree build_vector (tree, tree);
3563extern tree build_vector_from_ctor (tree, VEC(constructor_elt,gc) *);
3564extern tree build_constructor (tree, VEC(constructor_elt,gc) *);
3565extern tree build_constructor_single (tree, tree, tree);
3566extern tree build_constructor_from_list (tree, tree);
3567extern tree build_real_from_int_cst (tree, tree);
3568extern tree build_complex (tree, tree, tree);
3569extern tree build_one_cst (tree);
3570extern tree build_string (int, const char *);
3571extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
3572#define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
3573extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3574extern tree build_fn_decl (const char *, tree);
3575#define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
3576extern tree build_block (tree, tree, tree, tree);
3577#ifndef USE_MAPPED_LOCATION
3578extern void annotate_with_file_line (tree, const char *, int);
3579extern void annotate_with_locus (tree, location_t);
3580#endif
3581extern tree build_empty_stmt (void);
3582extern tree build_omp_clause (enum omp_clause_code);
3583
3584/* Construct various nodes representing data types. */
3585
3586extern tree make_signed_type (int);
3587extern tree make_unsigned_type (int);
3588extern tree signed_type_for (tree);
3589extern tree unsigned_type_for (tree);
3590extern void initialize_sizetypes (bool);
3591extern void set_sizetype (tree);
3592extern void fixup_unsigned_type (tree);
3593extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
3594extern tree build_pointer_type (tree);
3595extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
3596extern tree build_reference_type (tree);
3597extern tree build_vector_type_for_mode (tree, enum machine_mode);
3598extern tree build_vector_type (tree innertype, int nunits);
3599extern tree build_type_no_quals (tree);
3600extern tree build_index_type (tree);
3601extern tree build_index_2_type (tree, tree);
3602extern tree build_array_type (tree, tree);
3603extern tree build_function_type (tree, tree);
3604extern tree build_function_type_list (tree, ...);
3605extern tree build_method_type_directly (tree, tree, tree);
3606extern tree build_method_type (tree, tree);
3607extern tree build_offset_type (tree, tree);
3608extern tree build_complex_type (tree);
3609extern tree build_resx (int);
3610extern tree array_type_nelts (tree);
3611extern bool in_array_bounds_p (tree);
3612extern bool range_in_array_bounds_p (tree);
3613
3614extern tree value_member (tree, tree);
3615extern tree purpose_member (tree, tree);
3616
3617extern int attribute_list_equal (tree, tree);
3618extern int attribute_list_contained (tree, tree);
3619extern int tree_int_cst_equal (tree, tree);
3620extern int tree_int_cst_lt (tree, tree);
3621extern int tree_int_cst_compare (tree, tree);
3622extern int host_integerp (tree, int);
3623extern HOST_WIDE_INT tree_low_cst (tree, int);
3624extern int tree_int_cst_msb (tree);
3625extern int tree_int_cst_sgn (tree);
3626extern int tree_int_cst_sign_bit (tree);
3627extern int tree_expr_nonnegative_p (tree);
3628extern int tree_expr_nonnegative_warnv_p (tree, bool *);
3629extern bool may_negate_without_overflow_p (tree);
3630extern tree get_inner_array_type (tree);
3631
3632/* From expmed.c. Since rtl.h is included after tree.h, we can't
3633 put the prototype here. Rtl.h does declare the prototype if
3634 tree.h had been included. */
3635
3636extern tree make_tree (tree, rtx);
3637
3638/* Return a type like TTYPE except that its TYPE_ATTRIBUTES
3639 is ATTRIBUTE.
3640
3641 Such modified types already made are recorded so that duplicates
3642 are not made. */
3643
3644extern tree build_type_attribute_variant (tree, tree);
3645extern tree build_decl_attribute_variant (tree, tree);
3646
3647/* Structure describing an attribute and a function to handle it. */
3648struct attribute_spec
3649{
3650 /* The name of the attribute (without any leading or trailing __),
3651 or NULL to mark the end of a table of attributes. */
3652 const char *const name;
3653 /* The minimum length of the list of arguments of the attribute. */
3654 const int min_length;
3655 /* The maximum length of the list of arguments of the attribute
3656 (-1 for no maximum). */
3657 const int max_length;
3658 /* Whether this attribute requires a DECL. If it does, it will be passed
3659 from types of DECLs, function return types and array element types to
3660 the DECLs, function types and array types respectively; but when
3661 applied to a type in any other circumstances, it will be ignored with
3662 a warning. (If greater control is desired for a given attribute,
3663 this should be false, and the flags argument to the handler may be
3664 used to gain greater control in that case.) */
3665 const bool decl_required;
3666 /* Whether this attribute requires a type. If it does, it will be passed
3667 from a DECL to the type of that DECL. */
3668 const bool type_required;
3669 /* Whether this attribute requires a function (or method) type. If it does,
3670 it will be passed from a function pointer type to the target type,
3671 and from a function return type (which is not itself a function
3672 pointer type) to the function type. */
3673 const bool function_type_required;
3674 /* Function to handle this attribute. NODE points to the node to which
3675 the attribute is to be applied. If a DECL, it should be modified in
3676 place; if a TYPE, a copy should be created. NAME is the name of the
3677 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
3678 of the arguments (which may be NULL). FLAGS gives further information
3679 about the context of the attribute. Afterwards, the attributes will
3680 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
3681 unless *NO_ADD_ATTRS is set to true (which should be done on error,
3682 as well as in any other cases when the attributes should not be added
3683 to the DECL or TYPE). Depending on FLAGS, any attributes to be
3684 applied to another type or DECL later may be returned;
3685 otherwise the return value should be NULL_TREE. This pointer may be
3686 NULL if no special handling is required beyond the checks implied
3687 by the rest of this structure. */
3688 tree (*const handler) (tree *node, tree name, tree args,
3689 int flags, bool *no_add_attrs);
3690};
3691
3692/* Flags that may be passed in the third argument of decl_attributes, and
3693 to handler functions for attributes. */
3694enum attribute_flags
3695{
3696 /* The type passed in is the type of a DECL, and any attributes that
3697 should be passed in again to be applied to the DECL rather than the
3698 type should be returned. */
3699 ATTR_FLAG_DECL_NEXT = 1,
3700 /* The type passed in is a function return type, and any attributes that
3701 should be passed in again to be applied to the function type rather
3702 than the return type should be returned. */
3703 ATTR_FLAG_FUNCTION_NEXT = 2,
3704 /* The type passed in is an array element type, and any attributes that
3705 should be passed in again to be applied to the array type rather
3706 than the element type should be returned. */
3707 ATTR_FLAG_ARRAY_NEXT = 4,
3708 /* The type passed in is a structure, union or enumeration type being
3709 created, and should be modified in place. */
3710 ATTR_FLAG_TYPE_IN_PLACE = 8,
3711 /* The attributes are being applied by default to a library function whose
3712 name indicates known behavior, and should be silently ignored if they
3713 are not in fact compatible with the function type. */
3714 ATTR_FLAG_BUILT_IN = 16
3715};
3716
3717/* Default versions of target-overridable functions. */
3718
3719extern tree merge_decl_attributes (tree, tree);
3720extern tree merge_type_attributes (tree, tree);
3721
3722/* Given a tree node and a string, return nonzero if the tree node is
3723 a valid attribute name for the string. */
3724
3725extern int is_attribute_p (const char *, tree);
3726
3727/* Given an attribute name and a list of attributes, return the list element
3728 of the attribute or NULL_TREE if not found. */
3729
3730extern tree lookup_attribute (const char *, tree);
3731
3732/* Remove any instances of attribute ATTR_NAME in LIST and return the
3733 modified list. */
3734
3735extern tree remove_attribute (const char *, tree);
3736
3737/* Given two attributes lists, return a list of their union. */
3738
3739extern tree merge_attributes (tree, tree);
3740
3741#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
3742/* Given two Windows decl attributes lists, possibly including
3743 dllimport, return a list of their union . */
3744extern tree merge_dllimport_decl_attributes (tree, tree);
3745
3746/* Handle a "dllimport" or "dllexport" attribute. */
3747extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
3748#endif
3749
3750/* Check whether CAND is suitable to be returned from get_qualified_type
3751 (BASE, TYPE_QUALS). */
3752
3753extern bool check_qualified_type (tree, tree, int);
3754
3755/* Return a version of the TYPE, qualified as indicated by the
3756 TYPE_QUALS, if one exists. If no qualified version exists yet,
3757 return NULL_TREE. */
3758
3759extern tree get_qualified_type (tree, int);
3760
3761/* Like get_qualified_type, but creates the type if it does not
3762 exist. This function never returns NULL_TREE. */
3763
3764extern tree build_qualified_type (tree, int);
3765
3766/* Like build_qualified_type, but only deals with the `const' and
3767 `volatile' qualifiers. This interface is retained for backwards
3768 compatibility with the various front-ends; new code should use
3769 build_qualified_type instead. */
3770
3771#define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
3772 build_qualified_type ((TYPE), \
3773 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
3774 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
3775
3776/* Make a copy of a type node. */
3777
3778extern tree build_distinct_type_copy (tree);
3779extern tree build_variant_type_copy (tree);
3780
3781/* Finish up a builtin RECORD_TYPE. Give it a name and provide its
3782 fields. Optionally specify an alignment, and then lay it out. */
3783
3784extern void finish_builtin_struct (tree, const char *,
3785 tree, tree);
3786
3787/* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
3788 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
3789 node, does nothing except for the first time. */
3790
3791extern void layout_type (tree);
3792
3793/* These functions allow a front-end to perform a manual layout of a
3794 RECORD_TYPE. (For instance, if the placement of subsequent fields
3795 depends on the placement of fields so far.) Begin by calling
3796 start_record_layout. Then, call place_field for each of the
3797 fields. Then, call finish_record_layout. See layout_type for the
3798 default way in which these functions are used. */
3799
3800typedef struct record_layout_info_s
3801{
3802 /* The RECORD_TYPE that we are laying out. */
3803 tree t;
3804 /* The offset into the record so far, in bytes, not including bits in
3805 BITPOS. */
3806 tree offset;
3807 /* The last known alignment of SIZE. */
3808 unsigned int offset_align;
3809 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
3810 tree bitpos;
3811 /* The alignment of the record so far, in bits. */
3812 unsigned int record_align;
3813 /* The alignment of the record so far, ignoring #pragma pack and
3814 __attribute__ ((packed)), in bits. */
3815 unsigned int unpacked_align;
3816 /* The previous field layed out. */
3817 tree prev_field;
3818 /* The static variables (i.e., class variables, as opposed to
3819 instance variables) encountered in T. */
3820 tree pending_statics;
3821 /* Bits remaining in the current alignment group */
3822 int remaining_in_alignment;
3823 /* True if we've seen a packed field that didn't have normal
3824 alignment anyway. */
3825 int packed_maybe_necessary;
3826} *record_layout_info;
3827
3828extern void set_lang_adjust_rli (void (*) (record_layout_info));
3829extern record_layout_info start_record_layout (tree);
3830extern tree bit_from_pos (tree, tree);
3831extern tree byte_from_pos (tree, tree);
3832extern void pos_from_bit (tree *, tree *, unsigned int, tree);
3833extern void normalize_offset (tree *, tree *, unsigned int);
3834extern tree rli_size_unit_so_far (record_layout_info);
3835extern tree rli_size_so_far (record_layout_info);
3836extern void normalize_rli (record_layout_info);
3837extern void place_field (record_layout_info, tree);
3838extern void compute_record_mode (tree);
3839extern void finish_record_layout (record_layout_info, int);
3840
3841/* Given a hashcode and a ..._TYPE node (for which the hashcode was made),
3842 return a canonicalized ..._TYPE node, so that duplicates are not made.
3843 How the hash code is computed is up to the caller, as long as any two
3844 callers that could hash identical-looking type nodes agree. */
3845
3846extern tree type_hash_canon (unsigned int, tree);
3847
3848/* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node,
3849 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE
3850 fields. Call this only once for any given decl node.
3851
3852 Second argument is the boundary that this field can be assumed to
3853 be starting at (in bits). Zero means it can be assumed aligned
3854 on any boundary that may be needed. */
3855
3856extern void layout_decl (tree, unsigned);
3857
3858/* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
3859 a previous call to layout_decl and calls it again. */
3860
3861extern void relayout_decl (tree);
3862
3863/* Return the mode for data of a given size SIZE and mode class CLASS.
3864 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
3865 The value is BLKmode if no other mode is found. This is like
3866 mode_for_size, but is passed a tree. */
3867
3868extern enum machine_mode mode_for_size_tree (tree, enum mode_class, int);
3869
3870/* Return an expr equal to X but certainly not valid as an lvalue. */
3871
3872extern tree non_lvalue (tree);
3873
3874extern tree convert (tree, tree);
3875extern unsigned int expr_align (tree);
3876extern tree expr_first (tree);
3877extern tree expr_last (tree);
3878extern tree expr_only (tree);
3879extern tree size_in_bytes (tree);
3880extern HOST_WIDE_INT int_size_in_bytes (tree);
3881extern HOST_WIDE_INT max_int_size_in_bytes (tree);
3882extern tree bit_position (tree);
3883extern HOST_WIDE_INT int_bit_position (tree);
3884extern tree byte_position (tree);
3885extern HOST_WIDE_INT int_byte_position (tree);
3886
3887/* Define data structures, macros, and functions for handling sizes
3888 and the various types used to represent sizes. */
3889
3890enum size_type_kind
3891{
3892 SIZETYPE, /* Normal representation of sizes in bytes. */
3893 SSIZETYPE, /* Signed representation of sizes in bytes. */
3894 BITSIZETYPE, /* Normal representation of sizes in bits. */
3895 SBITSIZETYPE, /* Signed representation of sizes in bits. */
3896 TYPE_KIND_LAST};
3897
3898extern GTY(()) tree sizetype_tab[(int) TYPE_KIND_LAST];
3899
3900#define sizetype sizetype_tab[(int) SIZETYPE]
3901#define bitsizetype sizetype_tab[(int) BITSIZETYPE]
3902#define ssizetype sizetype_tab[(int) SSIZETYPE]
3903#define sbitsizetype sizetype_tab[(int) SBITSIZETYPE]
3904
3905extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
3906extern tree size_binop (enum tree_code, tree, tree);
3907extern tree size_diffop (tree, tree);
3908
3909#define size_int(L) size_int_kind (L, SIZETYPE)
3910#define ssize_int(L) size_int_kind (L, SSIZETYPE)
3911#define bitsize_int(L) size_int_kind (L, BITSIZETYPE)
3912#define sbitsize_int(L) size_int_kind (L, SBITSIZETYPE)
3913
3914extern tree round_up (tree, int);
3915extern tree round_down (tree, int);
3916extern tree get_pending_sizes (void);
3917extern void put_pending_size (tree);
3918extern void put_pending_sizes (tree);
3919
3920/* Type for sizes of data-type. */
3921
3922#define BITS_PER_UNIT_LOG \
3923 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \
3924 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
3925 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
3926
3927/* If nonzero, an upper limit on alignment of structure fields, in bits, */
3928extern unsigned int maximum_field_alignment;
3929/* and its original value in bytes, specified via -fpack-struct=<value>. */
3930extern unsigned int initial_max_fld_align;
3931
3932/* Concatenate two lists (chains of TREE_LIST nodes) X and Y
3933 by making the last node in X point to Y.
3934 Returns X, except if X is 0 returns Y. */
3935
3936extern tree chainon (tree, tree);
3937
3938/* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
3939
3940extern tree tree_cons_stat (tree, tree, tree MEM_STAT_DECL);
3941#define tree_cons(t,q,w) tree_cons_stat (t,q,w MEM_STAT_INFO)
3942
3943/* Return the last tree node in a chain. */
3944
3945extern tree tree_last (tree);
3946
3947/* Reverse the order of elements in a chain, and return the new head. */
3948
3949extern tree nreverse (tree);
3950
3951/* Returns the length of a chain of nodes
3952 (number of chain pointers to follow before reaching a null pointer). */
3953
3954extern int list_length (tree);
3955
3956/* Returns the number of FIELD_DECLs in a type. */
3957
3958extern int fields_length (tree);
3959
3960/* Given an initializer INIT, return TRUE if INIT is zero or some
3961 aggregate of zeros. Otherwise return FALSE. */
3962
3963extern bool initializer_zerop (tree);
3964
3965/* Examine CTOR to discover:
3966 * how many scalar fields are set to nonzero values,
3967 and place it in *P_NZ_ELTS;
3968 * how many scalar fields in total are in CTOR,
3969 and place it in *P_ELT_COUNT.
3970 * if a type is a union, and the initializer from the constructor
3971 is not the largest element in the union, then set *p_must_clear.
3972
3973 Return whether or not CTOR is a valid static constant initializer, the same
3974 as "initializer_constant_valid_p (CTOR, TREE_TYPE (CTOR)) != 0". */
3975
3976extern bool categorize_ctor_elements (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
3977 bool *);
3978
3979extern HOST_WIDE_INT count_type_elements (tree, bool);
3980
3981/* integer_zerop (tree x) is nonzero if X is an integer constant of value 0. */
3982
3983extern int integer_zerop (tree);
3984
3985/* integer_onep (tree x) is nonzero if X is an integer constant of value 1. */
3986
3987extern int integer_onep (tree);
3988
3989/* integer_all_onesp (tree x) is nonzero if X is an integer constant
3990 all of whose significant bits are 1. */
3991
3992extern int integer_all_onesp (tree);
3993
3994/* integer_pow2p (tree x) is nonzero is X is an integer constant with
3995 exactly one bit 1. */
3996
3997extern int integer_pow2p (tree);
3998
3999/* integer_nonzerop (tree x) is nonzero if X is an integer constant
4000 with a nonzero value. */
4001
4002extern int integer_nonzerop (tree);
4003
4004extern bool zero_p (tree);
4005extern bool cst_and_fits_in_hwi (tree);
4006extern tree num_ending_zeros (tree);
4007
4008/* staticp (tree x) is nonzero if X is a reference to data allocated
4009 at a fixed address in memory. Returns the outermost data. */
4010
4011extern tree staticp (tree);
4012
4013/* save_expr (EXP) returns an expression equivalent to EXP
4014 but it can be used multiple times within context CTX
4015 and only evaluate EXP once. */
4016
4017extern tree save_expr (tree);
4018
4019/* Look inside EXPR and into any simple arithmetic operations. Return
4020 the innermost non-arithmetic node. */
4021
4022extern tree skip_simple_arithmetic (tree);
4023
4024/* Return which tree structure is used by T. */
4025
4026enum tree_node_structure_enum tree_node_structure (tree);
4027
4028/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
4029 or offset that depends on a field within a record.
4030
4031 Note that we only allow such expressions within simple arithmetic
4032 or a COND_EXPR. */
4033
4034extern bool contains_placeholder_p (tree);
4035
4036/* This macro calls the above function but short-circuits the common
4037 case of a constant to save time. Also check for null. */
4038
4039#define CONTAINS_PLACEHOLDER_P(EXP) \
4040 ((EXP) != 0 && ! TREE_CONSTANT (EXP) && contains_placeholder_p (EXP))
4041
4042/* Return 1 if any part of the computation of TYPE involves a PLACEHOLDER_EXPR.
4043 This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and field
4044 positions. */
4045
4046extern bool type_contains_placeholder_p (tree);
4047
4048/* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
4049 return a tree with all occurrences of references to F in a
4050 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP
4051 contains only arithmetic expressions. */
4052
4053extern tree substitute_in_expr (tree, tree, tree);
4054
4055/* This macro calls the above function but short-circuits the common
4056 case of a constant to save time and also checks for NULL. */
4057
4058#define SUBSTITUTE_IN_EXPR(EXP, F, R) \
4059 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) : substitute_in_expr (EXP, F, R))
4060
4061/* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
4062 for it within OBJ, a tree that is an object or a chain of references. */
4063
4064extern tree substitute_placeholder_in_expr (tree, tree);
4065
4066/* This macro calls the above function but short-circuits the common
4067 case of a constant to save time and also checks for NULL. */
4068
4069#define SUBSTITUTE_PLACEHOLDER_IN_EXPR(EXP, OBJ) \
4070 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) \
4071 : substitute_placeholder_in_expr (EXP, OBJ))
4072
4073/* variable_size (EXP) is like save_expr (EXP) except that it
4074 is for the special case of something that is part of a
4075 variable size for a data type. It makes special arrangements
4076 to compute the value at the right time when the data type
4077 belongs to a function parameter. */
4078
4079extern tree variable_size (tree);
4080
4081/* stabilize_reference (EXP) returns a reference equivalent to EXP
4082 but it can be used multiple times
4083 and only evaluate the subexpressions once. */
4084
4085extern tree stabilize_reference (tree);
4086
4087/* Subroutine of stabilize_reference; this is called for subtrees of
4088 references. Any expression with side-effects must be put in a SAVE_EXPR
4089 to ensure that it is only evaluated once. */
4090
4091extern tree stabilize_reference_1 (tree);
4092
4093/* Return EXP, stripped of any conversions to wider types
4094 in such a way that the result of converting to type FOR_TYPE
4095 is the same as if EXP were converted to FOR_TYPE.
4096 If FOR_TYPE is 0, it signifies EXP's type. */
4097
4098extern tree get_unwidened (tree, tree);
4099
4100/* Return OP or a simpler expression for a narrower value
4101 which can be sign-extended or zero-extended to give back OP.
4102 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
4103 or 0 if the value should be sign-extended. */
4104
4105extern tree get_narrower (tree, int *);
4106
4107/* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF,
4108 look for nested component-refs or array-refs at constant positions
4109 and find the ultimate containing object, which is returned. */
4110
4111extern tree get_inner_reference (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
4112 tree *, enum machine_mode *, int *, int *,
4113 bool);
4114
| 1/* Front-end tree definitions for GNU compiler.
2 Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
2002110-1301, USA. */
21
22#ifndef GCC_TREE_H
23#define GCC_TREE_H
24
25#include "hashtab.h"
26#include "machmode.h"
27#include "input.h"
28#include "statistics.h"
29#include "vec.h"
30
31/* Codes of tree nodes */
32
33#define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
34
35enum tree_code {
36#include "tree.def"
37
38 LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for
39 NUM_TREE_CODES. */
40};
41
42#undef DEFTREECODE
43
44extern unsigned char tree_contains_struct[256][64];
45#define CODE_CONTAINS_STRUCT(CODE, STRUCT) (tree_contains_struct[(CODE)][(STRUCT)])
46
47/* Number of language-independent tree codes. */
48#define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
49
50/* Tree code classes. */
51
52/* Each tree_code has an associated code class represented by a
53 TREE_CODE_CLASS. */
54
55enum tree_code_class {
56 tcc_exceptional, /* An exceptional code (fits no category). */
57 tcc_constant, /* A constant. */
58 /* Order of tcc_type and tcc_declaration is important. */
59 tcc_type, /* A type object code. */
60 tcc_declaration, /* A declaration (also serving as variable refs). */
61 tcc_reference, /* A reference to storage. */
62 tcc_comparison, /* A comparison expression. */
63 tcc_unary, /* A unary arithmetic expression. */
64 tcc_binary, /* A binary arithmetic expression. */
65 tcc_statement, /* A statement expression, which have side effects
66 but usually no interesting value. */
67 tcc_expression /* Any other expression. */
68};
69
70/* Each tree code class has an associated string representation.
71 These must correspond to the tree_code_class entries. */
72
73extern const char *const tree_code_class_strings[];
74
75/* Returns the string representing CLASS. */
76
77#define TREE_CODE_CLASS_STRING(CLASS)\
78 tree_code_class_strings[(int) (CLASS)]
79
80#define MAX_TREE_CODES 256
81extern const enum tree_code_class tree_code_type[];
82#define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
83
84/* Nonzero if CODE represents an exceptional code. */
85
86#define EXCEPTIONAL_CLASS_P(CODE)\
87 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
88
89/* Nonzero if CODE represents a constant. */
90
91#define CONSTANT_CLASS_P(CODE)\
92 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
93
94/* Nonzero if CODE represents a type. */
95
96#define TYPE_P(CODE)\
97 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
98
99/* Nonzero if CODE represents a declaration. */
100
101#define DECL_P(CODE)\
102 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
103
104/* Nonzero if CODE represents a memory tag. */
105
106#define MTAG_P(CODE) \
107 (TREE_CODE (CODE) == STRUCT_FIELD_TAG \
108 || TREE_CODE (CODE) == NAME_MEMORY_TAG \
109 || TREE_CODE (CODE) == SYMBOL_MEMORY_TAG)
110
111
112/* Nonzero if DECL represents a VAR_DECL or FUNCTION_DECL. */
113
114#define VAR_OR_FUNCTION_DECL_P(DECL)\
115 (TREE_CODE (DECL) == VAR_DECL || TREE_CODE (DECL) == FUNCTION_DECL)
116
117/* Nonzero if CODE represents a INDIRECT_REF. Keep these checks in
118 ascending code order. */
119
120#define INDIRECT_REF_P(CODE)\
121 (TREE_CODE (CODE) == INDIRECT_REF \
122 || TREE_CODE (CODE) == ALIGN_INDIRECT_REF \
123 || TREE_CODE (CODE) == MISALIGNED_INDIRECT_REF)
124
125/* Nonzero if CODE represents a reference. */
126
127#define REFERENCE_CLASS_P(CODE)\
128 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
129
130/* Nonzero if CODE represents a comparison. */
131
132#define COMPARISON_CLASS_P(CODE)\
133 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
134
135/* Nonzero if CODE represents a unary arithmetic expression. */
136
137#define UNARY_CLASS_P(CODE)\
138 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
139
140/* Nonzero if CODE represents a binary arithmetic expression. */
141
142#define BINARY_CLASS_P(CODE)\
143 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
144
145/* Nonzero if CODE represents a statement expression. */
146
147#define STATEMENT_CLASS_P(CODE)\
148 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
149
150/* Nonzero if CODE represents any other expression. */
151
152#define EXPRESSION_CLASS_P(CODE)\
153 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
154
155/* Returns nonzero iff CODE represents a type or declaration. */
156
157#define IS_TYPE_OR_DECL_P(CODE)\
158 (TYPE_P (CODE) || DECL_P (CODE))
159
160/* Returns nonzero iff CLASS is the tree-code class of an
161 expression. */
162
163#define IS_EXPR_CODE_CLASS(CLASS)\
164 ((CLASS) >= tcc_reference && (CLASS) <= tcc_expression)
165
166/* Returns nonzero iff NODE is an expression of some kind. */
167
168#define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
169
170/* Returns nonzero iff NODE is an OpenMP directive. */
171
172#define OMP_DIRECTIVE_P(NODE) \
173 (TREE_CODE (NODE) == OMP_PARALLEL \
174 || TREE_CODE (NODE) == OMP_FOR \
175 || TREE_CODE (NODE) == OMP_SECTIONS \
176 || TREE_CODE (NODE) == OMP_SINGLE \
177 || TREE_CODE (NODE) == OMP_SECTION \
178 || TREE_CODE (NODE) == OMP_MASTER \
179 || TREE_CODE (NODE) == OMP_ORDERED \
180 || TREE_CODE (NODE) == OMP_CRITICAL \
181 || TREE_CODE (NODE) == OMP_RETURN \
182 || TREE_CODE (NODE) == OMP_CONTINUE)
183
184/* Number of argument-words in each kind of tree-node. */
185
186extern const unsigned char tree_code_length[];
187#define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
188
189/* Names of tree components. */
190
191extern const char *const tree_code_name[];
192
193/* A vectors of trees. */
194DEF_VEC_P(tree);
195DEF_VEC_ALLOC_P(tree,gc);
196DEF_VEC_ALLOC_P(tree,heap);
197
198
199/* Classify which part of the compiler has defined a given builtin function.
200 Note that we assume below that this is no more than two bits. */
201enum built_in_class
202{
203 NOT_BUILT_IN = 0,
204 BUILT_IN_FRONTEND,
205 BUILT_IN_MD,
206 BUILT_IN_NORMAL
207};
208
209/* Names for the above. */
210extern const char *const built_in_class_names[4];
211
212/* Codes that identify the various built in functions
213 so that expand_call can identify them quickly. */
214
215#define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
216enum built_in_function
217{
218#include "builtins.def"
219
220 /* Complex division routines in libgcc. These are done via builtins
221 because emit_library_call_value can't handle complex values. */
222 BUILT_IN_COMPLEX_MUL_MIN,
223 BUILT_IN_COMPLEX_MUL_MAX
224 = BUILT_IN_COMPLEX_MUL_MIN
225 + MAX_MODE_COMPLEX_FLOAT
226 - MIN_MODE_COMPLEX_FLOAT,
227
228 BUILT_IN_COMPLEX_DIV_MIN,
229 BUILT_IN_COMPLEX_DIV_MAX
230 = BUILT_IN_COMPLEX_DIV_MIN
231 + MAX_MODE_COMPLEX_FLOAT
232 - MIN_MODE_COMPLEX_FLOAT,
233
234 /* Upper bound on non-language-specific builtins. */
235 END_BUILTINS
236};
237#undef DEF_BUILTIN
238
239/* Names for the above. */
240extern const char * built_in_names[(int) END_BUILTINS];
241
242/* Helper macros for math builtins. */
243
244#define BUILTIN_EXP10_P(FN) \
245 ((FN) == BUILT_IN_EXP10 || (FN) == BUILT_IN_EXP10F || (FN) == BUILT_IN_EXP10L \
246 || (FN) == BUILT_IN_POW10 || (FN) == BUILT_IN_POW10F || (FN) == BUILT_IN_POW10L)
247
248#define BUILTIN_EXPONENT_P(FN) (BUILTIN_EXP10_P (FN) \
249 || (FN) == BUILT_IN_EXP || (FN) == BUILT_IN_EXPF || (FN) == BUILT_IN_EXPL \
250 || (FN) == BUILT_IN_EXP2 || (FN) == BUILT_IN_EXP2F || (FN) == BUILT_IN_EXP2L)
251
252#define BUILTIN_SQRT_P(FN) \
253 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
254
255#define BUILTIN_CBRT_P(FN) \
256 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
257
258#define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
259
260#define CASE_FLT_FN(FN) case FN: case FN##F: case FN##L
261#define CASE_INT_FN(FN) case FN: case FN##L: case FN##LL
262
263/* An array of _DECL trees for the above. */
264extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
265extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
266
267/* In an OMP_CLAUSE node. */
268
269/* Number of operands and names for each clause. */
270extern unsigned const char omp_clause_num_ops[];
271extern const char * const omp_clause_code_name[];
272
273/* Clause codes. Do not reorder, as this is used to index into the tables
274 omp_clause_num_ops and omp_clause_code_name. */
275enum omp_clause_code
276{
277 /* Clause zero is special-cased inside the parser
278 (c_parser_omp_variable_list). */
279 OMP_CLAUSE_ERROR = 0,
280
281 /* OpenMP clause: private (variable_list). */
282 OMP_CLAUSE_PRIVATE,
283
284 /* OpenMP clause: shared (variable_list). */
285 OMP_CLAUSE_SHARED,
286
287 /* OpenMP clause: firstprivate (variable_list). */
288 OMP_CLAUSE_FIRSTPRIVATE,
289
290 /* OpenMP clause: lastprivate (variable_list). */
291 OMP_CLAUSE_LASTPRIVATE,
292
293 /* OpenMP clause: reduction (operator:variable_list).
294 OMP_CLAUSE_REDUCTION_CODE: The tree_code of the operator.
295 Operand 1: OMP_CLAUSE_REDUCTION_INIT: Stmt-list to initialize the var.
296 Operand 2: OMP_CLAUSE_REDUCTION_MERGE: Stmt-list to merge private var
297 into the shared one.
298 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
299 placeholder used in OMP_CLAUSE_REDUCTION_MERGE. */
300 OMP_CLAUSE_REDUCTION,
301
302 /* OpenMP clause: copyin (variable_list). */
303 OMP_CLAUSE_COPYIN,
304
305 /* OpenMP clause: copyprivate (variable_list). */
306 OMP_CLAUSE_COPYPRIVATE,
307
308 /* OpenMP clause: if (scalar-expression). */
309 OMP_CLAUSE_IF,
310
311 /* OpenMP clause: num_threads (integer-expression). */
312 OMP_CLAUSE_NUM_THREADS,
313
314 /* OpenMP clause: schedule. */
315 OMP_CLAUSE_SCHEDULE,
316
317 /* OpenMP clause: nowait. */
318 OMP_CLAUSE_NOWAIT,
319
320 /* OpenMP clause: ordered. */
321 OMP_CLAUSE_ORDERED,
322
323 /* OpenMP clause: default. */
324 OMP_CLAUSE_DEFAULT
325};
326
327/* The definition of tree nodes fills the next several pages. */
328
329/* A tree node can represent a data type, a variable, an expression
330 or a statement. Each node has a TREE_CODE which says what kind of
331 thing it represents. Some common codes are:
332 INTEGER_TYPE -- represents a type of integers.
333 ARRAY_TYPE -- represents a type of pointer.
334 VAR_DECL -- represents a declared variable.
335 INTEGER_CST -- represents a constant integer value.
336 PLUS_EXPR -- represents a sum (an expression).
337
338 As for the contents of a tree node: there are some fields
339 that all nodes share. Each TREE_CODE has various special-purpose
340 fields as well. The fields of a node are never accessed directly,
341 always through accessor macros. */
342
343/* Every kind of tree node starts with this structure,
344 so all nodes have these fields.
345
346 See the accessor macros, defined below, for documentation of the
347 fields. */
348union tree_ann_d;
349
350struct tree_common GTY(())
351{
352 tree chain;
353 tree type;
354 union tree_ann_d *ann;
355
356 ENUM_BITFIELD(tree_code) code : 8;
357
358 unsigned side_effects_flag : 1;
359 unsigned constant_flag : 1;
360 unsigned addressable_flag : 1;
361 unsigned volatile_flag : 1;
362 unsigned readonly_flag : 1;
363 unsigned unsigned_flag : 1;
364 unsigned asm_written_flag: 1;
365 unsigned nowarning_flag : 1;
366
367 unsigned used_flag : 1;
368 unsigned nothrow_flag : 1;
369 unsigned static_flag : 1;
370 unsigned public_flag : 1;
371 unsigned private_flag : 1;
372 unsigned protected_flag : 1;
373 unsigned deprecated_flag : 1;
374 unsigned invariant_flag : 1;
375
376 unsigned lang_flag_0 : 1;
377 unsigned lang_flag_1 : 1;
378 unsigned lang_flag_2 : 1;
379 unsigned lang_flag_3 : 1;
380 unsigned lang_flag_4 : 1;
381 unsigned lang_flag_5 : 1;
382 unsigned lang_flag_6 : 1;
383 unsigned visited : 1;
384};
385
386/* The following table lists the uses of each of the above flags and
387 for which types of nodes they are defined. Note that expressions
388 include decls.
389
390 addressable_flag:
391
392 TREE_ADDRESSABLE in
393 VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL,
394 ..._TYPE, IDENTIFIER_NODE.
395 In a STMT_EXPR, it means we want the result of the enclosed
396 expression.
397 CALL_EXPR_TAILCALL in CALL_EXPR
398 CASE_LOW_SEEN in CASE_LABEL_EXPR
399
400 static_flag:
401
402 TREE_STATIC in
403 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR
404 BINFO_VIRTUAL_P in
405 TREE_BINFO
406 TREE_CONSTANT_OVERFLOW in
407 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
408 TREE_SYMBOL_REFERENCED in
409 IDENTIFIER_NODE
410 CLEANUP_EH_ONLY in
411 TARGET_EXPR, WITH_CLEANUP_EXPR
412 ASM_INPUT_P in
413 ASM_EXPR
414 EH_FILTER_MUST_NOT_THROW in EH_FILTER_EXPR
415 TYPE_REF_CAN_ALIAS_ALL in
416 POINTER_TYPE, REFERENCE_TYPE
417 CASE_HIGH_SEEN in CASE_LABEL_EXPR
418
419 public_flag:
420
421 TREE_OVERFLOW in
422 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
423 TREE_PUBLIC in
424 VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
425 ASM_VOLATILE_P in
426 ASM_EXPR
427 TYPE_CACHED_VALUES_P in
428 ..._TYPE
429 SAVE_EXPR_RESOLVED_P in
430 SAVE_EXPR
431 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
432 OMP_CLAUSE_LASTPRIVATE
433 OMP_CLAUSE_PRIVATE_DEBUG in
434 OMP_CLAUSE_PRIVATE
435
436 private_flag:
437
438 TREE_PRIVATE in
439 ..._DECL
440 CALL_EXPR_RETURN_SLOT_OPT in
441 CALL_EXPR
442 DECL_BY_REFERENCE in
443 PARM_DECL, RESULT_DECL
444 OMP_RETURN_NOWAIT in
445 OMP_RETURN
446 OMP_SECTION_LAST in
447 OMP_SECTION
448 OMP_PARALLEL_COMBINED in
449 OMP_PARALLEL
450
451 protected_flag:
452
453 TREE_PROTECTED in
454 BLOCK
455 ..._DECL
456 CALL_FROM_THUNK_P in
457 CALL_EXPR
458
459 side_effects_flag:
460
461 TREE_SIDE_EFFECTS in
462 all expressions
463 all decls
464 all constants
465
466 FORCED_LABEL in
467 LABEL_DECL
468
469 volatile_flag:
470
471 TREE_THIS_VOLATILE in
472 all expressions
473 TYPE_VOLATILE in
474 ..._TYPE
475
476 readonly_flag:
477
478 TREE_READONLY in
479 all expressions
480 TYPE_READONLY in
481 ..._TYPE
482
483 constant_flag:
484
485 TREE_CONSTANT in
486 all expressions
487 all decls
488 all constants
489 TYPE_SIZES_GIMPLIFIED
490 ..._TYPE
491
492 unsigned_flag:
493
494 TYPE_UNSIGNED in
495 all types
496 DECL_UNSIGNED in
497 all decls
498 BIT_FIELD_REF_UNSIGNED in
499 BIT_FIELD_REF
500
501 asm_written_flag:
502
503 TREE_ASM_WRITTEN in
504 VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
505 BLOCK, SSA_NAME
506
507 used_flag:
508
509 TREE_USED in
510 expressions, IDENTIFIER_NODE
511
512 nothrow_flag:
513
514 TREE_NOTHROW in
515 CALL_EXPR, FUNCTION_DECL
516
517 TYPE_ALIGN_OK in
518 ..._TYPE
519
520 TREE_THIS_NOTRAP in
521 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
522
523 deprecated_flag:
524
525 TREE_DEPRECATED in
526 ..._DECL
527
528 IDENTIFIER_TRANSPARENT_ALIAS in
529 IDENTIFIER_NODE
530
531 visited:
532
533 Used in tree traversals to mark visited nodes.
534
535 invariant_flag:
536
537 TREE_INVARIANT in
538 all expressions.
539
540 nowarning_flag:
541
542 TREE_NO_WARNING in
543 ... any expr or decl node
544*/
545#undef DEFTREESTRUCT
546#define DEFTREESTRUCT(ENUM, NAME) ENUM,
547enum tree_node_structure_enum {
548#include "treestruct.def"
549 LAST_TS_ENUM
550};
551#undef DEFTREESTRUCT
552
553/* Define accessors for the fields that all tree nodes have
554 (though some fields are not used for all kinds of nodes). */
555
556/* The tree-code says what kind of node it is.
557 Codes are defined in tree.def. */
558#define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code)
559#define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (VALUE))
560
561/* When checking is enabled, errors will be generated if a tree node
562 is accessed incorrectly. The macros die with a fatal error. */
563#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
564
565#define TREE_CHECK(T, CODE) __extension__ \
566({ const tree __t = (T); \
567 if (TREE_CODE (__t) != (CODE)) \
568 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
569 (CODE), 0); \
570 __t; })
571
572#define TREE_NOT_CHECK(T, CODE) __extension__ \
573({ const tree __t = (T); \
574 if (TREE_CODE (__t) == (CODE)) \
575 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
576 (CODE), 0); \
577 __t; })
578
579#define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
580({ const tree __t = (T); \
581 if (TREE_CODE (__t) != (CODE1) \
582 && TREE_CODE (__t) != (CODE2)) \
583 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
584 (CODE1), (CODE2), 0); \
585 __t; })
586
587#define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
588({ const tree __t = (T); \
589 if (TREE_CODE (__t) == (CODE1) \
590 || TREE_CODE (__t) == (CODE2)) \
591 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
592 (CODE1), (CODE2), 0); \
593 __t; })
594
595#define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
596({ const tree __t = (T); \
597 if (TREE_CODE (__t) != (CODE1) \
598 && TREE_CODE (__t) != (CODE2) \
599 && TREE_CODE (__t) != (CODE3)) \
600 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
601 (CODE1), (CODE2), (CODE3), 0); \
602 __t; })
603
604#define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
605({ const tree __t = (T); \
606 if (TREE_CODE (__t) == (CODE1) \
607 || TREE_CODE (__t) == (CODE2) \
608 || TREE_CODE (__t) == (CODE3)) \
609 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
610 (CODE1), (CODE2), (CODE3), 0); \
611 __t; })
612
613#define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
614({ const tree __t = (T); \
615 if (TREE_CODE (__t) != (CODE1) \
616 && TREE_CODE (__t) != (CODE2) \
617 && TREE_CODE (__t) != (CODE3) \
618 && TREE_CODE (__t) != (CODE4)) \
619 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
620 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
621 __t; })
622
623#define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
624({ const tree __t = (T); \
625 if (TREE_CODE (__t) == (CODE1) \
626 || TREE_CODE (__t) == (CODE2) \
627 || TREE_CODE (__t) == (CODE3) \
628 || TREE_CODE (__t) == (CODE4)) \
629 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
630 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
631 __t; })
632
633#define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
634({ const tree __t = (T); \
635 if (TREE_CODE (__t) != (CODE1) \
636 && TREE_CODE (__t) != (CODE2) \
637 && TREE_CODE (__t) != (CODE3) \
638 && TREE_CODE (__t) != (CODE4) \
639 && TREE_CODE (__t) != (CODE5)) \
640 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
641 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
642 __t; })
643
644#define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
645({ const tree __t = (T); \
646 if (TREE_CODE (__t) == (CODE1) \
647 || TREE_CODE (__t) == (CODE2) \
648 || TREE_CODE (__t) == (CODE3) \
649 || TREE_CODE (__t) == (CODE4) \
650 || TREE_CODE (__t) == (CODE5)) \
651 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
652 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
653 __t; })
654
655#define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
656({ const tree __t = (T); \
657 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
658 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
659 __FUNCTION__); \
660 __t; })
661
662#define TREE_CLASS_CHECK(T, CLASS) __extension__ \
663({ const tree __t = (T); \
664 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
665 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
666 __FUNCTION__); \
667 __t; })
668
669#define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
670({ const tree __t = (T); \
671 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
672 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
673 (CODE1), (CODE2)); \
674 __t; })
675
676#define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
677({ const tree __t = (T); \
678 if (TREE_CODE (__t) != OMP_CLAUSE) \
679 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
680 OMP_CLAUSE, 0); \
681 if (__t->omp_clause.code != (CODE)) \
682 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
683 (CODE)); \
684 __t; })
685
686#define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
687({ const tree __t = (T); \
688 if (TREE_CODE (__t) != OMP_CLAUSE) \
689 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
690 OMP_CLAUSE, 0); \
691 if ((int) __t->omp_clause.code < (int) (CODE1) \
692 || (int) __t->omp_clause.code > (int) (CODE2)) \
693 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
694 __FUNCTION__, (CODE1), (CODE2)); \
695 __t; })
696
697/* These checks have to be special cased. */
698#define EXPR_CHECK(T) __extension__ \
699({ const tree __t = (T); \
700 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
701 if (!IS_EXPR_CODE_CLASS (__c)) \
702 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
703 __FUNCTION__); \
704 __t; })
705
706/* These checks have to be special cased. */
707#define NON_TYPE_CHECK(T) __extension__ \
708({ const tree __t = (T); \
709 if (TYPE_P (__t)) \
710 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
711 __FUNCTION__); \
712 __t; })
713
714#define TREE_VEC_ELT_CHECK(T, I) __extension__ \
715(*({const tree __t = (T); \
716 const int __i = (I); \
717 if (TREE_CODE (__t) != TREE_VEC) \
718 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
719 TREE_VEC, 0); \
720 if (__i < 0 || __i >= __t->vec.length) \
721 tree_vec_elt_check_failed (__i, __t->vec.length, \
722 __FILE__, __LINE__, __FUNCTION__); \
723 &__t->vec.a[__i]; }))
724
725#define PHI_NODE_ELT_CHECK(t, i) __extension__ \
726(*({const tree __t = t; \
727 const int __i = (i); \
728 if (TREE_CODE (__t) != PHI_NODE) \
729 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
730 PHI_NODE, 0); \
731 if (__i < 0 || __i >= __t->phi.capacity) \
732 phi_node_elt_check_failed (__i, __t->phi.num_args, \
733 __FILE__, __LINE__, __FUNCTION__); \
734 &__t->phi.a[__i]; }))
735
736#define OMP_CLAUSE_ELT_CHECK(t, i) __extension__ \
737(*({const tree __t = t; \
738 const int __i = (i); \
739 if (TREE_CODE (__t) != OMP_CLAUSE) \
740 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
741 OMP_CLAUSE, 0); \
742 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
743 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
744 __FUNCTION__); \
745 &__t->omp_clause.ops[__i]; }))
746
747/* Special checks for TREE_OPERANDs. */
748#define TREE_OPERAND_CHECK(T, I) __extension__ \
749(*({const tree __t = EXPR_CHECK (T); \
750 const int __i = (I); \
751 if (__i < 0 || __i >= TREE_CODE_LENGTH (TREE_CODE (__t))) \
752 tree_operand_check_failed (__i, TREE_CODE (__t), \
753 __FILE__, __LINE__, __FUNCTION__); \
754 &__t->exp.operands[__i]; }))
755
756#define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
757(*({const tree __t = (T); \
758 const int __i = (I); \
759 if (TREE_CODE (__t) != CODE) \
760 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
761 if (__i < 0 || __i >= TREE_CODE_LENGTH (CODE)) \
762 tree_operand_check_failed (__i, (CODE), \
763 __FILE__, __LINE__, __FUNCTION__); \
764 &__t->exp.operands[__i]; }))
765
766#define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
767(*(rtx *) \
768 ({const tree __t = (T); \
769 const int __i = (I); \
770 if (TREE_CODE (__t) != (CODE)) \
771 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
772 if (__i < 0 || __i >= TREE_CODE_LENGTH ((CODE))) \
773 tree_operand_check_failed (__i, (CODE), \
774 __FILE__, __LINE__, __FUNCTION__); \
775 &__t->exp.operands[__i]; }))
776
777extern void tree_contains_struct_check_failed (const tree,
778 const enum tree_node_structure_enum,
779 const char *, int, const char *)
780 ATTRIBUTE_NORETURN;
781
782extern void tree_check_failed (const tree, const char *, int, const char *,
783 ...) ATTRIBUTE_NORETURN;
784extern void tree_not_check_failed (const tree, const char *, int, const char *,
785 ...) ATTRIBUTE_NORETURN;
786extern void tree_class_check_failed (const tree, const enum tree_code_class,
787 const char *, int, const char *)
788 ATTRIBUTE_NORETURN;
789extern void tree_range_check_failed (const tree, const char *, int,
790 const char *, enum tree_code,
791 enum tree_code);
792extern void tree_not_class_check_failed (const tree,
793 const enum tree_code_class,
794 const char *, int, const char *)
795 ATTRIBUTE_NORETURN;
796extern void tree_vec_elt_check_failed (int, int, const char *,
797 int, const char *)
798 ATTRIBUTE_NORETURN;
799extern void phi_node_elt_check_failed (int, int, const char *,
800 int, const char *)
801 ATTRIBUTE_NORETURN;
802extern void tree_operand_check_failed (int, enum tree_code,
803 const char *, int, const char *)
804 ATTRIBUTE_NORETURN;
805extern void omp_clause_check_failed (const tree, const char *, int,
806 const char *, enum omp_clause_code)
807 ATTRIBUTE_NORETURN;
808extern void omp_clause_operand_check_failed (int, tree, const char *,
809 int, const char *)
810 ATTRIBUTE_NORETURN;
811extern void omp_clause_range_check_failed (const tree, const char *, int,
812 const char *, enum omp_clause_code,
813 enum omp_clause_code)
814 ATTRIBUTE_NORETURN;
815
816#else /* not ENABLE_TREE_CHECKING, or not gcc */
817
818#define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
819#define TREE_CHECK(T, CODE) (T)
820#define TREE_NOT_CHECK(T, CODE) (T)
821#define TREE_CHECK2(T, CODE1, CODE2) (T)
822#define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
823#define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
824#define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
825#define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
826#define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
827#define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
828#define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
829#define TREE_CLASS_CHECK(T, CODE) (T)
830#define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
831#define EXPR_CHECK(T) (T)
832#define NON_TYPE_CHECK(T) (T)
833#define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
834#define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
835#define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
836#define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
837#define PHI_NODE_ELT_CHECK(T, i) ((T)->phi.a[i])
838#define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
839#define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
840#define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
841
842#endif
843
844#define TREE_BLOCK(NODE) (EXPR_CHECK (NODE)->exp.block)
845
846#include "tree-check.h"
847
848#define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
849#define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
850#define TREE_MEMORY_TAG_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_MEMORY_TAG)
851#define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
852#define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
853#define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
854#define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
855#define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
856#define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
857#define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
858#define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
859
860#define RECORD_OR_UNION_CHECK(T) \
861 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
862#define NOT_RECORD_OR_UNION_CHECK(T) \
863 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
864
865#define NUMERICAL_TYPE_CHECK(T) \
866 TREE_CHECK4 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE)
867
868/* In all nodes that are expressions, this is the data type of the expression.
869 In POINTER_TYPE nodes, this is the type that the pointer points to.
870 In ARRAY_TYPE nodes, this is the type of the elements.
871 In VECTOR_TYPE nodes, this is the type of the elements. */
872#define TREE_TYPE(NODE) ((NODE)->common.type)
873
874/* Here is how primitive or already-canonicalized types' hash codes
875 are made. */
876#define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
877
878/* A simple hash function for an arbitrary tree node. This must not be
879 used in hash tables which are saved to a PCH. */
880#define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
881
882/* Nodes are chained together for many purposes.
883 Types are chained together to record them for being output to the debugger
884 (see the function `chain_type').
885 Decls in the same scope are chained together to record the contents
886 of the scope.
887 Statement nodes for successive statements used to be chained together.
888 Often lists of things are represented by TREE_LIST nodes that
889 are chained together. */
890
891#define TREE_CHAIN(NODE) ((NODE)->common.chain)
892
893/* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
894 that don't change the machine mode. */
895
896#define STRIP_NOPS(EXP) \
897 while ((TREE_CODE (EXP) == NOP_EXPR \
898 || TREE_CODE (EXP) == CONVERT_EXPR \
899 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
900 && TREE_OPERAND (EXP, 0) != error_mark_node \
901 && (TYPE_MODE (TREE_TYPE (EXP)) \
902 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
903 (EXP) = TREE_OPERAND (EXP, 0)
904
905/* Like STRIP_NOPS, but don't let the signedness change either. */
906
907#define STRIP_SIGN_NOPS(EXP) \
908 while ((TREE_CODE (EXP) == NOP_EXPR \
909 || TREE_CODE (EXP) == CONVERT_EXPR \
910 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
911 && TREE_OPERAND (EXP, 0) != error_mark_node \
912 && (TYPE_MODE (TREE_TYPE (EXP)) \
913 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
914 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
915 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
916 (EXP) = TREE_OPERAND (EXP, 0)
917
918/* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
919
920#define STRIP_TYPE_NOPS(EXP) \
921 while ((TREE_CODE (EXP) == NOP_EXPR \
922 || TREE_CODE (EXP) == CONVERT_EXPR \
923 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
924 && TREE_OPERAND (EXP, 0) != error_mark_node \
925 && (TREE_TYPE (EXP) \
926 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
927 (EXP) = TREE_OPERAND (EXP, 0)
928
929/* Remove unnecessary type conversions according to
930 tree_ssa_useless_type_conversion. */
931
932#define STRIP_USELESS_TYPE_CONVERSION(EXP) \
933 while (tree_ssa_useless_type_conversion (EXP)) \
934 EXP = TREE_OPERAND (EXP, 0)
935
936/* Nonzero if TYPE represents an integral type. Note that we do not
937 include COMPLEX types here. Keep these checks in ascending code
938 order. */
939
940#define INTEGRAL_TYPE_P(TYPE) \
941 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
942 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
943 || TREE_CODE (TYPE) == INTEGER_TYPE)
944
945/* Nonzero if TYPE represents a scalar floating-point type. */
946
947#define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
948
949/* Nonzero if TYPE represents a complex floating-point type. */
950
951#define COMPLEX_FLOAT_TYPE_P(TYPE) \
952 (TREE_CODE (TYPE) == COMPLEX_TYPE \
953 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
954
955/* Nonzero if TYPE represents a vector floating-point type. */
956
957#define VECTOR_FLOAT_TYPE_P(TYPE) \
958 (TREE_CODE (TYPE) == VECTOR_TYPE \
959 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
960
961/* Nonzero if TYPE represents a floating-point type, including complex
962 and vector floating-point types. The vector and complex check does
963 not use the previous two macros to enable early folding. */
964
965#define FLOAT_TYPE_P(TYPE) \
966 (SCALAR_FLOAT_TYPE_P (TYPE) \
967 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
968 || TREE_CODE (TYPE) == VECTOR_TYPE) \
969 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
970
971/* Nonzero if TYPE represents a decimal floating-point type. */
972#define DECIMAL_FLOAT_TYPE_P(TYPE) \
973 (SCALAR_FLOAT_TYPE_P (TYPE) \
974 && DECIMAL_FLOAT_MODE_P (TYPE_MODE (TYPE)))
975
976/* Nonzero if TYPE represents an aggregate (multi-component) type.
977 Keep these checks in ascending code order. */
978
979#define AGGREGATE_TYPE_P(TYPE) \
980 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
981 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
982
983/* Nonzero if TYPE represents a pointer or reference type.
984 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
985 ascending code order. */
986
987#define POINTER_TYPE_P(TYPE) \
988 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
989
990/* Nonzero if this type is a complete type. */
991#define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
992
993/* Nonzero if this type is the (possibly qualified) void type. */
994#define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
995
996/* Nonzero if this type is complete or is cv void. */
997#define COMPLETE_OR_VOID_TYPE_P(NODE) \
998 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
999
1000/* Nonzero if this type is complete or is an array with unspecified bound. */
1001#define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
1002 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
1003
1004
1005/* Define many boolean fields that all tree nodes have. */
1006
1007/* In VAR_DECL nodes, nonzero means address of this is needed.
1008 So it cannot be in a register.
1009 In a FUNCTION_DECL, nonzero means its address is needed.
1010 So it must be compiled even if it is an inline function.
1011 In a FIELD_DECL node, it means that the programmer is permitted to
1012 construct the address of this field. This is used for aliasing
1013 purposes: see record_component_aliases.
1014 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1015 In LABEL_DECL nodes, it means a goto for this label has been seen
1016 from a place outside all binding contours that restore stack levels.
1017 In ..._TYPE nodes, it means that objects of this type must
1018 be fully addressable. This means that pieces of this
1019 object cannot go into register parameters, for example.
1020 In IDENTIFIER_NODEs, this means that some extern decl for this name
1021 had its address taken. That matters for inline functions. */
1022#define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag)
1023
1024/* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1025 exit of a function. Calls for which this is true are candidates for tail
1026 call optimizations. */
1027#define CALL_EXPR_TAILCALL(NODE) (CALL_EXPR_CHECK(NODE)->common.addressable_flag)
1028
1029/* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1030 CASE_LOW operand has been processed. */
1031#define CASE_LOW_SEEN(NODE) \
1032 (CASE_LABEL_EXPR_CHECK (NODE)->common.addressable_flag)
1033
1034/* In a VAR_DECL, nonzero means allocate static storage.
1035 In a FUNCTION_DECL, nonzero if function has been defined.
1036 In a CONSTRUCTOR, nonzero means allocate static storage.
1037
1038 ??? This is also used in lots of other nodes in unclear ways which
1039 should be cleaned up some day. */
1040#define TREE_STATIC(NODE) ((NODE)->common.static_flag)
1041
1042/* In a TARGET_EXPR, WITH_CLEANUP_EXPR, means that the pertinent cleanup
1043 should only be executed if an exception is thrown, not on normal exit
1044 of its scope. */
1045#define CLEANUP_EH_ONLY(NODE) ((NODE)->common.static_flag)
1046
1047/* Used as a temporary field on a CASE_LABEL_EXPR to indicate that the
1048 CASE_HIGH operand has been processed. */
1049#define CASE_HIGH_SEEN(NODE) \
1050 (CASE_LABEL_EXPR_CHECK (NODE)->common.static_flag)
1051
1052/* In an expr node (usually a conversion) this means the node was made
1053 implicitly and should not lead to any sort of warning. In a decl node,
1054 warnings concerning the decl should be suppressed. This is used at
1055 least for used-before-set warnings, and it set after one warning is
1056 emitted. */
1057#define TREE_NO_WARNING(NODE) ((NODE)->common.nowarning_flag)
1058
1059/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST this means
1060 there was an overflow in folding. This is distinct from
1061 TREE_OVERFLOW because ANSI C requires a diagnostic when overflows
1062 occur in constant expressions. */
1063#define TREE_CONSTANT_OVERFLOW(NODE) (CST_CHECK (NODE)->common.static_flag)
1064
1065/* In an IDENTIFIER_NODE, this means that assemble_name was called with
1066 this string as an argument. */
1067#define TREE_SYMBOL_REFERENCED(NODE) \
1068 (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
1069
1070/* Nonzero in a pointer or reference type means the data pointed to
1071 by this type can alias anything. */
1072#define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1073 (PTR_OR_REF_CHECK (NODE)->common.static_flag)
1074
1075/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1076 there was an overflow in folding, and no warning has been issued
1077 for this subexpression. TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW,
1078 but not vice versa. */
1079
1080#define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->common.public_flag)
1081
1082/* In a VAR_DECL, FUNCTION_DECL, NAMESPACE_DECL or TYPE_DECL,
1083 nonzero means name is to be accessible from outside this module.
1084 In an IDENTIFIER_NODE, nonzero means an external declaration
1085 accessible from outside this module was previously seen
1086 for this name in an inner scope. */
1087#define TREE_PUBLIC(NODE) ((NODE)->common.public_flag)
1088
1089/* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1090 of cached values, or is something else. */
1091#define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->common.public_flag)
1092
1093/* In a SAVE_EXPR, indicates that the original expression has already
1094 been substituted with a VAR_DECL that contains the value. */
1095#define SAVE_EXPR_RESOLVED_P(NODE) \
1096 (TREE_CHECK (NODE, SAVE_EXPR)->common.public_flag)
1097
1098/* In any expression, decl, or constant, nonzero means it has side effects or
1099 reevaluation of the whole expression could produce a different value.
1100 This is set if any subexpression is a function call, a side effect or a
1101 reference to a volatile variable. In a ..._DECL, this is set only if the
1102 declaration said `volatile'. This will never be set for a constant. */
1103#define TREE_SIDE_EFFECTS(NODE) \
1104 (NON_TYPE_CHECK (NODE)->common.side_effects_flag)
1105
1106/* In a LABEL_DECL, nonzero means this label had its address taken
1107 and therefore can never be deleted and is a jump target for
1108 computed gotos. */
1109#define FORCED_LABEL(NODE) ((NODE)->common.side_effects_flag)
1110
1111/* Nonzero means this expression is volatile in the C sense:
1112 its address should be of type `volatile WHATEVER *'.
1113 In other words, the declared item is volatile qualified.
1114 This is used in _DECL nodes and _REF nodes.
1115 On a FUNCTION_DECL node, this means the function does not
1116 return normally. This is the same effect as setting
1117 the attribute noreturn on the function in C.
1118
1119 In a ..._TYPE node, means this type is volatile-qualified.
1120 But use TYPE_VOLATILE instead of this macro when the node is a type,
1121 because eventually we may make that a different bit.
1122
1123 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1124#define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag)
1125
1126/* Nonzero means this node will not trap. In an INDIRECT_REF, means
1127 accessing the memory pointed to won't generate a trap. However,
1128 this only applies to an object when used appropriately: it doesn't
1129 mean that writing a READONLY mem won't trap. Similarly for
1130 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1131
1132 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1133 (or slice of the array) always belongs to the range of the array.
1134 I.e. that the access will not trap, provided that the access to
1135 the base to the array will not trap. */
1136#define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
1137
1138/* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1139 nonzero means it may not be the lhs of an assignment. */
1140#define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)
1141
1142/* Nonzero if NODE is a _DECL with TREE_READONLY set. */
1143#define TREE_READONLY_DECL_P(NODE)\
1144 (DECL_P (NODE) && TREE_READONLY (NODE))
1145
1146/* Value of expression is constant. Always on in all ..._CST nodes. May
1147 also appear in an expression or decl where the value is constant. */
1148#define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->common.constant_flag)
1149
1150/* Nonzero if NODE, a type, has had its sizes gimplified. */
1151#define TYPE_SIZES_GIMPLIFIED(NODE) (TYPE_CHECK (NODE)->common.constant_flag)
1152
1153/* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1154#define DECL_UNSIGNED(NODE) (DECL_COMMON_CHECK (NODE)->common.unsigned_flag)
1155
1156/* In a BIT_FIELD_REF, means the bitfield is to be interpreted as unsigned. */
1157#define BIT_FIELD_REF_UNSIGNED(NODE) \
1158 (BIT_FIELD_REF_CHECK (NODE)->common.unsigned_flag)
1159
1160/* In integral and pointer types, means an unsigned type. */
1161#define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->common.unsigned_flag)
1162
1163/* Nonzero in a VAR_DECL means assembler code has been written.
1164 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1165 This is interesting in an inline function, since it might not need
1166 to be compiled separately.
1167 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1168 if the sdb debugging info for the type has been written.
1169 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1170 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1171 PHI node. */
1172#define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag)
1173
1174/* Nonzero in a _DECL if the name is used in its scope.
1175 Nonzero in an expr node means inhibit warning if value is unused.
1176 In IDENTIFIER_NODEs, this means that some extern decl for this name
1177 was used.
1178 In a BLOCK, this means that the block contains variables that are used. */
1179#define TREE_USED(NODE) ((NODE)->common.used_flag)
1180
1181/* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1182 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1183#define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
1184
1185/* In a CALL_EXPR, means that it's safe to use the target of the call
1186 expansion as the return slot for a call that returns in memory. */
1187#define CALL_EXPR_RETURN_SLOT_OPT(NODE) ((NODE)->common.private_flag)
1188
1189/* In a RESULT_DECL or PARM_DECL, means that it is passed by invisible
1190 reference (and the TREE_TYPE is a pointer to the true type). */
1191#define DECL_BY_REFERENCE(NODE) (DECL_COMMON_CHECK (NODE)->common.private_flag)
1192
1193/* In a CALL_EXPR, means that the call is the jump from a thunk to the
1194 thunked-to function. */
1195#define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->common.protected_flag)
1196
1197/* In a type, nonzero means that all objects of the type are guaranteed by the
1198 language or front-end to be properly aligned, so we can indicate that a MEM
1199 of this type is aligned at least to the alignment of the type, even if it
1200 doesn't appear that it is. We see this, for example, in object-oriented
1201 languages where a tag field may show this is an object of a more-aligned
1202 variant of the more generic type.
1203
1204 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1205 freelist. */
1206#define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->common.nothrow_flag)
1207
1208/* Used in classes in C++. */
1209#define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
1210/* Used in classes in C++.
1211 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */
1212#define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag)
1213
1214/* Nonzero in a _DECL if the use of the name is defined as a
1215 deprecated feature by __attribute__((deprecated)). */
1216#define TREE_DEPRECATED(NODE) \
1217 ((NODE)->common.deprecated_flag)
1218
1219/* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1220 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1221#define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1222 (IDENTIFIER_NODE_CHECK (NODE)->common.deprecated_flag)
1223
1224/* Value of expression is function invariant. A strict subset of
1225 TREE_CONSTANT, such an expression is constant over any one function
1226 invocation, though not across different invocations. May appear in
1227 any expression node. */
1228#define TREE_INVARIANT(NODE) ((NODE)->common.invariant_flag)
1229
1230/* These flags are available for each language front end to use internally. */
1231#define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
1232#define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
1233#define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2)
1234#define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3)
1235#define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4)
1236#define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5)
1237#define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6)
1238
1239/* Define additional fields and accessors for nodes representing constants. */
1240
1241/* In an INTEGER_CST node. These two together make a 2-word integer.
1242 If the data type is signed, the value is sign-extended to 2 words
1243 even though not all of them may really be in use.
1244 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1245#define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1246#define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1247#define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1248
1249#define INT_CST_LT(A, B) \
1250 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1251 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1252 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1253
1254#define INT_CST_LT_UNSIGNED(A, B) \
1255 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1256 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1257 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1258 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1259 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1260
1261struct tree_int_cst GTY(())
1262{
1263 struct tree_common common;
1264 double_int int_cst;
1265};
1266
1267/* In a REAL_CST node. struct real_value is an opaque entity, with
1268 manipulators defined in real.h. We don't want tree.h depending on
1269 real.h and transitively on tm.h. */
1270struct real_value;
1271
1272#define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1273#define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1274
1275struct tree_real_cst GTY(())
1276{
1277 struct tree_common common;
1278 struct real_value * real_cst_ptr;
1279};
1280
1281/* In a STRING_CST */
1282#define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1283#define TREE_STRING_POINTER(NODE) \
1284 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1285
1286struct tree_string GTY(())
1287{
1288 struct tree_common common;
1289 int length;
1290 char str[1];
1291};
1292
1293/* In a COMPLEX_CST node. */
1294#define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1295#define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1296
1297struct tree_complex GTY(())
1298{
1299 struct tree_common common;
1300 tree real;
1301 tree imag;
1302};
1303
1304/* In a VECTOR_CST node. */
1305#define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1306
1307struct tree_vector GTY(())
1308{
1309 struct tree_common common;
1310 tree elements;
1311};
1312
1313#include "symtab.h"
1314
1315/* Define fields and accessors for some special-purpose tree nodes. */
1316
1317#define IDENTIFIER_LENGTH(NODE) \
1318 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1319#define IDENTIFIER_POINTER(NODE) \
1320 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1321#define IDENTIFIER_HASH_VALUE(NODE) \
1322 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1323
1324/* Translate a hash table identifier pointer to a tree_identifier
1325 pointer, and vice versa. */
1326
1327#define HT_IDENT_TO_GCC_IDENT(NODE) \
1328 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1329#define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1330
1331struct tree_identifier GTY(())
1332{
1333 struct tree_common common;
1334 struct ht_identifier id;
1335};
1336
1337/* In a TREE_LIST node. */
1338#define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1339#define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1340
1341struct tree_list GTY(())
1342{
1343 struct tree_common common;
1344 tree purpose;
1345 tree value;
1346};
1347
1348/* In a TREE_VEC node. */
1349#define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1350#define TREE_VEC_END(NODE) \
1351 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1352
1353#define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1354
1355struct tree_vec GTY(())
1356{
1357 struct tree_common common;
1358 int length;
1359 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1360};
1361
1362/* In a CONSTRUCTOR node. */
1363#define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1364
1365/* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1366 value of each element (stored within VAL). IX must be a scratch variable
1367 of unsigned integer type. */
1368#define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1369 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1370 ? false \
1371 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1372 true); \
1373 (IX)++)
1374
1375/* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1376 the value of each element (stored within VAL) and its index (stored
1377 within INDEX). IX must be a scratch variable of unsigned integer type. */
1378#define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1379 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1380 ? false \
1381 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1382 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1383 true); \
1384 (IX)++)
1385
1386/* Append a new constructor element to V, with the specified INDEX and VAL. */
1387#define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1388 do { \
1389 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1390 _ce___->index = INDEX; \
1391 _ce___->value = VALUE; \
1392 } while (0)
1393
1394/* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1395 element. INDEX can optionally design the position of VALUE: in arrays,
1396 it is the index where VALUE has to be placed; in structures, it is the
1397 FIELD_DECL of the member. */
1398typedef struct constructor_elt_d GTY(())
1399{
1400 tree index;
1401 tree value;
1402} constructor_elt;
1403
1404DEF_VEC_O(constructor_elt);
1405DEF_VEC_ALLOC_O(constructor_elt,gc);
1406
1407struct tree_constructor GTY(())
1408{
1409 struct tree_common common;
1410 VEC(constructor_elt,gc) *elts;
1411};
1412
1413/* Define fields and accessors for some nodes that represent expressions. */
1414
1415/* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1416#define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1417 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1418 && integer_zerop (TREE_OPERAND (NODE, 0)))
1419
1420/* In ordinary expression nodes. */
1421#define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1422#define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity)
1423
1424/* In a LOOP_EXPR node. */
1425#define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1426
1427#ifdef USE_MAPPED_LOCATION
1428/* The source location of this expression. Non-tree_exp nodes such as
1429 decls and constants can be shared among multiple locations, so
1430 return nothing. */
1431#define EXPR_LOCATION(NODE) \
1432 (EXPR_P (NODE) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1433#define SET_EXPR_LOCATION(NODE, FROM) \
1434 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1435#define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1436/* EXPR_LOCUS and SET_EXPR_LOCUS are deprecated. */
1437#define EXPR_LOCUS(NODE) \
1438 (EXPR_P (NODE) ? &(NODE)->exp.locus : (location_t *)NULL)
1439#define SET_EXPR_LOCUS(NODE, FROM) \
1440 do { source_location *loc_tmp = FROM; \
1441 EXPR_CHECK (NODE)->exp.locus \
1442 = loc_tmp == NULL ? UNKNOWN_LOCATION : *loc_tmp; } while (0)
1443#define EXPR_FILENAME(NODE) \
1444 LOCATION_FILE (EXPR_CHECK (NODE)->exp.locus)
1445#define EXPR_LINENO(NODE) \
1446 LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1447#else
1448/* The source location of this expression. Non-tree_exp nodes such as
1449 decls and constants can be shared among multiple locations, so
1450 return nothing. */
1451#define EXPR_LOCUS(NODE) \
1452 (EXPR_P (NODE) ? (NODE)->exp.locus : (location_t *)NULL)
1453#define SET_EXPR_LOCUS(NODE, FROM) \
1454 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1455#define SET_EXPR_LOCATION(NODE, FROM) annotate_with_locus (NODE, FROM)
1456#define EXPR_FILENAME(NODE) \
1457 (EXPR_CHECK (NODE)->exp.locus->file)
1458#define EXPR_LINENO(NODE) \
1459 (EXPR_CHECK (NODE)->exp.locus->line)
1460#define EXPR_HAS_LOCATION(NODE) (EXPR_LOCUS (NODE) != NULL)
1461#define EXPR_LOCATION(NODE) \
1462 (EXPR_HAS_LOCATION(NODE) ? *(NODE)->exp.locus : UNKNOWN_LOCATION)
1463#endif
1464
1465/* In a TARGET_EXPR node. */
1466#define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1467#define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1468#define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1469
1470/* DECL_EXPR accessor. This gives access to the DECL associated with
1471 the given declaration statement. */
1472#define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1473
1474#define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1475
1476/* SWITCH_EXPR accessors. These give access to the condition, body and
1477 original condition type (before any compiler conversions)
1478 of the switch statement, respectively. */
1479#define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1480#define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1481#define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1482
1483/* CASE_LABEL_EXPR accessors. These give access to the high and low values
1484 of a case label, respectively. */
1485#define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1486#define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1487#define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1488
1489/* The operands of a TARGET_MEM_REF. */
1490#define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1491#define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1492#define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1493#define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1494#define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1495#define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1496#define TMR_TAG(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 6))
1497
1498/* The operands of a BIND_EXPR. */
1499#define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1500#define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1501#define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1502
1503/* GOTO_EXPR accessor. This gives access to the label associated with
1504 a goto statement. */
1505#define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1506
1507/* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1508 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1509 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1510 statement. */
1511#define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1512#define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1513#define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1514#define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1515/* Nonzero if we want to create an ASM_INPUT instead of an
1516 ASM_OPERAND with no operands. */
1517#define ASM_INPUT_P(NODE) (TREE_STATIC (NODE))
1518#define ASM_VOLATILE_P(NODE) (TREE_PUBLIC (NODE))
1519
1520/* COND_EXPR accessors. */
1521#define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1522#define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1523#define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1524
1525/* LABEL_EXPR accessor. This gives access to the label associated with
1526 the given label expression. */
1527#define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1528
1529/* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1530 accessors for SSA operands. */
1531
1532/* CATCH_EXPR accessors. */
1533#define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1534#define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1535
1536/* EH_FILTER_EXPR accessors. */
1537#define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1538#define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1539#define EH_FILTER_MUST_NOT_THROW(NODE) TREE_STATIC (EH_FILTER_EXPR_CHECK (NODE))
1540
1541/* OBJ_TYPE_REF accessors. */
1542#define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1543#define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1544#define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1545
1546/* ASSERT_EXPR accessors. */
1547#define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1548#define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1549
1550/* OpenMP directive and clause accessors. */
1551
1552#define OMP_BODY(NODE) \
1553 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1554#define OMP_CLAUSES(NODE) \
1555 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1556
1557#define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1558#define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1559#define OMP_PARALLEL_FN(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 2)
1560#define OMP_PARALLEL_DATA_ARG(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 3)
1561
1562#define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1563#define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1564#define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1565#define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1566#define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1567#define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1568
1569#define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1570#define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1571
1572#define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1573
1574#define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1575#define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1576
1577#define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1578
1579#define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1580
1581#define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1582#define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1583
1584#define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1585#define OMP_CLAUSE_DECL(NODE) \
1586 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1587 OMP_CLAUSE_PRIVATE, \
1588 OMP_CLAUSE_COPYPRIVATE), 0)
1589
1590/* True on an OMP_SECTION statement that was the last lexical member.
1591 This status is meaningful in the implementation of lastprivate. */
1592#define OMP_SECTION_LAST(NODE) \
1593 TREE_PRIVATE (OMP_SECTION_CHECK (NODE))
1594
1595/* True on an OMP_RETURN statement if the return does not require a
1596 thread synchronization via some sort of barrier. The exact barrier
1597 that would otherwise be emitted is dependent on the OMP statement
1598 with which this return is associated. */
1599#define OMP_RETURN_NOWAIT(NODE) \
1600 TREE_PRIVATE (OMP_RETURN_CHECK (NODE))
1601
1602/* True on an OMP_PARALLEL statement if it represents an explicit
1603 combined parallel work-sharing constructs. */
1604#define OMP_PARALLEL_COMBINED(NODE) \
1605 TREE_PRIVATE (OMP_PARALLEL_CHECK (NODE))
1606
1607/* True on a PRIVATE clause if its decl is kept around for debugging
1608 information only and its DECL_VALUE_EXPR is supposed to point
1609 to what it has been remapped to. */
1610#define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1611 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1612
1613/* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1614 decl is present in the chain. */
1615#define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1616 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE))
1617
1618#define OMP_CLAUSE_IF_EXPR(NODE) \
1619 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1620#define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1621 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1622#define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1623 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1624
1625#define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1626 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1627#define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1628 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1629#define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1630 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1631#define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1632 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1633
1634enum omp_clause_schedule_kind
1635{
1636 OMP_CLAUSE_SCHEDULE_STATIC,
1637 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1638 OMP_CLAUSE_SCHEDULE_GUIDED,
1639 OMP_CLAUSE_SCHEDULE_RUNTIME
1640};
1641
1642#define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1643 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1644
1645enum omp_clause_default_kind
1646{
1647 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1648 OMP_CLAUSE_DEFAULT_SHARED,
1649 OMP_CLAUSE_DEFAULT_NONE,
1650 OMP_CLAUSE_DEFAULT_PRIVATE
1651};
1652
1653#define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1654 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1655
1656struct tree_exp GTY(())
1657{
1658 struct tree_common common;
1659 source_locus locus;
1660 int complexity;
1661 tree block;
1662 tree GTY ((special ("tree_exp"),
1663 desc ("TREE_CODE ((tree) &%0)")))
1664 operands[1];
1665};
1666
1667/* SSA_NAME accessors. */
1668
1669/* Returns the variable being referenced. Once released, this is the
1670 only field that can be relied upon. */
1671#define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1672
1673/* Returns the statement which defines this reference. Note that
1674 we use the same field when chaining SSA_NAME nodes together on
1675 the SSA_NAME freelist. */
1676#define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->common.chain
1677
1678/* Returns the SSA version number of this SSA name. Note that in
1679 tree SSA, version numbers are not per variable and may be recycled. */
1680#define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1681
1682/* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1683 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1684 status bit. */
1685#define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1686 SSA_NAME_CHECK (NODE)->common.asm_written_flag
1687
1688/* Nonzero if this SSA_NAME expression is currently on the free list of
1689 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1690 has no meaning for an SSA_NAME. */
1691#define SSA_NAME_IN_FREE_LIST(NODE) \
1692 SSA_NAME_CHECK (NODE)->common.nothrow_flag
1693
1694/* Attributes for SSA_NAMEs for pointer-type variables. */
1695#define SSA_NAME_PTR_INFO(N) \
1696 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1697
1698/* Get the value of this SSA_NAME, if available. */
1699#define SSA_NAME_VALUE(N) \
1700 SSA_NAME_CHECK (N)->ssa_name.value_handle
1701
1702#ifndef _TREE_FLOW_H
1703struct ptr_info_def;
1704#endif
1705
1706
1707
1708/* Immediate use linking structure. This structure is used for maintaining
1709 a doubly linked list of uses of an SSA_NAME. */
1710typedef struct ssa_use_operand_d GTY(())
1711{
1712 struct ssa_use_operand_d* GTY((skip(""))) prev;
1713 struct ssa_use_operand_d* GTY((skip(""))) next;
1714 tree GTY((skip(""))) stmt;
1715 tree *GTY((skip(""))) use;
1716} ssa_use_operand_t;
1717
1718/* Return the immediate_use information for an SSA_NAME. */
1719#define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1720
1721struct tree_ssa_name GTY(())
1722{
1723 struct tree_common common;
1724
1725 /* _DECL wrapped by this SSA name. */
1726 tree var;
1727
1728 /* SSA version number. */
1729 unsigned int version;
1730
1731 /* Pointer attributes used for alias analysis. */
1732 struct ptr_info_def *ptr_info;
1733
1734 /* Value for SSA name used by various passes.
1735
1736 Right now only invariants are allowed to persist beyond a pass in
1737 this field; in the future we will allow VALUE_HANDLEs to persist
1738 as well. */
1739 tree value_handle;
1740
1741 /* Immediate uses list for this SSA_NAME. */
1742 struct ssa_use_operand_d imm_uses;
1743};
1744
1745/* In a PHI_NODE node. */
1746
1747/* These 2 macros should be considered off limits for use by developers. If
1748 you wish to access the use or def fields of a PHI_NODE in the SSA
1749 optimizers, use the accessor macros found in tree-ssa-operands.h.
1750 These two macros are to be used only by those accessor macros, and other
1751 select places where we *absolutely* must take the address of the tree. */
1752
1753#define PHI_RESULT_TREE(NODE) PHI_NODE_CHECK (NODE)->phi.result
1754#define PHI_ARG_DEF_TREE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).def
1755
1756/* PHI_NODEs for each basic block are chained together in a single linked
1757 list. The head of the list is linked from the block annotation, and
1758 the link to the next PHI is in PHI_CHAIN. */
1759#define PHI_CHAIN(NODE) TREE_CHAIN (PHI_NODE_CHECK (NODE))
1760
1761#define PHI_NUM_ARGS(NODE) PHI_NODE_CHECK (NODE)->phi.num_args
1762#define PHI_ARG_CAPACITY(NODE) PHI_NODE_CHECK (NODE)->phi.capacity
1763#define PHI_ARG_ELT(NODE, I) PHI_NODE_ELT_CHECK (NODE, I)
1764#define PHI_ARG_EDGE(NODE, I) (EDGE_PRED (PHI_BB ((NODE)), (I)))
1765#define PHI_BB(NODE) PHI_NODE_CHECK (NODE)->phi.bb
1766#define PHI_ARG_IMM_USE_NODE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).imm_use
1767
1768struct phi_arg_d GTY(())
1769{
1770 /* imm_use MUST be the first element in struct because we do some
1771 pointer arithmetic with it. See phi_arg_index_from_use. */
1772 struct ssa_use_operand_d imm_use;
1773 tree def;
1774};
1775
1776struct tree_phi_node GTY(())
1777{
1778 struct tree_common common;
1779 tree result;
1780 int num_args;
1781 int capacity;
1782
1783 /* Basic block to that the phi node belongs. */
1784 struct basic_block_def *bb;
1785
1786 /* Arguments of the PHI node. These are maintained in the same
1787 order as predecessor edge vector BB->PREDS. */
1788 struct phi_arg_d GTY ((length ("((tree)&%h)->phi.num_args"))) a[1];
1789};
1790
1791#define OMP_CLAUSE_CODE(NODE) \
1792 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1793
1794#define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1795 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1796
1797#define OMP_CLAUSE_CODE(NODE) \
1798 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1799
1800#define OMP_CLAUSE_OPERAND(NODE, I) \
1801 OMP_CLAUSE_ELT_CHECK (NODE, I)
1802
1803struct tree_omp_clause GTY(())
1804{
1805 struct tree_common common;
1806 enum omp_clause_code code;
1807 union omp_clause_subcode {
1808 enum omp_clause_default_kind default_kind;
1809 enum omp_clause_schedule_kind schedule_kind;
1810 enum tree_code reduction_code;
1811 } GTY ((skip)) subcode;
1812 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1813};
1814
1815
1816struct varray_head_tag;
1817
1818/* In a BLOCK node. */
1819#define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1820#define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1821#define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1822/* Note: when changing this, make sure to find the places
1823 that use chainon or nreverse. */
1824#define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1825#define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1826#define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1827
1828/* Nonzero means that this block is prepared to handle exceptions
1829 listed in the BLOCK_VARS slot. */
1830#define BLOCK_HANDLER_BLOCK(NODE) \
1831 (BLOCK_CHECK (NODE)->block.handler_block_flag)
1832
1833/* An index number for this block. These values are not guaranteed to
1834 be unique across functions -- whether or not they are depends on
1835 the debugging output format in use. */
1836#define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1837
1838/* If block reordering splits a lexical block into discontiguous
1839 address ranges, we'll make a copy of the original block.
1840
1841 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1842 In that case, we have one source block that has been replicated
1843 (through inlining or unrolling) into many logical blocks, and that
1844 these logical blocks have different physical variables in them.
1845
1846 In this case, we have one logical block split into several
1847 non-contiguous address ranges. Most debug formats can't actually
1848 represent this idea directly, so we fake it by creating multiple
1849 logical blocks with the same variables in them. However, for those
1850 that do support non-contiguous regions, these allow the original
1851 logical block to be reconstructed, along with the set of address
1852 ranges.
1853
1854 One of the logical block fragments is arbitrarily chosen to be
1855 the ORIGIN. The other fragments will point to the origin via
1856 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1857 be null. The list of fragments will be chained through
1858 BLOCK_FRAGMENT_CHAIN from the origin. */
1859
1860#define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1861#define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1862
1863/* For an inlined function, this gives the location where it was called
1864 from. This is only set in the top level block, which corresponds to the
1865 inlined function scope. This is used in the debug output routines. */
1866
1867#define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1868
1869struct tree_block GTY(())
1870{
1871 struct tree_common common;
1872
1873 unsigned handler_block_flag : 1;
1874 unsigned abstract_flag : 1;
1875 unsigned block_num : 30;
1876
1877 tree vars;
1878 tree subblocks;
1879 tree supercontext;
1880 tree abstract_origin;
1881 tree fragment_origin;
1882 tree fragment_chain;
1883 location_t locus;
1884};
1885
1886/* Define fields and accessors for nodes representing data types. */
1887
1888/* See tree.def for documentation of the use of these fields.
1889 Look at the documentation of the various ..._TYPE tree codes.
1890
1891 Note that the type.values, type.minval, and type.maxval fields are
1892 overloaded and used for different macros in different kinds of types.
1893 Each macro must check to ensure the tree node is of the proper kind of
1894 type. Note also that some of the front-ends also overload these fields,
1895 so they must be checked as well. */
1896
1897#define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
1898#define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
1899#define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
1900#define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode)
1901#define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
1902#define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
1903#define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
1904#define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
1905#define TYPE_ORIG_SIZE_TYPE(NODE) \
1906 (INTEGER_TYPE_CHECK (NODE)->type.values \
1907 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
1908#define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
1909#define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
1910#define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
1911#define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
1912#define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
1913#define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
1914#define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
1915#define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
1916#define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
1917#define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
1918#define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
1919#define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
1920#define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
1921#define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
1922#define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
1923#define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
1924#define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
1925#define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
1926#define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
1927#define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
1928
1929/* For a VECTOR_TYPE node, this describes a different type which is emitted
1930 in the debugging output. We use this to describe a vector as a
1931 structure containing an array. */
1932#define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
1933
1934/* For record and union types, information about this type, as a base type
1935 for itself. */
1936#define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1937
1938/* For non record and union types, used in a language-dependent way. */
1939#define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1940
1941/* The (language-specific) typed-based alias set for this type.
1942 Objects whose TYPE_ALIAS_SETs are different cannot alias each
1943 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
1944 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
1945 type can alias objects of any type. */
1946#define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
1947
1948/* Nonzero iff the typed-based alias set for this type has been
1949 calculated. */
1950#define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
1951
1952/* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
1953 to this type. */
1954#define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
1955
1956/* The alignment necessary for objects of this type.
1957 The value is an int, measured in bits. */
1958#define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
1959
1960/* 1 if the alignment for this type was requested by "aligned" attribute,
1961 0 if it is the default for this type. */
1962#define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
1963
1964/* The alignment for NODE, in bytes. */
1965#define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
1966
1967/* If your language allows you to declare types, and you want debug info
1968 for them, then you need to generate corresponding TYPE_DECL nodes.
1969 These "stub" TYPE_DECL nodes have no name, and simply point at the
1970 type node. You then set the TYPE_STUB_DECL field of the type node
1971 to point back at the TYPE_DECL node. This allows the debug routines
1972 to know that the two nodes represent the same type, so that we only
1973 get one debug info record for them. */
1974#define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
1975
1976/* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
1977 has BLKmode only because it lacks the alignment requirement for
1978 its size. */
1979#define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
1980
1981/* In an INTEGER_TYPE, it means the type represents a size. We use
1982 this both for validity checking and to permit optimizations that
1983 are unsafe for other types. Note that the C `size_t' type should
1984 *not* have this flag set. The `size_t' type is simply a typedef
1985 for an ordinary integer type that happens to be the type of an
1986 expression returned by `sizeof'; `size_t' has no special
1987 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
1988 always actual sizes. */
1989#define TYPE_IS_SIZETYPE(NODE) \
1990 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1991
1992/* In a FUNCTION_TYPE, indicates that the function returns with the stack
1993 pointer depressed. */
1994#define TYPE_RETURNS_STACK_DEPRESSED(NODE) \
1995 (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1996
1997/* Nonzero in a type considered volatile as a whole. */
1998#define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->common.volatile_flag)
1999
2000/* Means this type is const-qualified. */
2001#define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->common.readonly_flag)
2002
2003/* If nonzero, this type is `restrict'-qualified, in the C sense of
2004 the term. */
2005#define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
2006
2007/* There is a TYPE_QUAL value for each type qualifier. They can be
2008 combined by bitwise-or to form the complete set of qualifiers for a
2009 type. */
2010
2011#define TYPE_UNQUALIFIED 0x0
2012#define TYPE_QUAL_CONST 0x1
2013#define TYPE_QUAL_VOLATILE 0x2
2014#define TYPE_QUAL_RESTRICT 0x4
2015
2016/* The set of type qualifiers for this type. */
2017#define TYPE_QUALS(NODE) \
2018 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2019 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2020 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2021
2022/* These flags are available for each language front end to use internally. */
2023#define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2024#define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2025#define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2026#define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2027#define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2028#define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2029#define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2030
2031/* Used to keep track of visited nodes in tree traversals. This is set to
2032 0 by copy_node and make_node. */
2033#define TREE_VISITED(NODE) ((NODE)->common.visited)
2034
2035/* If set in an ARRAY_TYPE, indicates a string type (for languages
2036 that distinguish string from array of char).
2037 If set in a INTEGER_TYPE, indicates a character type. */
2038#define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2039
2040/* If non-NULL, this is an upper bound of the size (in bytes) of an
2041 object of the given ARRAY_TYPE. This allows temporaries to be
2042 allocated. */
2043#define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2044 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2045
2046/* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2047#define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2048 (((unsigned HOST_WIDE_INT) 1) \
2049 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2050
2051/* Set precision to n when we have 2^n sub-parts of the vector. */
2052#define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2053 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2054
2055/* Indicates that objects of this type must be initialized by calling a
2056 function when they are created. */
2057#define TYPE_NEEDS_CONSTRUCTING(NODE) \
2058 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2059
2060/* Indicates that objects of this type (a UNION_TYPE), should be passed
2061 the same way that the first union alternative would be passed. */
2062#define TYPE_TRANSPARENT_UNION(NODE) \
2063 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2064
2065/* For an ARRAY_TYPE, indicates that it is not permitted to
2066 take the address of a component of the type. */
2067#define TYPE_NONALIASED_COMPONENT(NODE) \
2068 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2069
2070/* Indicated that objects of this type should be laid out in as
2071 compact a way as possible. */
2072#define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
2073
2074/* Used by type_contains_placeholder_p to avoid recomputation.
2075 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2076 this field directly. */
2077#define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2078 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2079
2080struct die_struct;
2081
2082struct tree_type GTY(())
2083{
2084 struct tree_common common;
2085 tree values;
2086 tree size;
2087 tree size_unit;
2088 tree attributes;
2089 unsigned int uid;
2090
2091 unsigned int precision : 9;
2092 ENUM_BITFIELD(machine_mode) mode : 7;
2093
2094 unsigned string_flag : 1;
2095 unsigned no_force_blk_flag : 1;
2096 unsigned needs_constructing_flag : 1;
2097 unsigned transparent_union_flag : 1;
2098 unsigned packed_flag : 1;
2099 unsigned restrict_flag : 1;
2100 unsigned contains_placeholder_bits : 2;
2101
2102 unsigned lang_flag_0 : 1;
2103 unsigned lang_flag_1 : 1;
2104 unsigned lang_flag_2 : 1;
2105 unsigned lang_flag_3 : 1;
2106 unsigned lang_flag_4 : 1;
2107 unsigned lang_flag_5 : 1;
2108 unsigned lang_flag_6 : 1;
2109 unsigned user_align : 1;
2110
2111 unsigned int align;
2112 tree pointer_to;
2113 tree reference_to;
2114 union tree_type_symtab {
2115 int GTY ((tag ("0"))) address;
2116 char * GTY ((tag ("1"))) pointer;
2117 struct die_struct * GTY ((tag ("2"))) die;
2118 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2119 descbits ("2"))) symtab;
2120 tree name;
2121 tree minval;
2122 tree maxval;
2123 tree next_variant;
2124 tree main_variant;
2125 tree binfo;
2126 tree context;
2127 HOST_WIDE_INT alias_set;
2128 /* Points to a structure whose details depend on the language in use. */
2129 struct lang_type *lang_specific;
2130};
2131
2132/* Define accessor macros for information about type inheritance
2133 and basetypes.
2134
2135 A "basetype" means a particular usage of a data type for inheritance
2136 in another type. Each such basetype usage has its own "binfo"
2137 object to describe it. The binfo object is a TREE_VEC node.
2138
2139 Inheritance is represented by the binfo nodes allocated for a
2140 given type. For example, given types C and D, such that D is
2141 inherited by C, 3 binfo nodes will be allocated: one for describing
2142 the binfo properties of C, similarly one for D, and one for
2143 describing the binfo properties of D as a base type for C.
2144 Thus, given a pointer to class C, one can get a pointer to the binfo
2145 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2146
2147/* BINFO specific flags. */
2148
2149/* Nonzero means that the derivation chain is via a `virtual' declaration. */
2150#define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->common.static_flag)
2151
2152/* Flags for language dependent use. */
2153#define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2154#define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2155#define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2156#define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2157#define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2158#define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2159#define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2160
2161/* The actual data type node being inherited in this basetype. */
2162#define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2163
2164/* The offset where this basetype appears in its containing type.
2165 BINFO_OFFSET slot holds the offset (in bytes)
2166 from the base of the complete object to the base of the part of the
2167 object that is allocated on behalf of this `type'.
2168 This is always 0 except when there is multiple inheritance. */
2169
2170#define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2171#define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2172
2173/* The virtual function table belonging to this basetype. Virtual
2174 function tables provide a mechanism for run-time method dispatching.
2175 The entries of a virtual function table are language-dependent. */
2176
2177#define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2178
2179/* The virtual functions in the virtual function table. This is
2180 a TREE_LIST that is used as an initial approximation for building
2181 a virtual function table for this basetype. */
2182#define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2183
2184/* A vector of binfos for the direct basetypes inherited by this
2185 basetype.
2186
2187 If this basetype describes type D as inherited in C, and if the
2188 basetypes of D are E and F, then this vector contains binfos for
2189 inheritance of E and F by C. */
2190#define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2191
2192/* The number of basetypes for NODE. */
2193#define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2194
2195/* Accessor macro to get to the Nth base binfo of this binfo. */
2196#define BINFO_BASE_BINFO(NODE,N) \
2197 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2198#define BINFO_BASE_ITERATE(NODE,N,B) \
2199 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2200#define BINFO_BASE_APPEND(NODE,T) \
2201 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2202
2203/* For a BINFO record describing a virtual base class, i.e., one where
2204 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2205 base. The actual contents are language-dependent. In the C++
2206 front-end this field is an INTEGER_CST giving an offset into the
2207 vtable where the offset to the virtual base can be found. */
2208#define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2209
2210/* Indicates the accesses this binfo has to its bases. The values are
2211 access_public_node, access_protected_node or access_private_node.
2212 If this array is not present, public access is implied. */
2213#define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2214
2215#define BINFO_BASE_ACCESS(NODE,N) \
2216 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2217#define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2218 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2219
2220/* The index in the VTT where this subobject's sub-VTT can be found.
2221 NULL_TREE if there is no sub-VTT. */
2222#define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2223
2224/* The index in the VTT where the vptr for this subobject can be
2225 found. NULL_TREE if there is no secondary vptr in the VTT. */
2226#define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2227
2228/* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2229 inheriting this base for non-virtual bases. For virtual bases it
2230 points either to the binfo for which this is a primary binfo, or to
2231 the binfo of the most derived type. */
2232#define BINFO_INHERITANCE_CHAIN(NODE) \
2233 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2234
2235struct tree_binfo GTY (())
2236{
2237 struct tree_common common;
2238
2239 tree offset;
2240 tree vtable;
2241 tree virtuals;
2242 tree vptr_field;
2243 VEC(tree,gc) *base_accesses;
2244 tree inheritance;
2245
2246 tree vtt_subvtt;
2247 tree vtt_vptr;
2248
2249 VEC(tree,none) base_binfos;
2250};
2251
2252
2253/* Define fields and accessors for nodes representing declared names. */
2254
2255/* Nonzero if DECL represents a variable for the SSA passes. */
2256#define SSA_VAR_P(DECL) \
2257 (TREE_CODE (DECL) == VAR_DECL \
2258 || TREE_CODE (DECL) == PARM_DECL \
2259 || TREE_CODE (DECL) == RESULT_DECL \
2260 || MTAG_P (DECL) \
2261 || (TREE_CODE (DECL) == SSA_NAME \
2262 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2263 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2264 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL \
2265 || MTAG_P (SSA_NAME_VAR (DECL)))))
2266
2267
2268
2269
2270/* Enumerate visibility settings. */
2271#ifndef SYMBOL_VISIBILITY_DEFINED
2272#define SYMBOL_VISIBILITY_DEFINED
2273enum symbol_visibility
2274{
2275 VISIBILITY_DEFAULT,
2276 VISIBILITY_PROTECTED,
2277 VISIBILITY_HIDDEN,
2278 VISIBILITY_INTERNAL
2279};
2280#endif
2281
2282struct function;
2283
2284
2285/* This is the name of the object as written by the user.
2286 It is an IDENTIFIER_NODE. */
2287#define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2288
2289/* Every ..._DECL node gets a unique number. */
2290#define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2291
2292/* These two fields describe where in the source code the declaration
2293 was. If the declaration appears in several places (as for a C
2294 function that is declared first and then defined later), this
2295 information should refer to the definition. */
2296#define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2297#define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2298#define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2299#ifdef USE_MAPPED_LOCATION
2300#define DECL_IS_BUILTIN(DECL) \
2301 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2302#else
2303#define DECL_IS_BUILTIN(DECL) (DECL_SOURCE_LINE(DECL) == 0)
2304#endif
2305
2306/* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2307 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2308 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2309 points to either the FUNCTION_DECL for the containing function,
2310 the RECORD_TYPE or UNION_TYPE for the containing type, or
2311 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2312 scope". */
2313#define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2314#define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2315struct tree_decl_minimal GTY(())
2316{
2317 struct tree_common common;
2318 location_t locus;
2319 unsigned int uid;
2320 tree name;
2321 tree context;
2322};
2323
2324/* When computing aliasing information, we represent the memory pointed-to
2325 by pointers with artificial variables called "memory tags" (MT). There
2326 are two kinds of tags, namely symbol and name:
2327
2328 Symbol tags (SMT) are used in flow-insensitive alias analysis, they
2329 represent all the pointed-to locations and variables pointed-to by
2330 the same pointer symbol. Usually, this set is computed using
2331 type-based analysis (i.e., alias set classes), but this may not
2332 always be the case.
2333
2334 Name tags (NMT) are used in flow-sensitive points-to alias
2335 analysis, they represent the variables and memory locations
2336 pointed-to by a specific SSA_NAME pointer.
2337
2338 In general, given a pointer P with a symbol tag SMT, the alias set
2339 of SMT should be the union of all the alias sets of the NMTs of
2340 every SSA_NAME for P. */
2341struct tree_memory_tag GTY(())
2342{
2343 struct tree_decl_minimal common;
2344 unsigned int is_global:1;
2345 unsigned int is_used_alone:1;
2346 unsigned int old_used_alone:1;
2347};
2348
2349#define MTAG_GLOBAL(NODE) (TREE_MEMORY_TAG_CHECK (NODE)->mtag.is_global)
2350
2351/* This flag is true if a SMT is used as the V_MAY_DEF or VUSE operand
2352 directly, because the access had all of the SMT's aliases pruned
2353 from it. */
2354#define SMT_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.is_used_alone)
2355
2356/* This flag is used to temporarily store the old value of the used alone
2357 flag when updating so we know whether to mark the symbol for
2358 renaming. */
2359#define SMT_OLD_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.old_used_alone)
2360
2361struct tree_struct_field_tag GTY(())
2362{
2363 struct tree_memory_tag common;
2364
2365 /* Parent variable. */
2366 tree parent_var;
2367
2368 /* Offset inside structure. */
2369 unsigned HOST_WIDE_INT offset;
2370
2371 /* Size of the field. */
2372 unsigned HOST_WIDE_INT size;
2373
2374};
2375#define SFT_PARENT_VAR(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.parent_var)
2376#define SFT_OFFSET(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.offset)
2377#define SFT_SIZE(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.size)
2378
2379/* For any sort of a ..._DECL node, this points to the original (abstract)
2380 decl node which this decl is an instance of, or else it is NULL indicating
2381 that this decl is not an instance of some other decl. For example,
2382 in a nested declaration of an inline function, this points back to the
2383 definition. */
2384#define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2385
2386/* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2387 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2388#define DECL_ORIGIN(NODE) \
2389 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2390
2391/* Nonzero for any sort of ..._DECL node means this decl node represents an
2392 inline instance of some original (abstract) decl from an inline function;
2393 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2394 nodes can also have their abstract origin set to themselves. */
2395#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2396 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2397
2398/* In a DECL this is the field where attributes are stored. */
2399#define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2400
2401/* For a FUNCTION_DECL, holds the tree of BINDINGs.
2402 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2403 For a VAR_DECL, holds the initial value.
2404 For a PARM_DECL, not used--default
2405 values for parameters are encoded in the type of the function,
2406 not in the PARM_DECL slot.
2407 For a FIELD_DECL, this is used for enumeration values and the C
2408 frontend uses it for temporarily storing bitwidth of bitfields.
2409
2410 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2411#define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2412
2413/* Holds the size of the datum, in bits, as a tree expression.
2414 Need not be constant. */
2415#define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2416/* Likewise for the size in bytes. */
2417#define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2418/* Holds the alignment required for the datum, in bits. */
2419#define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.u1.a.align)
2420/* The alignment of NODE, in bytes. */
2421#define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2422/* For FIELD_DECLs, off_align holds the number of low-order bits of
2423 DECL_FIELD_OFFSET which are known to be always zero.
2424 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2425 has. */
2426#define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.user_align)
2427/* Holds the machine mode corresponding to the declaration of a variable or
2428 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2429 FIELD_DECL. */
2430#define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2431
2432/* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2433 operation it is. Note, however, that this field is overloaded, with
2434 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2435 checked before any access to the former. */
2436#define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_common.u1.f)
2437#define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2438 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2439
2440/* Nonzero for a given ..._DECL node means that the name of this node should
2441 be ignored for symbolic debug purposes. */
2442#define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2443
2444/* Nonzero for a given ..._DECL node means that this node represents an
2445 "abstract instance" of the given declaration (e.g. in the original
2446 declaration of an inline function). When generating symbolic debugging
2447 information, we mustn't try to generate any address information for nodes
2448 marked as "abstract instances" because we don't actually generate
2449 any code or allocate any data space for such instances. */
2450#define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2451
2452/* Language-specific decl information. */
2453#define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2454
2455/* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2456 do not allocate storage, and refer to a definition elsewhere. Note that
2457 this does not necessarily imply the entity represented by NODE
2458 has no program source-level definition in this translation unit. For
2459 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2460 DECL_EXTERNAL may be true simultaneously; that can be the case for
2461 a C99 "extern inline" function. */
2462#define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_2)
2463
2464/* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
2465 initializations. */
2466#define DEFAULT_INIT_PRIORITY 65535
2467#define MAX_INIT_PRIORITY 65535
2468#define MAX_RESERVED_INIT_PRIORITY 100
2469
2470
2471/* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2472 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2473
2474 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2475
2476 Also set in some languages for variables, etc., outside the normal
2477 lexical scope, such as class instance variables. */
2478#define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2479
2480/* Used in VAR_DECLs to indicate that the variable is a vtable.
2481 Used in FIELD_DECLs for vtable pointers.
2482 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2483#define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2484
2485/* Used to indicate that this DECL represents a compiler-generated entity. */
2486#define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2487
2488/* Additional flags for language-specific uses. */
2489#define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2490#define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2491#define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2492#define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2493#define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2494#define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2495#define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2496#define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2497
2498/* Used to indicate an alias set for the memory pointed to by this
2499 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2500 pointer (or reference) type. */
2501#define DECL_POINTER_ALIAS_SET(NODE) \
2502 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2503
2504/* Nonzero if an alias set has been assigned to this declaration. */
2505#define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2506 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2507
2508/* Nonzero for a decl which is at file scope. */
2509#define DECL_FILE_SCOPE_P(EXP) \
2510 (! DECL_CONTEXT (EXP) \
2511 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2512
2513/* Nonzero for a decl that is decorated using attribute used.
2514 This indicates compiler tools that this decl needs to be preserved. */
2515#define DECL_PRESERVE_P(DECL) \
2516 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2517
2518/* For function local variables of COMPLEX type, indicates that the
2519 variable is not aliased, and that all modifications to the variable
2520 have been adjusted so that they are killing assignments. Thus the
2521 variable may now be treated as a GIMPLE register, and use real
2522 instead of virtual ops in SSA form. */
2523#define DECL_COMPLEX_GIMPLE_REG_P(DECL) \
2524 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2525
2526/* This is true if DECL is call clobbered in the current function.
2527 The result of this flag should always be the same as
2528 bitmap_bit_p (call_clobbered_vars, DECL_UID (decl)). */
2529#define DECL_CALL_CLOBBERED(DECL) \
2530 DECL_COMMON_CHECK (DECL)->decl_common.call_clobbered_flag
2531
2532struct tree_decl_common GTY(())
2533{
2534 struct tree_decl_minimal common;
2535 tree size;
2536
2537 ENUM_BITFIELD(machine_mode) mode : 8;
2538
2539 unsigned nonlocal_flag : 1;
2540 unsigned virtual_flag : 1;
2541 unsigned ignored_flag : 1;
2542 unsigned abstract_flag : 1;
2543 unsigned artificial_flag : 1;
2544 unsigned user_align : 1;
2545 unsigned preserve_flag: 1;
2546 unsigned debug_expr_is_from : 1;
2547
2548 unsigned lang_flag_0 : 1;
2549 unsigned lang_flag_1 : 1;
2550 unsigned lang_flag_2 : 1;
2551 unsigned lang_flag_3 : 1;
2552 unsigned lang_flag_4 : 1;
2553 unsigned lang_flag_5 : 1;
2554 unsigned lang_flag_6 : 1;
2555 unsigned lang_flag_7 : 1;
2556
2557 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2558 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2559 unsigned decl_flag_0 : 1;
2560 /* In FIELD_DECL, this is DECL_PACKED. */
2561 unsigned decl_flag_1 : 1;
2562 /* In FIELD_DECL, this is DECL_BIT_FIELD
2563 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2564 In TYPE_DECL, this is TYPE_DECL_SUPRESS_DEBUG. */
2565 unsigned decl_flag_2 : 1;
2566 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2567 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR. */
2568 unsigned decl_flag_3 : 1;
2569 /* Logically, these two would go in a theoretical base shared by var and
2570 parm decl. */
2571 unsigned gimple_reg_flag : 1;
2572 unsigned call_clobbered_flag : 1;
2573
2574 union tree_decl_u1 {
2575 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
2576 DECL_FUNCTION_CODE. */
2577 enum built_in_function f;
2578 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this
2579 is used by language-dependent code. */
2580 HOST_WIDE_INT i;
2581 /* DECL_ALIGN and DECL_OFFSET_ALIGN. (These are not used for
2582 FUNCTION_DECLs). */
2583 struct tree_decl_u1_a {
2584 unsigned int align : 24;
2585 unsigned int off_align : 8;
2586 } a;
2587 } GTY ((skip)) u1;
2588
2589 tree size_unit;
2590 tree initial;
2591 tree attributes;
2592 tree abstract_origin;
2593
2594 HOST_WIDE_INT pointer_alias_set;
2595 /* Points to a structure whose details depend on the language in use. */
2596 struct lang_decl *lang_specific;
2597};
2598
2599extern tree decl_value_expr_lookup (tree);
2600extern void decl_value_expr_insert (tree, tree);
2601
2602/* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2603 if transformations have made this more complicated than evaluating the
2604 decl itself. This should only be used for debugging; once this field has
2605 been set, the decl itself may not legitimately appear in the function. */
2606#define DECL_HAS_VALUE_EXPR_P(NODE) \
2607 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_3)
2608#define DECL_VALUE_EXPR(NODE) \
2609 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2610#define SET_DECL_VALUE_EXPR(NODE, VAL) \
2611 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2612
2613/* Holds the RTL expression for the value of a variable or function.
2614 This value can be evaluated lazily for functions, variables with
2615 static storage duration, and labels. */
2616#define DECL_RTL(NODE) \
2617 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2618 ? (NODE)->decl_with_rtl.rtl \
2619 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2620
2621/* Set the DECL_RTL for NODE to RTL. */
2622#define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2623
2624/* Returns nonzero if NODE is a tree node that can contain RTL. */
2625#define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2626
2627/* Returns nonzero if the DECL_RTL for NODE has already been set. */
2628#define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2629
2630/* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2631 NODE1, it will not be set for NODE2; this is a lazy copy. */
2632#define COPY_DECL_RTL(NODE1, NODE2) \
2633 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2634
2635/* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2636#define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2637
2638/* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2639#define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2640
2641struct tree_decl_with_rtl GTY(())
2642{
2643 struct tree_decl_common common;
2644 rtx rtl;
2645};
2646
2647/* In a FIELD_DECL, this is the field position, counting in bytes, of the
2648 DECL_OFFSET_ALIGN-bit-sized word containing the bit closest to the beginning
2649 of the structure. */
2650#define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2651
2652/* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2653 field from DECL_FIELD_OFFSET. This field may be nonzero even for fields
2654 that are not bit fields (since DECL_OFFSET_ALIGN may be larger than the
2655 natural alignment of the field's type). */
2656#define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2657
2658/* In a FIELD_DECL, this indicates whether the field was a bit-field and
2659 if so, the type that was originally specified for it.
2660 TREE_TYPE may have been modified (in finish_struct). */
2661#define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2662
2663/* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2664 if nonzero, indicates that the field occupies the type. */
2665#define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2666
2667/* For FIELD_DECLs, off_align holds the number of low-order bits of
2668 DECL_FIELD_OFFSET which are known to be always zero.
2669 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2670 has. */
2671#define DECL_OFFSET_ALIGN(NODE) \
2672 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align)
2673
2674/* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2675#define SET_DECL_OFFSET_ALIGN(NODE, X) \
2676 (FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align = exact_log2 ((X) & -(X)))
2677/* 1 if the alignment for this type was requested by "aligned" attribute,
2678 0 if it is the default for this type. */
2679
2680/* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2681 which this FIELD_DECL is defined. This information is needed when
2682 writing debugging information about vfield and vbase decls for C++. */
2683#define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2684
2685/* In a FIELD_DECL, indicates this field should be bit-packed. */
2686#define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2687
2688/* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2689 specially. */
2690#define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2691
2692/* Used in a FIELD_DECL to indicate that we cannot form the address of
2693 this component. */
2694#define DECL_NONADDRESSABLE_P(NODE) \
2695 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_3)
2696
2697struct tree_field_decl GTY(())
2698{
2699 struct tree_decl_common common;
2700
2701 tree offset;
2702 tree bit_field_type;
2703 tree qualifier;
2704 tree bit_offset;
2705 tree fcontext;
2706
2707};
2708
2709/* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2710 dense, unique within any one function, and may be used to index arrays.
2711 If the value is -1, then no UID has been assigned. */
2712#define LABEL_DECL_UID(NODE) \
2713 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2714
2715/* In LABEL_DECL nodes, nonzero means that an error message about
2716 jumping into such a binding contour has been printed for this label. */
2717#define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2718
2719struct tree_label_decl GTY(())
2720{
2721 struct tree_decl_with_rtl common;
2722 /* Java's verifier has some need to store information about labels,
2723 and was using fields that no longer exist on labels.
2724 Once the verifier doesn't need these anymore, they should be removed. */
2725 tree java_field_1;
2726 tree java_field_2;
2727 tree java_field_3;
2728 unsigned int java_field_4;
2729
2730};
2731
2732struct tree_result_decl GTY(())
2733{
2734 struct tree_decl_with_rtl common;
2735};
2736
2737struct tree_const_decl GTY(())
2738{
2739 struct tree_decl_with_rtl common;
2740};
2741
2742/* For a PARM_DECL, records the data type used to pass the argument,
2743 which may be different from the type seen in the program. */
2744#define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2745
2746/* For PARM_DECL, holds an RTL for the stack slot or register
2747 where the data was actually passed. */
2748#define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2749
2750struct tree_parm_decl GTY(())
2751{
2752 struct tree_decl_with_rtl common;
2753 rtx incoming_rtl;
2754};
2755
2756
2757/* Nonzero in a decl means that the gimplifier has seen (or placed)
2758 this variable in a BIND_EXPR. */
2759#define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2760 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2761
2762/* Used to indicate that the linkage status of this DECL is not yet known,
2763 so it should not be output now. */
2764#define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2765
2766/* Nonzero for a given ..._DECL node means that no warnings should be
2767 generated just because this node is unused. */
2768#define DECL_IN_SYSTEM_HEADER(NODE) \
2769 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.in_system_header_flag)
2770
2771 /* Used to indicate that this DECL has weak linkage. */
2772#define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2773
2774/* Internal to the gimplifier. Indicates that the value is a formal
2775 temporary controlled by the gimplifier. */
2776#define DECL_GIMPLE_FORMAL_TEMP_P(DECL) \
2777 DECL_WITH_VIS_CHECK (DECL)->decl_with_vis.gimple_formal_temp
2778
2779/* Used to indicate that the DECL is a dllimport. */
2780#define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2781
2782/* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2783 based on a variable with a restrict qualified type. If it is,
2784 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2785 it is based. */
2786
2787#define DECL_BASED_ON_RESTRICT_P(NODE) \
2788 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2789#define DECL_GET_RESTRICT_BASE(NODE) \
2790 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2791#define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2792 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2793
2794extern tree decl_restrict_base_lookup (tree);
2795extern void decl_restrict_base_insert (tree, tree);
2796
2797/* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2798 not be put out unless it is needed in this translation unit.
2799 Entities like this are shared across translation units (like weak
2800 entities), but are guaranteed to be generated by any translation
2801 unit that needs them, and therefore need not be put out anywhere
2802 where they are not needed. DECL_COMDAT is just a hint to the
2803 back-end; it is up to front-ends which set this flag to ensure
2804 that there will never be any harm, other than bloat, in putting out
2805 something which is DECL_COMDAT. */
2806#define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2807
2808/* A replaceable function is one which may be replaced at link-time
2809 with an entirely different definition, provided that the
2810 replacement has the same type. For example, functions declared
2811 with __attribute__((weak)) on most systems are replaceable.
2812
2813 COMDAT functions are not replaceable, since all definitions of the
2814 function must be equivalent. It is important that COMDAT functions
2815 not be treated as replaceable so that use of C++ template
2816 instantiations is not penalized.
2817
2818 For example, DECL_REPLACEABLE is used to determine whether or not a
2819 function (including a template instantiation) which is not
2820 explicitly declared "inline" can be inlined. If the function is
2821 DECL_REPLACEABLE then it is not safe to do the inlining, since the
2822 implementation chosen at link-time may be different. However, a
2823 function that is not DECL_REPLACEABLE can be inlined, since all
2824 versions of the function will be functionally identical. */
2825#define DECL_REPLACEABLE_P(NODE) \
2826 (!DECL_COMDAT (NODE) && !targetm.binds_local_p (NODE))
2827
2828/* The name of the object as the assembler will see it (but before any
2829 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2830 as DECL_NAME. It is an IDENTIFIER_NODE. */
2831#define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2832
2833/* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2834 This is true of all DECL nodes except FIELD_DECL. */
2835#define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2836 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2837
2838/* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2839 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2840 yet. */
2841#define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2842 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2843
2844/* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2845#define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2846 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2847
2848/* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2849 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2850 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2851 semantics of using this macro, are different than saying:
2852
2853 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2854
2855 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2856
2857#define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2858 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2859 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2860 DECL_ASSEMBLER_NAME (DECL1)) \
2861 : (void) 0)
2862
2863/* Records the section name in a section attribute. Used to pass
2864 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2865#define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2866
2867/* Value of the decls's visibility attribute */
2868#define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2869
2870/* Nonzero means that the decl had its visibility specified rather than
2871 being inferred. */
2872#define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2873
2874/* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2875 multiple translation units should be merged. */
2876#define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2877
2878struct tree_decl_with_vis GTY(())
2879{
2880 struct tree_decl_with_rtl common;
2881 tree assembler_name;
2882 tree section_name;
2883
2884 /* Belong to VAR_DECL exclusively. */
2885 unsigned defer_output:1;
2886 unsigned hard_register:1;
2887 unsigned thread_local:1;
2888 unsigned common_flag:1;
2889 unsigned in_text_section : 1;
2890 unsigned gimple_formal_temp : 1;
2891 unsigned dllimport_flag : 1;
2892 unsigned based_on_restrict_p : 1;
2893 /* Used by C++. Might become a generic decl flag. */
2894 unsigned shadowed_for_var_p : 1;
2895
2896 /* Don't belong to VAR_DECL exclusively. */
2897 unsigned in_system_header_flag : 1;
2898 unsigned weak_flag:1;
2899 unsigned seen_in_bind_expr : 1;
2900 unsigned comdat_flag : 1;
2901 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2902 unsigned visibility_specified : 1;
2903 /* Belong to FUNCTION_DECL exclusively. */
2904 unsigned one_only : 1;
2905 unsigned init_priority_p:1;
2906
2907 /* Belongs to VAR_DECL exclusively. */
2908 ENUM_BITFIELD(tls_model) tls_model : 3;
2909 /* 11 unused bits. */
2910};
2911
2912/* In a VAR_DECL that's static,
2913 nonzero if the space is in the text section. */
2914#define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2915
2916/* Nonzero for a given ..._DECL node means that this node should be
2917 put in .common, if possible. If a DECL_INITIAL is given, and it
2918 is not error_mark_node, then the decl cannot be put in .common. */
2919#define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2920
2921/* In a VAR_DECL, nonzero if the decl is a register variable with
2922 an explicit asm specification. */
2923#define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2924
2925extern tree decl_debug_expr_lookup (tree);
2926extern void decl_debug_expr_insert (tree, tree);
2927/* For VAR_DECL, this is set to either an expression that it was split
2928 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2929 subexpressions that it was split into. */
2930#define DECL_DEBUG_EXPR(NODE) \
2931 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2932
2933#define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2934 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2935
2936
2937extern unsigned short decl_init_priority_lookup (tree);
2938extern void decl_init_priority_insert (tree, unsigned short);
2939
2940/* In a non-local VAR_DECL with static storage duration, this is the
2941 initialization priority. If this value is zero, the NODE will be
2942 initialized at the DEFAULT_INIT_PRIORITY. Only used by C++ FE*/
2943
2944#define DECL_HAS_INIT_PRIORITY_P(NODE) \
2945 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
2946#define DECL_INIT_PRIORITY(NODE) \
2947 (decl_init_priority_lookup (VAR_DECL_CHECK (NODE)))
2948#define SET_DECL_INIT_PRIORITY(NODE, VAL) \
2949 (decl_init_priority_insert (VAR_DECL_CHECK (NODE), VAL))
2950
2951/* In a VAR_DECL, the model to use if the data should be allocated from
2952 thread-local storage. */
2953#define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
2954
2955/* In a VAR_DECL, nonzero if the data should be allocated from
2956 thread-local storage. */
2957#define DECL_THREAD_LOCAL_P(NODE) \
2958 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model != TLS_MODEL_NONE)
2959
2960struct tree_var_decl GTY(())
2961{
2962 struct tree_decl_with_vis common;
2963};
2964
2965
2966/* This field is used to reference anything in decl.result and is meant only
2967 for use by the garbage collector. */
2968#define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
2969
2970/* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
2971 Before the struct containing the FUNCTION_DECL is laid out,
2972 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
2973 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
2974 function. When the class is laid out, this pointer is changed
2975 to an INTEGER_CST node which is suitable for use as an index
2976 into the virtual function table.
2977 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
2978#define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
2979
2980struct tree_decl_non_common GTY(())
2981
2982{
2983 struct tree_decl_with_vis common;
2984 /* C++ uses this in namespaces. */
2985 tree saved_tree;
2986 /* C++ uses this in templates. */
2987 tree arguments;
2988 /* Almost all FE's use this. */
2989 tree result;
2990 /* C++ uses this in namespaces. */
2991 tree vindex;
2992};
2993
2994/* In FUNCTION_DECL, holds the decl for the return value. */
2995#define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
2996
2997/* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
2998#define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
2999
3000/* In a FUNCTION_DECL, the saved representation of the body of the
3001 entire function. */
3002#define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
3003
3004/* Nonzero in a FUNCTION_DECL means this function should be treated
3005 as if it were a malloc, meaning it returns a pointer that is
3006 not an alias. */
3007#define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
3008
3009/* Nonzero in a FUNCTION_DECL means this function may return more
3010 than once. */
3011#define DECL_IS_RETURNS_TWICE(NODE) \
3012 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
3013
3014/* Nonzero in a FUNCTION_DECL means this function should be treated
3015 as "pure" function (like const function, but may read global memory). */
3016#define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
3017
3018/* Nonzero in a FUNCTION_DECL means this function should be treated
3019 as "novops" function (function that does not read global memory,
3020 but may have arbitrary side effects). */
3021#define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
3022
3023/* Used in FUNCTION_DECLs to indicate that they should be run automatically
3024 at the beginning or end of execution. */
3025#define DECL_STATIC_CONSTRUCTOR(NODE) \
3026 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
3027
3028#define DECL_STATIC_DESTRUCTOR(NODE) \
3029(FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
3030
3031/* Used in FUNCTION_DECLs to indicate that function entry and exit should
3032 be instrumented with calls to support routines. */
3033#define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
3034 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
3035
3036/* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3037 disabled in this function. */
3038#define DECL_NO_LIMIT_STACK(NODE) \
3039 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3040
3041/* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3042 static chain is not needed. */
3043#define DECL_NO_STATIC_CHAIN(NODE) \
3044 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3045
3046/* Nonzero for a decl that cgraph has decided should be inlined into
3047 at least one call site. It is not meaningful to look at this
3048 directly; always use cgraph_function_possibly_inlined_p. */
3049#define DECL_POSSIBLY_INLINED(DECL) \
3050 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3051
3052/* Nonzero in a FUNCTION_DECL means this function can be substituted
3053 where it is called. */
3054#define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.inline_flag)
3055
3056/* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3057 such as via the `inline' keyword in C/C++. This flag controls the linkage
3058 semantics of 'inline'; whether or not the function is inlined is
3059 controlled by DECL_INLINE. */
3060#define DECL_DECLARED_INLINE_P(NODE) \
3061 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3062
3063/* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3064 that describes the status of this function. */
3065#define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3066
3067/* In a FUNCTION_DECL, nonzero means a built in function. */
3068#define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3069
3070/* For a builtin function, identify which part of the compiler defined it. */
3071#define DECL_BUILT_IN_CLASS(NODE) \
3072 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3073
3074/* In FUNCTION_DECL, a chain of ..._DECL nodes.
3075 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3076 uses. */
3077#define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3078#define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3079
3080/* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3081 arguments/result/saved_tree fields by front ends. It was either inherit
3082 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3083 which seemed a bit strange. */
3084
3085struct tree_function_decl GTY(())
3086{
3087 struct tree_decl_non_common common;
3088
3089 unsigned static_ctor_flag : 1;
3090 unsigned static_dtor_flag : 1;
3091 unsigned uninlinable : 1;
3092 unsigned possibly_inlined : 1;
3093 unsigned novops_flag : 1;
3094 unsigned returns_twice_flag : 1;
3095 unsigned malloc_flag : 1;
3096 unsigned pure_flag : 1;
3097
3098 unsigned declared_inline_flag : 1;
3099 unsigned regdecl_flag : 1;
3100 unsigned inline_flag : 1;
3101 unsigned no_instrument_function_entry_exit : 1;
3102 unsigned no_limit_stack : 1;
3103 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3104
3105 struct function *f;
3106};
3107
3108/* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3109#define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3110
3111/* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3112 into stabs. Instead it will generate cross reference ('x') of names.
3113 This uses the same flag as DECL_EXTERNAL. */
3114#define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3115 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_2)
3116
3117struct tree_type_decl GTY(())
3118{
3119 struct tree_decl_non_common common;
3120
3121};
3122
3123/* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3124 To reduce overhead, the nodes containing the statements are not trees.
3125 This avoids the overhead of tree_common on all linked list elements.
3126
3127 Use the interface in tree-iterator.h to access this node. */
3128
3129#define STATEMENT_LIST_HEAD(NODE) \
3130 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3131#define STATEMENT_LIST_TAIL(NODE) \
3132 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3133
3134struct tree_statement_list_node
3135 GTY ((chain_next ("%h.next"), chain_prev ("%h.prev")))
3136{
3137 struct tree_statement_list_node *prev;
3138 struct tree_statement_list_node *next;
3139 tree stmt;
3140};
3141
3142struct tree_statement_list
3143 GTY(())
3144{
3145 struct tree_common common;
3146 struct tree_statement_list_node *head;
3147 struct tree_statement_list_node *tail;
3148};
3149
3150#define VALUE_HANDLE_ID(NODE) \
3151 (VALUE_HANDLE_CHECK (NODE)->value_handle.id)
3152
3153#define VALUE_HANDLE_EXPR_SET(NODE) \
3154 (VALUE_HANDLE_CHECK (NODE)->value_handle.expr_set)
3155
3156#define VALUE_HANDLE_VUSES(NODE) \
3157 (VALUE_HANDLE_CHECK (NODE)->value_handle.vuses)
3158
3159/* Defined and used in tree-ssa-pre.c. */
3160struct value_set;
3161
3162struct tree_value_handle GTY(())
3163{
3164 struct tree_common common;
3165
3166 /* The set of expressions represented by this handle. */
3167 struct value_set * GTY ((skip)) expr_set;
3168
3169 /* Unique ID for this value handle. IDs are handed out in a
3170 conveniently dense form starting at 0, so that we can make
3171 bitmaps of value handles. */
3172 unsigned int id;
3173
3174 /* Set of virtual uses represented by this handle. */
3175 VEC (tree, gc) *vuses;
3176};
3177
3178/* Define the overall contents of a tree node.
3179 It may be any of the structures declared above
3180 for various types of node. */
3181
3182union tree_node GTY ((ptr_alias (union lang_tree_node),
3183 desc ("tree_node_structure (&%h)")))
3184{
3185 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3186 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3187 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3188 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3189 struct tree_string GTY ((tag ("TS_STRING"))) string;
3190 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3191 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3192 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3193 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3194 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3195 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3196 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3197 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3198 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3199 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3200 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3201 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3202 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3203 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3204 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3205 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3206 struct tree_list GTY ((tag ("TS_LIST"))) list;
3207 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3208 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3209 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3210 struct tree_phi_node GTY ((tag ("TS_PHI_NODE"))) phi;
3211 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3212 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3213 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3214 struct tree_value_handle GTY ((tag ("TS_VALUE_HANDLE"))) value_handle;
3215 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3216 struct tree_memory_tag GTY ((tag ("TS_MEMORY_TAG"))) mtag;
3217 struct tree_struct_field_tag GTY ((tag ("TS_STRUCT_FIELD_TAG"))) sft;
3218 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3219};
3220
3221/* Standard named or nameless data types of the C compiler. */
3222
3223enum tree_index
3224{
3225 TI_ERROR_MARK,
3226 TI_INTQI_TYPE,
3227 TI_INTHI_TYPE,
3228 TI_INTSI_TYPE,
3229 TI_INTDI_TYPE,
3230 TI_INTTI_TYPE,
3231
3232 TI_UINTQI_TYPE,
3233 TI_UINTHI_TYPE,
3234 TI_UINTSI_TYPE,
3235 TI_UINTDI_TYPE,
3236 TI_UINTTI_TYPE,
3237
3238 TI_INTEGER_ZERO,
3239 TI_INTEGER_ONE,
3240 TI_INTEGER_MINUS_ONE,
3241 TI_NULL_POINTER,
3242
3243 TI_SIZE_ZERO,
3244 TI_SIZE_ONE,
3245
3246 TI_BITSIZE_ZERO,
3247 TI_BITSIZE_ONE,
3248 TI_BITSIZE_UNIT,
3249
3250 TI_PUBLIC,
3251 TI_PROTECTED,
3252 TI_PRIVATE,
3253
3254 TI_BOOLEAN_FALSE,
3255 TI_BOOLEAN_TRUE,
3256
3257 TI_COMPLEX_INTEGER_TYPE,
3258 TI_COMPLEX_FLOAT_TYPE,
3259 TI_COMPLEX_DOUBLE_TYPE,
3260 TI_COMPLEX_LONG_DOUBLE_TYPE,
3261
3262 TI_FLOAT_TYPE,
3263 TI_DOUBLE_TYPE,
3264 TI_LONG_DOUBLE_TYPE,
3265
3266 TI_FLOAT_PTR_TYPE,
3267 TI_DOUBLE_PTR_TYPE,
3268 TI_LONG_DOUBLE_PTR_TYPE,
3269 TI_INTEGER_PTR_TYPE,
3270
3271 TI_VOID_TYPE,
3272 TI_PTR_TYPE,
3273 TI_CONST_PTR_TYPE,
3274 TI_SIZE_TYPE,
3275 TI_PID_TYPE,
3276 TI_PTRDIFF_TYPE,
3277 TI_VA_LIST_TYPE,
3278 TI_VA_LIST_GPR_COUNTER_FIELD,
3279 TI_VA_LIST_FPR_COUNTER_FIELD,
3280 TI_BOOLEAN_TYPE,
3281 TI_FILEPTR_TYPE,
3282
3283 TI_DFLOAT32_TYPE,
3284 TI_DFLOAT64_TYPE,
3285 TI_DFLOAT128_TYPE,
3286 TI_DFLOAT32_PTR_TYPE,
3287 TI_DFLOAT64_PTR_TYPE,
3288 TI_DFLOAT128_PTR_TYPE,
3289
3290 TI_VOID_LIST_NODE,
3291
3292 TI_MAIN_IDENTIFIER,
3293
3294 TI_MAX
3295};
3296
3297extern GTY(()) tree global_trees[TI_MAX];
3298
3299#define error_mark_node global_trees[TI_ERROR_MARK]
3300
3301#define intQI_type_node global_trees[TI_INTQI_TYPE]
3302#define intHI_type_node global_trees[TI_INTHI_TYPE]
3303#define intSI_type_node global_trees[TI_INTSI_TYPE]
3304#define intDI_type_node global_trees[TI_INTDI_TYPE]
3305#define intTI_type_node global_trees[TI_INTTI_TYPE]
3306
3307#define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3308#define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3309#define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3310#define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3311#define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3312
3313#define integer_zero_node global_trees[TI_INTEGER_ZERO]
3314#define integer_one_node global_trees[TI_INTEGER_ONE]
3315#define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3316#define size_zero_node global_trees[TI_SIZE_ZERO]
3317#define size_one_node global_trees[TI_SIZE_ONE]
3318#define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3319#define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3320#define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3321
3322/* Base access nodes. */
3323#define access_public_node global_trees[TI_PUBLIC]
3324#define access_protected_node global_trees[TI_PROTECTED]
3325#define access_private_node global_trees[TI_PRIVATE]
3326
3327#define null_pointer_node global_trees[TI_NULL_POINTER]
3328
3329#define float_type_node global_trees[TI_FLOAT_TYPE]
3330#define double_type_node global_trees[TI_DOUBLE_TYPE]
3331#define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3332
3333#define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3334#define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3335#define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3336#define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3337
3338#define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3339#define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3340#define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3341#define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3342
3343#define void_type_node global_trees[TI_VOID_TYPE]
3344/* The C type `void *'. */
3345#define ptr_type_node global_trees[TI_PTR_TYPE]
3346/* The C type `const void *'. */
3347#define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3348/* The C type `size_t'. */
3349#define size_type_node global_trees[TI_SIZE_TYPE]
3350#define pid_type_node global_trees[TI_PID_TYPE]
3351#define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3352#define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3353#define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3354#define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3355/* The C type `FILE *'. */
3356#define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3357
3358#define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
3359#define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
3360#define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
3361
3362/* The decimal floating point types. */
3363#define dfloat32_type_node global_trees[TI_DFLOAT32_TYPE]
3364#define dfloat64_type_node global_trees[TI_DFLOAT64_TYPE]
3365#define dfloat128_type_node global_trees[TI_DFLOAT128_TYPE]
3366#define dfloat32_ptr_type_node global_trees[TI_DFLOAT32_PTR_TYPE]
3367#define dfloat64_ptr_type_node global_trees[TI_DFLOAT64_PTR_TYPE]
3368#define dfloat128_ptr_type_node global_trees[TI_DFLOAT128_PTR_TYPE]
3369
3370/* The node that should be placed at the end of a parameter list to
3371 indicate that the function does not take a variable number of
3372 arguments. The TREE_VALUE will be void_type_node and there will be
3373 no TREE_CHAIN. Language-independent code should not assume
3374 anything else about this node. */
3375#define void_list_node global_trees[TI_VOID_LIST_NODE]
3376
3377#define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
3378#define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
3379
3380/* An enumeration of the standard C integer types. These must be
3381 ordered so that shorter types appear before longer ones, and so
3382 that signed types appear before unsigned ones, for the correct
3383 functioning of interpret_integer() in c-lex.c. */
3384enum integer_type_kind
3385{
3386 itk_char,
3387 itk_signed_char,
3388 itk_unsigned_char,
3389 itk_short,
3390 itk_unsigned_short,
3391 itk_int,
3392 itk_unsigned_int,
3393 itk_long,
3394 itk_unsigned_long,
3395 itk_long_long,
3396 itk_unsigned_long_long,
3397 itk_none
3398};
3399
3400typedef enum integer_type_kind integer_type_kind;
3401
3402/* The standard C integer types. Use integer_type_kind to index into
3403 this array. */
3404extern GTY(()) tree integer_types[itk_none];
3405
3406#define char_type_node integer_types[itk_char]
3407#define signed_char_type_node integer_types[itk_signed_char]
3408#define unsigned_char_type_node integer_types[itk_unsigned_char]
3409#define short_integer_type_node integer_types[itk_short]
3410#define short_unsigned_type_node integer_types[itk_unsigned_short]
3411#define integer_type_node integer_types[itk_int]
3412#define unsigned_type_node integer_types[itk_unsigned_int]
3413#define long_integer_type_node integer_types[itk_long]
3414#define long_unsigned_type_node integer_types[itk_unsigned_long]
3415#define long_long_integer_type_node integer_types[itk_long_long]
3416#define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
3417
3418/* Set to the default thread-local storage (tls) model to use. */
3419
3420extern enum tls_model flag_tls_default;
3421
3422
3423/* A pointer-to-function member type looks like:
3424
3425 struct {
3426 __P __pfn;
3427 ptrdiff_t __delta;
3428 };
3429
3430 If __pfn is NULL, it is a NULL pointer-to-member-function.
3431
3432 (Because the vtable is always the first thing in the object, we
3433 don't need its offset.) If the function is virtual, then PFN is
3434 one plus twice the index into the vtable; otherwise, it is just a
3435 pointer to the function.
3436
3437 Unfortunately, using the lowest bit of PFN doesn't work in
3438 architectures that don't impose alignment requirements on function
3439 addresses, or that use the lowest bit to tell one ISA from another,
3440 for example. For such architectures, we use the lowest bit of
3441 DELTA instead of the lowest bit of the PFN, and DELTA will be
3442 multiplied by 2. */
3443
3444enum ptrmemfunc_vbit_where_t
3445{
3446 ptrmemfunc_vbit_in_pfn,
3447 ptrmemfunc_vbit_in_delta
3448};
3449
3450#define NULL_TREE (tree) NULL
3451
3452extern tree decl_assembler_name (tree);
3453
3454/* Compute the number of bytes occupied by 'node'. This routine only
3455 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
3456
3457extern size_t tree_size (tree);
3458
3459/* Compute the number of bytes occupied by a tree with code CODE. This
3460 function cannot be used for TREE_VEC or PHI_NODE codes, which are of
3461 variable length. */
3462extern size_t tree_code_size (enum tree_code);
3463
3464/* Lowest level primitive for allocating a node.
3465 The TREE_CODE is the only argument. Contents are initialized
3466 to zero except for a few of the common fields. */
3467
3468extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
3469#define make_node(t) make_node_stat (t MEM_STAT_INFO)
3470
3471/* Make a copy of a node, with all the same contents. */
3472
3473extern tree copy_node_stat (tree MEM_STAT_DECL);
3474#define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
3475
3476/* Make a copy of a chain of TREE_LIST nodes. */
3477
3478extern tree copy_list (tree);
3479
3480/* Make a BINFO. */
3481extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
3482#define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
3483
3484/* Make a TREE_VEC. */
3485
3486extern tree make_tree_vec_stat (int MEM_STAT_DECL);
3487#define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
3488
3489/* Tree nodes for SSA analysis. */
3490
3491extern void init_phinodes (void);
3492extern void fini_phinodes (void);
3493extern void release_phi_node (tree);
3494#ifdef GATHER_STATISTICS
3495extern void phinodes_print_statistics (void);
3496#endif
3497
3498extern void init_ssanames (void);
3499extern void fini_ssanames (void);
3500extern tree make_ssa_name (tree, tree);
3501extern tree duplicate_ssa_name (tree, tree);
3502extern void duplicate_ssa_name_ptr_info (tree, struct ptr_info_def *);
3503extern void release_ssa_name (tree);
3504extern void release_defs (tree);
3505extern void replace_ssa_name_symbol (tree, tree);
3506
3507#ifdef GATHER_STATISTICS
3508extern void ssanames_print_statistics (void);
3509#endif
3510
3511/* Return the (unique) IDENTIFIER_NODE node for a given name.
3512 The name is supplied as a char *. */
3513
3514extern tree get_identifier (const char *);
3515
3516#if GCC_VERSION >= 3000
3517#define get_identifier(str) \
3518 (__builtin_constant_p (str) \
3519 ? get_identifier_with_length ((str), strlen (str)) \
3520 : get_identifier (str))
3521#endif
3522
3523
3524/* Identical to get_identifier, except that the length is assumed
3525 known. */
3526
3527extern tree get_identifier_with_length (const char *, size_t);
3528
3529/* If an identifier with the name TEXT (a null-terminated string) has
3530 previously been referred to, return that node; otherwise return
3531 NULL_TREE. */
3532
3533extern tree maybe_get_identifier (const char *);
3534
3535/* Construct various types of nodes. */
3536
3537extern tree build_nt (enum tree_code, ...);
3538
3539extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
3540#define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
3541extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3542#define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
3543extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
3544#define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
3545extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
3546#define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
3547extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
3548 tree MEM_STAT_DECL);
3549#define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
3550extern tree build5_stat (enum tree_code, tree, tree, tree, tree, tree,
3551 tree MEM_STAT_DECL);
3552#define build5(c,t1,t2,t3,t4,t5,t6) build5_stat (c,t1,t2,t3,t4,t5,t6 MEM_STAT_INFO)
3553extern tree build7_stat (enum tree_code, tree, tree, tree, tree, tree,
3554 tree, tree, tree MEM_STAT_DECL);
3555#define build7(c,t1,t2,t3,t4,t5,t6,t7,t8) \
3556 build7_stat (c,t1,t2,t3,t4,t5,t6,t7,t8 MEM_STAT_INFO)
3557
3558extern tree build_int_cst (tree, HOST_WIDE_INT);
3559extern tree build_int_cst_type (tree, HOST_WIDE_INT);
3560extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
3561extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3562extern tree build_vector (tree, tree);
3563extern tree build_vector_from_ctor (tree, VEC(constructor_elt,gc) *);
3564extern tree build_constructor (tree, VEC(constructor_elt,gc) *);
3565extern tree build_constructor_single (tree, tree, tree);
3566extern tree build_constructor_from_list (tree, tree);
3567extern tree build_real_from_int_cst (tree, tree);
3568extern tree build_complex (tree, tree, tree);
3569extern tree build_one_cst (tree);
3570extern tree build_string (int, const char *);
3571extern tree build_tree_list_stat (tree, tree MEM_STAT_DECL);
3572#define build_tree_list(t,q) build_tree_list_stat(t,q MEM_STAT_INFO)
3573extern tree build_decl_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3574extern tree build_fn_decl (const char *, tree);
3575#define build_decl(c,t,q) build_decl_stat (c,t,q MEM_STAT_INFO)
3576extern tree build_block (tree, tree, tree, tree);
3577#ifndef USE_MAPPED_LOCATION
3578extern void annotate_with_file_line (tree, const char *, int);
3579extern void annotate_with_locus (tree, location_t);
3580#endif
3581extern tree build_empty_stmt (void);
3582extern tree build_omp_clause (enum omp_clause_code);
3583
3584/* Construct various nodes representing data types. */
3585
3586extern tree make_signed_type (int);
3587extern tree make_unsigned_type (int);
3588extern tree signed_type_for (tree);
3589extern tree unsigned_type_for (tree);
3590extern void initialize_sizetypes (bool);
3591extern void set_sizetype (tree);
3592extern void fixup_unsigned_type (tree);
3593extern tree build_pointer_type_for_mode (tree, enum machine_mode, bool);
3594extern tree build_pointer_type (tree);
3595extern tree build_reference_type_for_mode (tree, enum machine_mode, bool);
3596extern tree build_reference_type (tree);
3597extern tree build_vector_type_for_mode (tree, enum machine_mode);
3598extern tree build_vector_type (tree innertype, int nunits);
3599extern tree build_type_no_quals (tree);
3600extern tree build_index_type (tree);
3601extern tree build_index_2_type (tree, tree);
3602extern tree build_array_type (tree, tree);
3603extern tree build_function_type (tree, tree);
3604extern tree build_function_type_list (tree, ...);
3605extern tree build_method_type_directly (tree, tree, tree);
3606extern tree build_method_type (tree, tree);
3607extern tree build_offset_type (tree, tree);
3608extern tree build_complex_type (tree);
3609extern tree build_resx (int);
3610extern tree array_type_nelts (tree);
3611extern bool in_array_bounds_p (tree);
3612extern bool range_in_array_bounds_p (tree);
3613
3614extern tree value_member (tree, tree);
3615extern tree purpose_member (tree, tree);
3616
3617extern int attribute_list_equal (tree, tree);
3618extern int attribute_list_contained (tree, tree);
3619extern int tree_int_cst_equal (tree, tree);
3620extern int tree_int_cst_lt (tree, tree);
3621extern int tree_int_cst_compare (tree, tree);
3622extern int host_integerp (tree, int);
3623extern HOST_WIDE_INT tree_low_cst (tree, int);
3624extern int tree_int_cst_msb (tree);
3625extern int tree_int_cst_sgn (tree);
3626extern int tree_int_cst_sign_bit (tree);
3627extern int tree_expr_nonnegative_p (tree);
3628extern int tree_expr_nonnegative_warnv_p (tree, bool *);
3629extern bool may_negate_without_overflow_p (tree);
3630extern tree get_inner_array_type (tree);
3631
3632/* From expmed.c. Since rtl.h is included after tree.h, we can't
3633 put the prototype here. Rtl.h does declare the prototype if
3634 tree.h had been included. */
3635
3636extern tree make_tree (tree, rtx);
3637
3638/* Return a type like TTYPE except that its TYPE_ATTRIBUTES
3639 is ATTRIBUTE.
3640
3641 Such modified types already made are recorded so that duplicates
3642 are not made. */
3643
3644extern tree build_type_attribute_variant (tree, tree);
3645extern tree build_decl_attribute_variant (tree, tree);
3646
3647/* Structure describing an attribute and a function to handle it. */
3648struct attribute_spec
3649{
3650 /* The name of the attribute (without any leading or trailing __),
3651 or NULL to mark the end of a table of attributes. */
3652 const char *const name;
3653 /* The minimum length of the list of arguments of the attribute. */
3654 const int min_length;
3655 /* The maximum length of the list of arguments of the attribute
3656 (-1 for no maximum). */
3657 const int max_length;
3658 /* Whether this attribute requires a DECL. If it does, it will be passed
3659 from types of DECLs, function return types and array element types to
3660 the DECLs, function types and array types respectively; but when
3661 applied to a type in any other circumstances, it will be ignored with
3662 a warning. (If greater control is desired for a given attribute,
3663 this should be false, and the flags argument to the handler may be
3664 used to gain greater control in that case.) */
3665 const bool decl_required;
3666 /* Whether this attribute requires a type. If it does, it will be passed
3667 from a DECL to the type of that DECL. */
3668 const bool type_required;
3669 /* Whether this attribute requires a function (or method) type. If it does,
3670 it will be passed from a function pointer type to the target type,
3671 and from a function return type (which is not itself a function
3672 pointer type) to the function type. */
3673 const bool function_type_required;
3674 /* Function to handle this attribute. NODE points to the node to which
3675 the attribute is to be applied. If a DECL, it should be modified in
3676 place; if a TYPE, a copy should be created. NAME is the name of the
3677 attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
3678 of the arguments (which may be NULL). FLAGS gives further information
3679 about the context of the attribute. Afterwards, the attributes will
3680 be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
3681 unless *NO_ADD_ATTRS is set to true (which should be done on error,
3682 as well as in any other cases when the attributes should not be added
3683 to the DECL or TYPE). Depending on FLAGS, any attributes to be
3684 applied to another type or DECL later may be returned;
3685 otherwise the return value should be NULL_TREE. This pointer may be
3686 NULL if no special handling is required beyond the checks implied
3687 by the rest of this structure. */
3688 tree (*const handler) (tree *node, tree name, tree args,
3689 int flags, bool *no_add_attrs);
3690};
3691
3692/* Flags that may be passed in the third argument of decl_attributes, and
3693 to handler functions for attributes. */
3694enum attribute_flags
3695{
3696 /* The type passed in is the type of a DECL, and any attributes that
3697 should be passed in again to be applied to the DECL rather than the
3698 type should be returned. */
3699 ATTR_FLAG_DECL_NEXT = 1,
3700 /* The type passed in is a function return type, and any attributes that
3701 should be passed in again to be applied to the function type rather
3702 than the return type should be returned. */
3703 ATTR_FLAG_FUNCTION_NEXT = 2,
3704 /* The type passed in is an array element type, and any attributes that
3705 should be passed in again to be applied to the array type rather
3706 than the element type should be returned. */
3707 ATTR_FLAG_ARRAY_NEXT = 4,
3708 /* The type passed in is a structure, union or enumeration type being
3709 created, and should be modified in place. */
3710 ATTR_FLAG_TYPE_IN_PLACE = 8,
3711 /* The attributes are being applied by default to a library function whose
3712 name indicates known behavior, and should be silently ignored if they
3713 are not in fact compatible with the function type. */
3714 ATTR_FLAG_BUILT_IN = 16
3715};
3716
3717/* Default versions of target-overridable functions. */
3718
3719extern tree merge_decl_attributes (tree, tree);
3720extern tree merge_type_attributes (tree, tree);
3721
3722/* Given a tree node and a string, return nonzero if the tree node is
3723 a valid attribute name for the string. */
3724
3725extern int is_attribute_p (const char *, tree);
3726
3727/* Given an attribute name and a list of attributes, return the list element
3728 of the attribute or NULL_TREE if not found. */
3729
3730extern tree lookup_attribute (const char *, tree);
3731
3732/* Remove any instances of attribute ATTR_NAME in LIST and return the
3733 modified list. */
3734
3735extern tree remove_attribute (const char *, tree);
3736
3737/* Given two attributes lists, return a list of their union. */
3738
3739extern tree merge_attributes (tree, tree);
3740
3741#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
3742/* Given two Windows decl attributes lists, possibly including
3743 dllimport, return a list of their union . */
3744extern tree merge_dllimport_decl_attributes (tree, tree);
3745
3746/* Handle a "dllimport" or "dllexport" attribute. */
3747extern tree handle_dll_attribute (tree *, tree, tree, int, bool *);
3748#endif
3749
3750/* Check whether CAND is suitable to be returned from get_qualified_type
3751 (BASE, TYPE_QUALS). */
3752
3753extern bool check_qualified_type (tree, tree, int);
3754
3755/* Return a version of the TYPE, qualified as indicated by the
3756 TYPE_QUALS, if one exists. If no qualified version exists yet,
3757 return NULL_TREE. */
3758
3759extern tree get_qualified_type (tree, int);
3760
3761/* Like get_qualified_type, but creates the type if it does not
3762 exist. This function never returns NULL_TREE. */
3763
3764extern tree build_qualified_type (tree, int);
3765
3766/* Like build_qualified_type, but only deals with the `const' and
3767 `volatile' qualifiers. This interface is retained for backwards
3768 compatibility with the various front-ends; new code should use
3769 build_qualified_type instead. */
3770
3771#define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
3772 build_qualified_type ((TYPE), \
3773 ((CONST_P) ? TYPE_QUAL_CONST : 0) \
3774 | ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
3775
3776/* Make a copy of a type node. */
3777
3778extern tree build_distinct_type_copy (tree);
3779extern tree build_variant_type_copy (tree);
3780
3781/* Finish up a builtin RECORD_TYPE. Give it a name and provide its
3782 fields. Optionally specify an alignment, and then lay it out. */
3783
3784extern void finish_builtin_struct (tree, const char *,
3785 tree, tree);
3786
3787/* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT,
3788 TYPE_ALIGN and TYPE_MODE fields. If called more than once on one
3789 node, does nothing except for the first time. */
3790
3791extern void layout_type (tree);
3792
3793/* These functions allow a front-end to perform a manual layout of a
3794 RECORD_TYPE. (For instance, if the placement of subsequent fields
3795 depends on the placement of fields so far.) Begin by calling
3796 start_record_layout. Then, call place_field for each of the
3797 fields. Then, call finish_record_layout. See layout_type for the
3798 default way in which these functions are used. */
3799
3800typedef struct record_layout_info_s
3801{
3802 /* The RECORD_TYPE that we are laying out. */
3803 tree t;
3804 /* The offset into the record so far, in bytes, not including bits in
3805 BITPOS. */
3806 tree offset;
3807 /* The last known alignment of SIZE. */
3808 unsigned int offset_align;
3809 /* The bit position within the last OFFSET_ALIGN bits, in bits. */
3810 tree bitpos;
3811 /* The alignment of the record so far, in bits. */
3812 unsigned int record_align;
3813 /* The alignment of the record so far, ignoring #pragma pack and
3814 __attribute__ ((packed)), in bits. */
3815 unsigned int unpacked_align;
3816 /* The previous field layed out. */
3817 tree prev_field;
3818 /* The static variables (i.e., class variables, as opposed to
3819 instance variables) encountered in T. */
3820 tree pending_statics;
3821 /* Bits remaining in the current alignment group */
3822 int remaining_in_alignment;
3823 /* True if we've seen a packed field that didn't have normal
3824 alignment anyway. */
3825 int packed_maybe_necessary;
3826} *record_layout_info;
3827
3828extern void set_lang_adjust_rli (void (*) (record_layout_info));
3829extern record_layout_info start_record_layout (tree);
3830extern tree bit_from_pos (tree, tree);
3831extern tree byte_from_pos (tree, tree);
3832extern void pos_from_bit (tree *, tree *, unsigned int, tree);
3833extern void normalize_offset (tree *, tree *, unsigned int);
3834extern tree rli_size_unit_so_far (record_layout_info);
3835extern tree rli_size_so_far (record_layout_info);
3836extern void normalize_rli (record_layout_info);
3837extern void place_field (record_layout_info, tree);
3838extern void compute_record_mode (tree);
3839extern void finish_record_layout (record_layout_info, int);
3840
3841/* Given a hashcode and a ..._TYPE node (for which the hashcode was made),
3842 return a canonicalized ..._TYPE node, so that duplicates are not made.
3843 How the hash code is computed is up to the caller, as long as any two
3844 callers that could hash identical-looking type nodes agree. */
3845
3846extern tree type_hash_canon (unsigned int, tree);
3847
3848/* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node,
3849 calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE
3850 fields. Call this only once for any given decl node.
3851
3852 Second argument is the boundary that this field can be assumed to
3853 be starting at (in bits). Zero means it can be assumed aligned
3854 on any boundary that may be needed. */
3855
3856extern void layout_decl (tree, unsigned);
3857
3858/* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
3859 a previous call to layout_decl and calls it again. */
3860
3861extern void relayout_decl (tree);
3862
3863/* Return the mode for data of a given size SIZE and mode class CLASS.
3864 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
3865 The value is BLKmode if no other mode is found. This is like
3866 mode_for_size, but is passed a tree. */
3867
3868extern enum machine_mode mode_for_size_tree (tree, enum mode_class, int);
3869
3870/* Return an expr equal to X but certainly not valid as an lvalue. */
3871
3872extern tree non_lvalue (tree);
3873
3874extern tree convert (tree, tree);
3875extern unsigned int expr_align (tree);
3876extern tree expr_first (tree);
3877extern tree expr_last (tree);
3878extern tree expr_only (tree);
3879extern tree size_in_bytes (tree);
3880extern HOST_WIDE_INT int_size_in_bytes (tree);
3881extern HOST_WIDE_INT max_int_size_in_bytes (tree);
3882extern tree bit_position (tree);
3883extern HOST_WIDE_INT int_bit_position (tree);
3884extern tree byte_position (tree);
3885extern HOST_WIDE_INT int_byte_position (tree);
3886
3887/* Define data structures, macros, and functions for handling sizes
3888 and the various types used to represent sizes. */
3889
3890enum size_type_kind
3891{
3892 SIZETYPE, /* Normal representation of sizes in bytes. */
3893 SSIZETYPE, /* Signed representation of sizes in bytes. */
3894 BITSIZETYPE, /* Normal representation of sizes in bits. */
3895 SBITSIZETYPE, /* Signed representation of sizes in bits. */
3896 TYPE_KIND_LAST};
3897
3898extern GTY(()) tree sizetype_tab[(int) TYPE_KIND_LAST];
3899
3900#define sizetype sizetype_tab[(int) SIZETYPE]
3901#define bitsizetype sizetype_tab[(int) BITSIZETYPE]
3902#define ssizetype sizetype_tab[(int) SSIZETYPE]
3903#define sbitsizetype sizetype_tab[(int) SBITSIZETYPE]
3904
3905extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
3906extern tree size_binop (enum tree_code, tree, tree);
3907extern tree size_diffop (tree, tree);
3908
3909#define size_int(L) size_int_kind (L, SIZETYPE)
3910#define ssize_int(L) size_int_kind (L, SSIZETYPE)
3911#define bitsize_int(L) size_int_kind (L, BITSIZETYPE)
3912#define sbitsize_int(L) size_int_kind (L, SBITSIZETYPE)
3913
3914extern tree round_up (tree, int);
3915extern tree round_down (tree, int);
3916extern tree get_pending_sizes (void);
3917extern void put_pending_size (tree);
3918extern void put_pending_sizes (tree);
3919
3920/* Type for sizes of data-type. */
3921
3922#define BITS_PER_UNIT_LOG \
3923 ((BITS_PER_UNIT > 1) + (BITS_PER_UNIT > 2) + (BITS_PER_UNIT > 4) \
3924 + (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
3925 + (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
3926
3927/* If nonzero, an upper limit on alignment of structure fields, in bits, */
3928extern unsigned int maximum_field_alignment;
3929/* and its original value in bytes, specified via -fpack-struct=<value>. */
3930extern unsigned int initial_max_fld_align;
3931
3932/* Concatenate two lists (chains of TREE_LIST nodes) X and Y
3933 by making the last node in X point to Y.
3934 Returns X, except if X is 0 returns Y. */
3935
3936extern tree chainon (tree, tree);
3937
3938/* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
3939
3940extern tree tree_cons_stat (tree, tree, tree MEM_STAT_DECL);
3941#define tree_cons(t,q,w) tree_cons_stat (t,q,w MEM_STAT_INFO)
3942
3943/* Return the last tree node in a chain. */
3944
3945extern tree tree_last (tree);
3946
3947/* Reverse the order of elements in a chain, and return the new head. */
3948
3949extern tree nreverse (tree);
3950
3951/* Returns the length of a chain of nodes
3952 (number of chain pointers to follow before reaching a null pointer). */
3953
3954extern int list_length (tree);
3955
3956/* Returns the number of FIELD_DECLs in a type. */
3957
3958extern int fields_length (tree);
3959
3960/* Given an initializer INIT, return TRUE if INIT is zero or some
3961 aggregate of zeros. Otherwise return FALSE. */
3962
3963extern bool initializer_zerop (tree);
3964
3965/* Examine CTOR to discover:
3966 * how many scalar fields are set to nonzero values,
3967 and place it in *P_NZ_ELTS;
3968 * how many scalar fields in total are in CTOR,
3969 and place it in *P_ELT_COUNT.
3970 * if a type is a union, and the initializer from the constructor
3971 is not the largest element in the union, then set *p_must_clear.
3972
3973 Return whether or not CTOR is a valid static constant initializer, the same
3974 as "initializer_constant_valid_p (CTOR, TREE_TYPE (CTOR)) != 0". */
3975
3976extern bool categorize_ctor_elements (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
3977 bool *);
3978
3979extern HOST_WIDE_INT count_type_elements (tree, bool);
3980
3981/* integer_zerop (tree x) is nonzero if X is an integer constant of value 0. */
3982
3983extern int integer_zerop (tree);
3984
3985/* integer_onep (tree x) is nonzero if X is an integer constant of value 1. */
3986
3987extern int integer_onep (tree);
3988
3989/* integer_all_onesp (tree x) is nonzero if X is an integer constant
3990 all of whose significant bits are 1. */
3991
3992extern int integer_all_onesp (tree);
3993
3994/* integer_pow2p (tree x) is nonzero is X is an integer constant with
3995 exactly one bit 1. */
3996
3997extern int integer_pow2p (tree);
3998
3999/* integer_nonzerop (tree x) is nonzero if X is an integer constant
4000 with a nonzero value. */
4001
4002extern int integer_nonzerop (tree);
4003
4004extern bool zero_p (tree);
4005extern bool cst_and_fits_in_hwi (tree);
4006extern tree num_ending_zeros (tree);
4007
4008/* staticp (tree x) is nonzero if X is a reference to data allocated
4009 at a fixed address in memory. Returns the outermost data. */
4010
4011extern tree staticp (tree);
4012
4013/* save_expr (EXP) returns an expression equivalent to EXP
4014 but it can be used multiple times within context CTX
4015 and only evaluate EXP once. */
4016
4017extern tree save_expr (tree);
4018
4019/* Look inside EXPR and into any simple arithmetic operations. Return
4020 the innermost non-arithmetic node. */
4021
4022extern tree skip_simple_arithmetic (tree);
4023
4024/* Return which tree structure is used by T. */
4025
4026enum tree_node_structure_enum tree_node_structure (tree);
4027
4028/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
4029 or offset that depends on a field within a record.
4030
4031 Note that we only allow such expressions within simple arithmetic
4032 or a COND_EXPR. */
4033
4034extern bool contains_placeholder_p (tree);
4035
4036/* This macro calls the above function but short-circuits the common
4037 case of a constant to save time. Also check for null. */
4038
4039#define CONTAINS_PLACEHOLDER_P(EXP) \
4040 ((EXP) != 0 && ! TREE_CONSTANT (EXP) && contains_placeholder_p (EXP))
4041
4042/* Return 1 if any part of the computation of TYPE involves a PLACEHOLDER_EXPR.
4043 This includes size, bounds, qualifiers (for QUAL_UNION_TYPE) and field
4044 positions. */
4045
4046extern bool type_contains_placeholder_p (tree);
4047
4048/* Given a tree EXP, a FIELD_DECL F, and a replacement value R,
4049 return a tree with all occurrences of references to F in a
4050 PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP
4051 contains only arithmetic expressions. */
4052
4053extern tree substitute_in_expr (tree, tree, tree);
4054
4055/* This macro calls the above function but short-circuits the common
4056 case of a constant to save time and also checks for NULL. */
4057
4058#define SUBSTITUTE_IN_EXPR(EXP, F, R) \
4059 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) : substitute_in_expr (EXP, F, R))
4060
4061/* Similar, but look for a PLACEHOLDER_EXPR in EXP and find a replacement
4062 for it within OBJ, a tree that is an object or a chain of references. */
4063
4064extern tree substitute_placeholder_in_expr (tree, tree);
4065
4066/* This macro calls the above function but short-circuits the common
4067 case of a constant to save time and also checks for NULL. */
4068
4069#define SUBSTITUTE_PLACEHOLDER_IN_EXPR(EXP, OBJ) \
4070 ((EXP) == 0 || TREE_CONSTANT (EXP) ? (EXP) \
4071 : substitute_placeholder_in_expr (EXP, OBJ))
4072
4073/* variable_size (EXP) is like save_expr (EXP) except that it
4074 is for the special case of something that is part of a
4075 variable size for a data type. It makes special arrangements
4076 to compute the value at the right time when the data type
4077 belongs to a function parameter. */
4078
4079extern tree variable_size (tree);
4080
4081/* stabilize_reference (EXP) returns a reference equivalent to EXP
4082 but it can be used multiple times
4083 and only evaluate the subexpressions once. */
4084
4085extern tree stabilize_reference (tree);
4086
4087/* Subroutine of stabilize_reference; this is called for subtrees of
4088 references. Any expression with side-effects must be put in a SAVE_EXPR
4089 to ensure that it is only evaluated once. */
4090
4091extern tree stabilize_reference_1 (tree);
4092
4093/* Return EXP, stripped of any conversions to wider types
4094 in such a way that the result of converting to type FOR_TYPE
4095 is the same as if EXP were converted to FOR_TYPE.
4096 If FOR_TYPE is 0, it signifies EXP's type. */
4097
4098extern tree get_unwidened (tree, tree);
4099
4100/* Return OP or a simpler expression for a narrower value
4101 which can be sign-extended or zero-extended to give back OP.
4102 Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended
4103 or 0 if the value should be sign-extended. */
4104
4105extern tree get_narrower (tree, int *);
4106
4107/* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF,
4108 look for nested component-refs or array-refs at constant positions
4109 and find the ultimate containing object, which is returned. */
4110
4111extern tree get_inner_reference (tree, HOST_WIDE_INT *, HOST_WIDE_INT *,
4112 tree *, enum machine_mode *, int *, int *,
4113 bool);
4114
|
4115/* Return 1 if T is an expression that get_inner_reference handles. */
4116
4117extern int handled_component_p (tree);
4118
4119/* Return a tree of sizetype representing the size, in bytes, of the element
4120 of EXP, an ARRAY_REF. */
4121
4122extern tree array_ref_element_size (tree);
4123
4124/* Return a tree representing the lower bound of the array mentioned in
4125 EXP, an ARRAY_REF. */
4126
4127extern tree array_ref_low_bound (tree);
4128
4129/* Return a tree representing the upper bound of the array mentioned in
4130 EXP, an ARRAY_REF. */
4131
4132extern tree array_ref_up_bound (tree);
4133
4134/* Return a tree representing the offset, in bytes, of the field referenced
4135 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
4136
4137extern tree component_ref_field_offset (tree);
4138
4139/* Given a DECL or TYPE, return the scope in which it was declared, or
4140 NUL_TREE if there is no containing scope. */
4141
4142extern tree get_containing_scope (tree);
4143
4144/* Return the FUNCTION_DECL which provides this _DECL with its context,
4145 or zero if none. */
4146extern tree decl_function_context (tree);
4147
4148/* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides
4149 this _DECL with its context, or zero if none. */
4150extern tree decl_type_context (tree);
4151
4152/* Return 1 if EXPR is the real constant zero. */
4153extern int real_zerop (tree);
4154
4155/* Declare commonly used variables for tree structure. */
4156
4157/* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
4158 Zero means allow extended lvalues. */
4159
4160extern int pedantic_lvalues;
4161
4162/* Points to the FUNCTION_DECL of the function whose body we are reading. */
4163
4164extern GTY(()) tree current_function_decl;
4165
4166/* Nonzero means a FUNC_BEGIN label was emitted. */
4167extern GTY(()) const char * current_function_func_begin_label;
4168
4169/* In tree.c */
4170extern unsigned crc32_string (unsigned, const char *);
4171extern void clean_symbol_name (char *);
4172extern tree get_file_function_name_long (const char *);
4173extern tree get_callee_fndecl (tree);
4174extern void change_decl_assembler_name (tree, tree);
4175extern int type_num_arguments (tree);
4176extern bool associative_tree_code (enum tree_code);
4177extern bool commutative_tree_code (enum tree_code);
4178extern tree upper_bound_in_type (tree, tree);
4179extern tree lower_bound_in_type (tree, tree);
4180extern int operand_equal_for_phi_arg_p (tree, tree);
4181extern bool empty_body_p (tree);
4182
4183/* In stmt.c */
4184
4185extern void expand_expr_stmt (tree);
4186extern int warn_if_unused_value (tree, location_t);
4187extern void expand_label (tree);
4188extern void expand_goto (tree);
4189
4190extern rtx expand_stack_save (void);
4191extern void expand_stack_restore (tree);
4192extern void expand_return (tree);
4193extern int is_body_block (tree);
4194
4195/* In tree-eh.c */
4196extern void using_eh_for_cleanups (void);
4197
4198/* In fold-const.c */
4199
4200/* Non-zero if we are folding constants inside an initializer; zero
4201 otherwise. */
4202extern int folding_initializer;
4203
4204/* Fold constants as much as possible in an expression.
4205 Returns the simplified expression.
4206 Acts only on the top level of the expression;
4207 if the argument itself cannot be simplified, its
4208 subexpressions are not changed. */
4209
4210extern tree fold (tree);
4211extern tree fold_unary (enum tree_code, tree, tree);
4212extern tree fold_binary (enum tree_code, tree, tree, tree);
4213extern tree fold_ternary (enum tree_code, tree, tree, tree, tree);
4214extern tree fold_build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
4215#define fold_build1(c,t1,t2) fold_build1_stat (c, t1, t2 MEM_STAT_INFO)
4216extern tree fold_build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
4217#define fold_build2(c,t1,t2,t3) fold_build2_stat (c, t1, t2, t3 MEM_STAT_INFO)
4218extern tree fold_build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
4219#define fold_build3(c,t1,t2,t3,t4) fold_build3_stat (c, t1, t2, t3, t4 MEM_STAT_INFO)
4220extern tree fold_build1_initializer (enum tree_code, tree, tree);
4221extern tree fold_build2_initializer (enum tree_code, tree, tree, tree);
4222extern tree fold_build3_initializer (enum tree_code, tree, tree, tree, tree);
4223extern tree fold_convert (tree, tree);
4224extern tree fold_single_bit_test (enum tree_code, tree, tree, tree);
4225extern tree fold_ignored_result (tree);
4226extern tree fold_abs_const (tree, tree);
4227extern tree fold_indirect_ref_1 (tree, tree);
4228extern void fold_defer_overflow_warnings (void);
4229extern void fold_undefer_overflow_warnings (bool, tree, int);
4230extern void fold_undefer_and_ignore_overflow_warnings (void);
4231extern bool fold_deferring_overflow_warnings_p (void);
4232
4233extern tree force_fit_type (tree, int, bool, bool);
4234
4235extern int add_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4236 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4237 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4238 bool);
4239#define add_double(l1,h1,l2,h2,lv,hv) \
4240 add_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4241extern int neg_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4242 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4243extern int mul_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4244 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4245 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4246 bool);
4247#define mul_double(l1,h1,l2,h2,lv,hv) \
4248 mul_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4249extern void lshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4250 HOST_WIDE_INT, unsigned int,
4251 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4252extern void rshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4253 HOST_WIDE_INT, unsigned int,
4254 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4255extern void lrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4256 HOST_WIDE_INT, unsigned int,
4257 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4258extern void rrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4259 HOST_WIDE_INT, unsigned int,
4260 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4261
4262extern int div_and_round_double (enum tree_code, int, unsigned HOST_WIDE_INT,
4263 HOST_WIDE_INT, unsigned HOST_WIDE_INT,
4264 HOST_WIDE_INT, unsigned HOST_WIDE_INT *,
4265 HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
4266 HOST_WIDE_INT *);
4267
4268enum operand_equal_flag
4269{
4270 OEP_ONLY_CONST = 1,
4271 OEP_PURE_SAME = 2
4272};
4273
4274extern int operand_equal_p (tree, tree, unsigned int);
4275
4276extern tree omit_one_operand (tree, tree, tree);
4277extern tree omit_two_operands (tree, tree, tree, tree);
4278extern tree invert_truthvalue (tree);
4279extern tree fold_truth_not_expr (tree);
4280extern tree fold_unary_to_constant (enum tree_code, tree, tree);
4281extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree);
4282extern tree fold_read_from_constant_string (tree);
4283extern tree int_const_binop (enum tree_code, tree, tree, int);
4284extern tree build_fold_addr_expr (tree);
4285extern tree fold_build_cleanup_point_expr (tree type, tree expr);
4286extern tree fold_strip_sign_ops (tree);
4287extern tree build_fold_addr_expr_with_type (tree, tree);
4288extern tree build_fold_indirect_ref (tree);
4289extern tree fold_indirect_ref (tree);
4290extern tree constant_boolean_node (int, tree);
4291extern tree build_low_bits_mask (tree, unsigned);
4292
4293extern bool tree_swap_operands_p (tree, tree, bool);
4294extern void swap_tree_operands (tree, tree *, tree *);
4295extern enum tree_code swap_tree_comparison (enum tree_code);
4296
4297extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
4298extern enum tree_code invert_tree_comparison (enum tree_code, bool);
4299
4300extern bool tree_expr_nonzero_p (tree);
4301extern bool tree_expr_nonzero_warnv_p (tree, bool *);
4302
4303/* In builtins.c */
4304extern tree fold_builtin (tree, tree, bool);
4305extern tree fold_builtin_fputs (tree, bool, bool, tree);
4306extern tree fold_builtin_strcpy (tree, tree, tree);
4307extern tree fold_builtin_strncpy (tree, tree, tree);
4308extern tree fold_builtin_memory_chk (tree, tree, tree, bool,
4309 enum built_in_function);
4310extern tree fold_builtin_stxcpy_chk (tree, tree, tree, bool,
4311 enum built_in_function);
4312extern tree fold_builtin_strncpy_chk (tree, tree);
4313extern tree fold_builtin_snprintf_chk (tree, tree, enum built_in_function);
4314extern bool fold_builtin_next_arg (tree);
4315extern enum built_in_function builtin_mathfn_code (tree);
4316extern tree build_function_call_expr (tree, tree);
4317extern tree mathfn_built_in (tree, enum built_in_function fn);
4318extern tree strip_float_extensions (tree);
4319extern tree c_strlen (tree, int);
4320extern tree std_gimplify_va_arg_expr (tree, tree, tree *, tree *);
4321extern tree build_va_arg_indirect_ref (tree);
4322tree build_string_literal (int, const char *);
4323
4324/* In convert.c */
4325extern tree strip_float_extensions (tree);
4326
4327/* In alias.c */
4328extern void record_component_aliases (tree);
4329extern HOST_WIDE_INT get_alias_set (tree);
4330extern int alias_sets_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
4331extern int alias_sets_might_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
4332extern int objects_must_conflict_p (tree, tree);
4333
4334/* In tree.c */
4335extern int really_constant_p (tree);
4336extern int int_fits_type_p (tree, tree);
4337extern bool variably_modified_type_p (tree, tree);
4338extern int tree_log2 (tree);
4339extern int tree_floor_log2 (tree);
4340extern int simple_cst_equal (tree, tree);
4341extern hashval_t iterative_hash_expr (tree, hashval_t);
4342extern int compare_tree_int (tree, unsigned HOST_WIDE_INT);
4343extern int type_list_equal (tree, tree);
4344extern int chain_member (tree, tree);
4345extern tree type_hash_lookup (unsigned int, tree);
4346extern void type_hash_add (unsigned int, tree);
4347extern int simple_cst_list_equal (tree, tree);
4348extern void dump_tree_statistics (void);
4349extern void expand_function_end (void);
4350extern void expand_function_start (tree);
4351extern void stack_protect_prologue (void);
4352extern void stack_protect_epilogue (void);
4353extern void recompute_tree_invariant_for_addr_expr (tree);
4354extern bool is_global_var (tree t);
4355extern bool needs_to_live_in_memory (tree);
4356extern tree reconstruct_complex_type (tree, tree);
4357
4358extern int real_onep (tree);
4359extern int real_twop (tree);
4360extern int real_minus_onep (tree);
4361extern void init_ttree (void);
4362extern void build_common_tree_nodes (bool, bool);
4363extern void build_common_tree_nodes_2 (int);
4364extern void build_common_builtin_nodes (void);
4365extern tree build_nonstandard_integer_type (unsigned HOST_WIDE_INT, int);
4366extern tree build_range_type (tree, tree, tree);
4367extern HOST_WIDE_INT int_cst_value (tree);
4368extern tree tree_fold_gcd (tree, tree);
4369extern tree build_addr (tree, tree);
4370
4371extern bool fields_compatible_p (tree, tree);
4372extern tree find_compatible_field (tree, tree);
4373
4374/* In function.c */
4375extern void expand_main_function (void);
4376extern void init_dummy_function_start (void);
4377extern void expand_dummy_function_end (void);
4378extern unsigned int init_function_for_compilation (void);
4379extern void allocate_struct_function (tree);
4380extern void init_function_start (tree);
4381extern bool use_register_for_decl (tree);
4382extern void setjmp_vars_warning (tree);
4383extern void setjmp_args_warning (void);
4384extern void init_temp_slots (void);
4385extern void free_temp_slots (void);
4386extern void pop_temp_slots (void);
4387extern void push_temp_slots (void);
4388extern void preserve_temp_slots (rtx);
4389extern int aggregate_value_p (tree, tree);
4390extern void push_function_context (void);
4391extern void pop_function_context (void);
4392extern void push_function_context_to (tree);
4393extern void pop_function_context_from (tree);
4394extern tree gimplify_parameters (void);
4395
4396/* In print-rtl.c */
4397#ifdef BUFSIZ
4398extern void print_rtl (FILE *, rtx);
4399#endif
4400
4401/* In print-tree.c */
4402extern void debug_tree (tree);
4403#ifdef BUFSIZ
4404extern void dump_addr (FILE*, const char *, void *);
4405extern void print_node (FILE *, const char *, tree, int);
4406extern void print_node_brief (FILE *, const char *, tree, int);
4407extern void indent_to (FILE *, int);
4408#endif
4409
4410/* In tree-inline.c: */
4411extern bool debug_find_tree (tree, tree);
4412/* This is in tree-inline.c since the routine uses
4413 data structures from the inliner. */
4414extern tree unsave_expr_now (tree);
4415extern tree build_duplicate_type (tree);
4416
4417/* In emit-rtl.c */
4418extern rtx emit_line_note (location_t);
4419
4420/* In calls.c */
4421
4422/* Nonzero if this is a call to a function whose return value depends
4423 solely on its arguments, has no side effects, and does not read
4424 global memory. */
4425#define ECF_CONST 1
4426/* Nonzero if this call will never return. */
4427#define ECF_NORETURN 2
4428/* Nonzero if this is a call to malloc or a related function. */
4429#define ECF_MALLOC 4
4430/* Nonzero if it is plausible that this is a call to alloca. */
4431#define ECF_MAY_BE_ALLOCA 8
4432/* Nonzero if this is a call to a function that won't throw an exception. */
4433#define ECF_NOTHROW 16
4434/* Nonzero if this is a call to setjmp or a related function. */
4435#define ECF_RETURNS_TWICE 32
4436/* Nonzero if this call replaces the current stack frame. */
4437#define ECF_SIBCALL 64
4438/* Nonzero if this is a call to "pure" function (like const function,
4439 but may read memory. */
4440#define ECF_PURE 128
4441/* Nonzero if this is a call to a function that returns with the stack
4442 pointer depressed. */
4443#define ECF_SP_DEPRESSED 256
4444/* Create libcall block around the call. */
4445#define ECF_LIBCALL_BLOCK 512
4446/* Function does not read or write memory (but may have side effects, so
4447 it does not necessarily fit ECF_CONST). */
4448#define ECF_NOVOPS 1024
4449
4450extern int flags_from_decl_or_type (tree);
4451extern int call_expr_flags (tree);
4452
4453extern int setjmp_call_p (tree);
4454extern bool alloca_call_p (tree);
4455extern bool must_pass_in_stack_var_size (enum machine_mode, tree);
4456extern bool must_pass_in_stack_var_size_or_pad (enum machine_mode, tree);
4457
4458/* In attribs.c. */
4459
4460/* Process the attributes listed in ATTRIBUTES and install them in *NODE,
4461 which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
4462 it should be modified in place; if a TYPE, a copy should be created
4463 unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
4464 information, in the form of a bitwise OR of flags in enum attribute_flags
4465 from tree.h. Depending on these flags, some attributes may be
4466 returned to be applied at a later stage (for example, to apply
4467 a decl attribute to the declaration rather than to its type). */
4468extern tree decl_attributes (tree *, tree, int);
4469
4470/* In integrate.c */
4471extern void set_decl_abstract_flags (tree, int);
4472extern void set_decl_origin_self (tree);
4473
4474/* In stor-layout.c */
4475extern void set_min_and_max_values_for_integral_type (tree, int, bool);
4476extern void fixup_signed_type (tree);
4477extern void internal_reference_types (void);
4478extern unsigned int update_alignment_for_field (record_layout_info, tree,
4479 unsigned int);
4480/* varasm.c */
4481extern void make_decl_rtl (tree);
4482extern void make_decl_one_only (tree);
4483extern int supports_one_only (void);
4484extern void resolve_unique_section (tree, int, int);
4485extern void mark_referenced (tree);
4486extern void mark_decl_referenced (tree);
4487extern void notice_global_symbol (tree);
4488extern void set_user_assembler_name (tree, const char *);
4489extern void process_pending_assemble_externals (void);
4490extern void finish_aliases_1 (void);
4491extern void finish_aliases_2 (void);
4492
4493/* In stmt.c */
4494extern void expand_computed_goto (tree);
4495extern bool parse_output_constraint (const char **, int, int, int,
4496 bool *, bool *, bool *);
4497extern bool parse_input_constraint (const char **, int, int, int, int,
4498 const char * const *, bool *, bool *);
4499extern void expand_asm_expr (tree);
4500extern tree resolve_asm_operand_names (tree, tree, tree);
4501extern void expand_case (tree);
4502extern void expand_decl (tree);
4503extern void expand_anon_union_decl (tree, tree, tree);
4504#ifdef HARD_CONST
4505/* Silly ifdef to avoid having all includers depend on hard-reg-set.h. */
4506extern tree tree_overlaps_hard_reg_set (tree, HARD_REG_SET *);
4507#endif
4508
4509/* In gimplify.c. */
4510extern tree create_artificial_label (void);
4511extern void gimplify_function_tree (tree);
4512extern const char *get_name (tree);
4513extern tree unshare_expr (tree);
4514extern void sort_case_labels (tree);
4515
4516/* If KIND=='I', return a suitable global initializer (constructor) name.
4517 If KIND=='D', return a suitable global clean-up (destructor) name. */
4518extern tree get_file_function_name (int);
4519
4520/* Interface of the DWARF2 unwind info support. */
4521
4522/* Generate a new label for the CFI info to refer to. */
4523
4524extern char *dwarf2out_cfi_label (void);
4525
4526/* Entry point to update the canonical frame address (CFA). */
4527
4528extern void dwarf2out_def_cfa (const char *, unsigned, HOST_WIDE_INT);
4529
4530/* Add the CFI for saving a register window. */
4531
4532extern void dwarf2out_window_save (const char *);
4533
4534/* Add a CFI to update the running total of the size of arguments pushed
4535 onto the stack. */
4536
4537extern void dwarf2out_args_size (const char *, HOST_WIDE_INT);
4538
4539/* Entry point for saving a register to the stack. */
4540
4541extern void dwarf2out_reg_save (const char *, unsigned, HOST_WIDE_INT);
4542
4543/* Entry point for saving the return address in the stack. */
4544
4545extern void dwarf2out_return_save (const char *, HOST_WIDE_INT);
4546
4547/* Entry point for saving the return address in a register. */
4548
4549extern void dwarf2out_return_reg (const char *, unsigned);
4550
4551/* Entry point for saving the first register into the second. */
4552
4553extern void dwarf2out_reg_save_reg (const char *, rtx, rtx);
4554
4555/* In tree-inline.c */
4556
4557/* The type of a set of already-visited pointers. Functions for creating
4558 and manipulating it are declared in pointer-set.h */
4559struct pointer_set_t;
4560
4561/* The type of a callback function for walking over tree structure. */
4562
4563typedef tree (*walk_tree_fn) (tree *, int *, void *);
4564extern tree walk_tree (tree*, walk_tree_fn, void*, struct pointer_set_t*);
4565extern tree walk_tree_without_duplicates (tree*, walk_tree_fn, void*);
4566
4567/* Assign the RTX to declaration. */
4568
4569extern void set_decl_rtl (tree, rtx);
4570extern void set_decl_incoming_rtl (tree, rtx);
4571
4572/* Enum and arrays used for tree allocation stats.
4573 Keep in sync with tree.c:tree_node_kind_names. */
4574typedef enum
4575{
4576 d_kind,
4577 t_kind,
4578 b_kind,
4579 s_kind,
4580 r_kind,
4581 e_kind,
4582 c_kind,
4583 id_kind,
4584 perm_list_kind,
4585 temp_list_kind,
4586 vec_kind,
4587 binfo_kind,
4588 phi_kind,
4589 ssa_name_kind,
4590 constr_kind,
4591 x_kind,
4592 lang_decl,
4593 lang_type,
4594 omp_clause_kind,
4595 all_kinds
4596} tree_node_kind;
4597
4598extern int tree_node_counts[];
4599extern int tree_node_sizes[];
4600
4601/* True if we are in gimple form and the actions of the folders need to
4602 be restricted. False if we are not in gimple form and folding is not
4603 restricted to creating gimple expressions. */
4604extern bool in_gimple_form;
4605
4606/* In tree-gimple.c. */
4607extern tree get_base_address (tree t);
4608
4609/* In tree-vectorizer.c. */
4610extern void vect_set_verbosity_level (const char *);
4611
4612struct tree_map GTY(())
4613{
4614 unsigned int hash;
4615 tree from;
4616 tree to;
4617};
4618
4619extern unsigned int tree_map_hash (const void *);
4620extern int tree_map_marked_p (const void *);
4621extern int tree_map_eq (const void *, const void *);
4622
4623/* In tree-ssa-address.c. */
4624extern tree tree_mem_ref_addr (tree, tree);
4625extern void copy_mem_ref_info (tree, tree);
4626
4627/* In tree-vrp.c */
4628extern bool ssa_name_nonzero_p (tree);
4629extern bool ssa_name_nonnegative_p (tree);
4630
4631/* In tree-object-size.c. */
4632extern void init_object_sizes (void);
4633extern void fini_object_sizes (void);
4634extern unsigned HOST_WIDE_INT compute_builtin_object_size (tree, int);
4635
4636/* In expr.c. */
4637extern unsigned HOST_WIDE_INT highest_pow2_factor (tree);
4638
4639#endif /* GCC_TREE_H */
| 4121/* Return 1 if T is an expression that get_inner_reference handles. */
4122
4123extern int handled_component_p (tree);
4124
4125/* Return a tree of sizetype representing the size, in bytes, of the element
4126 of EXP, an ARRAY_REF. */
4127
4128extern tree array_ref_element_size (tree);
4129
4130/* Return a tree representing the lower bound of the array mentioned in
4131 EXP, an ARRAY_REF. */
4132
4133extern tree array_ref_low_bound (tree);
4134
4135/* Return a tree representing the upper bound of the array mentioned in
4136 EXP, an ARRAY_REF. */
4137
4138extern tree array_ref_up_bound (tree);
4139
4140/* Return a tree representing the offset, in bytes, of the field referenced
4141 by EXP. This does not include any offset in DECL_FIELD_BIT_OFFSET. */
4142
4143extern tree component_ref_field_offset (tree);
4144
4145/* Given a DECL or TYPE, return the scope in which it was declared, or
4146 NUL_TREE if there is no containing scope. */
4147
4148extern tree get_containing_scope (tree);
4149
4150/* Return the FUNCTION_DECL which provides this _DECL with its context,
4151 or zero if none. */
4152extern tree decl_function_context (tree);
4153
4154/* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides
4155 this _DECL with its context, or zero if none. */
4156extern tree decl_type_context (tree);
4157
4158/* Return 1 if EXPR is the real constant zero. */
4159extern int real_zerop (tree);
4160
4161/* Declare commonly used variables for tree structure. */
4162
4163/* Nonzero means lvalues are limited to those valid in pedantic ANSI C.
4164 Zero means allow extended lvalues. */
4165
4166extern int pedantic_lvalues;
4167
4168/* Points to the FUNCTION_DECL of the function whose body we are reading. */
4169
4170extern GTY(()) tree current_function_decl;
4171
4172/* Nonzero means a FUNC_BEGIN label was emitted. */
4173extern GTY(()) const char * current_function_func_begin_label;
4174
4175/* In tree.c */
4176extern unsigned crc32_string (unsigned, const char *);
4177extern void clean_symbol_name (char *);
4178extern tree get_file_function_name_long (const char *);
4179extern tree get_callee_fndecl (tree);
4180extern void change_decl_assembler_name (tree, tree);
4181extern int type_num_arguments (tree);
4182extern bool associative_tree_code (enum tree_code);
4183extern bool commutative_tree_code (enum tree_code);
4184extern tree upper_bound_in_type (tree, tree);
4185extern tree lower_bound_in_type (tree, tree);
4186extern int operand_equal_for_phi_arg_p (tree, tree);
4187extern bool empty_body_p (tree);
4188
4189/* In stmt.c */
4190
4191extern void expand_expr_stmt (tree);
4192extern int warn_if_unused_value (tree, location_t);
4193extern void expand_label (tree);
4194extern void expand_goto (tree);
4195
4196extern rtx expand_stack_save (void);
4197extern void expand_stack_restore (tree);
4198extern void expand_return (tree);
4199extern int is_body_block (tree);
4200
4201/* In tree-eh.c */
4202extern void using_eh_for_cleanups (void);
4203
4204/* In fold-const.c */
4205
4206/* Non-zero if we are folding constants inside an initializer; zero
4207 otherwise. */
4208extern int folding_initializer;
4209
4210/* Fold constants as much as possible in an expression.
4211 Returns the simplified expression.
4212 Acts only on the top level of the expression;
4213 if the argument itself cannot be simplified, its
4214 subexpressions are not changed. */
4215
4216extern tree fold (tree);
4217extern tree fold_unary (enum tree_code, tree, tree);
4218extern tree fold_binary (enum tree_code, tree, tree, tree);
4219extern tree fold_ternary (enum tree_code, tree, tree, tree, tree);
4220extern tree fold_build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
4221#define fold_build1(c,t1,t2) fold_build1_stat (c, t1, t2 MEM_STAT_INFO)
4222extern tree fold_build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
4223#define fold_build2(c,t1,t2,t3) fold_build2_stat (c, t1, t2, t3 MEM_STAT_INFO)
4224extern tree fold_build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
4225#define fold_build3(c,t1,t2,t3,t4) fold_build3_stat (c, t1, t2, t3, t4 MEM_STAT_INFO)
4226extern tree fold_build1_initializer (enum tree_code, tree, tree);
4227extern tree fold_build2_initializer (enum tree_code, tree, tree, tree);
4228extern tree fold_build3_initializer (enum tree_code, tree, tree, tree, tree);
4229extern tree fold_convert (tree, tree);
4230extern tree fold_single_bit_test (enum tree_code, tree, tree, tree);
4231extern tree fold_ignored_result (tree);
4232extern tree fold_abs_const (tree, tree);
4233extern tree fold_indirect_ref_1 (tree, tree);
4234extern void fold_defer_overflow_warnings (void);
4235extern void fold_undefer_overflow_warnings (bool, tree, int);
4236extern void fold_undefer_and_ignore_overflow_warnings (void);
4237extern bool fold_deferring_overflow_warnings_p (void);
4238
4239extern tree force_fit_type (tree, int, bool, bool);
4240
4241extern int add_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4242 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4243 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4244 bool);
4245#define add_double(l1,h1,l2,h2,lv,hv) \
4246 add_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4247extern int neg_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4248 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4249extern int mul_double_with_sign (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4250 unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4251 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *,
4252 bool);
4253#define mul_double(l1,h1,l2,h2,lv,hv) \
4254 mul_double_with_sign (l1, h1, l2, h2, lv, hv, false)
4255extern void lshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4256 HOST_WIDE_INT, unsigned int,
4257 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4258extern void rshift_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4259 HOST_WIDE_INT, unsigned int,
4260 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *, int);
4261extern void lrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4262 HOST_WIDE_INT, unsigned int,
4263 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4264extern void rrotate_double (unsigned HOST_WIDE_INT, HOST_WIDE_INT,
4265 HOST_WIDE_INT, unsigned int,
4266 unsigned HOST_WIDE_INT *, HOST_WIDE_INT *);
4267
4268extern int div_and_round_double (enum tree_code, int, unsigned HOST_WIDE_INT,
4269 HOST_WIDE_INT, unsigned HOST_WIDE_INT,
4270 HOST_WIDE_INT, unsigned HOST_WIDE_INT *,
4271 HOST_WIDE_INT *, unsigned HOST_WIDE_INT *,
4272 HOST_WIDE_INT *);
4273
4274enum operand_equal_flag
4275{
4276 OEP_ONLY_CONST = 1,
4277 OEP_PURE_SAME = 2
4278};
4279
4280extern int operand_equal_p (tree, tree, unsigned int);
4281
4282extern tree omit_one_operand (tree, tree, tree);
4283extern tree omit_two_operands (tree, tree, tree, tree);
4284extern tree invert_truthvalue (tree);
4285extern tree fold_truth_not_expr (tree);
4286extern tree fold_unary_to_constant (enum tree_code, tree, tree);
4287extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree);
4288extern tree fold_read_from_constant_string (tree);
4289extern tree int_const_binop (enum tree_code, tree, tree, int);
4290extern tree build_fold_addr_expr (tree);
4291extern tree fold_build_cleanup_point_expr (tree type, tree expr);
4292extern tree fold_strip_sign_ops (tree);
4293extern tree build_fold_addr_expr_with_type (tree, tree);
4294extern tree build_fold_indirect_ref (tree);
4295extern tree fold_indirect_ref (tree);
4296extern tree constant_boolean_node (int, tree);
4297extern tree build_low_bits_mask (tree, unsigned);
4298
4299extern bool tree_swap_operands_p (tree, tree, bool);
4300extern void swap_tree_operands (tree, tree *, tree *);
4301extern enum tree_code swap_tree_comparison (enum tree_code);
4302
4303extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
4304extern enum tree_code invert_tree_comparison (enum tree_code, bool);
4305
4306extern bool tree_expr_nonzero_p (tree);
4307extern bool tree_expr_nonzero_warnv_p (tree, bool *);
4308
4309/* In builtins.c */
4310extern tree fold_builtin (tree, tree, bool);
4311extern tree fold_builtin_fputs (tree, bool, bool, tree);
4312extern tree fold_builtin_strcpy (tree, tree, tree);
4313extern tree fold_builtin_strncpy (tree, tree, tree);
4314extern tree fold_builtin_memory_chk (tree, tree, tree, bool,
4315 enum built_in_function);
4316extern tree fold_builtin_stxcpy_chk (tree, tree, tree, bool,
4317 enum built_in_function);
4318extern tree fold_builtin_strncpy_chk (tree, tree);
4319extern tree fold_builtin_snprintf_chk (tree, tree, enum built_in_function);
4320extern bool fold_builtin_next_arg (tree);
4321extern enum built_in_function builtin_mathfn_code (tree);
4322extern tree build_function_call_expr (tree, tree);
4323extern tree mathfn_built_in (tree, enum built_in_function fn);
4324extern tree strip_float_extensions (tree);
4325extern tree c_strlen (tree, int);
4326extern tree std_gimplify_va_arg_expr (tree, tree, tree *, tree *);
4327extern tree build_va_arg_indirect_ref (tree);
4328tree build_string_literal (int, const char *);
4329
4330/* In convert.c */
4331extern tree strip_float_extensions (tree);
4332
4333/* In alias.c */
4334extern void record_component_aliases (tree);
4335extern HOST_WIDE_INT get_alias_set (tree);
4336extern int alias_sets_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
4337extern int alias_sets_might_conflict_p (HOST_WIDE_INT, HOST_WIDE_INT);
4338extern int objects_must_conflict_p (tree, tree);
4339
4340/* In tree.c */
4341extern int really_constant_p (tree);
4342extern int int_fits_type_p (tree, tree);
4343extern bool variably_modified_type_p (tree, tree);
4344extern int tree_log2 (tree);
4345extern int tree_floor_log2 (tree);
4346extern int simple_cst_equal (tree, tree);
4347extern hashval_t iterative_hash_expr (tree, hashval_t);
4348extern int compare_tree_int (tree, unsigned HOST_WIDE_INT);
4349extern int type_list_equal (tree, tree);
4350extern int chain_member (tree, tree);
4351extern tree type_hash_lookup (unsigned int, tree);
4352extern void type_hash_add (unsigned int, tree);
4353extern int simple_cst_list_equal (tree, tree);
4354extern void dump_tree_statistics (void);
4355extern void expand_function_end (void);
4356extern void expand_function_start (tree);
4357extern void stack_protect_prologue (void);
4358extern void stack_protect_epilogue (void);
4359extern void recompute_tree_invariant_for_addr_expr (tree);
4360extern bool is_global_var (tree t);
4361extern bool needs_to_live_in_memory (tree);
4362extern tree reconstruct_complex_type (tree, tree);
4363
4364extern int real_onep (tree);
4365extern int real_twop (tree);
4366extern int real_minus_onep (tree);
4367extern void init_ttree (void);
4368extern void build_common_tree_nodes (bool, bool);
4369extern void build_common_tree_nodes_2 (int);
4370extern void build_common_builtin_nodes (void);
4371extern tree build_nonstandard_integer_type (unsigned HOST_WIDE_INT, int);
4372extern tree build_range_type (tree, tree, tree);
4373extern HOST_WIDE_INT int_cst_value (tree);
4374extern tree tree_fold_gcd (tree, tree);
4375extern tree build_addr (tree, tree);
4376
4377extern bool fields_compatible_p (tree, tree);
4378extern tree find_compatible_field (tree, tree);
4379
4380/* In function.c */
4381extern void expand_main_function (void);
4382extern void init_dummy_function_start (void);
4383extern void expand_dummy_function_end (void);
4384extern unsigned int init_function_for_compilation (void);
4385extern void allocate_struct_function (tree);
4386extern void init_function_start (tree);
4387extern bool use_register_for_decl (tree);
4388extern void setjmp_vars_warning (tree);
4389extern void setjmp_args_warning (void);
4390extern void init_temp_slots (void);
4391extern void free_temp_slots (void);
4392extern void pop_temp_slots (void);
4393extern void push_temp_slots (void);
4394extern void preserve_temp_slots (rtx);
4395extern int aggregate_value_p (tree, tree);
4396extern void push_function_context (void);
4397extern void pop_function_context (void);
4398extern void push_function_context_to (tree);
4399extern void pop_function_context_from (tree);
4400extern tree gimplify_parameters (void);
4401
4402/* In print-rtl.c */
4403#ifdef BUFSIZ
4404extern void print_rtl (FILE *, rtx);
4405#endif
4406
4407/* In print-tree.c */
4408extern void debug_tree (tree);
4409#ifdef BUFSIZ
4410extern void dump_addr (FILE*, const char *, void *);
4411extern void print_node (FILE *, const char *, tree, int);
4412extern void print_node_brief (FILE *, const char *, tree, int);
4413extern void indent_to (FILE *, int);
4414#endif
4415
4416/* In tree-inline.c: */
4417extern bool debug_find_tree (tree, tree);
4418/* This is in tree-inline.c since the routine uses
4419 data structures from the inliner. */
4420extern tree unsave_expr_now (tree);
4421extern tree build_duplicate_type (tree);
4422
4423/* In emit-rtl.c */
4424extern rtx emit_line_note (location_t);
4425
4426/* In calls.c */
4427
4428/* Nonzero if this is a call to a function whose return value depends
4429 solely on its arguments, has no side effects, and does not read
4430 global memory. */
4431#define ECF_CONST 1
4432/* Nonzero if this call will never return. */
4433#define ECF_NORETURN 2
4434/* Nonzero if this is a call to malloc or a related function. */
4435#define ECF_MALLOC 4
4436/* Nonzero if it is plausible that this is a call to alloca. */
4437#define ECF_MAY_BE_ALLOCA 8
4438/* Nonzero if this is a call to a function that won't throw an exception. */
4439#define ECF_NOTHROW 16
4440/* Nonzero if this is a call to setjmp or a related function. */
4441#define ECF_RETURNS_TWICE 32
4442/* Nonzero if this call replaces the current stack frame. */
4443#define ECF_SIBCALL 64
4444/* Nonzero if this is a call to "pure" function (like const function,
4445 but may read memory. */
4446#define ECF_PURE 128
4447/* Nonzero if this is a call to a function that returns with the stack
4448 pointer depressed. */
4449#define ECF_SP_DEPRESSED 256
4450/* Create libcall block around the call. */
4451#define ECF_LIBCALL_BLOCK 512
4452/* Function does not read or write memory (but may have side effects, so
4453 it does not necessarily fit ECF_CONST). */
4454#define ECF_NOVOPS 1024
4455
4456extern int flags_from_decl_or_type (tree);
4457extern int call_expr_flags (tree);
4458
4459extern int setjmp_call_p (tree);
4460extern bool alloca_call_p (tree);
4461extern bool must_pass_in_stack_var_size (enum machine_mode, tree);
4462extern bool must_pass_in_stack_var_size_or_pad (enum machine_mode, tree);
4463
4464/* In attribs.c. */
4465
4466/* Process the attributes listed in ATTRIBUTES and install them in *NODE,
4467 which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
4468 it should be modified in place; if a TYPE, a copy should be created
4469 unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
4470 information, in the form of a bitwise OR of flags in enum attribute_flags
4471 from tree.h. Depending on these flags, some attributes may be
4472 returned to be applied at a later stage (for example, to apply
4473 a decl attribute to the declaration rather than to its type). */
4474extern tree decl_attributes (tree *, tree, int);
4475
4476/* In integrate.c */
4477extern void set_decl_abstract_flags (tree, int);
4478extern void set_decl_origin_self (tree);
4479
4480/* In stor-layout.c */
4481extern void set_min_and_max_values_for_integral_type (tree, int, bool);
4482extern void fixup_signed_type (tree);
4483extern void internal_reference_types (void);
4484extern unsigned int update_alignment_for_field (record_layout_info, tree,
4485 unsigned int);
4486/* varasm.c */
4487extern void make_decl_rtl (tree);
4488extern void make_decl_one_only (tree);
4489extern int supports_one_only (void);
4490extern void resolve_unique_section (tree, int, int);
4491extern void mark_referenced (tree);
4492extern void mark_decl_referenced (tree);
4493extern void notice_global_symbol (tree);
4494extern void set_user_assembler_name (tree, const char *);
4495extern void process_pending_assemble_externals (void);
4496extern void finish_aliases_1 (void);
4497extern void finish_aliases_2 (void);
4498
4499/* In stmt.c */
4500extern void expand_computed_goto (tree);
4501extern bool parse_output_constraint (const char **, int, int, int,
4502 bool *, bool *, bool *);
4503extern bool parse_input_constraint (const char **, int, int, int, int,
4504 const char * const *, bool *, bool *);
4505extern void expand_asm_expr (tree);
4506extern tree resolve_asm_operand_names (tree, tree, tree);
4507extern void expand_case (tree);
4508extern void expand_decl (tree);
4509extern void expand_anon_union_decl (tree, tree, tree);
4510#ifdef HARD_CONST
4511/* Silly ifdef to avoid having all includers depend on hard-reg-set.h. */
4512extern tree tree_overlaps_hard_reg_set (tree, HARD_REG_SET *);
4513#endif
4514
4515/* In gimplify.c. */
4516extern tree create_artificial_label (void);
4517extern void gimplify_function_tree (tree);
4518extern const char *get_name (tree);
4519extern tree unshare_expr (tree);
4520extern void sort_case_labels (tree);
4521
4522/* If KIND=='I', return a suitable global initializer (constructor) name.
4523 If KIND=='D', return a suitable global clean-up (destructor) name. */
4524extern tree get_file_function_name (int);
4525
4526/* Interface of the DWARF2 unwind info support. */
4527
4528/* Generate a new label for the CFI info to refer to. */
4529
4530extern char *dwarf2out_cfi_label (void);
4531
4532/* Entry point to update the canonical frame address (CFA). */
4533
4534extern void dwarf2out_def_cfa (const char *, unsigned, HOST_WIDE_INT);
4535
4536/* Add the CFI for saving a register window. */
4537
4538extern void dwarf2out_window_save (const char *);
4539
4540/* Add a CFI to update the running total of the size of arguments pushed
4541 onto the stack. */
4542
4543extern void dwarf2out_args_size (const char *, HOST_WIDE_INT);
4544
4545/* Entry point for saving a register to the stack. */
4546
4547extern void dwarf2out_reg_save (const char *, unsigned, HOST_WIDE_INT);
4548
4549/* Entry point for saving the return address in the stack. */
4550
4551extern void dwarf2out_return_save (const char *, HOST_WIDE_INT);
4552
4553/* Entry point for saving the return address in a register. */
4554
4555extern void dwarf2out_return_reg (const char *, unsigned);
4556
4557/* Entry point for saving the first register into the second. */
4558
4559extern void dwarf2out_reg_save_reg (const char *, rtx, rtx);
4560
4561/* In tree-inline.c */
4562
4563/* The type of a set of already-visited pointers. Functions for creating
4564 and manipulating it are declared in pointer-set.h */
4565struct pointer_set_t;
4566
4567/* The type of a callback function for walking over tree structure. */
4568
4569typedef tree (*walk_tree_fn) (tree *, int *, void *);
4570extern tree walk_tree (tree*, walk_tree_fn, void*, struct pointer_set_t*);
4571extern tree walk_tree_without_duplicates (tree*, walk_tree_fn, void*);
4572
4573/* Assign the RTX to declaration. */
4574
4575extern void set_decl_rtl (tree, rtx);
4576extern void set_decl_incoming_rtl (tree, rtx);
4577
4578/* Enum and arrays used for tree allocation stats.
4579 Keep in sync with tree.c:tree_node_kind_names. */
4580typedef enum
4581{
4582 d_kind,
4583 t_kind,
4584 b_kind,
4585 s_kind,
4586 r_kind,
4587 e_kind,
4588 c_kind,
4589 id_kind,
4590 perm_list_kind,
4591 temp_list_kind,
4592 vec_kind,
4593 binfo_kind,
4594 phi_kind,
4595 ssa_name_kind,
4596 constr_kind,
4597 x_kind,
4598 lang_decl,
4599 lang_type,
4600 omp_clause_kind,
4601 all_kinds
4602} tree_node_kind;
4603
4604extern int tree_node_counts[];
4605extern int tree_node_sizes[];
4606
4607/* True if we are in gimple form and the actions of the folders need to
4608 be restricted. False if we are not in gimple form and folding is not
4609 restricted to creating gimple expressions. */
4610extern bool in_gimple_form;
4611
4612/* In tree-gimple.c. */
4613extern tree get_base_address (tree t);
4614
4615/* In tree-vectorizer.c. */
4616extern void vect_set_verbosity_level (const char *);
4617
4618struct tree_map GTY(())
4619{
4620 unsigned int hash;
4621 tree from;
4622 tree to;
4623};
4624
4625extern unsigned int tree_map_hash (const void *);
4626extern int tree_map_marked_p (const void *);
4627extern int tree_map_eq (const void *, const void *);
4628
4629/* In tree-ssa-address.c. */
4630extern tree tree_mem_ref_addr (tree, tree);
4631extern void copy_mem_ref_info (tree, tree);
4632
4633/* In tree-vrp.c */
4634extern bool ssa_name_nonzero_p (tree);
4635extern bool ssa_name_nonnegative_p (tree);
4636
4637/* In tree-object-size.c. */
4638extern void init_object_sizes (void);
4639extern void fini_object_sizes (void);
4640extern unsigned HOST_WIDE_INT compute_builtin_object_size (tree, int);
4641
4642/* In expr.c. */
4643extern unsigned HOST_WIDE_INT highest_pow2_factor (tree);
4644
4645#endif /* GCC_TREE_H */
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