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.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
28 #include "statistics.h"
31 /* Codes of tree nodes */
33 #define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM,
38 LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for
44 extern unsigned char tree_contains_struct[256][64];
45 #define CODE_CONTAINS_STRUCT(CODE, STRUCT) (tree_contains_struct[(CODE)][(STRUCT)])
47 /* Number of language-independent tree codes. */
48 #define NUM_TREE_CODES ((int) LAST_AND_UNUSED_TREE_CODE)
50 /* Tree code classes. */
52 /* Each tree_code has an associated code class represented by a
55 enum 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. */
70 /* Each tree code class has an associated string representation.
71 These must correspond to the tree_code_class entries. */
73 extern const char *const tree_code_class_strings[];
75 /* Returns the string representing CLASS. */
77 #define TREE_CODE_CLASS_STRING(CLASS)\
78 tree_code_class_strings[(int) (CLASS)]
80 #define MAX_TREE_CODES 256
81 extern const enum tree_code_class tree_code_type[];
82 #define TREE_CODE_CLASS(CODE) tree_code_type[(int) (CODE)]
84 /* Nonzero if CODE represents an exceptional code. */
86 #define EXCEPTIONAL_CLASS_P(CODE)\
87 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_exceptional)
89 /* Nonzero if CODE represents a constant. */
91 #define CONSTANT_CLASS_P(CODE)\
92 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_constant)
94 /* Nonzero if CODE represents a type. */
97 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_type)
99 /* Nonzero if CODE represents a declaration. */
101 #define DECL_P(CODE)\
102 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_declaration)
104 /* Nonzero if CODE represents a memory tag. */
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)
112 /* Nonzero if DECL represents a VAR_DECL or FUNCTION_DECL. */
114 #define VAR_OR_FUNCTION_DECL_P(DECL)\
115 (TREE_CODE (DECL) == VAR_DECL || TREE_CODE (DECL) == FUNCTION_DECL)
117 /* Nonzero if CODE represents a INDIRECT_REF. Keep these checks in
118 ascending code order. */
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)
125 /* Nonzero if CODE represents a reference. */
127 #define REFERENCE_CLASS_P(CODE)\
128 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_reference)
130 /* Nonzero if CODE represents a comparison. */
132 #define COMPARISON_CLASS_P(CODE)\
133 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_comparison)
135 /* Nonzero if CODE represents a unary arithmetic expression. */
137 #define UNARY_CLASS_P(CODE)\
138 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_unary)
140 /* Nonzero if CODE represents a binary arithmetic expression. */
142 #define BINARY_CLASS_P(CODE)\
143 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_binary)
145 /* Nonzero if CODE represents a statement expression. */
147 #define STATEMENT_CLASS_P(CODE)\
148 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_statement)
150 /* Nonzero if CODE represents any other expression. */
152 #define EXPRESSION_CLASS_P(CODE)\
153 (TREE_CODE_CLASS (TREE_CODE (CODE)) == tcc_expression)
155 /* Returns nonzero iff CODE represents a type or declaration. */
157 #define IS_TYPE_OR_DECL_P(CODE)\
158 (TYPE_P (CODE) || DECL_P (CODE))
160 /* Returns nonzero iff CLASS is the tree-code class of an
163 #define IS_EXPR_CODE_CLASS(CLASS)\
164 ((CLASS) >= tcc_reference && (CLASS) <= tcc_expression)
166 /* Returns nonzero iff NODE is an expression of some kind. */
168 #define EXPR_P(NODE) IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (NODE)))
170 /* Returns nonzero iff NODE is an OpenMP directive. */
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)
184 /* Number of argument-words in each kind of tree-node. */
186 extern const unsigned char tree_code_length[];
187 #define TREE_CODE_LENGTH(CODE) tree_code_length[(int) (CODE)]
189 /* Names of tree components. */
191 extern const char *const tree_code_name[];
193 /* A vectors of trees. */
195 DEF_VEC_ALLOC_P(tree,gc);
196 DEF_VEC_ALLOC_P(tree,heap);
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. */
209 /* Names for the above. */
210 extern const char *const built_in_class_names[4];
212 /* Codes that identify the various built in functions
213 so that expand_call can identify them quickly. */
215 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) ENUM,
216 enum built_in_function
218 #include "builtins.def"
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,
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,
234 /* Upper bound on non-language-specific builtins. */
239 /* Names for the above. */
240 extern const char * built_in_names[(int) END_BUILTINS];
242 /* Helper macros for math builtins. */
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)
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)
252 #define BUILTIN_SQRT_P(FN) \
253 ((FN) == BUILT_IN_SQRT || (FN) == BUILT_IN_SQRTF || (FN) == BUILT_IN_SQRTL)
255 #define BUILTIN_CBRT_P(FN) \
256 ((FN) == BUILT_IN_CBRT || (FN) == BUILT_IN_CBRTF || (FN) == BUILT_IN_CBRTL)
258 #define BUILTIN_ROOT_P(FN) (BUILTIN_SQRT_P (FN) || BUILTIN_CBRT_P (FN))
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
263 /* An array of _DECL trees for the above. */
264 extern GTY(()) tree built_in_decls[(int) END_BUILTINS];
265 extern GTY(()) tree implicit_built_in_decls[(int) END_BUILTINS];
267 /* In an OMP_CLAUSE node. */
269 /* Number of operands and names for each clause. */
270 extern unsigned const char omp_clause_num_ops[];
271 extern const char * const omp_clause_code_name[];
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. */
277 /* Clause zero is special-cased inside the parser
278 (c_parser_omp_variable_list). */
279 OMP_CLAUSE_ERROR = 0,
281 /* OpenMP clause: private (variable_list). */
284 /* OpenMP clause: shared (variable_list). */
287 /* OpenMP clause: firstprivate (variable_list). */
288 OMP_CLAUSE_FIRSTPRIVATE,
290 /* OpenMP clause: lastprivate (variable_list). */
291 OMP_CLAUSE_LASTPRIVATE,
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
298 Operand 3: OMP_CLAUSE_REDUCTION_PLACEHOLDER: A dummy VAR_DECL
299 placeholder used in OMP_CLAUSE_REDUCTION_MERGE. */
300 OMP_CLAUSE_REDUCTION,
302 /* OpenMP clause: copyin (variable_list). */
305 /* OpenMP clause: copyprivate (variable_list). */
306 OMP_CLAUSE_COPYPRIVATE,
308 /* OpenMP clause: if (scalar-expression). */
311 /* OpenMP clause: num_threads (integer-expression). */
312 OMP_CLAUSE_NUM_THREADS,
314 /* OpenMP clause: schedule. */
317 /* OpenMP clause: nowait. */
320 /* OpenMP clause: ordered. */
323 /* OpenMP clause: default. */
327 /* The definition of tree nodes fills the next several pages. */
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).
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. */
343 /* Every kind of tree node starts with this structure,
344 so all nodes have these fields.
346 See the accessor macros, defined below, for documentation of the
350 struct tree_common GTY(())
354 union tree_ann_d *ann;
356 ENUM_BITFIELD(tree_code) code : 8;
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;
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;
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;
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
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
397 CALL_EXPR_TAILCALL in CALL_EXPR
402 VAR_DECL, FUNCTION_DECL, CONSTRUCTOR, ADDR_EXPR
405 TREE_CONSTANT_OVERFLOW in
406 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
407 TREE_SYMBOL_REFERENCED in
410 TARGET_EXPR, WITH_CLEANUP_EXPR
413 EH_FILTER_MUST_NOT_THROW in EH_FILTER_EXPR
414 TYPE_REF_CAN_ALIAS_ALL in
415 POINTER_TYPE, REFERENCE_TYPE
420 INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
422 VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
425 TYPE_CACHED_VALUES_P in
427 SAVE_EXPR_RESOLVED_P in
429 OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE in
430 OMP_CLAUSE_LASTPRIVATE
431 OMP_CLAUSE_PRIVATE_DEBUG in
438 CALL_EXPR_RETURN_SLOT_OPT in
441 PARM_DECL, RESULT_DECL
446 OMP_PARALLEL_COMBINED in
469 TREE_THIS_VOLATILE in
487 TYPE_SIZES_GIMPLIFIED
496 BIT_FIELD_REF_UNSIGNED in
502 VAR_DECL, FUNCTION_DECL, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
508 expressions, IDENTIFIER_NODE
513 CALL_EXPR, FUNCTION_DECL
519 (ALIGN/MISALIGNED_)INDIRECT_REF, ARRAY_REF, ARRAY_RANGE_REF
526 IDENTIFIER_TRANSPARENT_ALIAS in
531 Used in tree traversals to mark visited nodes.
541 ... any expr or decl node
544 #define DEFTREESTRUCT(ENUM, NAME) ENUM,
545 enum tree_node_structure_enum {
546 #include "treestruct.def"
551 /* Define accessors for the fields that all tree nodes have
552 (though some fields are not used for all kinds of nodes). */
554 /* The tree-code says what kind of node it is.
555 Codes are defined in tree.def. */
556 #define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code)
557 #define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (VALUE))
559 /* When checking is enabled, errors will be generated if a tree node
560 is accessed incorrectly. The macros die with a fatal error. */
561 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
563 #define TREE_CHECK(T, CODE) __extension__ \
564 ({ const tree __t = (T); \
565 if (TREE_CODE (__t) != (CODE)) \
566 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
570 #define TREE_NOT_CHECK(T, CODE) __extension__ \
571 ({ const tree __t = (T); \
572 if (TREE_CODE (__t) == (CODE)) \
573 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
577 #define TREE_CHECK2(T, CODE1, CODE2) __extension__ \
578 ({ const tree __t = (T); \
579 if (TREE_CODE (__t) != (CODE1) \
580 && TREE_CODE (__t) != (CODE2)) \
581 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
582 (CODE1), (CODE2), 0); \
585 #define TREE_NOT_CHECK2(T, CODE1, CODE2) __extension__ \
586 ({ const tree __t = (T); \
587 if (TREE_CODE (__t) == (CODE1) \
588 || TREE_CODE (__t) == (CODE2)) \
589 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
590 (CODE1), (CODE2), 0); \
593 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
594 ({ const tree __t = (T); \
595 if (TREE_CODE (__t) != (CODE1) \
596 && TREE_CODE (__t) != (CODE2) \
597 && TREE_CODE (__t) != (CODE3)) \
598 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
599 (CODE1), (CODE2), (CODE3), 0); \
602 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) __extension__ \
603 ({ const tree __t = (T); \
604 if (TREE_CODE (__t) == (CODE1) \
605 || TREE_CODE (__t) == (CODE2) \
606 || TREE_CODE (__t) == (CODE3)) \
607 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
608 (CODE1), (CODE2), (CODE3), 0); \
611 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
612 ({ const tree __t = (T); \
613 if (TREE_CODE (__t) != (CODE1) \
614 && TREE_CODE (__t) != (CODE2) \
615 && TREE_CODE (__t) != (CODE3) \
616 && TREE_CODE (__t) != (CODE4)) \
617 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
618 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
621 #define NON_TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) __extension__ \
622 ({ const tree __t = (T); \
623 if (TREE_CODE (__t) == (CODE1) \
624 || TREE_CODE (__t) == (CODE2) \
625 || TREE_CODE (__t) == (CODE3) \
626 || TREE_CODE (__t) == (CODE4)) \
627 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
628 (CODE1), (CODE2), (CODE3), (CODE4), 0); \
631 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
632 ({ const tree __t = (T); \
633 if (TREE_CODE (__t) != (CODE1) \
634 && TREE_CODE (__t) != (CODE2) \
635 && TREE_CODE (__t) != (CODE3) \
636 && TREE_CODE (__t) != (CODE4) \
637 && TREE_CODE (__t) != (CODE5)) \
638 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
639 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
642 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) __extension__ \
643 ({ const tree __t = (T); \
644 if (TREE_CODE (__t) == (CODE1) \
645 || TREE_CODE (__t) == (CODE2) \
646 || TREE_CODE (__t) == (CODE3) \
647 || TREE_CODE (__t) == (CODE4) \
648 || TREE_CODE (__t) == (CODE5)) \
649 tree_not_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
650 (CODE1), (CODE2), (CODE3), (CODE4), (CODE5), 0);\
653 #define CONTAINS_STRUCT_CHECK(T, STRUCT) __extension__ \
654 ({ const tree __t = (T); \
655 if (tree_contains_struct[TREE_CODE(__t)][(STRUCT)] != 1) \
656 tree_contains_struct_check_failed (__t, (STRUCT), __FILE__, __LINE__, \
660 #define TREE_CLASS_CHECK(T, CLASS) __extension__ \
661 ({ const tree __t = (T); \
662 if (TREE_CODE_CLASS (TREE_CODE(__t)) != (CLASS)) \
663 tree_class_check_failed (__t, (CLASS), __FILE__, __LINE__, \
667 #define TREE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
668 ({ const tree __t = (T); \
669 if (TREE_CODE (__t) < (CODE1) || TREE_CODE (__t) > (CODE2)) \
670 tree_range_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
674 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) __extension__ \
675 ({ const tree __t = (T); \
676 if (TREE_CODE (__t) != OMP_CLAUSE) \
677 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
679 if (__t->omp_clause.code != (CODE)) \
680 omp_clause_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
684 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) __extension__ \
685 ({ const tree __t = (T); \
686 if (TREE_CODE (__t) != OMP_CLAUSE) \
687 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
689 if ((int) __t->omp_clause.code < (int) (CODE1) \
690 || (int) __t->omp_clause.code > (int) (CODE2)) \
691 omp_clause_range_check_failed (__t, __FILE__, __LINE__, \
692 __FUNCTION__, (CODE1), (CODE2)); \
695 /* These checks have to be special cased. */
696 #define EXPR_CHECK(T) __extension__ \
697 ({ const tree __t = (T); \
698 char const __c = TREE_CODE_CLASS (TREE_CODE (__t)); \
699 if (!IS_EXPR_CODE_CLASS (__c)) \
700 tree_class_check_failed (__t, tcc_expression, __FILE__, __LINE__, \
704 /* These checks have to be special cased. */
705 #define NON_TYPE_CHECK(T) __extension__ \
706 ({ const tree __t = (T); \
708 tree_not_class_check_failed (__t, tcc_type, __FILE__, __LINE__, \
712 #define TREE_VEC_ELT_CHECK(T, I) __extension__ \
713 (*({const tree __t = (T); \
714 const int __i = (I); \
715 if (TREE_CODE (__t) != TREE_VEC) \
716 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
718 if (__i < 0 || __i >= __t->vec.length) \
719 tree_vec_elt_check_failed (__i, __t->vec.length, \
720 __FILE__, __LINE__, __FUNCTION__); \
721 &__t->vec.a[__i]; }))
723 #define PHI_NODE_ELT_CHECK(t, i) __extension__ \
724 (*({const tree __t = t; \
725 const int __i = (i); \
726 if (TREE_CODE (__t) != PHI_NODE) \
727 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
729 if (__i < 0 || __i >= __t->phi.capacity) \
730 phi_node_elt_check_failed (__i, __t->phi.num_args, \
731 __FILE__, __LINE__, __FUNCTION__); \
732 &__t->phi.a[__i]; }))
734 #define OMP_CLAUSE_ELT_CHECK(t, i) __extension__ \
735 (*({const tree __t = t; \
736 const int __i = (i); \
737 if (TREE_CODE (__t) != OMP_CLAUSE) \
738 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, \
740 if (__i < 0 || __i >= omp_clause_num_ops [__t->omp_clause.code]) \
741 omp_clause_operand_check_failed (__i, __t, __FILE__, __LINE__, \
743 &__t->omp_clause.ops[__i]; }))
745 /* Special checks for TREE_OPERANDs. */
746 #define TREE_OPERAND_CHECK(T, I) __extension__ \
747 (*({const tree __t = EXPR_CHECK (T); \
748 const int __i = (I); \
749 if (__i < 0 || __i >= TREE_CODE_LENGTH (TREE_CODE (__t))) \
750 tree_operand_check_failed (__i, TREE_CODE (__t), \
751 __FILE__, __LINE__, __FUNCTION__); \
752 &__t->exp.operands[__i]; }))
754 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) __extension__ \
755 (*({const tree __t = (T); \
756 const int __i = (I); \
757 if (TREE_CODE (__t) != CODE) \
758 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0);\
759 if (__i < 0 || __i >= TREE_CODE_LENGTH (CODE)) \
760 tree_operand_check_failed (__i, (CODE), \
761 __FILE__, __LINE__, __FUNCTION__); \
762 &__t->exp.operands[__i]; }))
764 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) __extension__ \
766 ({const tree __t = (T); \
767 const int __i = (I); \
768 if (TREE_CODE (__t) != (CODE)) \
769 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, (CODE), 0); \
770 if (__i < 0 || __i >= TREE_CODE_LENGTH ((CODE))) \
771 tree_operand_check_failed (__i, (CODE), \
772 __FILE__, __LINE__, __FUNCTION__); \
773 &__t->exp.operands[__i]; }))
775 extern void tree_contains_struct_check_failed (const tree,
776 const enum tree_node_structure_enum,
777 const char *, int, const char *)
780 extern void tree_check_failed (const tree, const char *, int, const char *,
781 ...) ATTRIBUTE_NORETURN;
782 extern void tree_not_check_failed (const tree, const char *, int, const char *,
783 ...) ATTRIBUTE_NORETURN;
784 extern void tree_class_check_failed (const tree, const enum tree_code_class,
785 const char *, int, const char *)
787 extern void tree_range_check_failed (const tree, const char *, int,
788 const char *, enum tree_code,
790 extern void tree_not_class_check_failed (const tree,
791 const enum tree_code_class,
792 const char *, int, const char *)
794 extern void tree_vec_elt_check_failed (int, int, const char *,
797 extern void phi_node_elt_check_failed (int, int, const char *,
800 extern void tree_operand_check_failed (int, enum tree_code,
801 const char *, int, const char *)
803 extern void omp_clause_check_failed (const tree, const char *, int,
804 const char *, enum omp_clause_code)
806 extern void omp_clause_operand_check_failed (int, tree, const char *,
809 extern void omp_clause_range_check_failed (const tree, const char *, int,
810 const char *, enum omp_clause_code,
811 enum omp_clause_code)
814 #else /* not ENABLE_TREE_CHECKING, or not gcc */
816 #define CONTAINS_STRUCT_CHECK(T, ENUM) (T)
817 #define TREE_CHECK(T, CODE) (T)
818 #define TREE_NOT_CHECK(T, CODE) (T)
819 #define TREE_CHECK2(T, CODE1, CODE2) (T)
820 #define TREE_NOT_CHECK2(T, CODE1, CODE2) (T)
821 #define TREE_CHECK3(T, CODE1, CODE2, CODE3) (T)
822 #define TREE_NOT_CHECK3(T, CODE1, CODE2, CODE3) (T)
823 #define TREE_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
824 #define TREE_NOT_CHECK4(T, CODE1, CODE2, CODE3, CODE4) (T)
825 #define TREE_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
826 #define TREE_NOT_CHECK5(T, CODE1, CODE2, CODE3, CODE4, CODE5) (T)
827 #define TREE_CLASS_CHECK(T, CODE) (T)
828 #define TREE_RANGE_CHECK(T, CODE1, CODE2) (T)
829 #define EXPR_CHECK(T) (T)
830 #define NON_TYPE_CHECK(T) (T)
831 #define TREE_VEC_ELT_CHECK(T, I) ((T)->vec.a[I])
832 #define TREE_OPERAND_CHECK(T, I) ((T)->exp.operands[I])
833 #define TREE_OPERAND_CHECK_CODE(T, CODE, I) ((T)->exp.operands[I])
834 #define TREE_RTL_OPERAND_CHECK(T, CODE, I) (*(rtx *) &((T)->exp.operands[I]))
835 #define PHI_NODE_ELT_CHECK(T, i) ((T)->phi.a[i])
836 #define OMP_CLAUSE_ELT_CHECK(T, i) ((T)->omp_clause.ops[i])
837 #define OMP_CLAUSE_RANGE_CHECK(T, CODE1, CODE2) (T)
838 #define OMP_CLAUSE_SUBCODE_CHECK(T, CODE) (T)
842 #define TREE_BLOCK(NODE) (EXPR_CHECK (NODE)->exp.block)
844 #include "tree-check.h"
846 #define TYPE_CHECK(T) TREE_CLASS_CHECK (T, tcc_type)
847 #define DECL_MINIMAL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_MINIMAL)
848 #define TREE_MEMORY_TAG_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_MEMORY_TAG)
849 #define DECL_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_COMMON)
850 #define DECL_WRTL_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WRTL)
851 #define DECL_WITH_VIS_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_WITH_VIS)
852 #define DECL_NON_COMMON_CHECK(T) CONTAINS_STRUCT_CHECK (T, TS_DECL_NON_COMMON)
853 #define CST_CHECK(T) TREE_CLASS_CHECK (T, tcc_constant)
854 #define STMT_CHECK(T) TREE_CLASS_CHECK (T, tcc_statement)
855 #define FUNC_OR_METHOD_CHECK(T) TREE_CHECK2 (T, FUNCTION_TYPE, METHOD_TYPE)
856 #define PTR_OR_REF_CHECK(T) TREE_CHECK2 (T, POINTER_TYPE, REFERENCE_TYPE)
858 #define RECORD_OR_UNION_CHECK(T) \
859 TREE_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
860 #define NOT_RECORD_OR_UNION_CHECK(T) \
861 TREE_NOT_CHECK3 (T, RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE)
863 #define NUMERICAL_TYPE_CHECK(T) \
864 TREE_CHECK4 (T, INTEGER_TYPE, ENUMERAL_TYPE, BOOLEAN_TYPE, REAL_TYPE)
866 /* In all nodes that are expressions, this is the data type of the expression.
867 In POINTER_TYPE nodes, this is the type that the pointer points to.
868 In ARRAY_TYPE nodes, this is the type of the elements.
869 In VECTOR_TYPE nodes, this is the type of the elements. */
870 #define TREE_TYPE(NODE) ((NODE)->common.type)
872 /* Here is how primitive or already-canonicalized types' hash codes
874 #define TYPE_HASH(TYPE) (TYPE_UID (TYPE))
876 /* A simple hash function for an arbitrary tree node. This must not be
877 used in hash tables which are saved to a PCH. */
878 #define TREE_HASH(NODE) ((size_t) (NODE) & 0777777)
880 /* Nodes are chained together for many purposes.
881 Types are chained together to record them for being output to the debugger
882 (see the function `chain_type').
883 Decls in the same scope are chained together to record the contents
885 Statement nodes for successive statements used to be chained together.
886 Often lists of things are represented by TREE_LIST nodes that
887 are chained together. */
889 #define TREE_CHAIN(NODE) ((NODE)->common.chain)
891 /* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs
892 that don't change the machine mode. */
894 #define STRIP_NOPS(EXP) \
895 while ((TREE_CODE (EXP) == NOP_EXPR \
896 || TREE_CODE (EXP) == CONVERT_EXPR \
897 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
898 && TREE_OPERAND (EXP, 0) != error_mark_node \
899 && (TYPE_MODE (TREE_TYPE (EXP)) \
900 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
901 (EXP) = TREE_OPERAND (EXP, 0)
903 /* Like STRIP_NOPS, but don't let the signedness change either. */
905 #define STRIP_SIGN_NOPS(EXP) \
906 while ((TREE_CODE (EXP) == NOP_EXPR \
907 || TREE_CODE (EXP) == CONVERT_EXPR \
908 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
909 && TREE_OPERAND (EXP, 0) != error_mark_node \
910 && (TYPE_MODE (TREE_TYPE (EXP)) \
911 == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
912 && (TYPE_UNSIGNED (TREE_TYPE (EXP)) \
913 == TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
914 (EXP) = TREE_OPERAND (EXP, 0)
916 /* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
918 #define STRIP_TYPE_NOPS(EXP) \
919 while ((TREE_CODE (EXP) == NOP_EXPR \
920 || TREE_CODE (EXP) == CONVERT_EXPR \
921 || TREE_CODE (EXP) == NON_LVALUE_EXPR) \
922 && TREE_OPERAND (EXP, 0) != error_mark_node \
923 && (TREE_TYPE (EXP) \
924 == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
925 (EXP) = TREE_OPERAND (EXP, 0)
927 /* Remove unnecessary type conversions according to
928 tree_ssa_useless_type_conversion. */
930 #define STRIP_USELESS_TYPE_CONVERSION(EXP) \
931 while (tree_ssa_useless_type_conversion (EXP)) \
932 EXP = TREE_OPERAND (EXP, 0)
934 /* Nonzero if TYPE represents an integral type. Note that we do not
935 include COMPLEX types here. Keep these checks in ascending code
938 #define INTEGRAL_TYPE_P(TYPE) \
939 (TREE_CODE (TYPE) == ENUMERAL_TYPE \
940 || TREE_CODE (TYPE) == BOOLEAN_TYPE \
941 || TREE_CODE (TYPE) == INTEGER_TYPE)
943 /* Nonzero if TYPE represents a scalar floating-point type. */
945 #define SCALAR_FLOAT_TYPE_P(TYPE) (TREE_CODE (TYPE) == REAL_TYPE)
947 /* Nonzero if TYPE represents a complex floating-point type. */
949 #define COMPLEX_FLOAT_TYPE_P(TYPE) \
950 (TREE_CODE (TYPE) == COMPLEX_TYPE \
951 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
953 /* Nonzero if TYPE represents a vector floating-point type. */
955 #define VECTOR_FLOAT_TYPE_P(TYPE) \
956 (TREE_CODE (TYPE) == VECTOR_TYPE \
957 && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
959 /* Nonzero if TYPE represents a floating-point type, including complex
960 and vector floating-point types. The vector and complex check does
961 not use the previous two macros to enable early folding. */
963 #define FLOAT_TYPE_P(TYPE) \
964 (SCALAR_FLOAT_TYPE_P (TYPE) \
965 || ((TREE_CODE (TYPE) == COMPLEX_TYPE \
966 || TREE_CODE (TYPE) == VECTOR_TYPE) \
967 && SCALAR_FLOAT_TYPE_P (TREE_TYPE (TYPE))))
969 /* Nonzero if TYPE represents an aggregate (multi-component) type.
970 Keep these checks in ascending code order. */
972 #define AGGREGATE_TYPE_P(TYPE) \
973 (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
974 || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE)
976 /* Nonzero if TYPE represents a pointer or reference type.
977 (It should be renamed to INDIRECT_TYPE_P.) Keep these checks in
978 ascending code order. */
980 #define POINTER_TYPE_P(TYPE) \
981 (TREE_CODE (TYPE) == POINTER_TYPE || TREE_CODE (TYPE) == REFERENCE_TYPE)
983 /* Nonzero if this type is a complete type. */
984 #define COMPLETE_TYPE_P(NODE) (TYPE_SIZE (NODE) != NULL_TREE)
986 /* Nonzero if this type is the (possibly qualified) void type. */
987 #define VOID_TYPE_P(NODE) (TREE_CODE (NODE) == VOID_TYPE)
989 /* Nonzero if this type is complete or is cv void. */
990 #define COMPLETE_OR_VOID_TYPE_P(NODE) \
991 (COMPLETE_TYPE_P (NODE) || VOID_TYPE_P (NODE))
993 /* Nonzero if this type is complete or is an array with unspecified bound. */
994 #define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
995 (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
998 /* Define many boolean fields that all tree nodes have. */
1000 /* In VAR_DECL nodes, nonzero means address of this is needed.
1001 So it cannot be in a register.
1002 In a FUNCTION_DECL, nonzero means its address is needed.
1003 So it must be compiled even if it is an inline function.
1004 In a FIELD_DECL node, it means that the programmer is permitted to
1005 construct the address of this field. This is used for aliasing
1006 purposes: see record_component_aliases.
1007 In CONSTRUCTOR nodes, it means object constructed must be in memory.
1008 In LABEL_DECL nodes, it means a goto for this label has been seen
1009 from a place outside all binding contours that restore stack levels.
1010 In ..._TYPE nodes, it means that objects of this type must
1011 be fully addressable. This means that pieces of this
1012 object cannot go into register parameters, for example.
1013 In IDENTIFIER_NODEs, this means that some extern decl for this name
1014 had its address taken. That matters for inline functions. */
1015 #define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag)
1017 /* Set on a CALL_EXPR if the call is in a tail position, ie. just before the
1018 exit of a function. Calls for which this is true are candidates for tail
1019 call optimizations. */
1020 #define CALL_EXPR_TAILCALL(NODE) (CALL_EXPR_CHECK(NODE)->common.addressable_flag)
1022 /* In a VAR_DECL, nonzero means allocate static storage.
1023 In a FUNCTION_DECL, nonzero if function has been defined.
1024 In a CONSTRUCTOR, nonzero means allocate static storage.
1026 ??? This is also used in lots of other nodes in unclear ways which
1027 should be cleaned up some day. */
1028 #define TREE_STATIC(NODE) ((NODE)->common.static_flag)
1030 /* In a TARGET_EXPR, WITH_CLEANUP_EXPR, means that the pertinent cleanup
1031 should only be executed if an exception is thrown, not on normal exit
1033 #define CLEANUP_EH_ONLY(NODE) ((NODE)->common.static_flag)
1035 /* In an expr node (usually a conversion) this means the node was made
1036 implicitly and should not lead to any sort of warning. In a decl node,
1037 warnings concerning the decl should be suppressed. This is used at
1038 least for used-before-set warnings, and it set after one warning is
1040 #define TREE_NO_WARNING(NODE) ((NODE)->common.nowarning_flag)
1042 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST this means
1043 there was an overflow in folding. This is distinct from
1044 TREE_OVERFLOW because ANSI C requires a diagnostic when overflows
1045 occur in constant expressions. */
1046 #define TREE_CONSTANT_OVERFLOW(NODE) (CST_CHECK (NODE)->common.static_flag)
1048 /* In an IDENTIFIER_NODE, this means that assemble_name was called with
1049 this string as an argument. */
1050 #define TREE_SYMBOL_REFERENCED(NODE) \
1051 (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
1053 /* Nonzero in a pointer or reference type means the data pointed to
1054 by this type can alias anything. */
1055 #define TYPE_REF_CAN_ALIAS_ALL(NODE) \
1056 (PTR_OR_REF_CHECK (NODE)->common.static_flag)
1058 /* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
1059 there was an overflow in folding, and no warning has been issued
1060 for this subexpression. TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW,
1061 but not vice versa. */
1063 #define TREE_OVERFLOW(NODE) (CST_CHECK (NODE)->common.public_flag)
1065 /* In a VAR_DECL or FUNCTION_DECL,
1066 nonzero means name is to be accessible from outside this module.
1067 In an IDENTIFIER_NODE, nonzero means an external declaration
1068 accessible from outside this module was previously seen
1069 for this name in an inner scope. */
1070 #define TREE_PUBLIC(NODE) ((NODE)->common.public_flag)
1072 /* In a _TYPE, indicates whether TYPE_CACHED_VALUES contains a vector
1073 of cached values, or is something else. */
1074 #define TYPE_CACHED_VALUES_P(NODE) (TYPE_CHECK(NODE)->common.public_flag)
1076 /* In a SAVE_EXPR, indicates that the original expression has already
1077 been substituted with a VAR_DECL that contains the value. */
1078 #define SAVE_EXPR_RESOLVED_P(NODE) \
1079 (TREE_CHECK (NODE, SAVE_EXPR)->common.public_flag)
1081 /* In any expression, decl, or constant, nonzero means it has side effects or
1082 reevaluation of the whole expression could produce a different value.
1083 This is set if any subexpression is a function call, a side effect or a
1084 reference to a volatile variable. In a ..._DECL, this is set only if the
1085 declaration said `volatile'. This will never be set for a constant. */
1086 #define TREE_SIDE_EFFECTS(NODE) \
1087 (NON_TYPE_CHECK (NODE)->common.side_effects_flag)
1089 /* In a LABEL_DECL, nonzero means this label had its address taken
1090 and therefore can never be deleted and is a jump target for
1092 #define FORCED_LABEL(NODE) ((NODE)->common.side_effects_flag)
1094 /* Nonzero means this expression is volatile in the C sense:
1095 its address should be of type `volatile WHATEVER *'.
1096 In other words, the declared item is volatile qualified.
1097 This is used in _DECL nodes and _REF nodes.
1098 On a FUNCTION_DECL node, this means the function does not
1099 return normally. This is the same effect as setting
1100 the attribute noreturn on the function in C.
1102 In a ..._TYPE node, means this type is volatile-qualified.
1103 But use TYPE_VOLATILE instead of this macro when the node is a type,
1104 because eventually we may make that a different bit.
1106 If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */
1107 #define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag)
1109 /* Nonzero means this node will not trap. In an INDIRECT_REF, means
1110 accessing the memory pointed to won't generate a trap. However,
1111 this only applies to an object when used appropriately: it doesn't
1112 mean that writing a READONLY mem won't trap. Similarly for
1113 ALIGN_INDIRECT_REF and MISALIGNED_INDIRECT_REF.
1115 In ARRAY_REF and ARRAY_RANGE_REF means that we know that the index
1116 (or slice of the array) always belongs to the range of the array.
1117 I.e. that the access will not trap, provided that the access to
1118 the base to the array will not trap. */
1119 #define TREE_THIS_NOTRAP(NODE) ((NODE)->common.nothrow_flag)
1121 /* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node,
1122 nonzero means it may not be the lhs of an assignment. */
1123 #define TREE_READONLY(NODE) (NON_TYPE_CHECK (NODE)->common.readonly_flag)
1125 /* Nonzero if NODE is a _DECL with TREE_READONLY set. */
1126 #define TREE_READONLY_DECL_P(NODE)\
1127 (DECL_P (NODE) && TREE_READONLY (NODE))
1129 /* Value of expression is constant. Always on in all ..._CST nodes. May
1130 also appear in an expression or decl where the value is constant. */
1131 #define TREE_CONSTANT(NODE) (NON_TYPE_CHECK (NODE)->common.constant_flag)
1133 /* Nonzero if NODE, a type, has had its sizes gimplified. */
1134 #define TYPE_SIZES_GIMPLIFIED(NODE) (TYPE_CHECK (NODE)->common.constant_flag)
1136 /* In a decl (most significantly a FIELD_DECL), means an unsigned field. */
1137 #define DECL_UNSIGNED(NODE) (DECL_COMMON_CHECK (NODE)->common.unsigned_flag)
1139 /* In a BIT_FIELD_REF, means the bitfield is to be interpreted as unsigned. */
1140 #define BIT_FIELD_REF_UNSIGNED(NODE) \
1141 (BIT_FIELD_REF_CHECK (NODE)->common.unsigned_flag)
1143 /* In integral and pointer types, means an unsigned type. */
1144 #define TYPE_UNSIGNED(NODE) (TYPE_CHECK (NODE)->common.unsigned_flag)
1146 #define TYPE_TRAP_SIGNED(NODE) \
1147 (flag_trapv && ! TYPE_UNSIGNED (NODE))
1149 /* Nonzero in a VAR_DECL means assembler code has been written.
1150 Nonzero in a FUNCTION_DECL means that the function has been compiled.
1151 This is interesting in an inline function, since it might not need
1152 to be compiled separately.
1153 Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE
1154 if the sdb debugging info for the type has been written.
1155 In a BLOCK node, nonzero if reorder_blocks has already seen this block.
1156 In an SSA_NAME node, nonzero if the SSA_NAME occurs in an abnormal
1158 #define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag)
1160 /* Nonzero in a _DECL if the name is used in its scope.
1161 Nonzero in an expr node means inhibit warning if value is unused.
1162 In IDENTIFIER_NODEs, this means that some extern decl for this name
1164 In a BLOCK, this means that the block contains variables that are used. */
1165 #define TREE_USED(NODE) ((NODE)->common.used_flag)
1167 /* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
1168 an exception. In a CALL_EXPR, nonzero means the call cannot throw. */
1169 #define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
1171 /* In a CALL_EXPR, means that it's safe to use the target of the call
1172 expansion as the return slot for a call that returns in memory. */
1173 #define CALL_EXPR_RETURN_SLOT_OPT(NODE) ((NODE)->common.private_flag)
1175 /* In a RESULT_DECL or PARM_DECL, means that it is passed by invisible
1176 reference (and the TREE_TYPE is a pointer to the true type). */
1177 #define DECL_BY_REFERENCE(NODE) (DECL_COMMON_CHECK (NODE)->common.private_flag)
1179 /* In a CALL_EXPR, means that the call is the jump from a thunk to the
1180 thunked-to function. */
1181 #define CALL_FROM_THUNK_P(NODE) (CALL_EXPR_CHECK (NODE)->common.protected_flag)
1183 /* In a type, nonzero means that all objects of the type are guaranteed by the
1184 language or front-end to be properly aligned, so we can indicate that a MEM
1185 of this type is aligned at least to the alignment of the type, even if it
1186 doesn't appear that it is. We see this, for example, in object-oriented
1187 languages where a tag field may show this is an object of a more-aligned
1188 variant of the more generic type.
1190 In an SSA_NAME node, nonzero if the SSA_NAME node is on the SSA_NAME
1192 #define TYPE_ALIGN_OK(NODE) (TYPE_CHECK (NODE)->common.nothrow_flag)
1194 /* Used in classes in C++. */
1195 #define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
1196 /* Used in classes in C++.
1197 In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */
1198 #define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag)
1200 /* Nonzero in a _DECL if the use of the name is defined as a
1201 deprecated feature by __attribute__((deprecated)). */
1202 #define TREE_DEPRECATED(NODE) \
1203 ((NODE)->common.deprecated_flag)
1205 /* Nonzero in an IDENTIFIER_NODE if the name is a local alias, whose
1206 uses are to be substituted for uses of the TREE_CHAINed identifier. */
1207 #define IDENTIFIER_TRANSPARENT_ALIAS(NODE) \
1208 (IDENTIFIER_NODE_CHECK (NODE)->common.deprecated_flag)
1210 /* Value of expression is function invariant. A strict subset of
1211 TREE_CONSTANT, such an expression is constant over any one function
1212 invocation, though not across different invocations. May appear in
1213 any expression node. */
1214 #define TREE_INVARIANT(NODE) ((NODE)->common.invariant_flag)
1216 /* These flags are available for each language front end to use internally. */
1217 #define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
1218 #define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
1219 #define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2)
1220 #define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3)
1221 #define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4)
1222 #define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5)
1223 #define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6)
1225 /* Define additional fields and accessors for nodes representing constants. */
1227 /* In an INTEGER_CST node. These two together make a 2-word integer.
1228 If the data type is signed, the value is sign-extended to 2 words
1229 even though not all of them may really be in use.
1230 In an unsigned constant shorter than 2 words, the extra bits are 0. */
1231 #define TREE_INT_CST(NODE) (INTEGER_CST_CHECK (NODE)->int_cst.int_cst)
1232 #define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
1233 #define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
1235 #define INT_CST_LT(A, B) \
1236 (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
1237 || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
1238 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1240 #define INT_CST_LT_UNSIGNED(A, B) \
1241 (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1242 < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1243 || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
1244 == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
1245 && TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
1247 struct tree_int_cst GTY(())
1249 struct tree_common common;
1253 /* In a REAL_CST node. struct real_value is an opaque entity, with
1254 manipulators defined in real.h. We don't want tree.h depending on
1255 real.h and transitively on tm.h. */
1258 #define TREE_REAL_CST_PTR(NODE) (REAL_CST_CHECK (NODE)->real_cst.real_cst_ptr)
1259 #define TREE_REAL_CST(NODE) (*TREE_REAL_CST_PTR (NODE))
1261 struct tree_real_cst GTY(())
1263 struct tree_common common;
1264 struct real_value * real_cst_ptr;
1267 /* In a STRING_CST */
1268 #define TREE_STRING_LENGTH(NODE) (STRING_CST_CHECK (NODE)->string.length)
1269 #define TREE_STRING_POINTER(NODE) \
1270 ((const char *)(STRING_CST_CHECK (NODE)->string.str))
1272 struct tree_string GTY(())
1274 struct tree_common common;
1279 /* In a COMPLEX_CST node. */
1280 #define TREE_REALPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.real)
1281 #define TREE_IMAGPART(NODE) (COMPLEX_CST_CHECK (NODE)->complex.imag)
1283 struct tree_complex GTY(())
1285 struct tree_common common;
1290 /* In a VECTOR_CST node. */
1291 #define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
1293 struct tree_vector GTY(())
1295 struct tree_common common;
1301 /* Define fields and accessors for some special-purpose tree nodes. */
1303 #define IDENTIFIER_LENGTH(NODE) \
1304 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
1305 #define IDENTIFIER_POINTER(NODE) \
1306 ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
1307 #define IDENTIFIER_HASH_VALUE(NODE) \
1308 (IDENTIFIER_NODE_CHECK (NODE)->identifier.id.hash_value)
1310 /* Translate a hash table identifier pointer to a tree_identifier
1311 pointer, and vice versa. */
1313 #define HT_IDENT_TO_GCC_IDENT(NODE) \
1314 ((tree) ((char *) (NODE) - sizeof (struct tree_common)))
1315 #define GCC_IDENT_TO_HT_IDENT(NODE) (&((struct tree_identifier *) (NODE))->id)
1317 struct tree_identifier GTY(())
1319 struct tree_common common;
1320 struct ht_identifier id;
1323 /* In a TREE_LIST node. */
1324 #define TREE_PURPOSE(NODE) (TREE_LIST_CHECK (NODE)->list.purpose)
1325 #define TREE_VALUE(NODE) (TREE_LIST_CHECK (NODE)->list.value)
1327 struct tree_list GTY(())
1329 struct tree_common common;
1334 /* In a TREE_VEC node. */
1335 #define TREE_VEC_LENGTH(NODE) (TREE_VEC_CHECK (NODE)->vec.length)
1336 #define TREE_VEC_END(NODE) \
1337 ((void) TREE_VEC_CHECK (NODE), &((NODE)->vec.a[(NODE)->vec.length]))
1339 #define TREE_VEC_ELT(NODE,I) TREE_VEC_ELT_CHECK (NODE, I)
1341 struct tree_vec GTY(())
1343 struct tree_common common;
1345 tree GTY ((length ("TREE_VEC_LENGTH ((tree)&%h)"))) a[1];
1348 /* In a CONSTRUCTOR node. */
1349 #define CONSTRUCTOR_ELTS(NODE) (CONSTRUCTOR_CHECK (NODE)->constructor.elts)
1351 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding the
1352 value of each element (stored within VAL). IX must be a scratch variable
1353 of unsigned integer type. */
1354 #define FOR_EACH_CONSTRUCTOR_VALUE(V, IX, VAL) \
1355 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1357 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1361 /* Iterate through the vector V of CONSTRUCTOR_ELT elements, yielding both
1362 the value of each element (stored within VAL) and its index (stored
1363 within INDEX). IX must be a scratch variable of unsigned integer type. */
1364 #define FOR_EACH_CONSTRUCTOR_ELT(V, IX, INDEX, VAL) \
1365 for (IX = 0; (IX >= VEC_length (constructor_elt, V)) \
1367 : ((VAL = VEC_index (constructor_elt, V, IX)->value), \
1368 (INDEX = VEC_index (constructor_elt, V, IX)->index), \
1372 /* Append a new constructor element to V, with the specified INDEX and VAL. */
1373 #define CONSTRUCTOR_APPEND_ELT(V, INDEX, VALUE) \
1375 constructor_elt *_ce___ = VEC_safe_push (constructor_elt, gc, V, NULL); \
1376 _ce___->index = INDEX; \
1377 _ce___->value = VALUE; \
1380 /* A single element of a CONSTRUCTOR. VALUE holds the actual value of the
1381 element. INDEX can optionally design the position of VALUE: in arrays,
1382 it is the index where VALUE has to be placed; in structures, it is the
1383 FIELD_DECL of the member. */
1384 typedef struct constructor_elt_d GTY(())
1390 DEF_VEC_O(constructor_elt);
1391 DEF_VEC_ALLOC_O(constructor_elt,gc);
1393 struct tree_constructor GTY(())
1395 struct tree_common common;
1396 VEC(constructor_elt,gc) *elts;
1399 /* Define fields and accessors for some nodes that represent expressions. */
1401 /* Nonzero if NODE is an empty statement (NOP_EXPR <0>). */
1402 #define IS_EMPTY_STMT(NODE) (TREE_CODE (NODE) == NOP_EXPR \
1403 && VOID_TYPE_P (TREE_TYPE (NODE)) \
1404 && integer_zerop (TREE_OPERAND (NODE, 0)))
1406 /* In ordinary expression nodes. */
1407 #define TREE_OPERAND(NODE, I) TREE_OPERAND_CHECK (NODE, I)
1408 #define TREE_COMPLEXITY(NODE) (EXPR_CHECK (NODE)->exp.complexity)
1410 /* In a LOOP_EXPR node. */
1411 #define LOOP_EXPR_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_EXPR, 0)
1413 #ifdef USE_MAPPED_LOCATION
1414 /* The source location of this expression. Non-tree_exp nodes such as
1415 decls and constants can be shared among multiple locations, so
1417 #define EXPR_LOCATION(NODE) \
1418 (EXPR_P (NODE) ? (NODE)->exp.locus : UNKNOWN_LOCATION)
1419 #define SET_EXPR_LOCATION(NODE, FROM) \
1420 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1421 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCATION (NODE) != UNKNOWN_LOCATION)
1422 /* EXPR_LOCUS and SET_EXPR_LOCUS are deprecated. */
1423 #define EXPR_LOCUS(NODE) \
1424 (EXPR_P (NODE) ? &(NODE)->exp.locus : (location_t *)NULL)
1425 #define SET_EXPR_LOCUS(NODE, FROM) \
1426 do { source_location *loc_tmp = FROM; \
1427 EXPR_CHECK (NODE)->exp.locus \
1428 = loc_tmp == NULL ? UNKNOWN_LOCATION : *loc_tmp; } while (0)
1429 #define EXPR_FILENAME(NODE) \
1430 LOCATION_FILE (EXPR_CHECK (NODE)->exp.locus)
1431 #define EXPR_LINENO(NODE) \
1432 LOCATION_LINE (EXPR_CHECK (NODE)->exp.locus)
1434 /* The source location of this expression. Non-tree_exp nodes such as
1435 decls and constants can be shared among multiple locations, so
1437 #define EXPR_LOCUS(NODE) \
1438 (EXPR_P (NODE) ? (NODE)->exp.locus : (location_t *)NULL)
1439 #define SET_EXPR_LOCUS(NODE, FROM) \
1440 (EXPR_CHECK (NODE)->exp.locus = (FROM))
1441 #define SET_EXPR_LOCATION(NODE, FROM) annotate_with_locus (NODE, FROM)
1442 #define EXPR_FILENAME(NODE) \
1443 (EXPR_CHECK (NODE)->exp.locus->file)
1444 #define EXPR_LINENO(NODE) \
1445 (EXPR_CHECK (NODE)->exp.locus->line)
1446 #define EXPR_HAS_LOCATION(NODE) (EXPR_LOCUS (NODE) != NULL)
1447 #define EXPR_LOCATION(NODE) \
1448 (EXPR_HAS_LOCATION(NODE) ? *(NODE)->exp.locus : UNKNOWN_LOCATION)
1451 /* In a TARGET_EXPR node. */
1452 #define TARGET_EXPR_SLOT(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 0)
1453 #define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 1)
1454 #define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND_CHECK_CODE (NODE, TARGET_EXPR, 2)
1456 /* DECL_EXPR accessor. This gives access to the DECL associated with
1457 the given declaration statement. */
1458 #define DECL_EXPR_DECL(NODE) TREE_OPERAND (DECL_EXPR_CHECK (NODE), 0)
1460 #define EXIT_EXPR_COND(NODE) TREE_OPERAND (EXIT_EXPR_CHECK (NODE), 0)
1462 /* SWITCH_EXPR accessors. These give access to the condition, body and
1463 original condition type (before any compiler conversions)
1464 of the switch statement, respectively. */
1465 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 0)
1466 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 1)
1467 #define SWITCH_LABELS(NODE) TREE_OPERAND (SWITCH_EXPR_CHECK (NODE), 2)
1469 /* CASE_LABEL_EXPR accessors. These give access to the high and low values
1470 of a case label, respectively. */
1471 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 0)
1472 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 1)
1473 #define CASE_LABEL(NODE) TREE_OPERAND (CASE_LABEL_EXPR_CHECK (NODE), 2)
1475 /* The operands of a TARGET_MEM_REF. */
1476 #define TMR_SYMBOL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 0))
1477 #define TMR_BASE(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 1))
1478 #define TMR_INDEX(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 2))
1479 #define TMR_STEP(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 3))
1480 #define TMR_OFFSET(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 4))
1481 #define TMR_ORIGINAL(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 5))
1482 #define TMR_TAG(NODE) (TREE_OPERAND (TARGET_MEM_REF_CHECK (NODE), 6))
1484 /* The operands of a BIND_EXPR. */
1485 #define BIND_EXPR_VARS(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 0))
1486 #define BIND_EXPR_BODY(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 1))
1487 #define BIND_EXPR_BLOCK(NODE) (TREE_OPERAND (BIND_EXPR_CHECK (NODE), 2))
1489 /* GOTO_EXPR accessor. This gives access to the label associated with
1490 a goto statement. */
1491 #define GOTO_DESTINATION(NODE) TREE_OPERAND ((NODE), 0)
1493 /* ASM_EXPR accessors. ASM_STRING returns a STRING_CST for the
1494 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1495 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1497 #define ASM_STRING(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 0)
1498 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 1)
1499 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 2)
1500 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_EXPR_CHECK (NODE), 3)
1501 /* Nonzero if we want to create an ASM_INPUT instead of an
1502 ASM_OPERAND with no operands. */
1503 #define ASM_INPUT_P(NODE) (TREE_STATIC (NODE))
1504 #define ASM_VOLATILE_P(NODE) (TREE_PUBLIC (NODE))
1506 /* COND_EXPR accessors. */
1507 #define COND_EXPR_COND(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 0))
1508 #define COND_EXPR_THEN(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 1))
1509 #define COND_EXPR_ELSE(NODE) (TREE_OPERAND (COND_EXPR_CHECK (NODE), 2))
1511 /* LABEL_EXPR accessor. This gives access to the label associated with
1512 the given label expression. */
1513 #define LABEL_EXPR_LABEL(NODE) TREE_OPERAND (LABEL_EXPR_CHECK (NODE), 0)
1515 /* VDEF_EXPR accessors are specified in tree-flow.h, along with the other
1516 accessors for SSA operands. */
1518 /* CATCH_EXPR accessors. */
1519 #define CATCH_TYPES(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 0)
1520 #define CATCH_BODY(NODE) TREE_OPERAND (CATCH_EXPR_CHECK (NODE), 1)
1522 /* EH_FILTER_EXPR accessors. */
1523 #define EH_FILTER_TYPES(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 0)
1524 #define EH_FILTER_FAILURE(NODE) TREE_OPERAND (EH_FILTER_EXPR_CHECK (NODE), 1)
1525 #define EH_FILTER_MUST_NOT_THROW(NODE) TREE_STATIC (EH_FILTER_EXPR_CHECK (NODE))
1527 /* OBJ_TYPE_REF accessors. */
1528 #define OBJ_TYPE_REF_EXPR(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 0)
1529 #define OBJ_TYPE_REF_OBJECT(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 1)
1530 #define OBJ_TYPE_REF_TOKEN(NODE) TREE_OPERAND (OBJ_TYPE_REF_CHECK (NODE), 2)
1532 /* ASSERT_EXPR accessors. */
1533 #define ASSERT_EXPR_VAR(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 0)
1534 #define ASSERT_EXPR_COND(NODE) TREE_OPERAND (ASSERT_EXPR_CHECK (NODE), 1)
1536 /* OpenMP directive and clause accessors. */
1538 #define OMP_BODY(NODE) \
1539 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_CRITICAL), 0)
1540 #define OMP_CLAUSES(NODE) \
1541 TREE_OPERAND (TREE_RANGE_CHECK (NODE, OMP_PARALLEL, OMP_SINGLE), 1)
1543 #define OMP_PARALLEL_BODY(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 0)
1544 #define OMP_PARALLEL_CLAUSES(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 1)
1545 #define OMP_PARALLEL_FN(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 2)
1546 #define OMP_PARALLEL_DATA_ARG(NODE) TREE_OPERAND (OMP_PARALLEL_CHECK (NODE), 3)
1548 #define OMP_FOR_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 0)
1549 #define OMP_FOR_CLAUSES(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 1)
1550 #define OMP_FOR_INIT(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 2)
1551 #define OMP_FOR_COND(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 3)
1552 #define OMP_FOR_INCR(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 4)
1553 #define OMP_FOR_PRE_BODY(NODE) TREE_OPERAND (OMP_FOR_CHECK (NODE), 5)
1555 #define OMP_SECTIONS_BODY(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 0)
1556 #define OMP_SECTIONS_CLAUSES(NODE) TREE_OPERAND (OMP_SECTIONS_CHECK (NODE), 1)
1558 #define OMP_SECTION_BODY(NODE) TREE_OPERAND (OMP_SECTION_CHECK (NODE), 0)
1560 #define OMP_SINGLE_BODY(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 0)
1561 #define OMP_SINGLE_CLAUSES(NODE) TREE_OPERAND (OMP_SINGLE_CHECK (NODE), 1)
1563 #define OMP_MASTER_BODY(NODE) TREE_OPERAND (OMP_MASTER_CHECK (NODE), 0)
1565 #define OMP_ORDERED_BODY(NODE) TREE_OPERAND (OMP_ORDERED_CHECK (NODE), 0)
1567 #define OMP_CRITICAL_BODY(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 0)
1568 #define OMP_CRITICAL_NAME(NODE) TREE_OPERAND (OMP_CRITICAL_CHECK (NODE), 1)
1570 #define OMP_CLAUSE_CHAIN(NODE) TREE_CHAIN (OMP_CLAUSE_CHECK (NODE))
1571 #define OMP_CLAUSE_DECL(NODE) \
1572 OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
1573 OMP_CLAUSE_PRIVATE, \
1574 OMP_CLAUSE_COPYPRIVATE), 0)
1576 /* True on an OMP_SECTION statement that was the last lexical member.
1577 This status is meaningful in the implementation of lastprivate. */
1578 #define OMP_SECTION_LAST(NODE) \
1579 TREE_PRIVATE (OMP_SECTION_CHECK (NODE))
1581 /* True on an OMP_RETURN statement if the return does not require a
1582 thread synchronization via some sort of barrier. The exact barrier
1583 that would otherwise be emitted is dependent on the OMP statement
1584 with which this return is associated. */
1585 #define OMP_RETURN_NOWAIT(NODE) \
1586 TREE_PRIVATE (OMP_RETURN_CHECK (NODE))
1588 /* True on an OMP_PARALLEL statement if it represents an explicit
1589 combined parallel work-sharing constructs. */
1590 #define OMP_PARALLEL_COMBINED(NODE) \
1591 TREE_PRIVATE (OMP_PARALLEL_CHECK (NODE))
1593 /* True on a PRIVATE clause if its decl is kept around for debugging
1594 information only and its DECL_VALUE_EXPR is supposed to point
1595 to what it has been remapped to. */
1596 #define OMP_CLAUSE_PRIVATE_DEBUG(NODE) \
1597 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PRIVATE))
1599 /* True on a LASTPRIVATE clause if a FIRSTPRIVATE clause for the same
1600 decl is present in the chain. */
1601 #define OMP_CLAUSE_LASTPRIVATE_FIRSTPRIVATE(NODE) \
1602 TREE_PUBLIC (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_LASTPRIVATE))
1604 #define OMP_CLAUSE_IF_EXPR(NODE) \
1605 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_IF), 0)
1606 #define OMP_CLAUSE_NUM_THREADS_EXPR(NODE) \
1607 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_NUM_THREADS),0)
1608 #define OMP_CLAUSE_SCHEDULE_CHUNK_EXPR(NODE) \
1609 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE), 0)
1611 #define OMP_CLAUSE_REDUCTION_CODE(NODE) \
1612 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION)->omp_clause.subcode.reduction_code)
1613 #define OMP_CLAUSE_REDUCTION_INIT(NODE) \
1614 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 1)
1615 #define OMP_CLAUSE_REDUCTION_MERGE(NODE) \
1616 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 2)
1617 #define OMP_CLAUSE_REDUCTION_PLACEHOLDER(NODE) \
1618 OMP_CLAUSE_OPERAND (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_REDUCTION), 3)
1620 enum omp_clause_schedule_kind
1622 OMP_CLAUSE_SCHEDULE_STATIC,
1623 OMP_CLAUSE_SCHEDULE_DYNAMIC,
1624 OMP_CLAUSE_SCHEDULE_GUIDED,
1625 OMP_CLAUSE_SCHEDULE_RUNTIME
1628 #define OMP_CLAUSE_SCHEDULE_KIND(NODE) \
1629 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_SCHEDULE)->omp_clause.subcode.schedule_kind)
1631 enum omp_clause_default_kind
1633 OMP_CLAUSE_DEFAULT_UNSPECIFIED,
1634 OMP_CLAUSE_DEFAULT_SHARED,
1635 OMP_CLAUSE_DEFAULT_NONE,
1636 OMP_CLAUSE_DEFAULT_PRIVATE
1639 #define OMP_CLAUSE_DEFAULT_KIND(NODE) \
1640 (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEFAULT)->omp_clause.subcode.default_kind)
1642 struct tree_exp GTY(())
1644 struct tree_common common;
1648 tree GTY ((special ("tree_exp"),
1649 desc ("TREE_CODE ((tree) &%0)")))
1653 /* SSA_NAME accessors. */
1655 /* Returns the variable being referenced. Once released, this is the
1656 only field that can be relied upon. */
1657 #define SSA_NAME_VAR(NODE) SSA_NAME_CHECK (NODE)->ssa_name.var
1659 /* Returns the statement which defines this reference. Note that
1660 we use the same field when chaining SSA_NAME nodes together on
1661 the SSA_NAME freelist. */
1662 #define SSA_NAME_DEF_STMT(NODE) SSA_NAME_CHECK (NODE)->common.chain
1664 /* Returns the SSA version number of this SSA name. Note that in
1665 tree SSA, version numbers are not per variable and may be recycled. */
1666 #define SSA_NAME_VERSION(NODE) SSA_NAME_CHECK (NODE)->ssa_name.version
1668 /* Nonzero if this SSA name occurs in an abnormal PHI. SSA_NAMES are
1669 never output, so we can safely use the ASM_WRITTEN_FLAG for this
1671 #define SSA_NAME_OCCURS_IN_ABNORMAL_PHI(NODE) \
1672 SSA_NAME_CHECK (NODE)->common.asm_written_flag
1674 /* Nonzero if this SSA_NAME expression is currently on the free list of
1675 SSA_NAMES. Using NOTHROW_FLAG seems reasonably safe since throwing
1676 has no meaning for an SSA_NAME. */
1677 #define SSA_NAME_IN_FREE_LIST(NODE) \
1678 SSA_NAME_CHECK (NODE)->common.nothrow_flag
1680 /* Attributes for SSA_NAMEs for pointer-type variables. */
1681 #define SSA_NAME_PTR_INFO(N) \
1682 SSA_NAME_CHECK (N)->ssa_name.ptr_info
1684 /* Get the value of this SSA_NAME, if available. */
1685 #define SSA_NAME_VALUE(N) \
1686 SSA_NAME_CHECK (N)->ssa_name.value_handle
1688 #ifndef _TREE_FLOW_H
1689 struct ptr_info_def;
1694 /* Immediate use linking structure. This structure is used for maintaining
1695 a doubly linked list of uses of an SSA_NAME. */
1696 typedef struct ssa_use_operand_d GTY(())
1698 struct ssa_use_operand_d* GTY((skip(""))) prev;
1699 struct ssa_use_operand_d* GTY((skip(""))) next;
1700 tree GTY((skip(""))) stmt;
1701 tree *GTY((skip(""))) use;
1702 } ssa_use_operand_t;
1704 /* Return the immediate_use information for an SSA_NAME. */
1705 #define SSA_NAME_IMM_USE_NODE(NODE) SSA_NAME_CHECK (NODE)->ssa_name.imm_uses
1707 struct tree_ssa_name GTY(())
1709 struct tree_common common;
1711 /* _DECL wrapped by this SSA name. */
1714 /* SSA version number. */
1715 unsigned int version;
1717 /* Pointer attributes used for alias analysis. */
1718 struct ptr_info_def *ptr_info;
1720 /* Value for SSA name used by various passes.
1722 Right now only invariants are allowed to persist beyond a pass in
1723 this field; in the future we will allow VALUE_HANDLEs to persist
1727 /* Immediate uses list for this SSA_NAME. */
1728 struct ssa_use_operand_d imm_uses;
1731 /* In a PHI_NODE node. */
1733 /* These 2 macros should be considered off limits for use by developers. If
1734 you wish to access the use or def fields of a PHI_NODE in the SSA
1735 optimizers, use the accessor macros found in tree-ssa-operands.h.
1736 These two macros are to be used only by those accessor macros, and other
1737 select places where we *absolutely* must take the address of the tree. */
1739 #define PHI_RESULT_TREE(NODE) PHI_NODE_CHECK (NODE)->phi.result
1740 #define PHI_ARG_DEF_TREE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).def
1742 /* PHI_NODEs for each basic block are chained together in a single linked
1743 list. The head of the list is linked from the block annotation, and
1744 the link to the next PHI is in PHI_CHAIN. */
1745 #define PHI_CHAIN(NODE) TREE_CHAIN (PHI_NODE_CHECK (NODE))
1747 #define PHI_NUM_ARGS(NODE) PHI_NODE_CHECK (NODE)->phi.num_args
1748 #define PHI_ARG_CAPACITY(NODE) PHI_NODE_CHECK (NODE)->phi.capacity
1749 #define PHI_ARG_ELT(NODE, I) PHI_NODE_ELT_CHECK (NODE, I)
1750 #define PHI_ARG_EDGE(NODE, I) (EDGE_PRED (PHI_BB ((NODE)), (I)))
1751 #define PHI_BB(NODE) PHI_NODE_CHECK (NODE)->phi.bb
1752 #define PHI_ARG_IMM_USE_NODE(NODE, I) PHI_NODE_ELT_CHECK (NODE, I).imm_use
1754 struct phi_arg_d GTY(())
1756 /* imm_use MUST be the first element in struct because we do some
1757 pointer arithmetic with it. See phi_arg_index_from_use. */
1758 struct ssa_use_operand_d imm_use;
1762 struct tree_phi_node GTY(())
1764 struct tree_common common;
1769 /* Basic block to that the phi node belongs. */
1770 struct basic_block_def *bb;
1772 /* Arguments of the PHI node. These are maintained in the same
1773 order as predecessor edge vector BB->PREDS. */
1774 struct phi_arg_d GTY ((length ("((tree)&%h)->phi.num_args"))) a[1];
1777 #define OMP_CLAUSE_CODE(NODE) \
1778 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1780 #define OMP_CLAUSE_SET_CODE(NODE, CODE) \
1781 ((OMP_CLAUSE_CHECK (NODE))->omp_clause.code = (CODE))
1783 #define OMP_CLAUSE_CODE(NODE) \
1784 (OMP_CLAUSE_CHECK (NODE))->omp_clause.code
1786 #define OMP_CLAUSE_OPERAND(NODE, I) \
1787 OMP_CLAUSE_ELT_CHECK (NODE, I)
1789 struct tree_omp_clause GTY(())
1791 struct tree_common common;
1792 enum omp_clause_code code;
1793 union omp_clause_subcode {
1794 enum omp_clause_default_kind default_kind;
1795 enum omp_clause_schedule_kind schedule_kind;
1796 enum tree_code reduction_code;
1797 } GTY ((skip)) subcode;
1798 tree GTY ((length ("omp_clause_num_ops[OMP_CLAUSE_CODE ((tree)&%h)]"))) ops[1];
1802 struct varray_head_tag;
1804 /* In a BLOCK node. */
1805 #define BLOCK_VARS(NODE) (BLOCK_CHECK (NODE)->block.vars)
1806 #define BLOCK_SUBBLOCKS(NODE) (BLOCK_CHECK (NODE)->block.subblocks)
1807 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
1808 /* Note: when changing this, make sure to find the places
1809 that use chainon or nreverse. */
1810 #define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
1811 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
1812 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)
1814 /* Nonzero means that this block is prepared to handle exceptions
1815 listed in the BLOCK_VARS slot. */
1816 #define BLOCK_HANDLER_BLOCK(NODE) \
1817 (BLOCK_CHECK (NODE)->block.handler_block_flag)
1819 /* An index number for this block. These values are not guaranteed to
1820 be unique across functions -- whether or not they are depends on
1821 the debugging output format in use. */
1822 #define BLOCK_NUMBER(NODE) (BLOCK_CHECK (NODE)->block.block_num)
1824 /* If block reordering splits a lexical block into discontiguous
1825 address ranges, we'll make a copy of the original block.
1827 Note that this is logically distinct from BLOCK_ABSTRACT_ORIGIN.
1828 In that case, we have one source block that has been replicated
1829 (through inlining or unrolling) into many logical blocks, and that
1830 these logical blocks have different physical variables in them.
1832 In this case, we have one logical block split into several
1833 non-contiguous address ranges. Most debug formats can't actually
1834 represent this idea directly, so we fake it by creating multiple
1835 logical blocks with the same variables in them. However, for those
1836 that do support non-contiguous regions, these allow the original
1837 logical block to be reconstructed, along with the set of address
1840 One of the logical block fragments is arbitrarily chosen to be
1841 the ORIGIN. The other fragments will point to the origin via
1842 BLOCK_FRAGMENT_ORIGIN; the origin itself will have this pointer
1843 be null. The list of fragments will be chained through
1844 BLOCK_FRAGMENT_CHAIN from the origin. */
1846 #define BLOCK_FRAGMENT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_origin)
1847 #define BLOCK_FRAGMENT_CHAIN(NODE) (BLOCK_CHECK (NODE)->block.fragment_chain)
1849 /* For an inlined function, this gives the location where it was called
1850 from. This is only set in the top level block, which corresponds to the
1851 inlined function scope. This is used in the debug output routines. */
1853 #define BLOCK_SOURCE_LOCATION(NODE) (BLOCK_CHECK (NODE)->block.locus)
1855 struct tree_block GTY(())
1857 struct tree_common common;
1859 unsigned handler_block_flag : 1;
1860 unsigned abstract_flag : 1;
1861 unsigned block_num : 30;
1866 tree abstract_origin;
1867 tree fragment_origin;
1868 tree fragment_chain;
1872 /* Define fields and accessors for nodes representing data types. */
1874 /* See tree.def for documentation of the use of these fields.
1875 Look at the documentation of the various ..._TYPE tree codes.
1877 Note that the type.values, type.minval, and type.maxval fields are
1878 overloaded and used for different macros in different kinds of types.
1879 Each macro must check to ensure the tree node is of the proper kind of
1880 type. Note also that some of the front-ends also overload these fields,
1881 so they must be checked as well. */
1883 #define TYPE_UID(NODE) (TYPE_CHECK (NODE)->type.uid)
1884 #define TYPE_SIZE(NODE) (TYPE_CHECK (NODE)->type.size)
1885 #define TYPE_SIZE_UNIT(NODE) (TYPE_CHECK (NODE)->type.size_unit)
1886 #define TYPE_MODE(NODE) (TYPE_CHECK (NODE)->type.mode)
1887 #define TYPE_VALUES(NODE) (ENUMERAL_TYPE_CHECK (NODE)->type.values)
1888 #define TYPE_DOMAIN(NODE) (ARRAY_TYPE_CHECK (NODE)->type.values)
1889 #define TYPE_FIELDS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.values)
1890 #define TYPE_CACHED_VALUES(NODE) (TYPE_CHECK(NODE)->type.values)
1891 #define TYPE_ORIG_SIZE_TYPE(NODE) \
1892 (INTEGER_TYPE_CHECK (NODE)->type.values \
1893 ? TREE_TYPE ((NODE)->type.values) : NULL_TREE)
1894 #define TYPE_METHODS(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.maxval)
1895 #define TYPE_VFIELD(NODE) (RECORD_OR_UNION_CHECK (NODE)->type.minval)
1896 #define TYPE_ARG_TYPES(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.values)
1897 #define TYPE_METHOD_BASETYPE(NODE) (FUNC_OR_METHOD_CHECK (NODE)->type.maxval)
1898 #define TYPE_OFFSET_BASETYPE(NODE) (OFFSET_TYPE_CHECK (NODE)->type.maxval)
1899 #define TYPE_POINTER_TO(NODE) (TYPE_CHECK (NODE)->type.pointer_to)
1900 #define TYPE_REFERENCE_TO(NODE) (TYPE_CHECK (NODE)->type.reference_to)
1901 #define TYPE_NEXT_PTR_TO(NODE) (POINTER_TYPE_CHECK (NODE)->type.minval)
1902 #define TYPE_NEXT_REF_TO(NODE) (REFERENCE_TYPE_CHECK (NODE)->type.minval)
1903 #define TYPE_MIN_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.minval)
1904 #define TYPE_MAX_VALUE(NODE) (NUMERICAL_TYPE_CHECK (NODE)->type.maxval)
1905 #define TYPE_PRECISION(NODE) (TYPE_CHECK (NODE)->type.precision)
1906 #define TYPE_SYMTAB_ADDRESS(NODE) (TYPE_CHECK (NODE)->type.symtab.address)
1907 #define TYPE_SYMTAB_POINTER(NODE) (TYPE_CHECK (NODE)->type.symtab.pointer)
1908 #define TYPE_SYMTAB_DIE(NODE) (TYPE_CHECK (NODE)->type.symtab.die)
1909 #define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
1910 #define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
1911 #define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
1912 #define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
1913 #define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
1915 /* For a VECTOR_TYPE node, this describes a different type which is emitted
1916 in the debugging output. We use this to describe a vector as a
1917 structure containing an array. */
1918 #define TYPE_DEBUG_REPRESENTATION_TYPE(NODE) (VECTOR_TYPE_CHECK (NODE)->type.values)
1920 /* For record and union types, information about this type, as a base type
1922 #define TYPE_BINFO(NODE) (RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1924 /* For non record and union types, used in a language-dependent way. */
1925 #define TYPE_LANG_SLOT_1(NODE) (NOT_RECORD_OR_UNION_CHECK(NODE)->type.binfo)
1927 /* The (language-specific) typed-based alias set for this type.
1928 Objects whose TYPE_ALIAS_SETs are different cannot alias each
1929 other. If the TYPE_ALIAS_SET is -1, no alias set has yet been
1930 assigned to this type. If the TYPE_ALIAS_SET is 0, objects of this
1931 type can alias objects of any type. */
1932 #define TYPE_ALIAS_SET(NODE) (TYPE_CHECK (NODE)->type.alias_set)
1934 /* Nonzero iff the typed-based alias set for this type has been
1936 #define TYPE_ALIAS_SET_KNOWN_P(NODE) (TYPE_CHECK (NODE)->type.alias_set != -1)
1938 /* A TREE_LIST of IDENTIFIER nodes of the attributes that apply
1940 #define TYPE_ATTRIBUTES(NODE) (TYPE_CHECK (NODE)->type.attributes)
1942 /* The alignment necessary for objects of this type.
1943 The value is an int, measured in bits. */
1944 #define TYPE_ALIGN(NODE) (TYPE_CHECK (NODE)->type.align)
1946 /* 1 if the alignment for this type was requested by "aligned" attribute,
1947 0 if it is the default for this type. */
1948 #define TYPE_USER_ALIGN(NODE) (TYPE_CHECK (NODE)->type.user_align)
1950 /* The alignment for NODE, in bytes. */
1951 #define TYPE_ALIGN_UNIT(NODE) (TYPE_ALIGN (NODE) / BITS_PER_UNIT)
1953 /* If your language allows you to declare types, and you want debug info
1954 for them, then you need to generate corresponding TYPE_DECL nodes.
1955 These "stub" TYPE_DECL nodes have no name, and simply point at the
1956 type node. You then set the TYPE_STUB_DECL field of the type node
1957 to point back at the TYPE_DECL node. This allows the debug routines
1958 to know that the two nodes represent the same type, so that we only
1959 get one debug info record for them. */
1960 #define TYPE_STUB_DECL(NODE) TREE_CHAIN (NODE)
1962 /* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
1963 has BLKmode only because it lacks the alignment requirement for
1965 #define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
1967 /* In an INTEGER_TYPE, it means the type represents a size. We use
1968 this both for validity checking and to permit optimizations that
1969 are unsafe for other types. Note that the C `size_t' type should
1970 *not* have this flag set. The `size_t' type is simply a typedef
1971 for an ordinary integer type that happens to be the type of an
1972 expression returned by `sizeof'; `size_t' has no special
1973 properties. Expressions whose type have TYPE_IS_SIZETYPE set are
1974 always actual sizes. */
1975 #define TYPE_IS_SIZETYPE(NODE) \
1976 (INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1978 /* In a FUNCTION_TYPE, indicates that the function returns with the stack
1979 pointer depressed. */
1980 #define TYPE_RETURNS_STACK_DEPRESSED(NODE) \
1981 (FUNCTION_TYPE_CHECK (NODE)->type.no_force_blk_flag)
1983 /* Nonzero in a type considered volatile as a whole. */
1984 #define TYPE_VOLATILE(NODE) (TYPE_CHECK (NODE)->common.volatile_flag)
1986 /* Means this type is const-qualified. */
1987 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->common.readonly_flag)
1989 /* If nonzero, this type is `restrict'-qualified, in the C sense of
1991 #define TYPE_RESTRICT(NODE) (TYPE_CHECK (NODE)->type.restrict_flag)
1993 /* There is a TYPE_QUAL value for each type qualifier. They can be
1994 combined by bitwise-or to form the complete set of qualifiers for a
1997 #define TYPE_UNQUALIFIED 0x0
1998 #define TYPE_QUAL_CONST 0x1
1999 #define TYPE_QUAL_VOLATILE 0x2
2000 #define TYPE_QUAL_RESTRICT 0x4
2002 /* The set of type qualifiers for this type. */
2003 #define TYPE_QUALS(NODE) \
2004 ((TYPE_READONLY (NODE) * TYPE_QUAL_CONST) \
2005 | (TYPE_VOLATILE (NODE) * TYPE_QUAL_VOLATILE) \
2006 | (TYPE_RESTRICT (NODE) * TYPE_QUAL_RESTRICT))
2008 /* These flags are available for each language front end to use internally. */
2009 #define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type.lang_flag_0)
2010 #define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type.lang_flag_1)
2011 #define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type.lang_flag_2)
2012 #define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type.lang_flag_3)
2013 #define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type.lang_flag_4)
2014 #define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type.lang_flag_5)
2015 #define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type.lang_flag_6)
2017 /* Used to keep track of visited nodes in tree traversals. This is set to
2018 0 by copy_node and make_node. */
2019 #define TREE_VISITED(NODE) ((NODE)->common.visited)
2021 /* If set in an ARRAY_TYPE, indicates a string type (for languages
2022 that distinguish string from array of char).
2023 If set in a INTEGER_TYPE, indicates a character type. */
2024 #define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
2026 /* If non-NULL, this is an upper bound of the size (in bytes) of an
2027 object of the given ARRAY_TYPE. This allows temporaries to be
2029 #define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) \
2030 (ARRAY_TYPE_CHECK (ARRAY_TYPE)->type.maxval)
2032 /* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
2033 #define TYPE_VECTOR_SUBPARTS(VECTOR_TYPE) \
2034 (((unsigned HOST_WIDE_INT) 1) \
2035 << VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision)
2037 /* Set precision to n when we have 2^n sub-parts of the vector. */
2038 #define SET_TYPE_VECTOR_SUBPARTS(VECTOR_TYPE, X) \
2039 (VECTOR_TYPE_CHECK (VECTOR_TYPE)->type.precision = exact_log2 (X))
2041 /* Indicates that objects of this type must be initialized by calling a
2042 function when they are created. */
2043 #define TYPE_NEEDS_CONSTRUCTING(NODE) \
2044 (TYPE_CHECK (NODE)->type.needs_constructing_flag)
2046 /* Indicates that objects of this type (a UNION_TYPE), should be passed
2047 the same way that the first union alternative would be passed. */
2048 #define TYPE_TRANSPARENT_UNION(NODE) \
2049 (UNION_TYPE_CHECK (NODE)->type.transparent_union_flag)
2051 /* For an ARRAY_TYPE, indicates that it is not permitted to
2052 take the address of a component of the type. */
2053 #define TYPE_NONALIASED_COMPONENT(NODE) \
2054 (ARRAY_TYPE_CHECK (NODE)->type.transparent_union_flag)
2056 /* Indicated that objects of this type should be laid out in as
2057 compact a way as possible. */
2058 #define TYPE_PACKED(NODE) (TYPE_CHECK (NODE)->type.packed_flag)
2060 /* Used by type_contains_placeholder_p to avoid recomputation.
2061 Values are: 0 (unknown), 1 (false), 2 (true). Never access
2062 this field directly. */
2063 #define TYPE_CONTAINS_PLACEHOLDER_INTERNAL(NODE) \
2064 (TYPE_CHECK (NODE)->type.contains_placeholder_bits)
2068 struct tree_type GTY(())
2070 struct tree_common common;
2077 unsigned int precision : 9;
2078 ENUM_BITFIELD(machine_mode) mode : 7;
2080 unsigned string_flag : 1;
2081 unsigned no_force_blk_flag : 1;
2082 unsigned needs_constructing_flag : 1;
2083 unsigned transparent_union_flag : 1;
2084 unsigned packed_flag : 1;
2085 unsigned restrict_flag : 1;
2086 unsigned contains_placeholder_bits : 2;
2088 unsigned lang_flag_0 : 1;
2089 unsigned lang_flag_1 : 1;
2090 unsigned lang_flag_2 : 1;
2091 unsigned lang_flag_3 : 1;
2092 unsigned lang_flag_4 : 1;
2093 unsigned lang_flag_5 : 1;
2094 unsigned lang_flag_6 : 1;
2095 unsigned user_align : 1;
2100 union tree_type_symtab {
2101 int GTY ((tag ("0"))) address;
2102 char * GTY ((tag ("1"))) pointer;
2103 struct die_struct * GTY ((tag ("2"))) die;
2104 } GTY ((desc ("debug_hooks == &sdb_debug_hooks ? 1 : debug_hooks == &dwarf2_debug_hooks ? 2 : 0"),
2105 descbits ("2"))) symtab;
2113 HOST_WIDE_INT alias_set;
2114 /* Points to a structure whose details depend on the language in use. */
2115 struct lang_type *lang_specific;
2118 /* Define accessor macros for information about type inheritance
2121 A "basetype" means a particular usage of a data type for inheritance
2122 in another type. Each such basetype usage has its own "binfo"
2123 object to describe it. The binfo object is a TREE_VEC node.
2125 Inheritance is represented by the binfo nodes allocated for a
2126 given type. For example, given types C and D, such that D is
2127 inherited by C, 3 binfo nodes will be allocated: one for describing
2128 the binfo properties of C, similarly one for D, and one for
2129 describing the binfo properties of D as a base type for C.
2130 Thus, given a pointer to class C, one can get a pointer to the binfo
2131 of D acting as a basetype for C by looking at C's binfo's basetypes. */
2133 /* BINFO specific flags. */
2135 /* Nonzero means that the derivation chain is via a `virtual' declaration. */
2136 #define BINFO_VIRTUAL_P(NODE) (TREE_BINFO_CHECK (NODE)->common.static_flag)
2138 /* Flags for language dependent use. */
2139 #define BINFO_MARKED(NODE) TREE_LANG_FLAG_0(TREE_BINFO_CHECK(NODE))
2140 #define BINFO_FLAG_1(NODE) TREE_LANG_FLAG_1(TREE_BINFO_CHECK(NODE))
2141 #define BINFO_FLAG_2(NODE) TREE_LANG_FLAG_2(TREE_BINFO_CHECK(NODE))
2142 #define BINFO_FLAG_3(NODE) TREE_LANG_FLAG_3(TREE_BINFO_CHECK(NODE))
2143 #define BINFO_FLAG_4(NODE) TREE_LANG_FLAG_4(TREE_BINFO_CHECK(NODE))
2144 #define BINFO_FLAG_5(NODE) TREE_LANG_FLAG_5(TREE_BINFO_CHECK(NODE))
2145 #define BINFO_FLAG_6(NODE) TREE_LANG_FLAG_6(TREE_BINFO_CHECK(NODE))
2147 /* The actual data type node being inherited in this basetype. */
2148 #define BINFO_TYPE(NODE) TREE_TYPE (TREE_BINFO_CHECK(NODE))
2150 /* The offset where this basetype appears in its containing type.
2151 BINFO_OFFSET slot holds the offset (in bytes)
2152 from the base of the complete object to the base of the part of the
2153 object that is allocated on behalf of this `type'.
2154 This is always 0 except when there is multiple inheritance. */
2156 #define BINFO_OFFSET(NODE) (TREE_BINFO_CHECK(NODE)->binfo.offset)
2157 #define BINFO_OFFSET_ZEROP(NODE) (integer_zerop (BINFO_OFFSET (NODE)))
2159 /* The virtual function table belonging to this basetype. Virtual
2160 function tables provide a mechanism for run-time method dispatching.
2161 The entries of a virtual function table are language-dependent. */
2163 #define BINFO_VTABLE(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtable)
2165 /* The virtual functions in the virtual function table. This is
2166 a TREE_LIST that is used as an initial approximation for building
2167 a virtual function table for this basetype. */
2168 #define BINFO_VIRTUALS(NODE) (TREE_BINFO_CHECK(NODE)->binfo.virtuals)
2170 /* A vector of binfos for the direct basetypes inherited by this
2173 If this basetype describes type D as inherited in C, and if the
2174 basetypes of D are E and F, then this vector contains binfos for
2175 inheritance of E and F by C. */
2176 #define BINFO_BASE_BINFOS(NODE) (&TREE_BINFO_CHECK(NODE)->binfo.base_binfos)
2178 /* The number of basetypes for NODE. */
2179 #define BINFO_N_BASE_BINFOS(NODE) (VEC_length (tree, BINFO_BASE_BINFOS (NODE)))
2181 /* Accessor macro to get to the Nth base binfo of this binfo. */
2182 #define BINFO_BASE_BINFO(NODE,N) \
2183 (VEC_index (tree, BINFO_BASE_BINFOS (NODE), (N)))
2184 #define BINFO_BASE_ITERATE(NODE,N,B) \
2185 (VEC_iterate (tree, BINFO_BASE_BINFOS (NODE), (N), (B)))
2186 #define BINFO_BASE_APPEND(NODE,T) \
2187 (VEC_quick_push (tree, BINFO_BASE_BINFOS (NODE), (T)))
2189 /* For a BINFO record describing a virtual base class, i.e., one where
2190 TREE_VIA_VIRTUAL is set, this field assists in locating the virtual
2191 base. The actual contents are language-dependent. In the C++
2192 front-end this field is an INTEGER_CST giving an offset into the
2193 vtable where the offset to the virtual base can be found. */
2194 #define BINFO_VPTR_FIELD(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vptr_field)
2196 /* Indicates the accesses this binfo has to its bases. The values are
2197 access_public_node, access_protected_node or access_private_node.
2198 If this array is not present, public access is implied. */
2199 #define BINFO_BASE_ACCESSES(NODE) (TREE_BINFO_CHECK(NODE)->binfo.base_accesses)
2201 #define BINFO_BASE_ACCESS(NODE,N) \
2202 VEC_index (tree, BINFO_BASE_ACCESSES (NODE), (N))
2203 #define BINFO_BASE_ACCESS_APPEND(NODE,T) \
2204 VEC_quick_push (tree, BINFO_BASE_ACCESSES (NODE), (T))
2206 /* The index in the VTT where this subobject's sub-VTT can be found.
2207 NULL_TREE if there is no sub-VTT. */
2208 #define BINFO_SUBVTT_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_subvtt)
2210 /* The index in the VTT where the vptr for this subobject can be
2211 found. NULL_TREE if there is no secondary vptr in the VTT. */
2212 #define BINFO_VPTR_INDEX(NODE) (TREE_BINFO_CHECK(NODE)->binfo.vtt_vptr)
2214 /* The BINFO_INHERITANCE_CHAIN points at the binfo for the base
2215 inheriting this base for non-virtual bases. For virtual bases it
2216 points either to the binfo for which this is a primary binfo, or to
2217 the binfo of the most derived type. */
2218 #define BINFO_INHERITANCE_CHAIN(NODE) \
2219 (TREE_BINFO_CHECK(NODE)->binfo.inheritance)
2221 struct tree_binfo GTY (())
2223 struct tree_common common;
2229 VEC(tree,gc) *base_accesses;
2235 VEC(tree,none) base_binfos;
2239 /* Define fields and accessors for nodes representing declared names. */
2241 /* Nonzero if DECL represents a variable for the SSA passes. */
2242 #define SSA_VAR_P(DECL) \
2243 (TREE_CODE (DECL) == VAR_DECL \
2244 || TREE_CODE (DECL) == PARM_DECL \
2245 || TREE_CODE (DECL) == RESULT_DECL \
2247 || (TREE_CODE (DECL) == SSA_NAME \
2248 && (TREE_CODE (SSA_NAME_VAR (DECL)) == VAR_DECL \
2249 || TREE_CODE (SSA_NAME_VAR (DECL)) == PARM_DECL \
2250 || TREE_CODE (SSA_NAME_VAR (DECL)) == RESULT_DECL \
2251 || MTAG_P (SSA_NAME_VAR (DECL)))))
2256 /* Enumerate visibility settings. */
2257 #ifndef SYMBOL_VISIBILITY_DEFINED
2258 #define SYMBOL_VISIBILITY_DEFINED
2259 enum symbol_visibility
2262 VISIBILITY_INTERNAL,
2264 VISIBILITY_PROTECTED
2271 /* This is the name of the object as written by the user.
2272 It is an IDENTIFIER_NODE. */
2273 #define DECL_NAME(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.name)
2275 /* Every ..._DECL node gets a unique number. */
2276 #define DECL_UID(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.uid)
2278 /* These two fields describe where in the source code the declaration
2279 was. If the declaration appears in several places (as for a C
2280 function that is declared first and then defined later), this
2281 information should refer to the definition. */
2282 #define DECL_SOURCE_LOCATION(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.locus)
2283 #define DECL_SOURCE_FILE(NODE) LOCATION_FILE (DECL_SOURCE_LOCATION (NODE))
2284 #define DECL_SOURCE_LINE(NODE) LOCATION_LINE (DECL_SOURCE_LOCATION (NODE))
2285 #ifdef USE_MAPPED_LOCATION
2286 #define DECL_IS_BUILTIN(DECL) \
2287 (DECL_SOURCE_LOCATION (DECL) <= BUILTINS_LOCATION)
2289 #define DECL_IS_BUILTIN(DECL) (DECL_SOURCE_LINE(DECL) == 0)
2292 /* For FIELD_DECLs, this is the RECORD_TYPE, UNION_TYPE, or
2293 QUAL_UNION_TYPE node that the field is a member of. For VAR_DECL,
2294 PARM_DECL, FUNCTION_DECL, LABEL_DECL, and CONST_DECL nodes, this
2295 points to either the FUNCTION_DECL for the containing function,
2296 the RECORD_TYPE or UNION_TYPE for the containing type, or
2297 NULL_TREE or a TRANSLATION_UNIT_DECL if the given decl has "file
2299 #define DECL_CONTEXT(NODE) (DECL_MINIMAL_CHECK (NODE)->decl_minimal.context)
2300 #define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl_minimal.context)
2301 struct tree_decl_minimal GTY(())
2303 struct tree_common common;
2310 /* When computing aliasing information, we represent the memory pointed-to
2311 by pointers with artificial variables called "memory tags" (MT). There
2312 are two kinds of tags, namely symbol and name:
2314 Symbol tags (SMT) are used in flow-insensitive alias analysis, they
2315 represent all the pointed-to locations and variables pointed-to by
2316 the same pointer symbol. Usually, this set is computed using
2317 type-based analysis (i.e., alias set classes), but this may not
2320 Name tags (NMT) are used in flow-sensitive points-to alias
2321 analysis, they represent the variables and memory locations
2322 pointed-to by a specific SSA_NAME pointer.
2324 In general, given a pointer P with a symbol tag SMT, the alias set
2325 of SMT should be the union of all the alias sets of the NMTs of
2326 every SSA_NAME for P. */
2327 struct tree_memory_tag GTY(())
2329 struct tree_decl_minimal common;
2330 unsigned int is_global:1;
2331 unsigned int is_used_alone:1;
2332 unsigned int old_used_alone:1;
2335 #define MTAG_GLOBAL(NODE) (TREE_MEMORY_TAG_CHECK (NODE)->mtag.is_global)
2337 /* This flag is true if a SMT is used as the V_MAY_DEF or VUSE operand
2338 directly, because the access had all of the SMT's aliases pruned
2340 #define SMT_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.is_used_alone)
2342 /* This flag is used to temporarily store the old value of the used alone
2343 flag when updating so we know whether to mark the symbol for
2345 #define SMT_OLD_USED_ALONE(NODE) (SYMBOL_MEMORY_TAG_CHECK (NODE)->mtag.old_used_alone)
2347 struct tree_struct_field_tag GTY(())
2349 struct tree_memory_tag common;
2351 /* Parent variable. */
2354 /* Offset inside structure. */
2355 unsigned HOST_WIDE_INT offset;
2357 /* Size of the field. */
2358 unsigned HOST_WIDE_INT size;
2361 #define SFT_PARENT_VAR(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.parent_var)
2362 #define SFT_OFFSET(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.offset)
2363 #define SFT_SIZE(NODE) (STRUCT_FIELD_TAG_CHECK (NODE)->sft.size)
2365 /* For any sort of a ..._DECL node, this points to the original (abstract)
2366 decl node which this decl is an instance of, or else it is NULL indicating
2367 that this decl is not an instance of some other decl. For example,
2368 in a nested declaration of an inline function, this points back to the
2370 #define DECL_ABSTRACT_ORIGIN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_origin)
2372 /* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
2373 origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
2374 #define DECL_ORIGIN(NODE) \
2375 (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
2377 /* Nonzero for any sort of ..._DECL node means this decl node represents an
2378 inline instance of some original (abstract) decl from an inline function;
2379 suppress any warnings about shadowing some other variable. FUNCTION_DECL
2380 nodes can also have their abstract origin set to themselves. */
2381 #define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
2382 && DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
2384 /* In a DECL this is the field where attributes are stored. */
2385 #define DECL_ATTRIBUTES(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.attributes)
2387 /* For a FUNCTION_DECL, holds the tree of BINDINGs.
2388 For a TRANSLATION_UNIT_DECL, holds the namespace's BLOCK.
2389 For a VAR_DECL, holds the initial value.
2390 For a PARM_DECL, not used--default
2391 values for parameters are encoded in the type of the function,
2392 not in the PARM_DECL slot.
2393 For a FIELD_DECL, this is used for enumeration values and the C
2394 frontend uses it for temporarily storing bitwidth of bitfields.
2396 ??? Need to figure out some way to check this isn't a PARM_DECL. */
2397 #define DECL_INITIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.initial)
2399 /* Holds the size of the datum, in bits, as a tree expression.
2400 Need not be constant. */
2401 #define DECL_SIZE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size)
2402 /* Likewise for the size in bytes. */
2403 #define DECL_SIZE_UNIT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.size_unit)
2404 /* Holds the alignment required for the datum, in bits. */
2405 #define DECL_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.u1.a.align)
2406 /* The alignment of NODE, in bytes. */
2407 #define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
2408 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2409 DECL_FIELD_OFFSET which are known to be always zero.
2410 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2412 #define DECL_USER_ALIGN(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.user_align)
2413 /* Holds the machine mode corresponding to the declaration of a variable or
2414 field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a
2416 #define DECL_MODE(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.mode)
2418 /* For FUNCTION_DECL, if it is built-in, this identifies which built-in
2419 operation it is. Note, however, that this field is overloaded, with
2420 DECL_BUILT_IN_CLASS as the discriminant, so the latter must always be
2421 checked before any access to the former. */
2422 #define DECL_FUNCTION_CODE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_common.u1.f)
2423 #define DECL_DEBUG_EXPR_IS_FROM(NODE) \
2424 (DECL_COMMON_CHECK (NODE)->decl_common.debug_expr_is_from)
2426 /* Nonzero for a given ..._DECL node means that the name of this node should
2427 be ignored for symbolic debug purposes. */
2428 #define DECL_IGNORED_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.ignored_flag)
2430 /* Nonzero for a given ..._DECL node means that this node represents an
2431 "abstract instance" of the given declaration (e.g. in the original
2432 declaration of an inline function). When generating symbolic debugging
2433 information, we mustn't try to generate any address information for nodes
2434 marked as "abstract instances" because we don't actually generate
2435 any code or allocate any data space for such instances. */
2436 #define DECL_ABSTRACT(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.abstract_flag)
2438 /* Language-specific decl information. */
2439 #define DECL_LANG_SPECIFIC(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_specific)
2441 /* In a VAR_DECL or FUNCTION_DECL, nonzero means external reference:
2442 do not allocate storage, and refer to a definition elsewhere. Note that
2443 this does not necessarily imply the entity represented by NODE
2444 has no program source-level definition in this translation unit. For
2445 example, for a FUNCTION_DECL, DECL_SAVED_TREE may be non-NULL and
2446 DECL_EXTERNAL may be true simultaneously; that can be the case for
2447 a C99 "extern inline" function. */
2448 #define DECL_EXTERNAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.decl_flag_2)
2450 /* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
2452 #define DEFAULT_INIT_PRIORITY 65535
2453 #define MAX_INIT_PRIORITY 65535
2454 #define MAX_RESERVED_INIT_PRIORITY 100
2457 /* Nonzero in a ..._DECL means this variable is ref'd from a nested function.
2458 For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes.
2460 For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted.
2462 Also set in some languages for variables, etc., outside the normal
2463 lexical scope, such as class instance variables. */
2464 #define DECL_NONLOCAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.nonlocal_flag)
2466 /* Used in VAR_DECLs to indicate that the variable is a vtable.
2467 Used in FIELD_DECLs for vtable pointers.
2468 Used in FUNCTION_DECLs to indicate that the function is virtual. */
2469 #define DECL_VIRTUAL_P(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.virtual_flag)
2471 /* Used to indicate that this DECL represents a compiler-generated entity. */
2472 #define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)
2474 /* Additional flags for language-specific uses. */
2475 #define DECL_LANG_FLAG_0(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_0)
2476 #define DECL_LANG_FLAG_1(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_1)
2477 #define DECL_LANG_FLAG_2(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_2)
2478 #define DECL_LANG_FLAG_3(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_3)
2479 #define DECL_LANG_FLAG_4(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_4)
2480 #define DECL_LANG_FLAG_5(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_5)
2481 #define DECL_LANG_FLAG_6(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_6)
2482 #define DECL_LANG_FLAG_7(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.lang_flag_7)
2484 /* Used to indicate an alias set for the memory pointed to by this
2485 particular FIELD_DECL, PARM_DECL, or VAR_DECL, which must have
2486 pointer (or reference) type. */
2487 #define DECL_POINTER_ALIAS_SET(NODE) \
2488 (DECL_COMMON_CHECK (NODE)->decl_common.pointer_alias_set)
2490 /* Nonzero if an alias set has been assigned to this declaration. */
2491 #define DECL_POINTER_ALIAS_SET_KNOWN_P(NODE) \
2492 (DECL_POINTER_ALIAS_SET (NODE) != - 1)
2494 /* Nonzero for a decl which is at file scope. */
2495 #define DECL_FILE_SCOPE_P(EXP) \
2496 (! DECL_CONTEXT (EXP) \
2497 || TREE_CODE (DECL_CONTEXT (EXP)) == TRANSLATION_UNIT_DECL)
2499 /* Nonzero for a decl that is decorated using attribute used.
2500 This indicates compiler tools that this decl needs to be preserved. */
2501 #define DECL_PRESERVE_P(DECL) \
2502 DECL_COMMON_CHECK (DECL)->decl_common.preserve_flag
2504 /* For function local variables of COMPLEX type, indicates that the
2505 variable is not aliased, and that all modifications to the variable
2506 have been adjusted so that they are killing assignments. Thus the
2507 variable may now be treated as a GIMPLE register, and use real
2508 instead of virtual ops in SSA form. */
2509 #define DECL_COMPLEX_GIMPLE_REG_P(DECL) \
2510 DECL_COMMON_CHECK (DECL)->decl_common.gimple_reg_flag
2512 /* This is true if DECL is call clobbered in the current function.
2513 The result of this flag should always be the same as
2514 bitmap_bit_p (call_clobbered_vars, DECL_UID (decl)). */
2515 #define DECL_CALL_CLOBBERED(DECL) \
2516 DECL_COMMON_CHECK (DECL)->decl_common.call_clobbered_flag
2518 struct tree_decl_common GTY(())
2520 struct tree_decl_minimal common;
2523 ENUM_BITFIELD(machine_mode) mode : 8;
2525 unsigned nonlocal_flag : 1;
2526 unsigned virtual_flag : 1;
2527 unsigned ignored_flag : 1;
2528 unsigned abstract_flag : 1;
2529 unsigned artificial_flag : 1;
2530 unsigned user_align : 1;
2531 unsigned preserve_flag: 1;
2532 unsigned debug_expr_is_from : 1;
2534 unsigned lang_flag_0 : 1;
2535 unsigned lang_flag_1 : 1;
2536 unsigned lang_flag_2 : 1;
2537 unsigned lang_flag_3 : 1;
2538 unsigned lang_flag_4 : 1;
2539 unsigned lang_flag_5 : 1;
2540 unsigned lang_flag_6 : 1;
2541 unsigned lang_flag_7 : 1;
2543 /* In LABEL_DECL, this is DECL_ERROR_ISSUED.
2544 In VAR_DECL and PARM_DECL, this is DECL_REGISTER. */
2545 unsigned decl_flag_0 : 1;
2546 /* In FIELD_DECL, this is DECL_PACKED. */
2547 unsigned decl_flag_1 : 1;
2548 /* In FIELD_DECL, this is DECL_BIT_FIELD
2549 In VAR_DECL and FUNCTION_DECL, this is DECL_EXTERNAL.
2550 In TYPE_DECL, this is TYPE_DECL_SUPRESS_DEBUG. */
2551 unsigned decl_flag_2 : 1;
2552 /* In FIELD_DECL, this is DECL_NONADDRESSABLE_P
2553 In VAR_DECL and PARM_DECL, this is DECL_HAS_VALUE_EXPR. */
2554 unsigned decl_flag_3 : 1;
2555 /* Logically, these two would go in a theoretical base shared by var and
2557 unsigned gimple_reg_flag : 1;
2558 unsigned call_clobbered_flag : 1;
2560 union tree_decl_u1 {
2561 /* In a FUNCTION_DECL for which DECL_BUILT_IN holds, this is
2562 DECL_FUNCTION_CODE. */
2563 enum built_in_function f;
2564 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this
2565 is used by language-dependent code. */
2567 /* DECL_ALIGN and DECL_OFFSET_ALIGN. (These are not used for
2569 struct tree_decl_u1_a {
2570 unsigned int align : 24;
2571 unsigned int off_align : 8;
2578 tree abstract_origin;
2580 HOST_WIDE_INT pointer_alias_set;
2581 /* Points to a structure whose details depend on the language in use. */
2582 struct lang_decl *lang_specific;
2585 extern tree decl_value_expr_lookup (tree);
2586 extern void decl_value_expr_insert (tree, tree);
2588 /* In a VAR_DECL or PARM_DECL, the location at which the value may be found,
2589 if transformations have made this more complicated than evaluating the
2590 decl itself. This should only be used for debugging; once this field has
2591 been set, the decl itself may not legitimately appear in the function. */
2592 #define DECL_HAS_VALUE_EXPR_P(NODE) \
2593 (TREE_CHECK2 (NODE, VAR_DECL, PARM_DECL)->decl_common.decl_flag_3)
2594 #define DECL_VALUE_EXPR(NODE) \
2595 (decl_value_expr_lookup (DECL_WRTL_CHECK (NODE)))
2596 #define SET_DECL_VALUE_EXPR(NODE, VAL) \
2597 (decl_value_expr_insert (DECL_WRTL_CHECK (NODE), VAL))
2599 /* Holds the RTL expression for the value of a variable or function.
2600 This value can be evaluated lazily for functions, variables with
2601 static storage duration, and labels. */
2602 #define DECL_RTL(NODE) \
2603 (DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl \
2604 ? (NODE)->decl_with_rtl.rtl \
2605 : (make_decl_rtl (NODE), (NODE)->decl_with_rtl.rtl))
2607 /* Set the DECL_RTL for NODE to RTL. */
2608 #define SET_DECL_RTL(NODE, RTL) set_decl_rtl (NODE, RTL)
2610 /* Returns nonzero if NODE is a tree node that can contain RTL. */
2611 #define HAS_RTL_P(NODE) (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WRTL))
2613 /* Returns nonzero if the DECL_RTL for NODE has already been set. */
2614 #define DECL_RTL_SET_P(NODE) (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
2616 /* Copy the RTL from NODE1 to NODE2. If the RTL was not set for
2617 NODE1, it will not be set for NODE2; this is a lazy copy. */
2618 #define COPY_DECL_RTL(NODE1, NODE2) \
2619 (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
2621 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set. */
2622 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
2624 /* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. */
2625 #define DECL_REGISTER(NODE) (DECL_WRTL_CHECK (NODE)->decl_common.decl_flag_0)
2627 struct tree_decl_with_rtl GTY(())
2629 struct tree_decl_common common;
2633 /* In a FIELD_DECL, this is the field position, counting in bytes, of the
2634 byte containing the bit closest to the beginning of the structure. */
2635 #define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.offset)
2637 /* In a FIELD_DECL, this is the offset, in bits, of the first bit of the
2638 field from DECL_FIELD_OFFSET. */
2639 #define DECL_FIELD_BIT_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_offset)
2641 /* In a FIELD_DECL, this indicates whether the field was a bit-field and
2642 if so, the type that was originally specified for it.
2643 TREE_TYPE may have been modified (in finish_struct). */
2644 #define DECL_BIT_FIELD_TYPE(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.bit_field_type)
2646 /* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which
2647 if nonzero, indicates that the field occupies the type. */
2648 #define DECL_QUALIFIER(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.qualifier)
2650 /* For FIELD_DECLs, off_align holds the number of low-order bits of
2651 DECL_FIELD_OFFSET which are known to be always zero.
2652 DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
2654 #define DECL_OFFSET_ALIGN(NODE) \
2655 (((unsigned HOST_WIDE_INT)1) << FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align)
2657 /* Specify that DECL_ALIGN(NODE) is a multiple of X. */
2658 #define SET_DECL_OFFSET_ALIGN(NODE, X) \
2659 (FIELD_DECL_CHECK (NODE)->decl_common.u1.a.off_align = exact_log2 ((X) & -(X)))
2660 /* 1 if the alignment for this type was requested by "aligned" attribute,
2661 0 if it is the default for this type. */
2663 /* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in
2664 which this FIELD_DECL is defined. This information is needed when
2665 writing debugging information about vfield and vbase decls for C++. */
2666 #define DECL_FCONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->field_decl.fcontext)
2668 /* In a FIELD_DECL, indicates this field should be bit-packed. */
2669 #define DECL_PACKED(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_1)
2671 /* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed
2673 #define DECL_BIT_FIELD(NODE) (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_2)
2675 /* Used in a FIELD_DECL to indicate that we cannot form the address of
2677 #define DECL_NONADDRESSABLE_P(NODE) \
2678 (FIELD_DECL_CHECK (NODE)->decl_common.decl_flag_3)
2680 struct tree_field_decl GTY(())
2682 struct tree_decl_common common;
2685 tree bit_field_type;
2692 /* A numeric unique identifier for a LABEL_DECL. The UID allocation is
2693 dense, unique within any one function, and may be used to index arrays.
2694 If the value is -1, then no UID has been assigned. */
2695 #define LABEL_DECL_UID(NODE) \
2696 (LABEL_DECL_CHECK (NODE)->decl_common.pointer_alias_set)
2698 /* In LABEL_DECL nodes, nonzero means that an error message about
2699 jumping into such a binding contour has been printed for this label. */
2700 #define DECL_ERROR_ISSUED(NODE) (LABEL_DECL_CHECK (NODE)->decl_common.decl_flag_0)
2702 struct tree_label_decl GTY(())
2704 struct tree_decl_with_rtl common;
2705 /* Java's verifier has some need to store information about labels,
2706 and was using fields that no longer exist on labels.
2707 Once the verifier doesn't need these anymore, they should be removed. */
2711 unsigned int java_field_4;
2715 struct tree_result_decl GTY(())
2717 struct tree_decl_with_rtl common;
2720 struct tree_const_decl GTY(())
2722 struct tree_decl_with_rtl common;
2725 /* For a PARM_DECL, records the data type used to pass the argument,
2726 which may be different from the type seen in the program. */
2727 #define DECL_ARG_TYPE(NODE) (PARM_DECL_CHECK (NODE)->decl_common.initial)
2729 /* For PARM_DECL, holds an RTL for the stack slot or register
2730 where the data was actually passed. */
2731 #define DECL_INCOMING_RTL(NODE) (PARM_DECL_CHECK (NODE)->parm_decl.incoming_rtl)
2733 struct tree_parm_decl GTY(())
2735 struct tree_decl_with_rtl common;
2740 /* Nonzero in a decl means that the gimplifier has seen (or placed)
2741 this variable in a BIND_EXPR. */
2742 #define DECL_SEEN_IN_BIND_EXPR_P(NODE) \
2743 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.seen_in_bind_expr)
2745 /* Used to indicate that the linkage status of this DECL is not yet known,
2746 so it should not be output now. */
2747 #define DECL_DEFER_OUTPUT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.defer_output)
2749 /* Nonzero for a given ..._DECL node means that no warnings should be
2750 generated just because this node is unused. */
2751 #define DECL_IN_SYSTEM_HEADER(NODE) \
2752 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.in_system_header_flag)
2754 /* Used to indicate that this DECL has weak linkage. */
2755 #define DECL_WEAK(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.weak_flag)
2757 /* Internal to the gimplifier. Indicates that the value is a formal
2758 temporary controlled by the gimplifier. */
2759 #define DECL_GIMPLE_FORMAL_TEMP_P(DECL) \
2760 DECL_WITH_VIS_CHECK (DECL)->decl_with_vis.gimple_formal_temp
2762 /* Used to indicate that the DECL is a dllimport. */
2763 #define DECL_DLLIMPORT_P(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.dllimport_flag)
2765 /* DECL_BASED_ON_RESTRICT_P records whether a VAR_DECL is a temporary
2766 based on a variable with a restrict qualified type. If it is,
2767 DECL_RESTRICT_BASE returns the restrict qualified variable on which
2770 #define DECL_BASED_ON_RESTRICT_P(NODE) \
2771 (VAR_DECL_CHECK (NODE)->decl_with_vis.based_on_restrict_p)
2772 #define DECL_GET_RESTRICT_BASE(NODE) \
2773 (decl_restrict_base_lookup (VAR_DECL_CHECK (NODE)))
2774 #define SET_DECL_RESTRICT_BASE(NODE, VAL) \
2775 (decl_restrict_base_insert (VAR_DECL_CHECK (NODE), (VAL)))
2777 extern tree decl_restrict_base_lookup (tree);
2778 extern void decl_restrict_base_insert (tree, tree);
2780 /* Used in a DECL to indicate that, even if it TREE_PUBLIC, it need
2781 not be put out unless it is needed in this translation unit.
2782 Entities like this are shared across translation units (like weak
2783 entities), but are guaranteed to be generated by any translation
2784 unit that needs them, and therefore need not be put out anywhere
2785 where they are not needed. DECL_COMDAT is just a hint to the
2786 back-end; it is up to front-ends which set this flag to ensure
2787 that there will never be any harm, other than bloat, in putting out
2788 something which is DECL_COMDAT. */
2789 #define DECL_COMDAT(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.comdat_flag)
2791 /* The name of the object as the assembler will see it (but before any
2792 translations made by ASM_OUTPUT_LABELREF). Often this is the same
2793 as DECL_NAME. It is an IDENTIFIER_NODE. */
2794 #define DECL_ASSEMBLER_NAME(NODE) decl_assembler_name (NODE)
2796 /* Return true if NODE is a NODE that can contain a DECL_ASSEMBLER_NAME.
2797 This is true of all DECL nodes except FIELD_DECL. */
2798 #define HAS_DECL_ASSEMBLER_NAME_P(NODE) \
2799 (CODE_CONTAINS_STRUCT (TREE_CODE (NODE), TS_DECL_WITH_VIS))
2801 /* Returns nonzero if the DECL_ASSEMBLER_NAME for NODE has been set. If zero,
2802 the NODE might still have a DECL_ASSEMBLER_NAME -- it just hasn't been set
2804 #define DECL_ASSEMBLER_NAME_SET_P(NODE) \
2805 (HAS_DECL_ASSEMBLER_NAME_P (NODE) && DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name != NULL_TREE)
2807 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME. */
2808 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
2809 (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.assembler_name = (NAME))
2811 /* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2. Note that if DECL1's
2812 DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
2813 the DECL_ASSEMBLER_NAME of either DECL to be set. In other words, the
2814 semantics of using this macro, are different than saying:
2816 SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
2818 which will try to set the DECL_ASSEMBLER_NAME for DECL1. */
2820 #define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2) \
2821 (DECL_ASSEMBLER_NAME_SET_P (DECL1) \
2822 ? (void) SET_DECL_ASSEMBLER_NAME (DECL2, \
2823 DECL_ASSEMBLER_NAME (DECL1)) \
2826 /* Records the section name in a section attribute. Used to pass
2827 the name from decl_attributes to make_function_rtl and make_decl_rtl. */
2828 #define DECL_SECTION_NAME(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.section_name)
2830 /* Value of the decls's visibility attribute */
2831 #define DECL_VISIBILITY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility)
2833 /* Nonzero means that the decl had its visibility specified rather than
2835 #define DECL_VISIBILITY_SPECIFIED(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.visibility_specified)
2837 /* Used in TREE_PUBLIC decls to indicate that copies of this DECL in
2838 multiple translation units should be merged. */
2839 #define DECL_ONE_ONLY(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.one_only)
2841 struct tree_decl_with_vis GTY(())
2843 struct tree_decl_with_rtl common;
2844 tree assembler_name;
2847 /* Belong to VAR_DECL exclusively. */
2848 unsigned defer_output:1;
2849 unsigned hard_register:1;
2850 unsigned thread_local:1;
2851 unsigned common_flag:1;
2852 unsigned in_text_section : 1;
2853 unsigned gimple_formal_temp : 1;
2854 unsigned dllimport_flag : 1;
2855 unsigned based_on_restrict_p : 1;
2856 /* Used by C++. Might become a generic decl flag. */
2857 unsigned shadowed_for_var_p : 1;
2859 /* Don't belong to VAR_DECL exclusively. */
2860 unsigned in_system_header_flag : 1;
2861 unsigned weak_flag:1;
2862 unsigned seen_in_bind_expr : 1;
2863 unsigned comdat_flag : 1;
2864 ENUM_BITFIELD(symbol_visibility) visibility : 2;
2865 unsigned visibility_specified : 1;
2866 /* Belong to FUNCTION_DECL exclusively. */
2867 unsigned one_only : 1;
2868 unsigned init_priority_p:1;
2870 /* Belongs to VAR_DECL exclusively. */
2871 ENUM_BITFIELD(tls_model) tls_model : 3;
2872 /* 11 unused bits. */
2875 /* In a VAR_DECL that's static,
2876 nonzero if the space is in the text section. */
2877 #define DECL_IN_TEXT_SECTION(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.in_text_section)
2879 /* Nonzero for a given ..._DECL node means that this node should be
2880 put in .common, if possible. If a DECL_INITIAL is given, and it
2881 is not error_mark_node, then the decl cannot be put in .common. */
2882 #define DECL_COMMON(NODE) (DECL_WITH_VIS_CHECK (NODE)->decl_with_vis.common_flag)
2884 /* In a VAR_DECL, nonzero if the decl is a register variable with
2885 an explicit asm specification. */
2886 #define DECL_HARD_REGISTER(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.hard_register)
2888 extern tree decl_debug_expr_lookup (tree);
2889 extern void decl_debug_expr_insert (tree, tree);
2890 /* For VAR_DECL, this is set to either an expression that it was split
2891 from (if DECL_DEBUG_EXPR_IS_FROM is true), otherwise a tree_list of
2892 subexpressions that it was split into. */
2893 #define DECL_DEBUG_EXPR(NODE) \
2894 (decl_debug_expr_lookup (VAR_DECL_CHECK (NODE)))
2896 #define SET_DECL_DEBUG_EXPR(NODE, VAL) \
2897 (decl_debug_expr_insert (VAR_DECL_CHECK (NODE), VAL))
2900 extern unsigned short decl_init_priority_lookup (tree);
2901 extern void decl_init_priority_insert (tree, unsigned short);
2903 /* In a non-local VAR_DECL with static storage duration, this is the
2904 initialization priority. If this value is zero, the NODE will be
2905 initialized at the DEFAULT_INIT_PRIORITY. Only used by C++ FE*/
2907 #define DECL_HAS_INIT_PRIORITY_P(NODE) \
2908 (VAR_DECL_CHECK (NODE)->decl_with_vis.init_priority_p)
2909 #define DECL_INIT_PRIORITY(NODE) \
2910 (decl_init_priority_lookup (VAR_DECL_CHECK (NODE)))
2911 #define SET_DECL_INIT_PRIORITY(NODE, VAL) \
2912 (decl_init_priority_insert (VAR_DECL_CHECK (NODE), VAL))
2914 /* In a VAR_DECL, the model to use if the data should be allocated from
2915 thread-local storage. */
2916 #define DECL_TLS_MODEL(NODE) (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model)
2918 /* In a VAR_DECL, nonzero if the data should be allocated from
2919 thread-local storage. */
2920 #define DECL_THREAD_LOCAL_P(NODE) \
2921 (VAR_DECL_CHECK (NODE)->decl_with_vis.tls_model != TLS_MODEL_NONE)
2923 struct tree_var_decl GTY(())
2925 struct tree_decl_with_vis common;
2929 /* This field is used to reference anything in decl.result and is meant only
2930 for use by the garbage collector. */
2931 #define DECL_RESULT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.result)
2933 /* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways.
2934 Before the struct containing the FUNCTION_DECL is laid out,
2935 DECL_VINDEX may point to a FUNCTION_DECL in a base class which
2936 is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual
2937 function. When the class is laid out, this pointer is changed
2938 to an INTEGER_CST node which is suitable for use as an index
2939 into the virtual function table.
2940 C++ also uses this field in namespaces, hence the DECL_NON_COMMON_CHECK. */
2941 #define DECL_VINDEX(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.vindex)
2943 struct tree_decl_non_common GTY(())
2946 struct tree_decl_with_vis common;
2947 /* C++ uses this in namespaces. */
2949 /* C++ uses this in templates. */
2951 /* Almost all FE's use this. */
2953 /* C++ uses this in namespaces. */
2957 /* In FUNCTION_DECL, holds the decl for the return value. */
2958 #define DECL_RESULT(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.result)
2960 /* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
2961 #define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.uninlinable)
2963 /* In a FUNCTION_DECL, the saved representation of the body of the
2965 #define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.saved_tree)
2967 /* Nonzero in a FUNCTION_DECL means this function should be treated
2968 as if it were a malloc, meaning it returns a pointer that is
2970 #define DECL_IS_MALLOC(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.malloc_flag)
2972 /* Nonzero in a FUNCTION_DECL means this function may return more
2974 #define DECL_IS_RETURNS_TWICE(NODE) \
2975 (FUNCTION_DECL_CHECK (NODE)->function_decl.returns_twice_flag)
2977 /* Nonzero in a FUNCTION_DECL means this function should be treated
2978 as "pure" function (like const function, but may read global memory). */
2979 #define DECL_IS_PURE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.pure_flag)
2981 /* Nonzero in a FUNCTION_DECL means this function should be treated
2982 as "novops" function (function that does not read global memory,
2983 but may have arbitrary side effects). */
2984 #define DECL_IS_NOVOPS(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.novops_flag)
2986 /* Used in FUNCTION_DECLs to indicate that they should be run automatically
2987 at the beginning or end of execution. */
2988 #define DECL_STATIC_CONSTRUCTOR(NODE) \
2989 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_ctor_flag)
2991 #define DECL_STATIC_DESTRUCTOR(NODE) \
2992 (FUNCTION_DECL_CHECK (NODE)->function_decl.static_dtor_flag)
2994 /* Used in FUNCTION_DECLs to indicate that function entry and exit should
2995 be instrumented with calls to support routines. */
2996 #define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
2997 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_instrument_function_entry_exit)
2999 /* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
3000 disabled in this function. */
3001 #define DECL_NO_LIMIT_STACK(NODE) \
3002 (FUNCTION_DECL_CHECK (NODE)->function_decl.no_limit_stack)
3004 /* In a FUNCTION_DECL with a nonzero DECL_CONTEXT, indicates that a
3005 static chain is not needed. */
3006 #define DECL_NO_STATIC_CHAIN(NODE) \
3007 (FUNCTION_DECL_CHECK (NODE)->function_decl.regdecl_flag)
3009 /* Nonzero for a decl that cgraph has decided should be inlined into
3010 at least one call site. It is not meaningful to look at this
3011 directly; always use cgraph_function_possibly_inlined_p. */
3012 #define DECL_POSSIBLY_INLINED(DECL) \
3013 FUNCTION_DECL_CHECK (DECL)->function_decl.possibly_inlined
3015 /* Nonzero in a FUNCTION_DECL means this function can be substituted
3016 where it is called. */
3017 #define DECL_INLINE(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.inline_flag)
3019 /* Nonzero in a FUNCTION_DECL means that this function was declared inline,
3020 such as via the `inline' keyword in C/C++. This flag controls the linkage
3021 semantics of 'inline'; whether or not the function is inlined is
3022 controlled by DECL_INLINE. */
3023 #define DECL_DECLARED_INLINE_P(NODE) \
3024 (FUNCTION_DECL_CHECK (NODE)->function_decl.declared_inline_flag)
3026 /* For FUNCTION_DECL, this holds a pointer to a structure ("struct function")
3027 that describes the status of this function. */
3028 #define DECL_STRUCT_FUNCTION(NODE) (FUNCTION_DECL_CHECK (NODE)->function_decl.f)
3030 /* In a FUNCTION_DECL, nonzero means a built in function. */
3031 #define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
3033 /* For a builtin function, identify which part of the compiler defined it. */
3034 #define DECL_BUILT_IN_CLASS(NODE) \
3035 (FUNCTION_DECL_CHECK (NODE)->function_decl.built_in_class)
3037 /* In FUNCTION_DECL, a chain of ..._DECL nodes.
3038 VAR_DECL and PARM_DECL reserve the arguments slot for language-specific
3040 #define DECL_ARGUMENTS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl_non_common.arguments)
3041 #define DECL_ARGUMENT_FLD(NODE) (DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments)
3043 /* FUNCTION_DECL inherits from DECL_NON_COMMON because of the use of the
3044 arguments/result/saved_tree fields by front ends. It was either inherit
3045 FUNCTION_DECL from non_common, or inherit non_common from FUNCTION_DECL,
3046 which seemed a bit strange. */
3048 struct tree_function_decl GTY(())
3050 struct tree_decl_non_common common;
3052 unsigned static_ctor_flag : 1;
3053 unsigned static_dtor_flag : 1;
3054 unsigned uninlinable : 1;
3055 unsigned possibly_inlined : 1;
3056 unsigned novops_flag : 1;
3057 unsigned returns_twice_flag : 1;
3058 unsigned malloc_flag : 1;
3059 unsigned pure_flag : 1;
3061 unsigned declared_inline_flag : 1;
3062 unsigned regdecl_flag : 1;
3063 unsigned inline_flag : 1;
3064 unsigned no_instrument_function_entry_exit : 1;
3065 unsigned no_limit_stack : 1;
3066 ENUM_BITFIELD(built_in_class) built_in_class : 2;
3071 /* For a TYPE_DECL, holds the "original" type. (TREE_TYPE has the copy.) */
3072 #define DECL_ORIGINAL_TYPE(NODE) (TYPE_DECL_CHECK (NODE)->decl_non_common.result)
3074 /* In a TYPE_DECL nonzero means the detail info about this type is not dumped
3075 into stabs. Instead it will generate cross reference ('x') of names.
3076 This uses the same flag as DECL_EXTERNAL. */
3077 #define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
3078 (TYPE_DECL_CHECK (NODE)->decl_common.decl_flag_2)
3080 struct tree_type_decl GTY(())
3082 struct tree_decl_non_common common;
3086 /* A STATEMENT_LIST chains statements together in GENERIC and GIMPLE.
3087 To reduce overhead, the nodes containing the statements are not trees.
3088 This avoids the overhead of tree_common on all linked list elements.
3090 Use the interface in tree-iterator.h to access this node. */
3092 #define STATEMENT_LIST_HEAD(NODE) \
3093 (STATEMENT_LIST_CHECK (NODE)->stmt_list.head)
3094 #define STATEMENT_LIST_TAIL(NODE) \
3095 (STATEMENT_LIST_CHECK (NODE)->stmt_list.tail)
3097 struct tree_statement_list_node
3098 GTY ((chain_next ("%h.next"), chain_prev ("%h.prev")))
3100 struct tree_statement_list_node *prev;
3101 struct tree_statement_list_node *next;
3105 struct tree_statement_list
3108 struct tree_common common;
3109 struct tree_statement_list_node *head;
3110 struct tree_statement_list_node *tail;
3113 #define VALUE_HANDLE_ID(NODE) \
3114 (VALUE_HANDLE_CHECK (NODE)->value_handle.id)
3116 #define VALUE_HANDLE_EXPR_SET(NODE) \
3117 (VALUE_HANDLE_CHECK (NODE)->value_handle.expr_set)
3119 #define VALUE_HANDLE_VUSES(NODE) \
3120 (VALUE_HANDLE_CHECK (NODE)->value_handle.vuses)
3122 /* Defined and used in tree-ssa-pre.c. */
3125 struct tree_value_handle GTY(())
3127 struct tree_common common;
3129 /* The set of expressions represented by this handle. */
3130 struct value_set * GTY ((skip)) expr_set;
3132 /* Unique ID for this value handle. IDs are handed out in a
3133 conveniently dense form starting at 0, so that we can make
3134 bitmaps of value handles. */
3137 /* Set of virtual uses represented by this handle. */
3138 VEC (tree, gc) *vuses;
3141 /* Define the overall contents of a tree node.
3142 It may be any of the structures declared above
3143 for various types of node. */
3145 union tree_node GTY ((ptr_alias (union lang_tree_node),
3146 desc ("tree_node_structure (&%h)")))
3148 struct tree_common GTY ((tag ("TS_COMMON"))) common;
3149 struct tree_int_cst GTY ((tag ("TS_INT_CST"))) int_cst;
3150 struct tree_real_cst GTY ((tag ("TS_REAL_CST"))) real_cst;
3151 struct tree_vector GTY ((tag ("TS_VECTOR"))) vector;
3152 struct tree_string GTY ((tag ("TS_STRING"))) string;
3153 struct tree_complex GTY ((tag ("TS_COMPLEX"))) complex;
3154 struct tree_identifier GTY ((tag ("TS_IDENTIFIER"))) identifier;
3155 struct tree_decl_minimal GTY((tag ("TS_DECL_MINIMAL"))) decl_minimal;
3156 struct tree_decl_common GTY ((tag ("TS_DECL_COMMON"))) decl_common;
3157 struct tree_decl_with_rtl GTY ((tag ("TS_DECL_WRTL"))) decl_with_rtl;
3158 struct tree_decl_non_common GTY ((tag ("TS_DECL_NON_COMMON"))) decl_non_common;
3159 struct tree_parm_decl GTY ((tag ("TS_PARM_DECL"))) parm_decl;
3160 struct tree_decl_with_vis GTY ((tag ("TS_DECL_WITH_VIS"))) decl_with_vis;
3161 struct tree_var_decl GTY ((tag ("TS_VAR_DECL"))) var_decl;
3162 struct tree_field_decl GTY ((tag ("TS_FIELD_DECL"))) field_decl;
3163 struct tree_label_decl GTY ((tag ("TS_LABEL_DECL"))) label_decl;
3164 struct tree_result_decl GTY ((tag ("TS_RESULT_DECL"))) result_decl;
3165 struct tree_const_decl GTY ((tag ("TS_CONST_DECL"))) const_decl;
3166 struct tree_type_decl GTY ((tag ("TS_TYPE_DECL"))) type_decl;
3167 struct tree_function_decl GTY ((tag ("TS_FUNCTION_DECL"))) function_decl;
3168 struct tree_type GTY ((tag ("TS_TYPE"))) type;
3169 struct tree_list GTY ((tag ("TS_LIST"))) list;
3170 struct tree_vec GTY ((tag ("TS_VEC"))) vec;
3171 struct tree_exp GTY ((tag ("TS_EXP"))) exp;
3172 struct tree_ssa_name GTY ((tag ("TS_SSA_NAME"))) ssa_name;
3173 struct tree_phi_node GTY ((tag ("TS_PHI_NODE"))) phi;
3174 struct tree_block GTY ((tag ("TS_BLOCK"))) block;
3175 struct tree_binfo GTY ((tag ("TS_BINFO"))) binfo;
3176 struct tree_statement_list GTY ((tag ("TS_STATEMENT_LIST"))) stmt_list;
3177 struct tree_value_handle GTY ((tag ("TS_VALUE_HANDLE"))) value_handle;
3178 struct tree_constructor GTY ((tag ("TS_CONSTRUCTOR"))) constructor;
3179 struct tree_memory_tag GTY ((tag ("TS_MEMORY_TAG"))) mtag;
3180 struct tree_struct_field_tag GTY ((tag ("TS_STRUCT_FIELD_TAG"))) sft;
3181 struct tree_omp_clause GTY ((tag ("TS_OMP_CLAUSE"))) omp_clause;
3184 /* Standard named or nameless data types of the C compiler. */
3203 TI_INTEGER_MINUS_ONE,
3220 TI_COMPLEX_INTEGER_TYPE,
3221 TI_COMPLEX_FLOAT_TYPE,
3222 TI_COMPLEX_DOUBLE_TYPE,
3223 TI_COMPLEX_LONG_DOUBLE_TYPE,
3227 TI_LONG_DOUBLE_TYPE,
3231 TI_LONG_DOUBLE_PTR_TYPE,
3232 TI_INTEGER_PTR_TYPE,
3241 TI_VA_LIST_GPR_COUNTER_FIELD,
3242 TI_VA_LIST_FPR_COUNTER_FIELD,
3249 TI_DFLOAT32_PTR_TYPE,
3250 TI_DFLOAT64_PTR_TYPE,
3251 TI_DFLOAT128_PTR_TYPE,
3260 extern GTY(()) tree global_trees[TI_MAX];
3262 #define error_mark_node global_trees[TI_ERROR_MARK]
3264 #define intQI_type_node global_trees[TI_INTQI_TYPE]
3265 #define intHI_type_node global_trees[TI_INTHI_TYPE]
3266 #define intSI_type_node global_trees[TI_INTSI_TYPE]
3267 #define intDI_type_node global_trees[TI_INTDI_TYPE]
3268 #define intTI_type_node global_trees[TI_INTTI_TYPE]
3270 #define unsigned_intQI_type_node global_trees[TI_UINTQI_TYPE]
3271 #define unsigned_intHI_type_node global_trees[TI_UINTHI_TYPE]
3272 #define unsigned_intSI_type_node global_trees[TI_UINTSI_TYPE]
3273 #define unsigned_intDI_type_node global_trees[TI_UINTDI_TYPE]
3274 #define unsigned_intTI_type_node global_trees[TI_UINTTI_TYPE]
3276 #define integer_zero_node global_trees[TI_INTEGER_ZERO]
3277 #define integer_one_node global_trees[TI_INTEGER_ONE]
3278 #define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
3279 #define size_zero_node global_trees[TI_SIZE_ZERO]
3280 #define size_one_node global_trees[TI_SIZE_ONE]
3281 #define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
3282 #define bitsize_one_node global_trees[TI_BITSIZE_ONE]
3283 #define bitsize_unit_node global_trees[TI_BITSIZE_UNIT]
3285 /* Base access nodes. */
3286 #define access_public_node global_trees[TI_PUBLIC]
3287 #define access_protected_node global_trees[TI_PROTECTED]
3288 #define access_private_node global_trees[TI_PRIVATE]
3290 #define null_pointer_node global_trees[TI_NULL_POINTER]
3292 #define float_type_node global_trees[TI_FLOAT_TYPE]
3293 #define double_type_node global_trees[TI_DOUBLE_TYPE]
3294 #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE]
3296 #define float_ptr_type_node global_trees[TI_FLOAT_PTR_TYPE]
3297 #define double_ptr_type_node global_trees[TI_DOUBLE_PTR_TYPE]
3298 #define long_double_ptr_type_node global_trees[TI_LONG_DOUBLE_PTR_TYPE]
3299 #define integer_ptr_type_node global_trees[TI_INTEGER_PTR_TYPE]
3301 #define complex_integer_type_node global_trees[TI_COMPLEX_INTEGER_TYPE]
3302 #define complex_float_type_node global_trees[TI_COMPLEX_FLOAT_TYPE]
3303 #define complex_double_type_node global_trees[TI_COMPLEX_DOUBLE_TYPE]
3304 #define complex_long_double_type_node global_trees[TI_COMPLEX_LONG_DOUBLE_TYPE]
3306 #define void_type_node global_trees[TI_VOID_TYPE]
3307 /* The C type `void *'. */
3308 #define ptr_type_node global_trees[TI_PTR_TYPE]
3309 /* The C type `const void *'. */
3310 #define const_ptr_type_node global_trees[TI_CONST_PTR_TYPE]
3311 /* The C type `size_t'. */
3312 #define size_type_node global_trees[TI_SIZE_TYPE]
3313 #define pid_type_node global_trees[TI_PID_TYPE]
3314 #define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
3315 #define va_list_type_node global_trees[TI_VA_LIST_TYPE]
3316 #define va_list_gpr_counter_field global_trees[TI_VA_LIST_GPR_COUNTER_FIELD]
3317 #define va_list_fpr_counter_field global_trees[TI_VA_LIST_FPR_COUNTER_FIELD]
3318 /* The C type `FILE *'. */
3319 #define fileptr_type_node global_trees[TI_FILEPTR_TYPE]
3321 #define boolean_type_node global_trees[TI_BOOLEAN_TYPE]
3322 #define boolean_false_node global_trees[TI_BOOLEAN_FALSE]
3323 #define boolean_true_node global_trees[TI_BOOLEAN_TRUE]
3325 /* The decimal floating point types. */
3326 #define dfloat32_type_node global_trees[TI_DFLOAT32_TYPE]
3327 #define dfloat64_type_node global_trees[TI_DFLOAT64_TYPE]
3328 #define dfloat128_type_node global_trees[TI_DFLOAT128_TYPE]
3329 #define dfloat32_ptr_type_node global_trees[TI_DFLOAT32_PTR_TYPE]
3330 #define dfloat64_ptr_type_node global_trees[TI_DFLOAT64_PTR_TYPE]
3331 #define dfloat128_ptr_type_node global_trees[TI_DFLOAT128_PTR_TYPE]
3333 /* The node that should be placed at the end of a parameter list to
3334 indicate that the function does not take a variable number of
3335 arguments. The TREE_VALUE will be void_type_node and there will be
3336 no TREE_CHAIN. Language-independent code should not assume
3337 anything else about this node. */
3338 #define void_list_node global_trees[TI_VOID_LIST_NODE]
3340 #define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
3341 #define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
3343 /* An enumeration of the standard C integer types. These must be
3344 ordered so that shorter types appear before longer ones, and so
3345 that signed types appear before unsigned ones, for the correct
3346 functioning of interpret_integer() in c-lex.c. */
3347 enum integer_type_kind
3359 itk_unsigned_long_long,
3363 typedef enum integer_type_kind integer_type_kind;
3365 /* The standard C integer types. Use integer_type_kind to index into
3367 extern GTY(()) tree integer_types[itk_none];
3369 #define char_type_node integer_types[itk_char]
3370 #define signed_char_type_node integer_types[itk_signed_char]
3371 #define unsigned_char_type_node integer_types[itk_unsigned_char]
3372 #define short_integer_type_node integer_types[itk_short]
3373 #define short_unsigned_type_node integer_types[itk_unsigned_short]
3374 #define integer_type_node integer_types[itk_int]
3375 #define unsigned_type_node integer_types[itk_unsigned_int]
3376 #define long_integer_type_node integer_types[itk_long]
3377 #define long_unsigned_type_node integer_types[itk_unsigned_long]
3378 #define long_long_integer_type_node integer_types[itk_long_long]
3379 #define long_long_unsigned_type_node integer_types[itk_unsigned_long_long]
3381 /* Set to the default thread-local storage (tls) model to use. */
3383 extern enum tls_model flag_tls_default;
3386 /* A pointer-to-function member type looks like:
3393 If __pfn is NULL, it is a NULL pointer-to-member-function.
3395 (Because the vtable is always the first thing in the object, we
3396 don't need its offset.) If the function is virtual, then PFN is
3397 one plus twice the index into the vtable; otherwise, it is just a
3398 pointer to the function.
3400 Unfortunately, using the lowest bit of PFN doesn't work in
3401 architectures that don't impose alignment requirements on function
3402 addresses, or that use the lowest bit to tell one ISA from another,
3403 for example. For such architectures, we use the lowest bit of
3404 DELTA instead of the lowest bit of the PFN, and DELTA will be
3407 enum ptrmemfunc_vbit_where_t
3409 ptrmemfunc_vbit_in_pfn,
3410 ptrmemfunc_vbit_in_delta
3413 #define NULL_TREE (tree) NULL
3415 extern tree decl_assembler_name (tree);
3417 /* Compute the number of bytes occupied by 'node'. This routine only
3418 looks at TREE_CODE and, if the code is TREE_VEC, TREE_VEC_LENGTH. */
3420 extern size_t tree_size (tree);
3422 /* Compute the number of bytes occupied by a tree with code CODE. This
3423 function cannot be used for TREE_VEC or PHI_NODE codes, which are of
3425 extern size_t tree_code_size (enum tree_code);
3427 /* Lowest level primitive for allocating a node.
3428 The TREE_CODE is the only argument. Contents are initialized
3429 to zero except for a few of the common fields. */
3431 extern tree make_node_stat (enum tree_code MEM_STAT_DECL);
3432 #define make_node(t) make_node_stat (t MEM_STAT_INFO)
3434 /* Make a copy of a node, with all the same contents. */
3436 extern tree copy_node_stat (tree MEM_STAT_DECL);
3437 #define copy_node(t) copy_node_stat (t MEM_STAT_INFO)
3439 /* Make a copy of a chain of TREE_LIST nodes. */
3441 extern tree copy_list (tree);
3444 extern tree make_tree_binfo_stat (unsigned MEM_STAT_DECL);
3445 #define make_tree_binfo(t) make_tree_binfo_stat (t MEM_STAT_INFO)
3447 /* Make a TREE_VEC. */
3449 extern tree make_tree_vec_stat (int MEM_STAT_DECL);
3450 #define make_tree_vec(t) make_tree_vec_stat (t MEM_STAT_INFO)
3452 /* Tree nodes for SSA analysis. */
3454 extern void init_phinodes (void);
3455 extern void fini_phinodes (void);
3456 extern void release_phi_node (tree);
3457 #ifdef GATHER_STATISTICS
3458 extern void phinodes_print_statistics (void);
3461 extern void init_ssanames (void);
3462 extern void fini_ssanames (void);
3463 extern tree make_ssa_name (tree, tree);
3464 extern tree duplicate_ssa_name (tree, tree);
3465 extern void duplicate_ssa_name_ptr_info (tree, struct ptr_info_def *);
3466 extern void release_ssa_name (tree);
3467 extern void release_defs (tree);
3468 extern void replace_ssa_name_symbol (tree, tree);
3470 #ifdef GATHER_STATISTICS
3471 extern void ssanames_print_statistics (void);
3474 /* Return the (unique) IDENTIFIER_NODE node for a given name.
3475 The name is supplied as a char *. */
3477 extern tree get_identifier (const char *);
3479 #if GCC_VERSION >= 3000
3480 #define get_identifier(str) \
3481 (__builtin_constant_p (str) \
3482 ? get_identifier_with_length ((str), strlen (str)) \
3483 : get_identifier (str))
3487 /* Identical to get_identifier, except that the length is assumed
3490 extern tree get_identifier_with_length (const char *, size_t);
3492 /* If an identifier with the name TEXT (a null-terminated string) has
3493 previously been referred to, return that node; otherwise return
3496 extern tree maybe_get_identifier (const char *);
3498 /* Construct various types of nodes. */
3500 extern tree build_nt (enum tree_code, ...);
3502 extern tree build0_stat (enum tree_code, tree MEM_STAT_DECL);
3503 #define build0(c,t) build0_stat (c,t MEM_STAT_INFO)
3504 extern tree build1_stat (enum tree_code, tree, tree MEM_STAT_DECL);
3505 #define build1(c,t1,t2) build1_stat (c,t1,t2 MEM_STAT_INFO)
3506 extern tree build2_stat (enum tree_code, tree, tree, tree MEM_STAT_DECL);
3507 #define build2(c,t1,t2,t3) build2_stat (c,t1,t2,t3 MEM_STAT_INFO)
3508 extern tree build3_stat (enum tree_code, tree, tree, tree, tree MEM_STAT_DECL);
3509 #define build3(c,t1,t2,t3,t4) build3_stat (c,t1,t2,t3,t4 MEM_STAT_INFO)
3510 extern tree build4_stat (enum tree_code, tree, tree, tree, tree,
3511 tree MEM_STAT_DECL);
3512 #define build4(c,t1,t2,t3,t4,t5) build4_stat (c,t1,t2,t3,t4,t5 MEM_STAT_INFO)
3513 extern tree build5_stat (enum tree_code, tree, tree, tree, tree, tree,
3514 tree MEM_STAT_DECL);
3515 #define build5(c,t1,t2,t3,t4,t5,t6) build5_stat (c,t1,t2,t3,t4,t5,t6 MEM_STAT_INFO)
3516 extern tree build7_stat (enum tree_code, tree, tree, tree, tree, tree,
3517 tree, tree, tree MEM_STAT_DECL);
3518 #define build7(c,t1,t2,t3,t4,t5,t6,t7,t8) \
3519 build7_stat (c,t1,t2,t3,t4,t5,t6,t7,t8 MEM_STAT_INFO)
3521 extern tree build_int_cst (tree, HOST_WIDE_INT);
3522 extern tree build_int_cst_type (tree, HOST_WIDE_INT);
3523 extern tree build_int_cstu (tree, unsigned HOST_WIDE_INT);
3524 extern tree build_int_cst_wide (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT);
3525 extern tree build_vector (tree, tree);
3526 extern tree build_vector_from_ctor (tree, VEC(constructor_elt,gc) *);
3527 extern tree build_constructor (tree, VEC(constructor_elt,gc) *);
3528 extern tree build_constructor_single (tree, tree, tree);
3529 extern tree build_constructor_from_li